US3748736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical knife
Assignee: Individual
•
Filing: 1971-12-13
•
Granted: 1973-07-31
•
Expires: 1991-12-13
Abstract
Abstract A surgical knife having a blade and a handle integrally molded on the blade. The blade has a cutting edge along at least one of its edges and an elongated knife guard having a channel formed along one of its edges mates with the cutting edge on the blade. The knife guard includes a molding runner connecting the handle to the knife guard with the molding runner also having a channel formed along one of its edges that mates with the cutting edge of the blade. Finger seats are formed on the knife guard whereby when it is desired to remove the knife guard from the blade a person may grip the knife handle in one hand and by pressing the thumb and forefinger of the other hand into the oppositely formed finger seats to secure a good grip the knife guard is pulled out of engagement with the cutting edge by a pivotal motion about the point where the molding runner meets the handle.
Inventors
- 👤 S Eisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:08
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3209; A61B17/3211; A61B17/3215; A61B2017/32113; A61B90/00; A61B90/03; A61B2090/037; A61B2090/038; A61B90/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
211 words
A knife comprising a blade, a handle integrally molded on said blade, said blade having a cutting edge along at least one of its edges that extends all the way back to the body of the knife handle, an elongated knife guard having a channel formed along one of its edges that mates with the cutting edge on said blade, said knife guard including a molding runner connecting said handle to said knife guard, said molding runner having a channel formed along one of its edges that mates with the cutting edge on said blade and said molding runner covering that portion of the cutting edge of said blade lying between said knife guard and the body of said handle, said handle and said guard being integrally molded from the same material, finger seats formed on said knife guard whereby when it is desired to remove the knife guard from the blade a person may grip the knife handle in one hand and by pressing the thumb and forefinger of the other hand into the oppositely formed finger seats to secure a good grip when the knife guard is pulled out of engagement with the cutting edge by a pivotal motion about the point where the molding runner meets the handle.
Claim 2
Dependent Claim
211 words
A knife comprising a blade, a handle integrally molded on said blade, said blade having a cutting edge along at least one of its edges that extends all the way back to the body of the knife handle, an elongated knife guard having a channel formed along one of its edges that mates with the cutting edge on said blade, said knife guard including a molding runner connecting said handle to said knife guard, said molding runner having a channel formed along one of its edges that mates with the cutting edge on said blade and said molding runner covering that portion of the cutting edge of said blade lying between said knife guard and the body of said handle, said handle and said guard being integrally molded from the same material, finger seats formed on said knife guard whereby when it is desired to remove the knife guard from the blade a person may grip the knife handle in one hand and by pressing the thumb and forefinger of the other hand into the oppositely formed finger seats to secure a good grip when the knife guard is pulled out of engagement with the cutting edge by a pivotal motion about the point where the molding runner meets the handle.
Claim 3
Dependent Claim
77 words
A knife as recited in claim 1 wherein the handle has a longitudinally extending top ridge and a longitudinally extending bottom spine and in cross section the body of the handle is formed by top walls that extend downwardly and outwardly from the top ridge and by concave walls that extend upward from said spine, the concave walls thus form hollowed finger gripping surfaces on the handle to provide a more positive and also more comfortable grip.
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |