EP0395338A1 - Couteau à lame cassable - Google Patents

Couteau à lame cassable Download PDF

Info

Publication number
EP0395338A1
EP0395338A1 EP19900304343 EP90304343A EP0395338A1 EP 0395338 A1 EP0395338 A1 EP 0395338A1 EP 19900304343 EP19900304343 EP 19900304343 EP 90304343 A EP90304343 A EP 90304343A EP 0395338 A1 EP0395338 A1 EP 0395338A1
Authority
EP
European Patent Office
Prior art keywords
blade
handle
knife
recess
snap
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.)
Withdrawn
Application number
EP19900304343
Other languages
German (de)
English (en)
Inventor
Richard Gilbert
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.)
Stanley Works Ltd
Original Assignee
Stanley Works Ltd
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 Stanley Works Ltd filed Critical Stanley Works Ltd
Publication of EP0395338A1 publication Critical patent/EP0395338A1/fr
Withdrawn legal-status Critical Current

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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
    • B26B5/002—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use segmented blades

Definitions

  • This invention relates to a snap-off blade knife.
  • a known snap-off blade knife comprises a handle made in at least two parts which assemble together for normal use of the knife, a first said part carrying a snap-off blade and a slider connected to the blade for protruding the blade from one end of said first part, said end forming a front end of the handle, one surface only of the blade having break-lines which are obtusely-angled relative to the cutting edge of the blade, a second said part being detachable from the first said part and being adapted for use in snapping-off a used blade-end portion, the second said part being formed with a slot to receive the used blade-end portion protruding from the front end of the handle.
  • the blade-end portion must be bent downwardly if that surface is uppermost or, conversely, must be bent upwardly if that surface is lowermost, since otherwise the blade will fracture uncontrollably and with possibly dangerous results.
  • the invention provides a snap-off blade knife as claimed in each of the claims, to which reference is directed.
  • a first embodiment of the invention in the form of a snap-off blade knife 10 which comprises a handle 12 made in two parts 14, 16 which assemble together for normal use of the knife 10.
  • the first said part 12 carries a conventional snap-off blade 18 and a conventional slider 20 connected to the blade 18 for protruding the blade 18 from one end 22 of said first part 12. This end 22 forms a front end of the handle 12.
  • one surface 24 only (that is, not the opposite surface) of the blade 18 has break-lines 26 which are obtusely-angled relative to the cutting edge of the blade 18. This surface 24 faces the slider 20.
  • the second part 16 of handle 12 is detachable from the first said part 14 and is adapted for use in snapping-off a used blade-end portion 28. More particularly, the second said part 16 is formed with a recess 30 at the rear end 32 of handle 12, and is also formed with a slot 34 within the recess 32 to receive the used blade-end portion 28 protruding from the front end 22 of the handle 12.
  • the blade-end portion 28 must be bent downwardly if that surface 24 is uppermost or, conversely, must be bent upwardly if that surface 24 is lowermost, since otherwise the blade 18 will fracture uncontrollably and with possibly dangerous results.
  • the slot 34 is shaped to receive the used blade-end portion 28 properly one way round but not the opposite way round, whilst the recess 30 is shaped to allow relative deflection of said first and second parts 14, 16 of the handle 12, for snapping-off the used blade-end portion 28, in one direction, corresponding to the blade surface 24 having the break-lines 26, but not the opposite direction.
  • the slot 34 has a bottom edge 36 which is angled the same way as the break-lines 26. Also, the recess 30 has a bottom surface 38 at the same angle, to engage a similarly angled surface 40 at the front end 22 of handle part 14.
  • the recess 30 has two surfaces 42, 44 which are at different angles as shown clearly in Figs. 3 and 5.
  • the recess surface 42 abuts a surface 46 (Fig. 3) on the corresponding side of the handle end 22 - namely, the side of the slider 20, as shown in Fig. 5 - and inhibits or discourages relative bending of the handle parts 14,16 in that direction.
  • the recess surface 44 is spaced from the corresponding surface 48 of the handle end 22 (on the far side from the slider 20) and permits relative bending of the handle parts 14, 16 in that direction, indicated by arrows 50, 52 in Fig. 5.
  • Fig. 6 shows how handle part 14 (the same as in Figs. 1 to 5) conventionally engages handle part 16A.
  • Handle part 14 has two walls 54, 56 which are formed with conventional detent teeth 58, 60 on their respective inside surfaces, to conventionally engage the slider 20. Cutouts 62, 64 slidingly accommodate walls 66, 68 of handle part 16A. Walls 66, 68 are overhung or undercut to receive flanges 70, 72 of handle part 14, as shown in Fig. 6. (Handle parts 14, 16 of the first embodiment of Figs. 1 to 5 are assembled in the same way, not shown. )

