US3670977A - Self-contained cable reel - Google Patents

Self-contained cable reel Download PDF

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Publication number
US3670977A
US3670977A US72270A US3670977DA US3670977A US 3670977 A US3670977 A US 3670977A US 72270 A US72270 A US 72270A US 3670977D A US3670977D A US 3670977DA US 3670977 A US3670977 A US 3670977A
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Prior art keywords
drum
cable
feed screw
unit
housing
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Expired - Lifetime
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US72270A
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Roger L Boneck
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4402—Guiding arrangements to control paying-out and re-storing of the material
    • B65H75/4405—Traversing devices; means for orderly arranging the material on the drum
    • B65H75/4407—Traversing devices; means for orderly arranging the material on the drum positively driven, e.g. by a transmission between the drum and the traversing device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4457—Arrangements of the frame or housing
    • B65H75/4471—Housing enclosing the reel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/35—Ropes, lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0183—Details, e.g. winch drums, cooling, bearings, mounting, base structures, cable guiding or attachment of the cable to the drum
    • B66D2700/0191—Cable guiding during winding or paying out

Definitions

  • a self-contained reel unit includes an outer housing having a rotary drum mounted therein. A cable is pulled into the housing and wound upon the drum. A feed screw and cable guide and support member deposits the cable uniformly across the surface of the drum. The feed screw and cable guide reverses to play out the cable as it is unwound from the drum.
  • An object of my invention is to provide a self-contained cable reel device that which winds up or plays out a cable, by means of a double acting drive.
  • Another object of my invention is to provide a device of the character described, which is provided with an outer housing an inner revolving drum, onto which the cable is wound or played out.
  • Still another object is to provide a device that is designed to accommodate a screw actuated mechanism for unifonnly distributing the cable in layers onto the revolving drum.
  • a further object of the invention is to construct a cable reel device so it may be mounted either horizontally or vertically to perform its function.
  • a still further object is to provide a cable reel device that is totally enclosed for safety purposes.
  • a cable actuated mechanism may be used in elevators, hoisting devices, or the like.
  • the cable moves at a predetermined speed while in operation. As it so moves, the cable is pulled into or let out of a cylindrical housing. Inside the housing, it reels over a cable guide and support which lays the cable down in a layered orientation.
  • FIG. 1 is a fragmentary cross-sectional view of the entire assembled device
  • FIG. 2 is a cross-sectional view of the device taken at the line 2-2 in FIG. 1;
  • FIG. 3 is a cross-section of the device taken at the line 3-3 in FIG. 1;
  • FIG. 4 is an end view of the cable support unit, in its relation to the cable drum;
  • FIG. 5 is a cross-sectional view of a cable guide and support
  • FIG. 6 is a modified type of cable guide and support equipped with a plurality of rollers to guide the cable;
  • FIG. 7 is a perspective view of the outside of the end plate supporting the shafts with the gears mounted thereon;
  • FIG. 8 is a perspective view of the inside of the plate shown in FIG. 7;
  • FIG. 9 is a perspective view of the inside of the other end plate.
  • FIG. 10 is an outside view of the plate shown in FIG. 9.
  • the character 10 identifies a drum of cylindrical contour having spider mounting means 11 at either end thereof.
  • a shaft 12, or in any other convenient and efficient means, passes through a hearing at the center of the spider II.
  • the shah 12 is joumaled on one end in a bearing 13 which is attached to an end plate 14 mounted at the end of an outer cylindrical casing 15, by means of screws 16, or the like.
  • the other end of the shaft 12 is journaled in a bearing 17 attached to another end plate 18, which is also mounted within the outer casing 15, by means of screws 19, or in any other convenient manner.
  • a threaded rod, or shaft 20 is mounted paralleled to the axis of the drum 10 on one end, in a bearing 21 on the plate 18, and the rod 20 extends outward beyond a cover plate 24 fastened at 25 to the casing 15. On the other end, shaft 20 is mounted in a bearing 22 on the plate 14. Obviously all anngs may be of any suitable and conventional design.
  • the threaded rod 20 is attached to a drive gear 23. This rod 20 is actuated and revolved by means of a motor M, or any other suitable and reversible driving means.
  • the end of the shaft 12, which is supported by the bearing 17 on the plate 18, is equipped with a driven gear 26, in meshing alignment with the drive gear 23.
  • the drum motor M both drives shaft 20 and rotates the drum 10 in a direct and fixed ratio, since the peripheral surface of the driven gear 26 is rotated by the drive gear 23.
  • This unit consists of a body 29, threadedly driven by the rotation of the threaded rod 20.
  • the body 29 (see FIG. 4), is equipped with a rolling member (such as a ball bearing) 30, or any other contact, member for engagement with the surface of the cable drum 10.
  • the body 29 rotatably supports a pulley 31 on an axis perpendicular to said feed screws, over which the cable 32 passes as it enters or leaves the somewhat rounded, funnel shaped (FIG. 5) guide 33 on the outside of the end plate 14.
  • the longitudinal cross section of the pulley is tangential to the surface of the drum.
  • the guide 33 is attached to plate 14 by rivets 34.
  • I show a cable guide, of modified design, supporting four orthogonally mounted pulleys or rollers 35 for making contact at 36 with the cable 32 as it enters the unit.
  • end of the cable 32 may be inserted into an aperture in the drum 10 at 37.
  • the cable 32 is wrapped and disposed in a layer around the drum 10 as shown at 39.
  • the cable guide and support 27 guides the cable 32 in uniformly layered orientation onto the drum 10 (see FIG. I).
  • member 27 guides the cable 32, moving it from the drum l0 and outward through the guide 33.
  • the plates 18 and 24 are shown attached to the outer cylinder 15 and 19 and 25 Together, they provide a cover for the gears 23 and 26. In this manner the entire device is a selfcontained unit. There can not be any outside contact with the cable being wound on the drum 10.
  • a self-contained reel unit including an outer housing having a drum rotatably mounted therein,
  • a feed screw in said housing mounted parallel to the axis of said drum
  • drum and feed screw being geared together to turn as a unit at a fixed ratio
  • said guide and support means including at least one pulley therein mounted on said body to rotate on an axis perpendicular to the longitudinal axis of said drum and said feed screw,

Abstract

A self-contained reel unit includes an outer housing having a rotary drum mounted therein. A cable is pulled into the housing and wound upon the drum. A feed screw and cable guide and support member deposits the cable uniformly across the surface of the drum. The feed screw and cable guide reverses to play out the cable as it is unwound from the drum.

Description

United States Patent Boneck 1 June 20, 1972 I541 SELF-CONTAINED CABLE REEL [72] Inventor: Roger L. Boneck, W440, N-SSSO Lilly Road, Menomonee Falls, Wis. 53051 22 Filed: Sept. 15,1970
2: App]. No.: 72,210
[52] U.S. Cl. ..242/54 R, 242/117, 242/ 158.2 [51] ..B65h 57/28, B65h 75/00 [58] Field otSearch ..242/1 17, 54 R, 54 A, 158.2,
[56] References Cited UNITED STATES PATENTS 3,347,490 10/1967 Browning ..242/54 Meline et al. ..242/l58.2 X ..242/l58 R ..242/54 R 3,202,372 8/1965 2,740,594 4/ 1956 Stevens 2,316,798 4/ l 943 Luebbe Primary Examiner-George F. Mautz Attorney-Alter, Weiss and \Vhitesel [57] ABSTRACT A self-contained reel unit includes an outer housing having a rotary drum mounted therein. A cable is pulled into the housing and wound upon the drum. A feed screw and cable guide and support member deposits the cable uniformly across the surface of the drum. The feed screw and cable guide reverses to play out the cable as it is unwound from the drum.
4 China, 10 Drawing figures 1 III ,mummrhi PATENTEDJUHZO 12. 2
INVENTOR F166 ROGER BONECK BY w ww ATTO R N E Y5 SELF-CONTAINED CABLE REEL My invention relates to. improvements in cable reels, and more particularly to a mechanically actuated reel for winding and releasing the cable.
Reels, winches, windlasses, and the like, are used for wind ing up and playing out cables. Usually, there is an exposed shaft or drum on which the cable is wound. This may be suitable in many installations where the cable and winch are enclosed within a house, room, or other structure. However, it is not suitable if the winch is exposed under conditions where either people or things are liable to be caught into the cable as it is wound on the winch. Accordingly, there is a need for a self-contained winch which is completely enclosed and causes neither a safety nor a cleanliness hazzard.
An object of my invention is to provide a self-contained cable reel device that which winds up or plays out a cable, by means of a double acting drive.
Another object of my invention is to provide a device of the character described, which is provided with an outer housing an inner revolving drum, onto which the cable is wound or played out.
Still another object is to provide a device that is designed to accommodate a screw actuated mechanism for unifonnly distributing the cable in layers onto the revolving drum.
A further object of the invention is to construct a cable reel device so it may be mounted either horizontally or vertically to perform its function.
A still further object is to provide a cable reel device that is totally enclosed for safety purposes.
In keeping with an aspect of the invention, a cable actuated mechanism may be used in elevators, hoisting devices, or the like. The cable moves at a predetermined speed while in operation. As it so moves, the cable is pulled into or let out of a cylindrical housing. Inside the housing, it reels over a cable guide and support which lays the cable down in a layered orientation.
Other and further objects of my invention will become more apparent as the description proceeds, when taken in conjunction with the drawings, in which:
FIG. 1 is a fragmentary cross-sectional view of the entire assembled device;
FIG. 2 is a cross-sectional view of the device taken at the line 2-2 in FIG. 1;
FIG. 3 is a cross-section of the device taken at the line 3-3 in FIG. 1;
FIG. 4 is an end view of the cable support unit, in its relation to the cable drum;
FIG. 5 is a cross-sectional view of a cable guide and support;
FIG. 6 is a modified type of cable guide and support equipped with a plurality of rollers to guide the cable;
FIG. 7 is a perspective view of the outside of the end plate supporting the shafts with the gears mounted thereon;
FIG. 8 is a perspective view of the inside of the plate shown in FIG. 7;
FIG. 9 is a perspective view of the inside of the other end plate; and
FIG. 10 is an outside view of the plate shown in FIG. 9.
Similar reference characters indicate corresponding parts and features, throughout the several views. More particularly, the character 10 identifies a drum of cylindrical contour having spider mounting means 11 at either end thereof. A shaft 12, or in any other convenient and efficient means, passes through a hearing at the center of the spider II. The shah 12 is joumaled on one end in a bearing 13 which is attached to an end plate 14 mounted at the end of an outer cylindrical casing 15, by means of screws 16, or the like. The other end of the shaft 12 is journaled in a bearing 17 attached to another end plate 18, which is also mounted within the outer casing 15, by means of screws 19, or in any other convenient manner.
A threaded rod, or shaft 20 is mounted paralleled to the axis of the drum 10 on one end, in a bearing 21 on the plate 18, and the rod 20 extends outward beyond a cover plate 24 fastened at 25 to the casing 15. On the other end, shaft 20 is mounted in a bearing 22 on the plate 14. Obviously all anngs may be of any suitable and conventional design. The threaded rod 20 is attached to a drive gear 23. This rod 20 is actuated and revolved by means of a motor M, or any other suitable and reversible driving means.
The end of the shaft 12, which is supported by the bearing 17 on the plate 18, is equipped with a driven gear 26, in meshing alignment with the drive gear 23. In this manner, the drum motor M both drives shaft 20 and rotates the drum 10 in a direct and fixed ratio, since the peripheral surface of the driven gear 26 is rotated by the drive gear 23.
A cable guide and support unit, generally shown as 27, threadedly engages the rod 20 at 28. This unit consists of a body 29, threadedly driven by the rotation of the threaded rod 20. The body 29 (see FIG. 4), is equipped with a rolling member (such as a ball bearing) 30, or any other contact, member for engagement with the surface of the cable drum 10. The body 29 rotatably supports a pulley 31 on an axis perpendicular to said feed screws, over which the cable 32 passes as it enters or leaves the somewhat rounded, funnel shaped (FIG. 5) guide 33 on the outside of the end plate 14. The longitudinal cross section of the pulleyis tangential to the surface of the drum. The guide 33 is attached to plate 14 by rivets 34. In FIG. 6, I show a cable guide, of modified design, supporting four orthogonally mounted pulleys or rollers 35 for making contact at 36 with the cable 32 as it enters the unit.
By referring to FIG. 1, I show that end of the cable 32 may be inserted into an aperture in the drum 10 at 37. The cable 32 is wrapped and disposed in a layer around the drum 10 as shown at 39. When the rod 20 is rotated, the cable guide and support 27 guides the cable 32 in uniformly layered orientation onto the drum 10 (see FIG. I). When the rod 20 rotates in a reversed direction, member 27 guides the cable 32, moving it from the drum l0 and outward through the guide 33.
The plates 18 and 24 are shown attached to the outer cylinder 15 and 19 and 25 Together, they provide a cover for the gears 23 and 26. In this manner the entire device is a selfcontained unit. There can not be any outside contact with the cable being wound on the drum 10.
Although I have shown a specific construction, many changes may be made without efi'ecting the operativeness of the device; therefore, the claims are to be construed to cover all equivalents which fall within the spirit and the scope of my invention.
I claim:
1. A self-contained reel unit including an outer housing having a drum rotatably mounted therein,
a feed screw in said housing mounted parallel to the axis of said drum,
cable guide and support means mounted on a body threadedly mounted on said feed screw,
said drum and feed screw being geared together to turn as a unit at a fixed ratio,
entrance means for threading a cable through an end of said housing and holding said cable parallel to said feed screw and non-contiguous to said drum until wound onto said drum,
said guide and support means including at least one pulley therein mounted on said body to rotate on an axis perpendicular to the longitudinal axis of said drum and said feed screw,
the longitudinal cross section of said at least one pulley being tangential to the surface of said drum, and bearing means for slidingly supporting the said body on the surface of said drum.
2. The unit of claim I wherein said bearing surface is a ball bearing rotatably mounted in said body.
3. The unit of claim 2, wherein said entrance means comprises a rounded funnel shaped means.
4. The unit of claim 1 wherein said entrance means comprises four orthogonally mounted pulley wheels.
# i l i t

