US3879847A - Cutter with forwardly and rearwardly displaceable blade - Google Patents
Cutter with forwardly and rearwardly displaceable blade Download PDFInfo
- Publication number
- US3879847A US3879847A US466456A US46645674A US3879847A US 3879847 A US3879847 A US 3879847A US 466456 A US466456 A US 466456A US 46645674 A US46645674 A US 46645674A US 3879847 A US3879847 A US 3879847A
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- US
- United States
- Prior art keywords
- blade
- cutter
- cutter handle
- slide
- grooves
- 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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B5/00—Hand knives with one or more detachable blades
- B26B5/001—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use
Definitions
- ABSTRACT A cutter with a forwardly and rearwardly displaceable blade which is supported in a blade slide movable from the outside and guided in the handle of the cutter and which blade slide can be selectively arrested in different locking positions.
- the blade slide which is of substantially trough-shape configuration and receives the blade between two side edges or walls, is guided by its side edges in grooves at the cutter handle. These grooves extend up to the end of the cutter handle.
- the part of the blade slide receiving the blade is outwardly movable to a location in front of the cutter handle end for the purpose of changing the blade.
- the present invention relates to a new and improved construction of cutter or knife implement with a blade which can be forwardly or rearwardly displaced, the blade is supported in a blade slide movable from the outside and guided in the cutter handle or grip, and the blade slide can be selectively arrested or locked in different locking positions.
- Cutters or knife implements of this type are used by people, for instance, in handcrafts for the most different work, and therefore there are available on the market blades with very different shapes of the cutting edge, which can possess a linear, curved or even serrated construction.
- the blades of such cutters must be easily exchangeable. During non-use of the cutter, the blade must be completely retractable into the cutter handle or grip in order to eliminate any possibility of injury.
- the cutter handle composed of two halves must be threadably disconnected for the purpose of replacing the blade, requiring a great deal of time and further requiring the constant availability of a screwdriver or other suitable tool. This circumstance can therefore impede a rational and economical use of such cutter.
- Another object of the invention aims at the provision of a new and improved construction of cutter by means of which it is possible to also use blades or knives of different width, so that there is not required the necessity of procuring a new set of cutters if there are to be used for special work blades having different widths.
- the cutter of the previously mentioned type is manifested by the features that the blade slide, which is substantially trough-shaped, and receiving the blade between two side edges or walls thereof, is guided by means of such side edges in grooves provided at the cutter handle. These grooves extend up to an end of the cutter handle.
- the part or portion of the blade slide which houses the blade can be outwardly extended up to a location in front of the cutter handle end for the purpose of exchanging the blade.
- the blade slide is exchangeable for the purpose of being able to use blades of different width, and at the cutter handle there are provided pairs of grooves with different mutual spacing of the grooves of each groove pair for guiding the side edges of different width blade slides.
- FIG. 1 is a side view of a cutter designed according to the invention with the blade slide pushed out or extended for purposes of exchanging the blade;
- FIG. 2 illustrates the cutter in its position of use wherein the blade slide is retracted into the cutter handle or grip
- FIG. 3 is a view of the front end of the cutter handle or grip.
- FIGS. l-3 the cutter or knife implement depicted in FIGS. l-3 will be understood to comprise a cutter handle or grip 1 composed of two handle halves or handle portions la and lb (FIG. 3) detachably assembled together by means of screws 2 and 3 or equivalent fastening expedients.
- a guide slot 4 extends along the central lengthwise extending portion of the cutter handle 1.
- the guide slot 4 is widened at its lengthwise extending edges in that at such lengthwise extending edges there are formed grooves 5 at the cutter handle portion la of the cutter handle 1, as best seen by referring to FIG. 3.
- the parting or separation plane 6 between both of the cutter handle halves or portions la and lb of the cutter handle 1 extends through the guide slot 4 and is flush with its lower surface.
- a blade or knife slide 7 which, as best seen by referring to FIG. 1, possesses a substantially trough-shaped construction through the provision of two side edges or walls 8 and 9, in order to thus receive the blade or knife 10 between such side edges. Both of the side edges 8 and 9 are guided in the grooves 5 of the cutter handle 1. These grooves, according to the showing of FIG. I, extend up to the front end of the cutter handle, so that the blade slide 7, even in the position where it is forwardly extended or ejected for the purpose of exchanging the blade, is at least guided by means of the one side edge or wall 8 in the associated groove 5.
- the rear portion or part 11 of the blade slide 7 forms a narrower tongue member which is resilient and upwardly flexed or bent at its end, as indicated by reference character 12, extending by means of such flexed portion 12 forwardly through a slot 13 provided at the cutter handle portion 1a and at that location is again flexed into a key or actuation tab 14.
- the blade slide 7 can be forwardly and rearwardly shifted within the cutter handle I and locked or engaged at different positions, wherein not further illustrated projections at the part 11 of the blade slide releasably engage with recesses 15 at the cutter handle 1.
- the blade slide 7 illustrated in the drawing must be exchangeable for a narrower blade slide which has not been particularly shown, but is similar in construction to the illustrated blade slide.
- the cutter handle portion la there are provided at the cutter handle portion la two further grooves 20 possessing a smaller mutual spacing from one another and intended to guide a narrower blade slide.
- a cutter apparatus comprising a cutter handle, a blade slide movably arranged in the cutter handle, means for initiating movement of the blade slide from externally of the cutter handle, a forwardly and rearwardly retractable blade supported at the blade slide, said blade slide possessing a substantially troughshaped configuration including two side edges for reciving the blade therebetween, said cutter handle being equipped with grooves extending up to an end of the cutter handle from which protrudes the blade, said blade slide being guided with said side edges in said grooves of the cutter handle, said blade slide having a portion receiving the blade, said blade receiving portion of the blade slide being movable outwardly up to a location in front of said end of the cutter handle for the purpose of exchanging the blade, said blade slide being exchangeable for the purpose of being able to use different width blades, said cutter handle being provided with pairs of grooves of different mutual spacing from one another, the grooves of each pair guiding the side edges of blade slides of different width from one another.
Abstract
A cutter with a forwardly and rearwardly displaceable blade which is supported in a blade slide movable from the outside and guided in the handle of the cutter and which blade slide can be selectively arrested in different locking positions. The blade slide which is of substantially trough-shape configuration and receives the blade between two side edges or walls, is guided by its side edges in grooves at the cutter handle. These grooves extend up to the end of the cutter handle. The part of the blade slide receiving the blade is outwardly movable to a location in front of the cutter handle end for the purpose of changing the blade.
Description
United States Patent [1 1 Roll [451 Apr. 29, 1975 CUTTER WITH FORWARDLY AND REARWARDLY DISPLACEABLE BLADE [75] Inventor: Dieter Roll, Sedrun, Grisian,
211 App]. No.2 466,456
[30] Foreign Application Priority Data May 11. 1973 Switzerland 6715/73 [56] References Cited UNITED STATES PATENTS H1938 Laverty 30/162 9/1951 Trimble et al. 30/162 X 3,063,147 11/1962 Paparelli 30/320 X 3,171,201 3/1965 Carifi 3,577,637 5/1971 Braginetz..
3.708.881 1/1973 Bennett 30/335 Primary E.\'aminerAl Lawrence Smith Assistant E.raminer.l. T. Zatarga Attorney, Agent, or FirmWerner W. Kleeman [57] ABSTRACT A cutter with a forwardly and rearwardly displaceable blade which is supported in a blade slide movable from the outside and guided in the handle of the cutter and which blade slide can be selectively arrested in different locking positions. The blade slide which is of substantially trough-shape configuration and receives the blade between two side edges or walls, is guided by its side edges in grooves at the cutter handle. These grooves extend up to the end of the cutter handle. The part of the blade slide receiving the blade is outwardly movable to a location in front of the cutter handle end for the purpose of changing the blade.
1 Claim, 3 Drawing Figures CUTTER WITH FORWARDLY AND REARWARDLY DISPLACEABLE BLADE BACKGROUND OF THE INVENTION The present invention relates to a new and improved construction of cutter or knife implement with a blade which can be forwardly or rearwardly displaced, the blade is supported in a blade slide movable from the outside and guided in the cutter handle or grip, and the blade slide can be selectively arrested or locked in different locking positions.
