US3564632A - Adjustable surfboard fin holder - Google Patents

Adjustable surfboard fin holder Download PDF

Info

Publication number
US3564632A
US3564632A US768253A US3564632DA US3564632A US 3564632 A US3564632 A US 3564632A US 768253 A US768253 A US 768253A US 3564632D A US3564632D A US 3564632DA US 3564632 A US3564632 A US 3564632A
Authority
US
United States
Prior art keywords
fin
surfboard
holder
base member
adjustable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US768253A
Inventor
William L Bahne Jr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3564632A publication Critical patent/US3564632A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/60—Board appendages, e.g. fins, hydrofoils or centre boards
    • B63B32/64—Adjustable, e.g. by adding sections, by removing sections or by changing orientation or profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/60—Board appendages, e.g. fins, hydrofoils or centre boards
    • B63B32/66—Arrangements for fixation to the board, e.g. fin boxes or foil boxes

Definitions

  • a surfboard generally comprises a longitudinal board with a controlled fin positioned on the rear bottom surface.
  • the fin is employed to control the direction and movement of the surfboard, through manipulation of the surfboard and the attached fin by the surfers feet and his balance on the surfboard.
  • the surfboard in turning u: ually pivots around the fin.
  • the longitudinal positioning of the fin is thus important in the handling of the surboard. Since many factors are involved in effectively manuvering a surfboard, such as its size, the weight of the surfer, the position of the surfers feet on the board, the type of waves encountered, and the position of the fin, it has been found that the fin position on a given surfboard for one surfer will not be an optimum fin position on the same surf-board for a different surfer. Thus it is very advantageous to be able to move the fin position longitudinally so that surfboard control for a given surfer can be optimized, normally through trial anderror.
  • a rectangular shaped channel member is embedded in the underneath surface of a surfboard adjacent its aft end.
  • the channel member has an opening on one side that is substantially flush with the under surface of the surfboard.
  • a surfboard fin having a longitudinal base member, fits into the open channel and is secured therein by fastening means.
  • the fastening means are secured between grooves in the channel and the base member of the surfboard and are slidable in the grooves to afford an infinite adjustment in the longitudinal position of the surfboard fin relative to the surfboard, within the length of the channel member.
  • the base member has a wedge shape that coacts with similarly inclined opposing longitudinal sides of the channel member, and is drawn into a abutting poice sition by the fastening means that secures the base member in the channel and against movement therein, until the fastening means is released.
  • the fin member is longitudinally moved within the channel member to a given position and is securely fastened in this position.
  • Appropriate indicia marking in the bottom of the channel allows the position of the fin to be determined through alignment between the indicia markings and the front edge of the base member. The surfer is thus able to make educated adjustments of the position of the base member and thus correlate the exact position of the fin to the operational handling of the surfboard to establish optimum positioning through trial and error methods.
  • FIG. 1 is a top plan view of a surfboard with the adjustable surfboard fin holder positioned therein.
  • FIG. 2 is a top plan view of a holder for adjustably holding a surfboard fin.
  • FIG. 3 is a cross sectional view taken along lines 3-3 of FIG. 1.
  • FIG. 4 is a cross sectional view taken along lines 44 of FIG. 3.
  • FIG. 5 is a side view of a surfboard fin with a base support member.
  • FIG. 6 is a cross sectional view taken along lines 6-6 of FIG. 5.
  • a surfboard 10 having any desired configuration and length, has a fin member 12 mounted on a base member 19 that is held in a holder 15.
  • the holder is a separate structure that is fitted into a recessed slot in the underneath surface of the surfboard 10.
  • the holder 15 is secured in this position, with its upper surface flush with the underneath surface of the surfboard 10, in any known manner such as by plastic, resins or any other suitable known means.
  • the surfboard fin 12 see FIG. 5, has a relatively narrow cross section and may have any suitable fin shape.
  • the integral base member 19 has a rectangular shape with sides 40 and 42 that incline inwardly, see FIG. 6.
  • the preferable angle of inclination is approximately five degrees. This provides a wedge shape for securely holding the base member 19 in position in the holder 15, as will be described in more detail hereinafter.
  • the holder 15, see FIGS. 2, 3, and 4, comprises a rectangular channel member having an opening at one side.
  • the opposing longitudinal sides have downwardly inclined surfaces 21 that correspond with the angle of the wedge shaped sides 40 and 42 of the basemember 19.
