US1940855A - Knife - Google Patents
Knife Download PDFInfo
- Publication number
- US1940855A US1940855A US546820A US54682031A US1940855A US 1940855 A US1940855 A US 1940855A US 546820 A US546820 A US 546820A US 54682031 A US54682031 A US 54682031A US 1940855 A US1940855 A US 1940855A
- Authority
- US
- United States
- Prior art keywords
- handle
- knife
- blade
- construction
- spring
- 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
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
- A61B17/3211—Surgical scalpels, knives; Accessories therefor
- A61B17/3213—Surgical scalpels, knives; Accessories therefor with detachable blades
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17128—Self-grasping
- Y10T279/17162—Yielding detent
Definitions
- Knives of this class thus far offered to the profession have presented numerous difiiculties in changing from one blade to another.
- One of the objects of my invention is to provide a construction which will permit the several blades to be changed easily and quickly.
- Another object is to provide a construction admitting of greater nicety of balance and design.
- a further object is to provide a construction which will reduce the danger of personal injury to a minimum while changing blades.
- Figure 1 is a side elevation of the knife
- Fig. 2 is a top view
- Fig. 3 is an enlargedview of, the knife with part of the handle broken away; a
- Fig. 4 is a section on the line 44 of Fig. 2;
- Fig. 5 is a fragmentary section showing the retaining spring in its raised position and a modified form of blade-positioning means
- Fig. 6 is a section on the line 6-6 of Fig. 4.
- the construction shown comprises a knife blade 1 removably retained in the slotted portion 2 of the ham dle 3 by means of the rivets 4 and the retaining spring5.
- the spring 5 has, at its forward end, an angular portion so formed as to be received in which my invention is illusin the slot 7 of the blade 1.
- the slottedportion of the handle 3 has a suitable hole 8 bored into it to receive and permit the necessary motion of the headed plunger or push button 9, said plunger having a head 10 to prevent its falling from the knife.
- the knife blade 1 may be positioned by means of the rib 4a, as shown in Fig. 5, and then retained in position by the retaining spring 5, as before.
- the user To detach a blade, the user simply grasps the handle in one hand and'presses on the push button 9 with the thumb to movethe latch portion 6 out of the notch '7 in the back of the blade, enabling the bladev to be readily withdrawn lengthwise from engagement with the handle.
- V i I i In the embodiment shown I have provided a construction which will cause the blade to be posibutton having'a portion engageable for operation tively locked-in position and yet be readily removable. It will be seen that that the construction described enables the blades to be changed easily and quickly without danger of injury to the user. It is also apparent that while I have shown and described a surgical knife, this invention may be'used with any knife or device wherein it is necessary to use interchangeable blades.
- a knife construction comprising a handle, a blade having a longitudinally extending openended slot in its securing portion, said handle having positioning means which enter the slot in assembly, and means for detachably securing said blade to said handle comprising a cantilever leaf spring member mounted on the handle and extending along the back thereof and having a latch portion adjacent its free end'for engaging an edge of the securing portion and a push button extending transversely through the handle and engaging a portion of the leaf spring intermediate its secured end and its free end, for moving the spring to releasing position, said push on the side of the handle opposite that along which the leaf spring extends.
- a knife construction comprising a handle, a blade having a longitudinally extending openendedslot in its securing portion, said handle having positioning means which enter the slot in assembly, and means for detachably securing said blade to said'handle comprising a cantilever leaf spring member mounted on the handle and ex tending along the back thereof and having a latch 10o portion adjacent its free end for engagingan edge of the securing portion and a push button extending transversely through the handle and engaging a portion of the leaf spring interme diateits secured end and its free end for mov- 05 ing the spring to releasing position, said push button having a portion engageable for operation on [the side of the handle opposite that along which the leaf spring extends, said leaf spring member having a shank portion extending into the handle and frictionally'held therein whereby the spring can be readily removed for repair and-replacement.
Description
Dec. 26, 1933. FREEMAN} 1,940,855
KNIFE Original Filed June 25, 1951 132 2022 for Patented Dec. 26, 1933 UNITED STATES 1,940,855 KNIFE Hugo Friedman, Chicago, Ill.
