US3845554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knife blade and handle
Assignee: Individual
•
Filing: 1973-04-19
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Granted: 1974-11-05
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Expires: 1993-04-19
Abstract
Abstract A flat sheet steel knife blade is provided with three equidistantly spaced openings. Two of these openings permit the blade to be used in one, or a reversed position, in a holder made up of two separable mating parts. These handle parts need not be separated in order to remove the blade for reversing or replacement. A leaf spring mounted in the holder has projecting pins which are adapted to enter the two blade openings in the blade, said leaf spring being manually movable between a blade clamping and a blade release position.
Inventors
- 👤 R Lavoie
- 👤 N Joanis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:15
CPC Classifications
B; B26; B26B; B26B5/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
179 words
A holder for a knife blade or the like and comprising in combination; a. a pair of mating handle parts, b. one of said parts having an internal blade clamping compartment for receiving a substantial portion of the blade, c. a leaf spring with a blade engaging portion adaptEd to overlie a substantial portion of a blade located in said compartment when said spring is in a blade clamping position, d. said other handle part having an internal spring receptacle for receiving said blade engaging spring portion when the latter is in a blade release position, e. said spring having an inner portion opposite said blade engaging portion, and an intermediate portion of said spring abutting said one handle part to define a fulcrum for said leaf spring, and f. a button projecting through an opening in said other handle part for moving said inner spring portion toward said one handle part and thereby moving said blade engaging portion into said spring receptacle of said other handle part and away from the blade to permit removal of the blade.
Claim 2
Dependent Claim
179 words
A holder for a knife blade or the like and comprising in combination; a. a pair of mating handle parts, b. one of said parts having an internal blade clamping compartment for receiving a substantial portion of the blade, c. a leaf spring with a blade engaging portion adaptEd to overlie a substantial portion of a blade located in said compartment when said spring is in a blade clamping position, d. said other handle part having an internal spring receptacle for receiving said blade engaging spring portion when the latter is in a blade release position, e. said spring having an inner portion opposite said blade engaging portion, and an intermediate portion of said spring abutting said one handle part to define a fulcrum for said leaf spring, and f. a button projecting through an opening in said other handle part for moving said inner spring portion toward said one handle part and thereby moving said blade engaging portion into said spring receptacle of said other handle part and away from the blade to permit removal of the blade.
Claim 3
Dependent Claim
69 words
A blade for the holder of claim 1 and comprising a thin flat steel element having symmetrically configured cutting ends, and said leaf spring having at least two projecting pins which enter corresponding openings in the blade to clamp said blade in its compartment, said blade having, at least, three such openings to permit said blade to be clamped in said holder in either one of two possible positions.
Claim 4
Dependent Claim
38 words
A holder as defined in claim 1 wherein said leaf spring blade engaging portion has at least two projecting pins which are adapted to enter openings in the blade when said spring is in its blade clamping position.
Claim 5
Dependent Claim
62 words
A holder as defined in claim 1 wherein said mating handle parts define a blade storage compartment, one of said handle parts having a finger opening communicating with said compartment, said one handle part further including a slot through which a blade can pass, and biasing means in said storage compartment for urging a plurality of such blades toward said finger opening.
Claim 6
Dependent Claim
67 words
A holder as defined in claim 1 wherein said spring blade engaging portion has at least two projecting pins on the side of said spring opposite said button, and a blade for said holder, said blade being flat and having symmetrically configured cutting ends, said blade having at least three openings two of which receive said spring pins when said spring is in its blade clamping position.
Claim 7
Dependent Claim
36 words
A holder as defined in claim 5 wherein said spring being normally biased toward said blade clamping position by a light spring acting between said one handle part and the inner portion of said leaf spring.
Claim 8
Dependent Claim
44 words
A holder as defined in claim 6 wherein said one handle part further defines a clearance chamber for the inner portion of said leaf spring and its biasing means to permit depressing said button and moving said leaf spring to its blade release position.
Claim 9
Dependent Claim
62 words
A holder as defined in claim 7 wherein said mating handle parts define a blade storage compartment, one of said handle parts having a finger opening communicating with said compartment, said one handle part further including a slot through which a blade can pass, and biasing means in said storage compartment for urging a plurality of such blades toward said finger opening.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |