Cutlery – Sheathed – Pivoted blade
Patent
1995-02-24
1995-10-31
Payer, Hwei-Siu
Cutlery
Sheathed
Pivoted blade
30155, B26B 104
Patent
active
054617863
ABSTRACT:
A lock blade knife having a handle portion and a blade, the handle portion having a pair of spaced side plates which enclose the blade between them together with a spring which is urged towards the blade. One end of the spring is provided with a pawl which is received in a notch at one end of the knife blade when the blade is in the open position. When the pawl of the spring engages the notch of the blade, the latter is locked in open position. One plate is provided with a T-shaped slot consisting of a vertical oval slot and a transverse intersecting slot. A lever consisting of a button attached to a piece of spring steel which is bent at right angles is received in the T-shaped slot. The spring steel includes a vertical portion which connects at right angles to a horizontal portion, the horizontal portion having a pair of horizontally extending arms which bear against the edge of the horizontal slot. An outer end of the horizontal portion terminates in a finger which is received in a hole along an inboard side edge of the spring. Thus, when pushing down on the button, the ends of the arms will cause the lever to pivot to urge the spring in a direction away from the blade and cause the pawl to move out of the notch, permitting the knife blade to be closed.
REFERENCES:
patent: 1451607 (1922-04-01), Bates
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patent: 4124939 (1978-11-01), Onoue
patent: 4173068 (1979-11-01), Cargill
patent: 4541175 (1985-09-01), Boyd et al.
patent: 4570341 (1986-02-01), Konneker
patent: 4811486 (1989-03-01), Cunningham
patent: 4837932 (1989-06-01), Elsener
patent: 4985998 (1991-01-01), Howard
Dorman William S.
Payer Hwei-Siu
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