  • the opposing longitudinal sides also have longitudinal grooves 38 on each side that are aligned and parallel to receive opposite ends of the plate members 26 and 28.
  • An inward shoulder 36 provides additional structure strength to the sides of the holder 15.
  • Raised portions 16 on the bottom 34 of the holder 15 are equally spaced to provide a measuring rule and have corresponding numbers that allow measured positioning of the fin 12.
  • Opposing slits 24 in the opposite side of the holder 15, have a width slightly greater than the width of the plates 26 and 28 and have a depth corresponding to the depth of the grooves .38.
  • the slots 24 allow movement of the plates vertically and out of the grooves 38.
  • Each plate of plates 26 and 28 has a threaded opening 30 and 32 of receiving the threaded ends of bolts 46 and 48 that extend through vertical openings 50 in the base 19 of the fin 12. When tightened, the bolts 46 and 48 coact with plates 26 and 28 to draw the base member 19 and its wedged shaped cross section into engagement with the opposing sides of the holder 15.
  • the holder 15 is fixed in the surfboard and the plates 26 and 28 are inserted in grooves 38 through slots 24.
  • the fin 12 is place in the opening of the holder and bolts 46 and 48 are threadably engaged with the plates 26 and 28.
  • the surfboard fin is then moved longitudinally in the opening of the holder 15 until the desired positioning of the fin 12 is established. This positioning may be determined by correlating the end 18 of the base member 19 with he markings 16 on the bottom 34 of the holder 15.
  • the bolts 46 and 48 are tightened drawing the respective members together forming a wedge fit that holds the fin base in the secured position. Because of the wedge fit, the base member 19 can be separated from the sides of the holder 15 in a quick and easy manner by merely loosening the bolts 46 and 48 and pulling outwardly on the fin 12.
  • the base member 19 and the integral fin 12 may be slidably positioned to an infinite number of locations between the ends of holder 15.
  • the surfer can adjust the position of the fin 12 relative to the surfboard 10 to any desired position, and yet can obtain a rigid interconnection of the fin 12 with the surfboard structure 10 that protects against sliding movement of the fin 12.
  • a surfboard fin assembly comprising:
  • a fin support having opposing longitudinally extending interior sidewalls and an elongated channel partially defined by the interior sidewalls
  • a retaining plate having a pair of marginal edges coupled in the notches
  • one of said tongue and said fin having an enlarged section arranged to engage the side blocks
  • An adjustable surfboard fin holder for providing infinite longitudinal positioning of the surfboard fin within given limits comprising:
  • a surfboard fin having a longitudinal base member
  • a rectangular channel member having opposing longitudinal sides for reeciving said base member of said fin for being secured to the under surface of a surfboard
  • each of said opposing sides having longitudinal grooves that are parallel
  • releasable fastener means interconnecting said channel member with said base member for providing secured, longitudinal-positioning with infinite adjustment of said fin along the length of said channel member and the surfboard,
  • said base member having a wedge shaped cross section
  • each of said plates having a threaded opening therethrough
  • said bolt means projecting through holes in said base member and coacting with said threaded openings for drawing said base member into said channel.
  • each of said sides having aligned slots with a width slightly greater than the Width of each said plates and a depth substantially equal to the depth of said grooves, whereby said plates can be removed from said grooves through said slots.
  • said base member having a fiat lower surface with a recessed space at each end for receiving one of said plates, whereby said fastener means is capable of drawing said lower surface to a point adjacent to or below said grooves.
  • the bottom surface of said channel having longitudinally spaced marks with indicia for coacting with one end of said base member and measuring the current longitudinal position of said fin relative to the surfboard.
  • An adjustable surfboard fin holder for providing infinite longitudinal positioning of the surfboard fin within given limits comprising:
  • a surfboad fin having a longitudinal base member
  • a rectangular channel member for receiving said base member of said fin for being secured to the under surface of a surfboard
  • An adjustable surfboard fin holder as claimed in claim 8 in which:
  • said channel member having opposing sides
  • said base member having a wedge shaped cross section for fitting between said opposing longitudinal sides
  • said fastener means having means for drawing said wedged shaped base member into abutting contact with said sides to frictionally hold said base member in said channel member in a given position along the length of said channel member.