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
EP19900304343 1989-04-25 1990-04-23 Couteau à lame cassable Withdrawn EP0395338A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8909424A GB2230996B (en) 1989-04-25 1989-04-25 A snap-off blade knife
GB8909424 1989-04-25

Publications (1)

Publication Number Publication Date
EP0395338A1 true EP0395338A1 (fr) 1990-10-31

Family

ID=10655682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900304343 Withdrawn EP0395338A1 (fr) 1989-04-25 1990-04-23 Couteau à lame cassable

Country Status (2)

Country Link
EP (1) EP0395338A1 (fr)
GB (1) GB2230996B (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999052690A1 (fr) * 1998-04-09 1999-10-21 Mary Kay Allen Ensemble etui a lame
GB2349841A (en) * 1999-04-23 2000-11-15 Moving Edge Ltd Cutting tool
US6364182B1 (en) 1998-04-09 2002-04-02 Mary Kay Hansen Holster assembly with disposable blade well
WO2009097501A1 (fr) * 2008-01-30 2009-08-06 American Safety Razor Company Couteau escamotable par bouton-pression
USD602325S1 (en) 2008-01-31 2009-10-20 American Safety Razor Snap-off knife
US7966732B2 (en) 2002-11-19 2011-06-28 Spellbound Development Group, Inc. Safety cutting apparatus
EP2481533A1 (fr) * 2011-01-31 2012-08-01 Olfa Corporation Support de pale amovible
CN104191435A (zh) * 2014-08-20 2014-12-10 张家港市天华五金工具有限公司 美工刀
WO2017188984A1 (fr) * 2016-04-29 2017-11-02 JR. Harry S. BILLADO Couteau universel comprenant un guide lame pour séparer des segments de lame détachables d'une lame tout usage à points multiples

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0449053U (fr) * 1990-08-29 1992-04-24
CN104014575A (zh) * 2014-02-27 2014-09-03 昆山洛博格机械技术咨询有限公司 刀片折断收集器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240202A (en) * 1977-09-08 1980-12-23 Stanley Tools Limited Replaceable blade knife
DE8801417U1 (de) * 1988-02-05 1988-04-21 Schneider, Helmut, 7521 Hambrücken Mehrfachschneidwerkzeug
GB2206832A (en) * 1987-07-15 1989-01-18 Nippon Tenshashi Kk A knife

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240202A (en) * 1977-09-08 1980-12-23 Stanley Tools Limited Replaceable blade knife
GB2206832A (en) * 1987-07-15 1989-01-18 Nippon Tenshashi Kk A knife
DE8801417U1 (de) * 1988-02-05 1988-04-21 Schneider, Helmut, 7521 Hambrücken Mehrfachschneidwerkzeug

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6105838A (en) * 1998-04-09 2000-08-22 Hansen; Mary Kay Holster and blade well
US6364182B1 (en) 1998-04-09 2002-04-02 Mary Kay Hansen Holster assembly with disposable blade well
WO1999052690A1 (fr) * 1998-04-09 1999-10-21 Mary Kay Allen Ensemble etui a lame
GB2349841A (en) * 1999-04-23 2000-11-15 Moving Edge Ltd Cutting tool
GB2349841B (en) * 1999-04-23 2003-08-27 Moving Edge Ltd Cutting tool
US6718640B1 (en) 1999-04-23 2004-04-13 Moving Edge Limited Cutting tool
US7966732B2 (en) 2002-11-19 2011-06-28 Spellbound Development Group, Inc. Safety cutting apparatus
WO2009097501A1 (fr) * 2008-01-30 2009-08-06 American Safety Razor Company Couteau escamotable par bouton-pression
USD602325S1 (en) 2008-01-31 2009-10-20 American Safety Razor Snap-off knife
EP2481533A1 (fr) * 2011-01-31 2012-08-01 Olfa Corporation Support de pale amovible
CN104191435A (zh) * 2014-08-20 2014-12-10 张家港市天华五金工具有限公司 美工刀
WO2017188984A1 (fr) * 2016-04-29 2017-11-02 JR. Harry S. BILLADO Couteau universel comprenant un guide lame pour séparer des segments de lame détachables d'une lame tout usage à points multiples
US20190329430A1 (en) * 2016-04-29 2019-10-31 Harry S. Billado, JR. Utility Knife with Blade Guide to Separate Detachable Blade Segments From a Multi-Point Utility Blade

Also Published As

Publication number Publication date
GB2230996B (en) 1993-02-17
GB2230996A (en) 1990-11-07
GB8909424D0 (en) 1989-06-14

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

16A New documents despatched to applicant after publication of the search report
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Effective date: 19910429

17Q First examination report despatched

Effective date: 19930525

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19931101