Application June 25, 1931,-Serial No. 546,820
Renewed June 5," 1933 2 Claims.
ticularly to dental or surgical knives having detachable blades. Knives of this class thus far offered to the profession have presented numerous difiiculties in changing from one blade to another.
One of the objects of my invention is to provide a construction which will permit the several blades to be changed easily and quickly.
Another object is to provide a construction admitting of greater nicety of balance and design.
A further object is to provide a construction which will reduce the danger of personal injury to a minimum while changing blades.
Further objects will appear from the description and claims.
In the drawin trated,
Figure 1 is a side elevation of the knife;
Fig. 2 is a top view;
Fig. 3 is an enlargedview of, the knife with part of the handle broken away; a
Fig. 4 is a section on the line 44 of Fig. 2;
Fig. 5 is a fragmentary section showing the retaining spring in its raised position and a modified form of blade-positioning means, and
Fig. 6 is a section on the line 6-6 of Fig. 4.
Referring to the drawing in detail, the construction shown comprises a knife blade 1 removably retained in the slotted portion 2 of the ham dle 3 by means of the rivets 4 and the retaining spring5. The spring 5 has, at its forward end, an angular portion so formed as to be received in which my invention is illusin the slot 7 of the blade 1. The slottedportion of the handle 3 has a suitable hole 8 bored into it to receive and permit the necessary motion of the headed plunger or push button 9, said plunger having a head 10 to prevent its falling from the knife. As an alternative construction, the knife blade 1 may be positioned by means of the rib 4a, as shown in Fig. 5, and then retained in position by the retaining spring 5, as before.
In Fig. 4. the spring 5 and the plunger 9 are shown in the position they assume when the blade is locked in position. In Fig. 5 the spring 5 and plunger 9 are shown in the lifted position, as when a blade is to be inserted or withdrawn.
To detach a blade, the user simply grasps the handle in one hand and'presses on the push button 9 with the thumb to movethe latch portion 6 out of the notch '7 in the back of the blade, enabling the bladev to be readily withdrawn lengthwise from engagement with the handle.
It will be apparent that in the event the spring 5 breaks, it may be replaced without difficulty.
since it can be removed by simply withdrawing the shank portion 11 from the opening in the handle into which it fits snugly. V i I i In the embodiment shown I have provided a construction which will cause the blade to be posibutton having'a portion engageable for operation tively locked-in position and yet be readily removable. It will be seen that that the construction described enables the blades to be changed easily and quickly without danger of injury to the user. It is also apparent that while I have shown and described a surgical knife, this invention may be'used with any knife or device wherein it is necessary to use interchangeable blades.
It will be apparent to those skilled in the art that various modifications thereof may be appar- 7 ent to those skilled in the art without departing from the spirit and scope of this invention and, therefore, the same is to be limited only by the scope of the prior art andthe appended claims.
I claim:
1. A knife construction comprising a handle, a blade having a longitudinally extending openended slot in its securing portion, said handle having positioning means which enter the slot in assembly, and means for detachably securing said blade to said handle comprising a cantilever leaf spring member mounted on the handle and extending along the back thereof and having a latch portion adjacent its free end'for engaging an edge of the securing portion and a push button extending transversely through the handle and engaging a portion of the leaf spring intermediate its secured end and its free end, for moving the spring to releasing position, said push on the side of the handle opposite that along which the leaf spring extends.
2.. A knife construction comprising a handle, a blade having a longitudinally extending openendedslot in its securing portion, said handle having positioning means which enter the slot in assembly, and means for detachably securing said blade to said'handle comprising a cantilever leaf spring member mounted on the handle and ex tending along the back thereof and having a latch 10o portion adjacent its free end for engagingan edge of the securing portion and a push button extending transversely through the handle and engaging a portion of the leaf spring interme diateits secured end and its free end for mov- 05 ing the spring to releasing position, said push button having a portion engageable for operation on [the side of the handle opposite that along which the leaf spring extends, said leaf spring member having a shank portion extending into the handle and frictionally'held therein whereby the spring can be readily removed for repair and-replacement.