Cutters or knife implements of this type are used by people, for instance, in handcrafts for the most different work, and therefore there are available on the market blades with very different shapes of the cutting edge, which can possess a linear, curved or even serrated construction. In order to be able to replace a blade for a differently shaped blade or a dull blade for a new one, the blades of such cutters must be easily exchangeable. During non-use of the cutter, the blade must be completely retractable into the cutter handle or grip in order to eliminate any possibility of injury.
According to a known construction of cutter of this type, the cutter handle composed of two halves must be threadably disconnected for the purpose of replacing the blade, requiring a great deal of time and further requiring the constant availability of a screwdriver or other suitable tool. This circumstance can therefore impede a rational and economical use of such cutter.
SUMMARY OF THE INVENTION Hence, it is a primary object of the present invention to provide an improved cutter rendering possible a rapid removal or exchange of the blade without having to dismantle the cutter handle.
Another object of the invention aims at the provision of a new and improved construction of cutter by means of which it is possible to also use blades or knives of different width, so that there is not required the necessity of procuring a new set of cutters if there are to be used for special work blades having different widths.
Now in order to implement these and still further objects of the invention, which will become more readily apparent as the description proceeds, the cutter of the previously mentioned type, as contemplated by the invention, is manifested by the features that the blade slide, which is substantially trough-shaped, and receiving the blade between two side edges or walls thereof, is guided by means of such side edges in grooves provided at the cutter handle. These grooves extend up to an end of the cutter handle. The part or portion of the blade slide which houses the blade can be outwardly extended up to a location in front of the cutter handle end for the purpose of exchanging the blade.
According to a preferred manifestation of the invention, the blade slide is exchangeable for the purpose of being able to use blades of different width, and at the cutter handle there are provided pairs of grooves with different mutual spacing of the grooves of each groove pair for guiding the side edges of different width blade slides.
BRIEF DESCRIPTION OF THE DRAWING The invention will be better understood and objects other than those set forth above, will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed drawing wherein:
FIG. 1 is a side view of a cutter designed according to the invention with the blade slide pushed out or extended for purposes of exchanging the blade;
FIG. 2 illustrates the cutter in its position of use wherein the blade slide is retracted into the cutter handle or grip; and
FIG. 3 is a view of the front end of the cutter handle or grip.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Describing now the drawing, the cutter or knife implement depicted in FIGS. l-3 will be understood to comprise a cutter handle or grip 1 composed of two handle halves or handle portions la and lb (FIG. 3) detachably assembled together by means of screws 2 and 3 or equivalent fastening expedients. Between both handle halves la and lb a guide slot 4 extends along the central lengthwise extending portion of the cutter handle 1. The guide slot 4 is widened at its lengthwise extending edges in that at such lengthwise extending edges there are formed grooves 5 at the cutter handle portion la of the cutter handle 1, as best seen by referring to FIG. 3. The parting or separation plane 6 between both of the cutter handle halves or portions la and lb of the cutter handle 1 extends through the guide slot 4 and is flush with its lower surface.
In the guide slot 4 there is displaceably guided for toand-fro movement a blade or knife slide 7 which, as best seen by referring to FIG. 1, possesses a substantially trough-shaped construction through the provision of two side edges or walls 8 and 9, in order to thus receive the blade or knife 10 between such side edges. Both of the side edges 8 and 9 are guided in the grooves 5 of the cutter handle 1. These grooves, according to the showing of FIG. I, extend up to the front end of the cutter handle, so that the blade slide 7, even in the position where it is forwardly extended or ejected for the purpose of exchanging the blade, is at least guided by means of the one side edge or wall 8 in the associated groove 5. The rear portion or part 11 of the blade slide 7 forms a narrower tongue member which is resilient and upwardly flexed or bent at its end, as indicated by reference character 12, extending by means of such flexed portion 12 forwardly through a slot 13 provided at the cutter handle portion 1a and at that location is again flexed into a key or actuation tab 14. With the aid of this key or tab 14 the blade slide 7 can be forwardly and rearwardly shifted within the cutter handle I and locked or engaged at different positions, wherein not further illustrated projections at the part 11 of the blade slide releasably engage with recesses 15 at the cutter handle 1.