Claims (4)

1. A self-contained reel unit including an outer housing having a drum rotatably mounted therein, a feed screw in said housing mounted parallel to the axis of said drum, cable guide and support means mounted on a body threadedly mounted on said feed screw, said drum and feed screw being geared together to turn as a unit at a fixed ratio, entrance means for threading a cable through an end of said housing and holding said cable parallel to said feed screw and non-contiguous to said drum until wound onto said drum, said guide and support means includIng at least one pulley therein mounted on said body to rotate on an axis perpendicular to the longitudinal axis of said drum and said feed screw, the longitudinal cross section of said at least one pulley being tangential to the surface of said drum, and bearing means for slidingly supporting the said body on the surface of said drum.
2. The unit of claim 1 wherein said bearing surface is a ball bearing rotatably mounted in said body.
3. The unit of claim 2, wherein said entrance means comprises a rounded funnel shaped means.
4. The unit of claim 1 wherein said entrance means comprises four orthogonally mounted pulley wheels.
US72270A 1970-09-15 1970-09-15 Self-contained cable reel Expired - Lifetime US3670977A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5257746A (en) * 1990-01-23 1993-11-02 Saab Missiles Aktiebolag Device for winding and unwinding a wire
US6279848B1 (en) 2000-04-14 2001-08-28 Great Stuff, Inc. Reel having an improved reciprocating mechanism
US6382241B1 (en) 2001-04-05 2002-05-07 Arthur Setrum Vacuum hose assembly for a permanently installed building vacuum cleaner system
EP1205417A2 (en) * 2000-11-09 2002-05-15 Niederholz GmbH Transport unit for electric cable
US20060266605A1 (en) * 2005-05-31 2006-11-30 Caamano Ramon A Reel and reel housing
US20110193037A1 (en) * 2010-02-05 2011-08-11 Smith Frederick L Windlass System and Method
US20140175252A1 (en) * 2012-12-21 2014-06-26 Donald Aloysius Hoffend, Jr. Compact Hoist System
US9368303B2 (en) 2010-08-31 2016-06-14 Great Stuff, Inc. Electrical cord reel with control system to limit overheating
CN107434187A (en) * 2017-06-22 2017-12-05 国家电网公司 A kind of novel power supply case take-up and pay-off device
US10183850B2 (en) 2012-12-21 2019-01-22 Electronic Theatre Controls, Inc. Compact hoist system
US10799809B2 (en) 2007-11-08 2020-10-13 Electronic Theatre Controls, Inc. Lift assembly systems and methods

