GB2483244A - Folding pocket knife - Google Patents

Folding pocket knife Download PDF

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Publication number
GB2483244A
GB2483244A GB201014473A GB201014473A GB2483244A GB 2483244 A GB2483244 A GB 2483244A GB 201014473 A GB201014473 A GB 201014473A GB 201014473 A GB201014473 A GB 201014473A GB 2483244 A GB2483244 A GB 2483244A
Authority
GB
United Kingdom
Prior art keywords
blade
panel
assembly
knife
folded
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Withdrawn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
GB201014473A
Other versions
GB201014473D0 (en
Inventor
Iain Sinclair
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
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB201014473A priority Critical patent/GB2483244A/en
Publication of GB201014473D0 publication Critical patent/GB201014473D0/en
Publication of GB2483244A publication Critical patent/GB2483244A/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • B26B1/10—Handles

Abstract

A knife comprises a flat hinged panel to which a blade A is attached. The panel is folded to form a handle. The knife has matching bosses C and holes G that clip together to prevent the handle formed by the panel from coming undone. At least one lip may protrude over the blade when the knife is the closed position to prevent inadvertent opening. Preferably the blade is attached to the panel by ultrasonic welding. Also disclosed is a blade longer than 50mm and less than 1mm thickness.

Description

FOLDING POCKET KNIFE
FIELD OF INVENTION
This invention refers to a flat (planar), folding knife and method of manufacture thereof.
PRIOR ART
Many pocket knives or penknives are known which share a common form of construction where the blade is hinged at one end of it's handle and folds into that handle to enable the knife to be carried in the pocket and prevent accidental use of the blade when stored elsewhere.
The primary aim of this invention is to provide an alternative method of folding the knife blade for ease of carrying and safety.
This invention adds to and improves on the prior art invention of lain Sinclair, (UK Patent GB 2360478 B).
THE INVENTION
A panel the size of a credit card and 2 mm thick for example is moulded, machined or cast to create three hinges (see Fig. 5, (I)).
Plastic injection moulding in Polypropylene (PP), for example, is a preferred method of constructing the panel as it enables the hinges to be formed by the moulding process at low cost with hinges that may be flexed many times without work hardening which is characteristic of certain plastics including PP. The hinged panel provides a handle for the knife when the hinges are flexed allowing the hinged sections of the panel to be wrapped around the blade (see fig.1).
A blade (A) made from steel or other material suitable for being sharpened to form a cutting edge is attached to the plastic panel at it's blunt end and is located by three bosses (fig. 4, (H)).
The blade may be further fastened by adding glue, ultrasonic welding (commonly known as staking), rivets or other suitable method. The preferred method in this example is staking allowing the plastic bosses to flow into chamfered holes in the blade (A).
A further boss (E) helps lock the blade in the open and closed positions (fig. 2 & 4) and a lip (fig. 2 & 4, (F)) which the blade clips under provides additional safety, preventing the blade from coming out accidentally from the closed position.
Five smaller bosses (fig. 1 & 4, (C)) help keep the handle secured around the blade when in the open position (fig. 1) by fitting tightly into holes (fig. 4, (G)).
To open the knife: from the closed position (fig. 4), fold the blade outwards away from the panel through 180 degrees, then wrap the two hinged sides of the panel around the blade to form the knife handle.
The advantages of this device are as follows: 1) The knife in open and folded position is very lightweight and thin.
2) The folding method is ingenious and a conversation piece.
3) When in closed position there is a larger surface area for custom printing, advertising for example.
4) The thin blade enables a very sharp edge.

Claims (8)

  1. CLAIMS1) A flat (planar) hinged panel to which a blade is attached which when folded in a sequence form a knife blade and handle assembly.
  2. 2) A foldable flat assembly as in claim (1) which can be printed upon.
  3. 3) A foldable flat assembly as in claim (1) with matching bosses and holes which when folded around the blade tang clip together to prevent the handle formed by the panel sides from coming undone.
  4. 4) A foldable panel assembly as in claim (1) with bosses to enable location and attachment of a blade.
  5. 5) A folded panel assembly as in claim (1) with bosses to prevent the blade from inadvertent movement.
  6. 6) A folded panel assembly as in claim (1) with a lip or lips protruding over the blade when in closed position to prevent inadvertent opening.
  7. 7) A flat (planar) hinged panel as in claim (1) to which a blade is attached by means of ultrasonic welding (staking).
  8. 8) A blade longer than 50mm and below 1mm thickness.
GB201014473A 2010-08-31 2010-08-31 Folding pocket knife Withdrawn GB2483244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB201014473A GB2483244A (en) 2010-08-31 2010-08-31 Folding pocket knife

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201014473A GB2483244A (en) 2010-08-31 2010-08-31 Folding pocket knife

Publications (2)

Publication Number Publication Date
GB201014473D0 GB201014473D0 (en) 2010-10-13
GB2483244A true GB2483244A (en) 2012-03-07

Family

ID=43013475

Family Applications (1)

Application Number Title Priority Date Filing Date
GB201014473A Withdrawn GB2483244A (en) 2010-08-31 2010-08-31 Folding pocket knife

Country Status (1)

Country Link
GB (1) GB2483244A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2501051A (en) * 2011-09-08 2013-10-16 Iain Sinclair Safety catch for folding knife

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1280756A (en) * 1970-10-09 1972-07-05 Ernst Joachim Gerling Pocket-knife
JP2000279657A (en) * 1999-03-31 2000-10-10 Yoshino Kogyosho Co Ltd Simple razor
GB2360478A (en) * 2000-02-10 2001-09-26 Iain Sinclair Folding pocket knife

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1280756A (en) * 1970-10-09 1972-07-05 Ernst Joachim Gerling Pocket-knife
JP2000279657A (en) * 1999-03-31 2000-10-10 Yoshino Kogyosho Co Ltd Simple razor
GB2360478A (en) * 2000-02-10 2001-09-26 Iain Sinclair Folding pocket knife

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2501051A (en) * 2011-09-08 2013-10-16 Iain Sinclair Safety catch for folding knife

Also Published As

Publication number Publication date
GB201014473D0 (en) 2010-10-13

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)