HU GO FRIEDMAN. V
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US546820A US1940855A (en) | 1931-06-25 | 1931-06-25 | Knife |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US546820A US1940855A (en) | 1931-06-25 | 1931-06-25 | Knife |
Publications (1)
Publication Number | Publication Date |
---|---|
US1940855A true US1940855A (en) | 1933-12-26 |
Family
ID=24182154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US546820A Expired - Lifetime US1940855A (en) | 1931-06-25 | 1931-06-25 | Knife |
Country Status (1)
Country | Link |
---|---|
US (1) | US1940855A (en) |
Cited By (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2507019A (en) * | 1946-12-06 | 1950-05-09 | Carl S Johnson | Knife with reversible blade |
US2530918A (en) * | 1946-08-03 | 1950-11-21 | Taylor Don | Hair shaper |
US2630029A (en) * | 1949-09-09 | 1953-03-03 | Imp Brass Mfg Co | Combination tube working tool and reamer |
US2695450A (en) * | 1950-03-13 | 1954-11-30 | Western States Cutlery And Mfg | Combination cutlery tool |
US2939213A (en) * | 1958-10-13 | 1960-06-07 | John M Daniel | Insertible blade scissors |
US2970569A (en) * | 1958-03-26 | 1961-02-07 | Erikan Elsa Heynau | Writing implements |
US3085332A (en) * | 1961-04-26 | 1963-04-16 | Philip Morris Inc | Handle for surgical blades, and the like |
US3262205A (en) * | 1964-01-21 | 1966-07-26 | Ruth B Arden | Scalpel |
US3300858A (en) * | 1965-03-30 | 1967-01-31 | Dominion Electric Corp | Blade-connecting means |
US3307259A (en) * | 1964-06-22 | 1967-03-07 | Scovill Manufacturing Co | Power operated knife |
US3317998A (en) * | 1965-09-20 | 1967-05-09 | John J Matwijcow | Interlocked blade and holder having resilient latching means |
US3412467A (en) * | 1966-11-25 | 1968-11-26 | John J. Matwijcow | Surgical scalpel |
US3683498A (en) * | 1969-11-18 | 1972-08-15 | Stanley Works | Cutting knife |
US3877147A (en) * | 1972-11-14 | 1975-04-15 | Acme United Corp | Disposable scalpel handle |
US3900950A (en) * | 1974-03-18 | 1975-08-26 | Walter W Collins | Knife with removable blade |
US4534348A (en) * | 1982-01-12 | 1985-08-13 | Moskovsky Nauchno-Issledovatelsky Institut Mirrokhirurgii Glaza | Instrument for making corneal incisions |
US4608757A (en) * | 1985-04-11 | 1986-09-02 | Eckerle Douglas W | Double ended throwing knife |
EP0289957A1 (en) * | 1987-04-30 | 1988-11-09 | Kai Cutlery Center Co., Ltd. | Cutter |
US4813141A (en) * | 1987-05-20 | 1989-03-21 | The Perfectrim Limited Partnership | Carpet seam cutter |
US5263972A (en) * | 1991-01-11 | 1993-11-23 | Stryker Corporation | Surgical handpiece chuck and blade |
US5468247A (en) * | 1993-05-26 | 1995-11-21 | Stryker Corporation | Saw blade for powered medical handpiece |
US5924206A (en) * | 1997-09-30 | 1999-07-20 | Becton, Dickinson And Company | Reusable device handle |
US6105260A (en) * | 1998-01-23 | 2000-08-22 | Alterra Holdings Corporation | Universal saw adapter |
US6113618A (en) * | 1999-01-13 | 2000-09-05 | Stryker Corporation | Surgical saw with spring-loaded, low-noise cutting blade |
WO2000061014A1 (en) * | 1999-04-09 | 2000-10-19 | Canica Design Inc. | Scalpel assembly |
US20040039397A1 (en) * | 2002-08-22 | 2004-02-26 | Helmut Weber | Medical tool |
US20070028454A1 (en) * | 2005-08-02 | 2007-02-08 | The Stanley Works | Compact utility knife |
US20070156160A1 (en) * | 2005-12-30 | 2007-07-05 | Petersen Thomas D | Handle with removable disposable surgical blade and blade removal system including disposal container |
US20090204137A1 (en) * | 2004-10-22 | 2009-08-13 | Maxwell Timothy J | Safety scalpel |
US7797836B2 (en) | 2005-08-02 | 2010-09-21 | The Stanley Works | Compact utility knife |
EP2292389A3 (en) * | 2006-10-16 | 2011-04-20 | Victorinox Ag | Pocket tool, in particular pocket knife |
US8201336B2 (en) | 2008-05-02 | 2012-06-19 | Olympia Tools International, Inc. | Retractable utility knife |
USD670551S1 (en) | 2011-03-01 | 2012-11-13 | Milwaukee Electric Tool Corporation | Utility knife |
US20120324738A1 (en) * | 2011-06-24 | 2012-12-27 | Hui-Tung Chu | Pocketknife with an assisted opening and closing mechanism |
US20130019481A1 (en) * | 2011-07-22 | 2013-01-24 | Chervon (Hk) Limited | Electric pruner |
USD686902S1 (en) | 2011-03-01 | 2013-07-30 | Milwaukee Electric Tool Corporation | Utility knife |
US8695221B2 (en) | 2008-08-21 | 2014-04-15 | Wen Hao | Utility knife with extended travel carriage |
USD769693S1 (en) | 2015-06-16 | 2016-10-25 | Milwaukee Electric Tool Corporation | Utility knife |
USD769692S1 (en) | 2015-06-16 | 2016-10-25 | Milwaukee Electric Tool Corporation | Utility knife |
US20170151682A1 (en) * | 2015-11-30 | 2017-06-01 | Kantas Products Co., Ltd. | Knife structure capable of safely replacing blade |
US20170266822A1 (en) * | 2016-03-15 | 2017-09-21 | Dominick Scalise | Knife and Method |
US10144139B2 (en) | 2015-04-02 | 2018-12-04 | Milwaukee Electric Tool Corporation | Utility knife |
US11109871B2 (en) * | 2012-07-12 | 2021-09-07 | DePuy Synthes Products, Inc. | Saw, a saw blade, a connection mechanism and associated methods |
US11154380B2 (en) | 2017-10-26 | 2021-10-26 | King Abdulaziz University | Dental restoration scalpel |
US11305440B2 (en) | 2019-12-31 | 2022-04-19 | Good Sportsman Marketing, Llc | Knife with interchangeable blade |
US11338456B2 (en) * | 2019-02-28 | 2022-05-24 | Belair Instrument Company, Llc | TrimSafe histology radius blade grossing knife |
US20230001591A1 (en) * | 2021-07-01 | 2023-01-05 | Mike H. Okamura | Knife with replaceable blade |
US11642801B1 (en) * | 2022-07-01 | 2023-05-09 | Darex, Llc | Utility blades and combination blade holders |
WO2024006740A1 (en) * | 2022-07-01 | 2024-01-04 | Darex, Llc | Utility blades and combination blade holders |
-
1931
- 1931-06-25 US US546820A patent/US1940855A/en not_active Expired - Lifetime
Cited By (74)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2530918A (en) * | 1946-08-03 | 1950-11-21 | Taylor Don | Hair shaper |
US2507019A (en) * | 1946-12-06 | 1950-05-09 | Carl S Johnson | Knife with reversible blade |
US2630029A (en) * | 1949-09-09 | 1953-03-03 | Imp Brass Mfg Co | Combination tube working tool and reamer |
US2695450A (en) * | 1950-03-13 | 1954-11-30 | Western States Cutlery And Mfg | Combination cutlery tool |
US2970569A (en) * | 1958-03-26 | 1961-02-07 | Erikan Elsa Heynau | Writing implements |
US2939213A (en) * | 1958-10-13 | 1960-06-07 | John M Daniel | Insertible blade scissors |
US3085332A (en) * | 1961-04-26 | 1963-04-16 | Philip Morris Inc | Handle for surgical blades, and the like |
US3262205A (en) * | 1964-01-21 | 1966-07-26 | Ruth B Arden | Scalpel |
US3307259A (en) * | 1964-06-22 | 1967-03-07 | Scovill Manufacturing Co | Power operated knife |
US3300858A (en) * | 1965-03-30 | 1967-01-31 | Dominion Electric Corp | Blade-connecting means |
US3317998A (en) * | 1965-09-20 | 1967-05-09 | John J Matwijcow | Interlocked blade and holder having resilient latching means |
US3412467A (en) * | 1966-11-25 | 1968-11-26 | John J. Matwijcow | Surgical scalpel |
US3683498A (en) * | 1969-11-18 | 1972-08-15 | Stanley Works | Cutting knife |
US3877147A (en) * | 1972-11-14 | 1975-04-15 | Acme United Corp | Disposable scalpel handle |
US3900950A (en) * | 1974-03-18 | 1975-08-26 | Walter W Collins | Knife with removable blade |
US4534348A (en) * | 1982-01-12 | 1985-08-13 | Moskovsky Nauchno-Issledovatelsky Institut Mirrokhirurgii Glaza | Instrument for making corneal incisions |
US4608757A (en) * | 1985-04-11 | 1986-09-02 | Eckerle Douglas W | Double ended throwing knife |
EP0289957A1 (en) * | 1987-04-30 | 1988-11-09 | Kai Cutlery Center Co., Ltd. | Cutter |
US4922614A (en) * | 1987-04-30 | 1990-05-08 | Kai Cutlery Center Co., Ltd. | Cutter |
US4813141A (en) * | 1987-05-20 | 1989-03-21 | The Perfectrim Limited Partnership | Carpet seam cutter |
US5263972A (en) * | 1991-01-11 | 1993-11-23 | Stryker Corporation | Surgical handpiece chuck and blade |
US5439472A (en) * | 1991-01-11 | 1995-08-08 | Stryker Corporation | Surgical handpiece chuck and blade |
US5468247A (en) * | 1993-05-26 | 1995-11-21 | Stryker Corporation | Saw blade for powered medical handpiece |
US5702415A (en) * | 1993-05-26 | 1997-12-30 | Stryker Corporation | Chuck and blade for powered medical handpiece |
US5924206A (en) * | 1997-09-30 | 1999-07-20 | Becton, Dickinson And Company | Reusable device handle |
US6105260A (en) * | 1998-01-23 | 2000-08-22 | Alterra Holdings Corporation | Universal saw adapter |
US6508003B1 (en) | 1998-01-23 | 2003-01-21 | Alterra Holdings Corporation | Universal saw adapter |
US6113618A (en) * | 1999-01-13 | 2000-09-05 | Stryker Corporation | Surgical saw with spring-loaded, low-noise cutting blade |
WO2000061014A1 (en) * | 1999-04-09 | 2000-10-19 | Canica Design Inc. | Scalpel assembly |
US7748124B1 (en) * | 1999-04-09 | 2010-07-06 | Canica Design, Inc. | Scalpel assembly |
US20040039397A1 (en) * | 2002-08-22 | 2004-02-26 | Helmut Weber | Medical tool |
FR2843693A1 (en) * | 2002-08-22 | 2004-02-27 | Helmut Weber | Vetrebral distractor for surgery, has valve in area of free axial ends of pliers unit and releasably connected by securing mechanism of type, where push button of type is provided on mechanism, via which connection can be released |
US7081118B2 (en) | 2002-08-22 | 2006-07-25 | Helmut Weber | Medical tool |
US20090204137A1 (en) * | 2004-10-22 | 2009-08-13 | Maxwell Timothy J | Safety scalpel |
US8819943B2 (en) | 2004-10-22 | 2014-09-02 | Canica Design Inc. | Safety scalpel |
US7520059B2 (en) | 2005-08-02 | 2009-04-21 | The Stanley Works | Compact utility knife |
US20070028454A1 (en) * | 2005-08-02 | 2007-02-08 | The Stanley Works | Compact utility knife |
US7797836B2 (en) | 2005-08-02 | 2010-09-21 | The Stanley Works | Compact utility knife |
US7930829B2 (en) | 2005-08-02 | 2011-04-26 | Stanley Black & Decker, Inc. | Compact utility knife |
US8549755B2 (en) | 2005-08-02 | 2013-10-08 | Stanley Black & Decker, Inc. | Compact utility knife |
US20070156160A1 (en) * | 2005-12-30 | 2007-07-05 | Petersen Thomas D | Handle with removable disposable surgical blade and blade removal system including disposal container |
US7647704B2 (en) * | 2005-12-30 | 2010-01-19 | Petersen Thomas D | Handle with removable disposable surgical blade |
EP2292389A3 (en) * | 2006-10-16 | 2011-04-20 | Victorinox Ag | Pocket tool, in particular pocket knife |