In order to be able to use blades of different width with the same cutter, the blade slide 7 illustrated in the drawing must be exchangeable for a narrower blade slide which has not been particularly shown, but is similar in construction to the illustrated blade slide. For this purpose there are provided at the cutter handle portion la two further grooves 20 possessing a smaller mutual spacing from one another and intended to guide a narrower blade slide.
While there is shown and described present preferred embodiments of the invention, it is to be distinctly understood that the invention is not limited thereto, but may be otherwise variously embodied and practiced within the scope of the following claims. Accordingly,
What is claimed is:
1. A cutter apparatus comprising a cutter handle, a blade slide movably arranged in the cutter handle, means for initiating movement of the blade slide from externally of the cutter handle, a forwardly and rearwardly retractable blade supported at the blade slide, said blade slide possessing a substantially troughshaped configuration including two side edges for reciving the blade therebetween, said cutter handle being equipped with grooves extending up to an end of the cutter handle from which protrudes the blade, said blade slide being guided with said side edges in said grooves of the cutter handle, said blade slide having a portion receiving the blade, said blade receiving portion of the blade slide being movable outwardly up to a location in front of said end of the cutter handle for the purpose of exchanging the blade, said blade slide being exchangeable for the purpose of being able to use different width blades, said cutter handle being provided with pairs of grooves of different mutual spacing from one another, the grooves of each pair guiding the side edges of blade slides of different width from one another.
Claims (1)
1. A cutter apparatus comprising a cutter handle, a blade slide movably arranged in the cutter handle, means for initiating movement of the blade slide from externally of the cutter handle, a forwardly and rearwardly retractable blade supported at the blade slide, said blade slide possessing a substantially troughshaped configuration including two side edges for reciving the blade therebetween, said cutter handle being equipped with grooves extending up to an end of the cutter handle from which protrudes the blade, said blade slide being guided with said side edges in said grooves of the cutter handle, said blade slide having a portion receiving the blade, said blade receiving portion of the blade slide being movable outwardly up to a location in front of said end of the cutter handle for the purpose of exchanging the blade, said blade slide being exchangeable for the purpose of being able to use different width blades, said cutter handle being provided with pairs of grooves of different mutual spacing from one another, the grooves of each pair guiding the side edges of blade slides of different width from one another.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH671573A CH547686A (en) | 1973-05-11 | 1973-05-11 | KNIFE WITH FORWARD AND RETURN BLADE. |
Publications (1)
Publication Number | Publication Date |
---|---|
US3879847A true US3879847A (en) | 1975-04-29 |
Family
ID=4313908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US466456A Expired - Lifetime US3879847A (en) | 1973-05-11 | 1974-05-02 | Cutter with forwardly and rearwardly displaceable blade |
Country Status (5)
Country | Link |
---|---|
US (1) | US3879847A (en) |
CH (1) | CH547686A (en) |
DE (1) | DE2421174C3 (en) |
GB (1) | GB1449374A (en) |
NL (1) | NL7406298A (en) |
Cited By (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4005525A (en) * | 1975-08-29 | 1977-02-01 | Allway Tools Inc. | Retractable cutting implement |
US4012836A (en) * | 1975-05-30 | 1977-03-22 | Safe-T-Cut Incorporated | Carton knife |
US4089112A (en) * | 1976-09-30 | 1978-05-16 | Pacific Handy Cutter, Inc. | Adjustable blade knife |
US4209900A (en) * | 1978-01-25 | 1980-07-01 | Stanley Tools Limited | Retractable blade knife |
US4761882A (en) * | 1986-02-18 | 1988-08-09 | Hunt X-Acto, Inc. | Utility knife |
US4899443A (en) * | 1987-10-31 | 1990-02-13 | Martor-Argentax E.H. Beermann Kg | Safety knife for cardboard and like materials |
US5131149A (en) * | 1991-06-19 | 1992-07-21 | Lynn C. Thompson | Folding knife |
US5250064A (en) * | 1992-10-07 | 1993-10-05 | Biological Tissue Reserve, Inc. | Shield for surgical scalpel blades |
US5285574A (en) * | 1992-11-06 | 1994-02-15 | Cosco Industries, Inc. | Carton opener |
US5344424A (en) * | 1993-03-12 | 1994-09-06 | Roberts Philip L | Selectively retractable, disposable surgical knife |
US5386632A (en) * | 1993-01-12 | 1995-02-07 | Pacific Handy Cutter, Inc. | Ergonomic utility knife/box cutter and method of making |
US5475925A (en) * | 1994-03-21 | 1995-12-19 | Newman; Philip H. | Three-piece retractable-bladed knife |
US5649364A (en) * | 1995-01-25 | 1997-07-22 | Ilanlou; Jamshid | Disposable multi-blade straight razor |
US5779647A (en) * | 1995-06-07 | 1998-07-14 | Chau; Sonny | Automated biopsy instruments |
US5813121A (en) * | 1996-06-17 | 1998-09-29 | Allway Tools, Inc. | Automatically retractable utility knife |
USD430466S (en) * | 1999-10-11 | 2000-09-05 | Schmidt G Gerry | Utility knife blade guard |
US6192589B1 (en) | 1999-06-25 | 2001-02-27 | The Stanley Works | Utility knife |
USD444368S1 (en) | 1999-05-07 | 2001-07-03 | American Safety Razor | Retractable utility knife |
US6263577B1 (en) | 1998-10-06 | 2001-07-24 | American Safety Razor | Automatic spring retractable utility knife |
US6314646B1 (en) | 1999-12-15 | 2001-11-13 | Pacific Handy Cutter, Inc. | Utility knife |
US6374497B1 (en) * | 2001-07-09 | 2002-04-23 | Taiwan San Tyau Co., Ltd. | Utility cutter |
US6513246B2 (en) | 2000-11-14 | 2003-02-04 | Great Neck Saw Manufacturers, Inc. | Utility knife |
US6550144B1 (en) * | 1999-04-09 | 2003-04-22 | Harald Berns | Hollow-handle razor knife with blade slide |
US6589258B2 (en) * | 2000-05-10 | 2003-07-08 | Giuseppe Pilo | Disposable surgical safety scalpel |
US20030144678A1 (en) * | 1996-02-07 | 2003-07-31 | Hellenkamp Johann F. | Automatic surgical device and control assembly for cutting a cornea |
US6605099B1 (en) | 1996-02-07 | 2003-08-12 | Johann F. Hellenkamp | Automatic surgical device and control assembly for cutting a cornea |
US20040139614A1 (en) * | 2003-01-17 | 2004-07-22 | Tebo Glenn J. | Utility knife |
US20040236358A1 (en) * | 2003-04-07 | 2004-11-25 | Barrile-Josephson Craig A. | Bar-link drive system for a microkeratome |
US20050188541A1 (en) * | 2003-11-10 | 2005-09-01 | Brown Donald A. | Utility knife with actuator for moving blade carrier and for releasing blade therefrom, and related method |
US20060253996A1 (en) * | 2005-05-12 | 2006-11-16 | Rosalie Bianco | Hammer tacker with cutter |
US20070028455A1 (en) * | 2005-08-02 | 2007-02-08 | The Stanley Works | Compact utility knife |
US20070028454A1 (en) * | 2005-08-02 | 2007-02-08 | The Stanley Works | Compact utility knife |