Abstract

AN ADJUSTABLE SURFBOARD FIN HOLDER THAT PROVIDES INFINITE LONGITUDINAL POSITIONING OF THE SURFBOARD FIN, WITHIN GIVEN LIMITS, THAT ALLOWS THE SURFBOARD FIN TO BE LOCATED IN A SECURED POSITION THAT IS MARKED WITH INDICIA, TO FACILITATE OPTIMUM SURFBOARD HANDLING.

Description

Feb. 23 1971 w JR 3,564,632
ADJUSTABLE SURFBOARD FIN HOLDER Filed Oct. 17. 1968 INVENTOR. F I 6.4 WILLIAM L. BAHNE Jr.
ATTORNEY United States Patent 9 3,564,632 ADJUSTABLE SURFBOARD FIN HOLDER William L. Bahne, Jr., 3864 Strand Way, San Diego, Calif. 92109 Filed Oct. 17, 1968, Ser. No. 768,253 Int. Cl. A63c /06 U.S. Cl. 9-310 9 Claims ABSTRACT OF THE DISCLOSURE An adjustable surfboard fin holder that provides infinite longitudinal positioning of the surfboard fin, within given limits, that allows the surfboard fin to be located in a secured position that is marked with indicia, to facilitate optimum surfboard handling.
BACKGROUND OF THE INVENTION Surfing has become a major sport in many areas of the United States and foreign countries. Meets are now held on a National and International basis to judge the skill of individual surfers. Thus considerable skill has been developed by surfers in handling and controlling their surfboards.
A surfboard generally comprises a longitudinal board with a controlled fin positioned on the rear bottom surface. The fin is employed to control the direction and movement of the surfboard, through manipulation of the surfboard and the attached fin by the surfers feet and his balance on the surfboard. The surfboard in turning u: ually pivots around the fin. The longitudinal positioning of the fin is thus important in the handling of the surboard. Since many factors are involved in effectively manuvering a surfboard, such as its size, the weight of the surfer, the position of the surfers feet on the board, the type of waves encountered, and the position of the fin, it has been found that the fin position on a given surfboard for one surfer will not be an optimum fin position on the same surf-board for a different surfer. Thus it is very advantageous to be able to move the fin position longitudinally so that surfboard control for a given surfer can be optimized, normally through trial anderror.
It is therefore advantageous to be able to adjust the position of the fin longitudinally on the surfboard, while still having a rigid connection of the fin to the surfboard that can withstand the forces exerted on the fin during surfing. Further it is advantageous to be able to infinitely adjust the longitudinal position of the fin within its holder so as to optimize the fin position relative to the surfer to achieve maximum and optimum results. With skillful surfers, it has been found that a movement as small at A; of an inch, can have a marked effect on the precision control of the surfboard.
SUMMARY OF THE INVENTION In an embodiment of this invention, a rectangular shaped channel member is embedded in the underneath surface of a surfboard adjacent its aft end. The channel member has an opening on one side that is substantially flush with the under surface of the surfboard. A surfboard fin, having a longitudinal base member, fits into the open channel and is secured therein by fastening means. The fastening means are secured between grooves in the channel and the base member of the surfboard and are slidable in the grooves to afford an infinite adjustment in the longitudinal position of the surfboard fin relative to the surfboard, within the length of the channel member. The base member has a wedge shape that coacts with similarly inclined opposing longitudinal sides of the channel member, and is drawn into a abutting poice sition by the fastening means that secures the base member in the channel and against movement therein, until the fastening means is released.
Thus the fin member is longitudinally moved within the channel member to a given position and is securely fastened in this position. Appropriate indicia marking in the bottom of the channel allows the position of the fin to be determined through alignment between the indicia markings and the front edge of the base member. The surfer is thus able to make educated adjustments of the position of the base member and thus correlate the exact position of the fin to the operational handling of the surfboard to establish optimum positioning through trial and error methods.
Therefore it is an object of this invention to provide a new and improved adjustable surfboard fin holder.
It is another object of this invention to provide a new and improved adjustable surfboard fin holder that allows infinite adjustment of the longitudinal position of the surfboard fin within the length of the fin holder, and that rigidly holds the fin in the new position during surfmg.
It is another object of this invention to provide a new and improved surfboard holder that allows infinite adjustment of the logitudinal position of the surfboard fin with indica for establishing the position of the fin.
Other objects and many attended advantages will become more apparent upon reading the following detailed description and an examination of the drawings wherein:
FIG. 1 is a top plan view of a surfboard with the adjustable surfboard fin holder positioned therein.
FIG. 2 is a top plan view of a holder for adjustably holding a surfboard fin.
FIG. 3 is a cross sectional view taken along lines 3-3 of FIG. 1.
FIG. 4 is a cross sectional view taken along lines 44 of FIG. 3.
FIG. 5 is a side view of a surfboard fin with a base support member.
FIG. 6 is a cross sectional view taken along lines 6-6 of FIG. 5.
Referring now to the drawing, a surfboard 10 having any desired configuration and length, has a fin member 12 mounted on a base member 19 that is held in a holder 15. It should be understood that the holder is a separate structure that is fitted into a recessed slot in the underneath surface of the surfboard 10. The holder 15 is secured in this position, with its upper surface flush with the underneath surface of the surfboard 10, in any known manner such as by plastic, resins or any other suitable known means.
The surfboard fin 12, see FIG. 5, has a relatively narrow cross section and may have any suitable fin shape.
The integral base member 19 has a rectangular shape with sides 40 and 42 that incline inwardly, see FIG. 6.
The preferable angle of inclination is approximately five degrees. This provides a wedge shape for securely holding the base member 19 in position in the holder 15, as will be described in more detail hereinafter. The holder 15, see FIGS. 2, 3, and 4, comprises a rectangular channel member having an opening at one side. The opposing longitudinal sides have downwardly inclined surfaces 21 that correspond with the angle of the wedge shaped sides 40 and 42 of the basemember 19. The opposing longitudinal sides also have longitudinal grooves 38 on each side that are aligned and parallel to receive opposite ends of the plate members 26 and 28. Thus it may be understood that the plate members 26 and 28 slide longitudinally in the respective grooves 38 to desired positions along the length of the holder 15. An inward shoulder 36 provides additional structure strength to the sides of the holder 15. Raised portions 16 on the bottom 34 of the holder 15 are equally spaced to provide a measuring rule and have corresponding numbers that allow measured positioning of the fin 12. Opposing slits 24 in the opposite side of the holder 15, have a width slightly greater than the width of the plates 26 and 28 and have a depth corresponding to the depth of the grooves .38. The slots 24 allow movement of the plates vertically and out of the grooves 38. Each plate of plates 26 and 28 has a threaded opening 30 and 32 of receiving the threaded ends of bolts 46 and 48 that extend through vertical openings 50 in the base 19 of the fin 12. When tightened, the bolts 46 and 48 coact with plates 26 and 28 to draw the base member 19 and its wedged shaped cross section into engagement with the opposing sides of the holder 15.
In operation, the holder 15 is fixed in the surfboard and the plates 26 and 28 are inserted in grooves 38 through slots 24. The fin 12 is place in the opening of the holder and bolts 46 and 48 are threadably engaged with the plates 26 and 28. The surfboard fin is then moved longitudinally in the opening of the holder 15 until the desired positioning of the fin 12 is established. This positioning may be determined by correlating the end 18 of the base member 19 with he markings 16 on the bottom 34 of the holder 15. The bolts 46 and 48 are tightened drawing the respective members together forming a wedge fit that holds the fin base in the secured position. Because of the wedge fit, the base member 19 can be separated from the sides of the holder 15 in a quick and easy manner by merely loosening the bolts 46 and 48 and pulling outwardly on the fin 12.
It may be understood that in operation of this invention the base member 19 and the integral fin 12 may be slidably positioned to an infinite number of locations between the ends of holder 15. Thus the surfer can adjust the position of the fin 12 relative to the surfboard 10 to any desired position, and yet can obtain a rigid interconnection of the fin 12 with the surfboard structure 10 that protects against sliding movement of the fin 12.
