US3798766A - Folding pocket knife - Google Patents

Folding pocket knife Download PDF

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Publication number
US3798766A
US3798766A US00174837A US17483771A US3798766A US 3798766 A US3798766 A US 3798766A US 00174837 A US00174837 A US 00174837A US 17483771 A US17483771 A US 17483771A US 3798766 A US3798766 A US 3798766A
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US
United States
Prior art keywords
ferrule
blade
ring
apertures
slot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00174837A
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English (en)
Inventor
J Opinel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3798766A publication Critical patent/US3798766A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B26B1/00—Hand knives with adjustable blade; Pocket knives
    • B26B1/02—Hand knives with adjustable blade; Pocket knives with pivoted blade
    • B26B1/04—Hand knives with adjustable blade; Pocket knives with pivoted blade lockable in adjusted position

Definitions

  • a pocket knife has a split ferrule rotatably mounted [52] US. Cl. 30/161 on a split ring fixed to the knife handle. When these [51 Int. Cl B26b 1/04 splits are aligned, the blade can be clo n p n [58] Field of Search 30/159, 160, 1611; and the blade held in the open position by turning the 240/1066 ferrule. An inwardly projecting peg on the ferrule c0- operates with an aperture in the ring to limit rotation [56] References Cited of the ferrule and to axially urge the ferrule to lock UNITED STATES PATENTS the blade in the open position.
  • FIG. 3 l 5' FOLDING POCKET KNIFE BACKGROUND OF THE INVENTION
  • This invention relates to knives with folding blades, commonly known as pocket knives, and has particular reference to such knives when provided with a stopcatch for holding the blade in the open position.
  • a device of the prior art for retaining axially the rotatable ferrule comprises the use of the two protruding ends of the pivot axis of the blade, the rotatable ferrule having in a plane perpendicular to its axis a rib whose internal surface forms a groove in which the ends of the pivot axis of the blade are engaged.
  • Another solution of the prior art comprises the use of a rotatable ferrule pierced by two diametrically opposed transverse apertures in which the ends of the pivot axis of the blade are engaged.
  • An object of the present invention is to provide a knife with a folding blade comprising a device for retaining axially the rotatable ferrule which is not visible and causes no discontinuity in the outer surface of the said ferrule.
  • the knife according to the present invention is characterised in that the ring fixed to the handle contains at least one aperture in which is engaged at least one peg fixed to or integral with the rotatable ferrule and protruding inwardly from the inside face of the said rotatable ferrule.
  • FIG. 1 is a side view of a knife according to the invention in the open position
  • FIG. 2 is a cross-section along line Il ll of FIG. 1
  • FIGS. 3 and 4 are views of different embodiments of the invention.
  • the knife comprises a handle 1, preferably of wood, and a blade 2 pivoted about an axis 3 fixed to the handle 1.
  • the handle I contains a longitudinal slot 4 in which the blade 2 is housed when it is in the folded position.
  • the end of the handle 1 carrying the blade 2 is furnished with a fixed ring 5 about which is rotatably mounted a ferrule 6.
  • the rotatable ferrule 6 has a longitudinal slot 7.
  • FIGS. 1 and 2 illustrate a knife according to the invention with the blade clamped in the open position.
  • the ends of the pivot axis 3 of the blade 2 are flush with the outer surface of the fixed ring 5.
  • the fixed ring 5 is pierced by a transverse slot 8, and the rotatable ferrule 6 is furnished with a peg 10 protruding inwardly from the inside face of the ferrule 6, this peg engaging in the slot 8 of the fixed ring 5.
  • This peg 10 may either be fixed onto the ferrule, or formed in one piece with the ferrule by stamping or drawing or other suitable means.
  • This device enables the rotatable ferrule 6 to be retained axially on the fixed ring 5 while allowing the ferrule 6 to rotate freely about its axis through an angular distance defined by the length of the slot 8 in the ring 5.
  • FIG. 4 in another embodiment of a knife according to the invention, there are two diametrically opposed slots 8 in the fixed ring 5".
  • the rotating ferrule 6 is furnished with two diametrically opposed pegs 10'' projecting inwardly from the inside face of the ferrule 6" and each engaging in one of the slots of the fixed ring 5".
  • the end face 12 of the rotatable ferrule 6 is enable clamping of the heel of the blade in the open position no matter how much the ferrule is worn.
  • the fixed ring 5 has a slot 8' whose major axis is oblique to a plane perpendicular to the axis of rotation of the rotatable ferrule, hence causing, when the ferrule is turned, an axial movement of the latter enabling the maximum clamping effect to be exerted on the heel of the blade 2, no matter how much the ferrule is worn.
  • a knife comprising a handle having a housing therein, a blade pivotally mounted on the handle and pivotable about a transverse axis between an open position wherein said blade is in line with the handle and a closed position wherein said blade is nested in said housing, a split ring fixed on the handle at a location around said transverse axis, a ferrule rotatably disposed concentrically about said ring for rotation about its longitudinal axis, said ferrule having a longitudinal slot for allowing passage of the blade between the open and closed positions when the slot is aligned with both the blade and the split in said ring and a continuous external surface free of discontinuities except for said slot, and said ferrule also having an end bearing surface cooperating with said blade to hold the blade in the open position when the slot is out of alignment with the blade, and means retaining said ferrule concentrically about said ring and for limiting the angular displacement of said ferrule consisting solely of means defining a set of apertures in said ring and a set
  • each aperture in said set of apertures comprises means defining a slot having a major axis lying in a plane perpendicular to said longitudinal axis.
  • each aperture in said set of apertures comprises means defining a slot having a major axis lying in a plane generally oblique to said longitudinal axis and each protruding peg coacts with the corresponding aperture for controlling longitudinal movement of said ferrule in relation to said ring and said handle.
  • a knife according to claim 1 in which said set of apertures consists of two diametrically opposed apertures, and said set of pegs consists of two diametrically opposed inwardly protruding pegs cooperating with said apertures.
  • a knife according to claim 1 wherein said ferrule includes means defining an end bearing surface for holding said blade in said open position.
  • a knife comprising: a handle having a housing therein; a blade having a knife edge; means pivotally mounting said blade on one end portion of said handle for pivotal movement about a transverse axis between an open position wherein said blade projects from said handle and a closed position wherein said knife edge is nested in said housing; an elongated ring connected to said one end portion of said handle and having means therein defining a longitudinal slot disposed to permit the movement of said blade therethrough during movement between said open and closed positions; a ferrule movably disposed concentrically about said ring and having means therein defining a longitudinal slot and a continuous external surface free of discontinuities except for said slot; means retaining said ferrule concentrically about said ring and for limiting the angular displacement of said ferrule to either effect alignment of said longitudinal slot in said ferrule with said longitudinal slot in said ring to permit movement of said blade therethrough during movement between said open and closed positions or effect nonalignment of the two slots to prevent movement of said blade out of said open
  • each aperture in said set of apertures has its major axis lying in a plane generally oblique to the longitudinal axis of said longitudinal slot in said ring.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
US00174837A 1970-08-17 1971-08-12 Folding pocket knife Expired - Lifetime US3798766A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7030163A FR2102698A5 (enrdf_load_stackoverflow) 1970-08-17 1970-08-17

Publications (1)

Publication Number Publication Date
US3798766A true US3798766A (en) 1974-03-26

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ID=9060280

Family Applications (1)

Application Number Title Priority Date Filing Date
US00174837A Expired - Lifetime US3798766A (en) 1970-08-17 1971-08-12 Folding pocket knife

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US (1) US3798766A (enrdf_load_stackoverflow)
FR (1) FR2102698A5 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD323774S (en) 1989-09-27 1992-02-11 Etablissements Joseph Opinel & Cie. Folding knife
FR2855995A1 (fr) * 2003-06-13 2004-12-17 Devige Ets Couteau de poche
US20130025131A1 (en) * 2011-07-29 2013-01-31 Opinel Knife with sound emitting means using the flow of air
PT107632A (pt) * 2014-05-12 2015-11-12 José Francisco Marcos Dispositivo de bloqueio automático de lâmina para navalhas
US20160271810A1 (en) * 2015-03-21 2016-09-22 Jean-Robert Charles Macgregor Cassie Knife Whistle
USD1059992S1 (en) * 2022-07-27 2025-02-04 Opinel Sas Folding knife

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3033513B1 (fr) * 2015-03-10 2017-09-01 Opinel Couteau a lame articulee pourvu d’une virole de blocage amelioree

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1415887A (en) * 1921-12-31 1922-05-16 Mcwilliams James Alison Ice pick
US2078023A (en) * 1934-04-02 1937-04-20 George W Roosa Vehicle headlight
DE2050790A1 (enrdf_load_stackoverflow) * 1969-10-21 1971-06-16

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1415887A (en) * 1921-12-31 1922-05-16 Mcwilliams James Alison Ice pick
US2078023A (en) * 1934-04-02 1937-04-20 George W Roosa Vehicle headlight
DE2050790A1 (enrdf_load_stackoverflow) * 1969-10-21 1971-06-16

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD323774S (en) 1989-09-27 1992-02-11 Etablissements Joseph Opinel & Cie. Folding knife
FR2855995A1 (fr) * 2003-06-13 2004-12-17 Devige Ets Couteau de poche
US20130025131A1 (en) * 2011-07-29 2013-01-31 Opinel Knife with sound emitting means using the flow of air
US20160229069A1 (en) * 2011-07-29 2016-08-11 Opinel Knife with sound emitting means using the flow of air
PT107632A (pt) * 2014-05-12 2015-11-12 José Francisco Marcos Dispositivo de bloqueio automático de lâmina para navalhas
PT107632B (pt) * 2014-05-12 2016-07-01 Francisco Marcos José Dispositivo de bloqueio automático de lâmina para navalhas
US20160271810A1 (en) * 2015-03-21 2016-09-22 Jean-Robert Charles Macgregor Cassie Knife Whistle
USD1059992S1 (en) * 2022-07-27 2025-02-04 Opinel Sas Folding knife

Also Published As

Publication number Publication date
FR2102698A5 (enrdf_load_stackoverflow) 1972-04-07

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