US9517569B2 (en) | 2006-10-16 | 2016-12-13 | Victorinox Ag | Pocket tool, in particular a pocket knife |
US8201336B2 (en) | 2008-05-02 | 2012-06-19 | Olympia Tools International, Inc. | Retractable utility knife |
US8984755B2 (en) | 2008-05-02 | 2015-03-24 | Olympia Tools International, Inc. | Retractable utility knife |
US8695221B2 (en) | 2008-08-21 | 2014-04-15 | Wen Hao | Utility knife with extended travel carriage |
USD670551S1 (en) | 2011-03-01 | 2012-11-13 | Milwaukee Electric Tool Corporation | Utility knife |
USD686902S1 (en) | 2011-03-01 | 2013-07-30 | Milwaukee Electric Tool Corporation | Utility knife |
USD686901S1 (en) | 2011-03-01 | 2013-07-30 | Milwaukee Electric Tool Corporation | Utility knife |
USD848234S1 (en) | 2011-03-01 | 2019-05-14 | Milwaukee Electric Tool Corporation | Utility knife |
USD810539S1 (en) | 2011-03-01 | 2018-02-20 | Milwaukee Electric Tool Corporation | Utility knife |
US20120324738A1 (en) * | 2011-06-24 | 2012-12-27 | Hui-Tung Chu | Pocketknife with an assisted opening and closing mechanism |
US8584367B2 (en) * | 2011-06-24 | 2013-11-19 | Hui-Tung Chu | Pocketknife with an assisted opening and closing mechanism |
US20130019481A1 (en) * | 2011-07-22 | 2013-01-24 | Chervon (Hk) Limited | Electric pruner |
US11109871B2 (en) * | 2012-07-12 | 2021-09-07 | DePuy Synthes Products, Inc. | Saw, a saw blade, a connection mechanism and associated methods |
US10144139B2 (en) | 2015-04-02 | 2018-12-04 | Milwaukee Electric Tool Corporation | Utility knife |
US11724408B2 (en) | 2015-04-02 | 2023-08-15 | Milwaukee Electric Tool Corporation | Utility knife |
USD769692S1 (en) | 2015-06-16 | 2016-10-25 | Milwaukee Electric Tool Corporation | Utility knife |
USD769693S1 (en) | 2015-06-16 | 2016-10-25 | Milwaukee Electric Tool Corporation | Utility knife |
US20170151682A1 (en) * | 2015-11-30 | 2017-06-01 | Kantas Products Co., Ltd. | Knife structure capable of safely replacing blade |
US20170266822A1 (en) * | 2016-03-15 | 2017-09-21 | Dominick Scalise | Knife and Method |
US10464223B2 (en) * | 2016-03-15 | 2019-11-05 | Dominick Scalise | Knife and method |
US11219504B1 (en) | 2017-10-26 | 2022-01-11 | King Abdulaziz University | Dental cosmetic scalpel |
US11219503B2 (en) | 2017-10-26 | 2022-01-11 | King Abdulaziz University | Method for contouring a dental restoration |
US11154380B2 (en) | 2017-10-26 | 2021-10-26 | King Abdulaziz University | Dental restoration scalpel |
US11338456B2 (en) * | 2019-02-28 | 2022-05-24 | Belair Instrument Company, Llc | TrimSafe histology radius blade grossing knife |
US20220281126A1 (en) * | 2019-02-28 | 2022-09-08 | Belair Instrument Company, Llc | Trimsafe histology radius blade grossing knife |
US11738473B2 (en) * | 2019-02-28 | 2023-08-29 | Belair Instrument Company, Llc | Trimsafe histology radius blade grossing knife |
US11305440B2 (en) | 2019-12-31 | 2022-04-19 | Good Sportsman Marketing, Llc | Knife with interchangeable blade |
US20230001591A1 (en) * | 2021-07-01 | 2023-01-05 | Mike H. Okamura | Knife with replaceable blade |
US11642801B1 (en) * | 2022-07-01 | 2023-05-09 | Darex, Llc | Utility blades and combination blade holders |
AU2023203631B1 (en) * | 2022-07-01 | 2023-08-03 | Darex, Llc | Utility blades and combination blade holders |
WO2024006740A1 (en) * | 2022-07-01 | 2024-01-04 | Darex, Llc | Utility blades and combination blade holders |
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