US20070050988A1 (en) * | 2005-09-08 | 2007-03-08 | Helen Of Troy Limited | Utility knife |
US20070244496A1 (en) * | 1996-02-07 | 2007-10-18 | Hellenkamp Johann F | Automatic surgical device and control assembly for cutting a cornea |
US20080189956A1 (en) * | 2005-10-13 | 2008-08-14 | Gudula Polei | Knife |
US20100043235A1 (en) * | 2008-08-21 | 2010-02-25 | Wen Hao | Utility knife with extended travel carriage |
US20100223793A1 (en) * | 2009-03-04 | 2010-09-09 | The Stanley Works | Utility knife |
US20110167647A1 (en) * | 2010-01-11 | 2011-07-14 | Donald Gringer | Cutting implements |
USD660675S1 (en) | 2011-06-09 | 2012-05-29 | Allway Tools, Inc. | Twin blade head for a knife |
US8201336B2 (en) | 2008-05-02 | 2012-06-19 | Olympia Tools International, Inc. | Retractable utility knife |
US20130239415A1 (en) * | 2012-03-13 | 2013-09-19 | Milwaukee Electric Tool Corporation | Utility knife |
CN103464998A (en) * | 2013-09-17 | 2013-12-25 | 沈阳飞机工业(集团)有限公司 | Machining process of slotting tool |
US8776380B1 (en) * | 2011-04-25 | 2014-07-15 | Elwood Dean Quimby | Utility knife with retractable blade |
US20150246451A1 (en) * | 2014-02-11 | 2015-09-03 | Glenn Robinson | Sliding knife |
US20160023364A1 (en) * | 2014-07-23 | 2016-01-28 | Daniel J. Raymond | Utility knife with blade protector |
USD779143S1 (en) | 2014-04-25 | 2017-02-14 | Unger Marketing International, Llc | Window scraper |
USD782271S1 (en) | 2015-04-29 | 2017-03-28 | Unger Marketing International, Llc | Tool handle |
US10076846B2 (en) | 2014-08-15 | 2018-09-18 | Stanley Black & Decker, Inc. | Sliding blade utility knife |
IT201700055773A1 (en) * | 2017-05-23 | 2018-11-23 | Lorenzo Patrini | Cutter. |
US10575703B2 (en) | 2015-04-29 | 2020-03-03 | Unger Marketing International, Llc | Versatile cleaning devices |
US11104014B2 (en) | 2018-08-16 | 2021-08-31 | Stanley Black & Decker, Inc. | Sliding blade carriage with blade release |
Families Citing this family (4)
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DE8712318U1 (en) * | 1987-09-11 | 1989-01-12 | Klotz, Manfred, 4790 Paderborn, De | |
US5603162A (en) * | 1996-05-31 | 1997-02-18 | Chen; Chun C. | Utility knife combination |
DE19950903C2 (en) * | 1999-10-22 | 2001-11-08 | Walter Suitbert | Scraper knife for processing mouthpieces of reed and double reed instruments |
DE102010019119B8 (en) * | 2010-04-30 | 2013-01-31 | Wilfried Gorski | Cuttermesser |
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US2105663A (en) * | 1935-10-03 | 1938-01-18 | Ernest L Laverty | Blade haft |
US2569080A (en) * | 1949-02-24 | 1951-09-25 | Trimble Ernest | Knife using a detachable razor blade |
US3063147A (en) * | 1959-07-01 | 1962-11-13 | Kastar Inc | Adjustable tool |
US3171201A (en) * | 1963-09-03 | 1965-03-02 | Carifi Ralph | Razor blade holders |
US3577637A (en) * | 1968-09-24 | 1971-05-04 | Philip Morris Inc | Retractable blade knife |
US3708881A (en) * | 1971-03-22 | 1973-01-09 | R Bennett | Multi position adjustable roofing knife |
-
1973
- 1973-05-11 CH CH671573A patent/CH547686A/en not_active IP Right Cessation
-
1974
- 1974-05-02 DE DE2421174A patent/DE2421174C3/en not_active Expired
- 1974-05-02 US US466456A patent/US3879847A/en not_active Expired - Lifetime
- 1974-05-10 GB GB2081974A patent/GB1449374A/en not_active Expired
- 1974-05-10 NL NL7406298A patent/NL7406298A/xx not_active Application Discontinuation
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US2105663A (en) * | 1935-10-03 | 1938-01-18 | Ernest L Laverty | Blade haft |