Having described my invention, I now claim:
1. A surfboard fin assembly comprising:
a fin support having opposing longitudinally extending interior sidewalls and an elongated channel partially defined by the interior sidewalls,
a pair of elongated side blocks defined by the interior sidewalls,
a pair of elongated notches formed in the interior sidewalls,
a retaining plate having a pair of marginal edges coupled in the notches,
a fin having a positioning tongue sized for insertion into the channel,
one of said tongue and said fin having an enlarged section arranged to engage the side blocks,
and a locking element coupled to the fin, wherein when the locking element is tightened the retaining plate and the enlarged section are urged towards one another to exert clamping force against the side blocks and prevent relative movement between the fin and fin support.
2. An adjustable surfboard fin holder for providing infinite longitudinal positioning of the surfboard fin within given limits comprising:
a surfboard fin having a longitudinal base member,
a rectangular channel member having opposing longitudinal sides for reeciving said base member of said fin for being secured to the under surface of a surfboard,
each of said opposing sides having longitudinal grooves that are parallel,
releasable fastener means interconnecting said channel member with said base member for providing secured, longitudinal-positioning with infinite adjustment of said fin along the length of said channel member and the surfboard,
and said releasable fastener means including a pair of spaced plates with opposite ends positioned in said grooves for slidable movement in said channel member and bolt means for releasably securing said plates to said base member. 5 3. An adjustable surfboard fin holder as claimed in claim 2 in which:
said base member having a wedge shaped cross section,
and said fastener means draws said wedge shaped base member into abutting contact with said sides to securely hold said base member in said channel member.
4. An adjustable surfboard fin holder as claimed in claim 2 in which:
each of said plates having a threaded opening therethrough,
and said bolt means projecting through holes in said base member and coacting with said threaded openings for drawing said base member into said channel.
5. An adjustable surfboard fin holder as claimed in claim 4 in which:
each of said sides having aligned slots with a width slightly greater than the Width of each said plates and a depth substantially equal to the depth of said grooves, whereby said plates can be removed from said grooves through said slots.
6. An adjustable surfboard fin holder as claimed in claim 4 in which:
said base member having a fiat lower surface with a recessed space at each end for receiving one of said plates, whereby said fastener means is capable of drawing said lower surface to a point adjacent to or below said grooves.
7. An adjustable surfboard fin holder as claimed in 35 claim 2 in which:
the bottom surface of said channel having longitudinally spaced marks with indicia for coacting with one end of said base member and measuring the current longitudinal position of said fin relative to the surfboard.
8. An adjustable surfboard fin holder for providing infinite longitudinal positioning of the surfboard fin within given limits comprising:
a surfboad fin having a longitudinal base member,
a rectangular channel member for receiving said base member of said fin for being secured to the under surface of a surfboard,
and releasable fastener means interconnecting said channel member with said base member for creating frictional engagement of said longitudinal base member with said channel member providing secured, longitudinal positioning with infinite adjustment of said fin along the length of said channel member and the surfboard.
9. An adjustable surfboard fin holder as claimed in claim 8 in which:
said channel member having opposing sides,
said base member having a wedge shaped cross section for fitting between said opposing longitudinal sides,
and said fastener means having means for drawing said wedged shaped base member into abutting contact with said sides to frictionally hold said base member in said channel member in a given position along the length of said channel member.
longitudinal MILTON BUCHLER, Primary Examiner P. E. SAUBERER, Assistant Examiner
US768253A 1968-10-17 1968-10-17 Adjustable surfboard fin holder Expired - Lifetime US3564632A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76825368A 1968-10-17 1968-10-17