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316798A (en) * 1939-01-19 1943-04-20 Cletus L Luebbe Kinetic projector
US2740594A (en) * 1953-06-04 1956-04-03 Daniel F Stevens Guide for winding a strand on a spool, bobbin and the like
US3202372A (en) * 1963-11-12 1965-08-24 Harry R Meline Cable storage and retriever unit
US3347490A (en) * 1966-02-16 1967-10-17 Collins Radio Co Level wind for airborne trailing wire antenna parallel to the drum axis

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316798A (en) * 1939-01-19 1943-04-20 Cletus L Luebbe Kinetic projector
US2740594A (en) * 1953-06-04 1956-04-03 Daniel F Stevens Guide for winding a strand on a spool, bobbin and the like
US3202372A (en) * 1963-11-12 1965-08-24 Harry R Meline Cable storage and retriever unit
US3347490A (en) * 1966-02-16 1967-10-17 Collins Radio Co Level wind for airborne trailing wire antenna parallel to the drum axis

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5257746A (en) * 1990-01-23 1993-11-02 Saab Missiles Aktiebolag Device for winding and unwinding a wire
US6279848B1 (en) 2000-04-14 2001-08-28 Great Stuff, Inc. Reel having an improved reciprocating mechanism
US6422500B2 (en) 2000-04-14 2002-07-23 Great Stuff, Inc. Reel having an improved reciprocating mechanism
EP1205417A2 (en) * 2000-11-09 2002-05-15 Niederholz GmbH Transport unit for electric cable
EP1205417A3 (en) * 2000-11-09 2003-01-08 Niederholz GmbH Transport unit for electric cable
US6382241B1 (en) 2001-04-05 2002-05-07 Arthur Setrum Vacuum hose assembly for a permanently installed building vacuum cleaner system
US20060266605A1 (en) * 2005-05-31 2006-11-30 Caamano Ramon A Reel and reel housing
US7419038B2 (en) 2005-05-31 2008-09-02 Great Stuff, Inc. Reel and reel housing
US20090057085A1 (en) * 2005-05-31 2009-03-05 Great Stuff, Inc. Reel and reel housing
US20110141634A1 (en) * 2005-05-31 2011-06-16 Great Stuff, Inc. Temperature control system for electrical cord reel
US8201673B2 (en) 2005-05-31 2012-06-19 Great Stuff, Inc. Temperature control system for electrical cord reel
US10799809B2 (en) 2007-11-08 2020-10-13 Electronic Theatre Controls, Inc. Lift assembly systems and methods
EP2531435A1 (en) * 2010-02-05 2012-12-12 Frederick L. Smith Windlass system and method
US8517348B2 (en) * 2010-02-05 2013-08-27 Frederick L. Smith Windlass system and method
EP2531435A4 (en) * 2010-02-05 2013-10-16 Frederick L Smith Windlass system and method
US20110193037A1 (en) * 2010-02-05 2011-08-11 Smith Frederick L Windlass System and Method
US9368303B2 (en) 2010-08-31 2016-06-14 Great Stuff, Inc. Electrical cord reel with control system to limit overheating
US20140175252A1 (en) * 2012-12-21 2014-06-26 Donald Aloysius Hoffend, Jr. Compact Hoist System
US9700810B2 (en) * 2012-12-21 2017-07-11 Donald Aloysius Hoffend, Jr. Compact hoist system
US9962621B2 (en) * 2012-12-21 2018-05-08 Electronic Theatre Controls, Inc. Compact hoist system
US10183850B2 (en) 2012-12-21 2019-01-22 Electronic Theatre Controls, Inc. Compact hoist system
US11111117B2 (en) 2012-12-21 2021-09-07 Electronic Theatre Controls, Inc. Compact hoist system
US11319198B2 (en) 2012-12-21 2022-05-03 Electronic Theatre Controls, Inc. Compact hoist accessories and combination systems
CN107434187A (en) * 2017-06-22 2017-12-05 国家电网公司 A kind of novel power supply case take-up and pay-off device

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