US2569080A (en) * | 1949-02-24 | 1951-09-25 | Trimble Ernest | Knife using a detachable razor blade |
US3063147A (en) * | 1959-07-01 | 1962-11-13 | Kastar Inc | Adjustable tool |
US3171201A (en) * | 1963-09-03 | 1965-03-02 | Carifi Ralph | Razor blade holders |
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US3708881A (en) * | 1971-03-22 | 1973-01-09 | R Bennett | Multi position adjustable roofing knife |
Cited By (73)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4012836A (en) * | 1975-05-30 | 1977-03-22 | Safe-T-Cut Incorporated | Carton knife |
US4005525A (en) * | 1975-08-29 | 1977-02-01 | Allway Tools Inc. | Retractable cutting implement |
US4089112A (en) * | 1976-09-30 | 1978-05-16 | Pacific Handy Cutter, Inc. | Adjustable blade knife |
US4209900A (en) * | 1978-01-25 | 1980-07-01 | Stanley Tools Limited | Retractable blade knife |
US4761882A (en) * | 1986-02-18 | 1988-08-09 | Hunt X-Acto, Inc. | Utility knife |
US4899443A (en) * | 1987-10-31 | 1990-02-13 | Martor-Argentax E.H. Beermann Kg | Safety knife for cardboard and like materials |
US5131149A (en) * | 1991-06-19 | 1992-07-21 | Lynn C. Thompson | Folding knife |
US5250064A (en) * | 1992-10-07 | 1993-10-05 | Biological Tissue Reserve, Inc. | Shield for surgical scalpel blades |
US5285574A (en) * | 1992-11-06 | 1994-02-15 | Cosco Industries, Inc. | Carton opener |
US5386632A (en) * | 1993-01-12 | 1995-02-07 | Pacific Handy Cutter, Inc. | Ergonomic utility knife/box cutter and method of making |
US5613300A (en) * | 1993-01-12 | 1997-03-25 | Pacific Handy Cutter | Ergonomic utility knife/box cutter and method of making |
US5344424A (en) * | 1993-03-12 | 1994-09-06 | Roberts Philip L | Selectively retractable, disposable surgical knife |
US5475925A (en) * | 1994-03-21 | 1995-12-19 | Newman; Philip H. | Three-piece retractable-bladed knife |
US5649364A (en) * | 1995-01-25 | 1997-07-22 | Ilanlou; Jamshid | Disposable multi-blade straight razor |
US5779647A (en) * | 1995-06-07 | 1998-07-14 | Chau; Sonny | Automated biopsy instruments |
US6626850B1 (en) | 1995-06-07 | 2003-09-30 | Allegiance Corporation | Automated biopsy instruments |
US6605099B1 (en) | 1996-02-07 | 2003-08-12 | Johann F. Hellenkamp | Automatic surgical device and control assembly for cutting a cornea |
US20030144678A1 (en) * | 1996-02-07 | 2003-07-31 | Hellenkamp Johann F. | Automatic surgical device and control assembly for cutting a cornea |
US7166117B2 (en) | 1996-02-07 | 2007-01-23 | Hellenkamp Johann F | Automatic surgical device and control assembly for cutting a cornea |
US20070244496A1 (en) * | 1996-02-07 | 2007-10-18 | Hellenkamp Johann F | Automatic surgical device and control assembly for cutting a cornea |
US5813121A (en) * | 1996-06-17 | 1998-09-29 | Allway Tools, Inc. | Automatically retractable utility knife |
US6438849B1 (en) | 1998-10-06 | 2002-08-27 | Safety Razor Company | Automatic spring retractable utility knife |
US6263577B1 (en) | 1998-10-06 | 2001-07-24 | American Safety Razor | Automatic spring retractable utility knife |
US6550144B1 (en) * | 1999-04-09 | 2003-04-22 | Harald Berns | Hollow-handle razor knife with blade slide |
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Also Published As
Publication number | Publication date |
---|---|
DE2421174C3 (en) | 1978-09-21 |
DE2421174A1 (en) | 1974-11-28 |
DE2421174B2 (en) | 1978-01-26 |
NL7406298A (en) | 1974-11-13 |
GB1449374A (en) | 1976-09-15 |
CH547686A (en) | 1974-04-11 |
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