Publications (1)

Publication Number Publication Date
US3564632A true US3564632A (en) 1971-02-23

Family

ID=25081960

Family Applications (1)

Application Number Title Priority Date Filing Date
US768253A Expired - Lifetime US3564632A (en) 1968-10-17 1968-10-17 Adjustable surfboard fin holder

Country Status (1)

Country Link
US (1) US3564632A (en)

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747138A (en) * 1970-10-26 1973-07-24 D Morgan Hydrofoil surfboards
US3965514A (en) * 1975-01-30 1976-06-29 Shafer Arthur B Adjustable and/or removable fin for surfboards
US4037279A (en) * 1975-10-17 1977-07-26 Ziebart Herbert F Water ski
US4325154A (en) * 1980-03-31 1982-04-20 Collum Jr William E Surfboard fin
US4340376A (en) * 1980-07-30 1982-07-20 Williams Warren S Surfboard locking device
US4582015A (en) * 1984-09-21 1986-04-15 Hunter James A Water ski rack
US4604070A (en) * 1983-01-28 1986-08-05 Mckee Bruce C Ski board having angularly adjustable binding
US4701144A (en) * 1986-03-13 1987-10-20 Dewitt Iii Glen A Breakaway surfboard fin holder
EP0374138A1 (en) * 1987-04-13 1990-06-27 BEACHAM, Christopher James Flanged fin for watercraft
US4964826A (en) * 1988-01-20 1990-10-23 Lobe Henry J Sailboard fin retaining member
WO1990013472A1 (en) * 1989-05-09 1990-11-15 Zander Wolf Dietrich Device for releasably fastening a fin shaft
DE4012621A1 (en) * 1989-05-09 1991-02-07 Zander Wolf Dietrich Releasable fastener for centre-board shaft
US5038698A (en) * 1989-09-29 1991-08-13 Bic Corporation Daggerfin adjustable sailboard skeg
US5109683A (en) * 1989-02-01 1992-05-05 Cartwright Gavin L Wind surfer lock
US5133681A (en) * 1991-05-10 1992-07-28 Lobe Henry J Frangible sailboard fin retaining member
US5148761A (en) * 1989-09-29 1992-09-22 Bic Corporation Daggerfin adjustable sailboard skeg
US5356324A (en) * 1993-09-13 1994-10-18 Cunningham Eugene F Retractable, and adjustable fin box mechanism
US5567190A (en) * 1995-05-22 1996-10-22 Oates; Kenneth W. Variable angle of attack finbox assembly for surfboards and the like
WO2000032466A1 (en) * 1998-12-01 2000-06-08 John De Courcey Milne Surfboards and fittings for surfboards
FR2823175A1 (en) * 2001-04-10 2002-10-11 Guy Munoz Positioning and fixing device for centerboard in casing comprises centerboard base with beveled side connected to beveled wedge which are positioned in casing groove
US20030159475A1 (en) * 2002-02-22 2003-08-28 Tan Calvin Conrad Sportsboard locking apparatus
US6764364B1 (en) 2002-10-21 2004-07-20 Scott Noble Hickman Surf craft snap-in fin system
US6763689B1 (en) * 2003-11-28 2004-07-20 Jerry L. Thomas Surfboard lock system
US20040242093A1 (en) * 2001-06-29 2004-12-02 Dean Geraghty Method and apparatus for attaching a fin to a small watercraft
US7481690B2 (en) 2006-08-23 2009-01-27 Toshimichi Shibata Surfboard fin
US20100173546A1 (en) * 2009-01-08 2010-07-08 Tzong In Yeh Retaining structure for removably mounting a surfboard fin
US20170073047A1 (en) * 2014-05-15 2017-03-16 Flying Fin Systems Pty Ltd Adjustable fin system
US9688365B2 (en) 2012-07-09 2017-06-27 Fin Control Systems Pty Limited Fin plug for water craft
US9957021B2 (en) 2012-11-14 2018-05-01 Fin Control Systems Pty. Limited Fin plug for a water craft
US10279874B1 (en) 2017-11-01 2019-05-07 John Field Quick-connect fin retention system for a water craft
USD857827S1 (en) 2016-12-01 2019-08-27 Blue Springs Partners, Llc Fin shaped swimming device
US10577060B2 (en) 2017-07-17 2020-03-03 Larry Hawes Adjustable fin assembly for watercraft
US11115568B2 (en) * 2017-05-02 2021-09-07 John Immel Fin shaped underwater camera housing and system incorporating same
USD1007627S1 (en) * 2023-08-11 2023-12-12 Zhongwen Xu Surfboard fin

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747138A (en) * 1970-10-26 1973-07-24 D Morgan Hydrofoil surfboards
US3965514A (en) * 1975-01-30 1976-06-29 Shafer Arthur B Adjustable and/or removable fin for surfboards
US4037279A (en) * 1975-10-17 1977-07-26 Ziebart Herbert F Water ski
US4325154A (en) * 1980-03-31 1982-04-20 Collum Jr William E Surfboard fin
US4340376A (en) * 1980-07-30 1982-07-20 Williams Warren S Surfboard locking device
US4604070A (en) * 1983-01-28 1986-08-05 Mckee Bruce C Ski board having angularly adjustable binding
US4582015A (en) * 1984-09-21 1986-04-15 Hunter James A Water ski rack
US4701144A (en) * 1986-03-13 1987-10-20 Dewitt Iii Glen A Breakaway surfboard fin holder
EP0374138A4 (en) * 1987-04-13 1991-07-24 Christopher James Beacham Flanged fin for watercraft
EP0374138A1 (en) * 1987-04-13 1990-06-27 BEACHAM, Christopher James Flanged fin for watercraft
US4964826A (en) * 1988-01-20 1990-10-23 Lobe Henry J Sailboard fin retaining member
US5109683A (en) * 1989-02-01 1992-05-05 Cartwright Gavin L Wind surfer lock
WO1990013472A1 (en) * 1989-05-09 1990-11-15 Zander Wolf Dietrich Device for releasably fastening a fin shaft
DE4012621A1 (en) * 1989-05-09 1991-02-07 Zander Wolf Dietrich Releasable fastener for centre-board shaft
US5038698A (en) * 1989-09-29 1991-08-13 Bic Corporation Daggerfin adjustable sailboard skeg
US5148761A (en) * 1989-09-29 1992-09-22 Bic Corporation Daggerfin adjustable sailboard skeg
US5133681A (en) * 1991-05-10 1992-07-28 Lobe Henry J Frangible sailboard fin retaining member
US5356324A (en) * 1993-09-13 1994-10-18 Cunningham Eugene F Retractable, and adjustable fin box mechanism
US5567190A (en) * 1995-05-22 1996-10-22 Oates; Kenneth W. Variable angle of attack finbox assembly for surfboards and the like
WO2000032466A1 (en) * 1998-12-01 2000-06-08 John De Courcey Milne Surfboards and fittings for surfboards
FR2823175A1 (en) * 2001-04-10 2002-10-11 Guy Munoz Positioning and fixing device for centerboard in casing comprises centerboard base with beveled side connected to beveled wedge which are positioned in casing groove
US20040242093A1 (en) * 2001-06-29 2004-12-02 Dean Geraghty Method and apparatus for attaching a fin to a small watercraft
US7108571B2 (en) * 2001-06-29 2006-09-19 Dean Geraghty Method and apparatus for attaching a fin to a small watercraft
US20030159475A1 (en) * 2002-02-22 2003-08-28 Tan Calvin Conrad Sportsboard locking apparatus
US6691537B2 (en) * 2002-02-22 2004-02-17 Calvin Conrad Tan Sportsboard locking apparatus
US6764364B1 (en) 2002-10-21 2004-07-20 Scott Noble Hickman Surf craft snap-in fin system
US6763689B1 (en) * 2003-11-28 2004-07-20 Jerry L. Thomas Surfboard lock system
US7481690B2 (en) 2006-08-23 2009-01-27 Toshimichi Shibata Surfboard fin
US20100173546A1 (en) * 2009-01-08 2010-07-08 Tzong In Yeh Retaining structure for removably mounting a surfboard fin
US9862467B2 (en) 2012-07-09 2018-01-09 Fin Control Systems Pty Limited Securing mechanism for water craft fin
US9688365B2 (en) 2012-07-09 2017-06-27 Fin Control Systems Pty Limited Fin plug for water craft
US10377452B2 (en) 2012-07-09 2019-08-13 Fin Control Systems Pty Limited Fin plug for water craft
US9957021B2 (en) 2012-11-14 2018-05-01 Fin Control Systems Pty. Limited Fin plug for a water craft
US20170073047A1 (en) * 2014-05-15 2017-03-16 Flying Fin Systems Pty Ltd Adjustable fin system
US9926051B2 (en) * 2014-05-15 2018-03-27 Flying Fin Systems Pty Ltd Adjustable fin system
US10676165B2 (en) 2014-05-15 2020-06-09 Flying Fin Systems Pty Ltd Adjustable fin system
USD857827S1 (en) 2016-12-01 2019-08-27 Blue Springs Partners, Llc Fin shaped swimming device
US11115568B2 (en) * 2017-05-02 2021-09-07 John Immel Fin shaped underwater camera housing and system incorporating same
US20220006927A1 (en) * 2017-05-02 2022-01-06 John Immel Fin Shaped Underwater Camera Housing and System Incorporating Same
US11871096B2 (en) * 2017-05-02 2024-01-09 John Immel Fin shaped underwater camera housing and system incorporating same
US10577060B2 (en) 2017-07-17 2020-03-03 Larry Hawes Adjustable fin assembly for watercraft
US10279874B1 (en) 2017-11-01 2019-05-07 John Field Quick-connect fin retention system for a water craft
USD1007627S1 (en) * 2023-08-11 2023-12-12 Zhongwen Xu Surfboard fin

Similar Documents

Publication Publication Date Title
US3564632A (en) Adjustable surfboard fin holder
US3579681A (en) Sectional and longitudinally adjustable surfboard fin assembly
US4604070A (en) Ski board having angularly adjustable binding
US20030220030A1 (en) Sportboard fin attachment system
US4044416A (en) Surfboard with adjustable fin
US3659300A (en) Fin attachment structure for surfboards
US4421492A (en) Adjustable fin system
US3137014A (en) Water ski binder
US3802714A (en) Riding deck for a monoski
AU2015258777B2 (en) Adjustable fin system
US3899186A (en) Ski having base blocks for securing bindings
US3164119A (en) Hydrofoil lift
US4175736A (en) Ski holding system
US4264087A (en) Ski-binding support
US5567190A (en) Variable angle of attack finbox assembly for surfboards and the like
ES2207849T3 (en) DEVICE CONVERSION DEVICE.
US4331093A (en) Composite wind surfboard
US4273062A (en) Device for connecting a sailmast to a sailboard
US4730568A (en) Waterborne craft
JPH0138039B2 (en)
US3436778A (en) Boat portaging and carrying device
US2970325A (en) Water ski harness
US2919452A (en) Binding for water skis
US4779890A (en) Equipment for a monoski
US2900648A (en) Water ski harness

Legal Events

Date Code Title Description
PS Patent suit(s) filed