Cutlery – Sheathed – Pivoted blade
Patent
1986-07-28
1989-06-13
Yost, Frank T.
Cutlery
Sheathed
Pivoted blade
30159, B26B 306
Patent
active
048379328
ABSTRACT:
A pocket-knife having a blade which is pivotable between open and closed positions, and which is lockable in the open position, is disclosed. The pocket-knife comprises a handle, a knife blade pivotaly mounted at one end of the handle, a beam spring extending substantially along the length of the handle, and a locking device for locking the knife blade in the open position. The beam spring is pivotally mounted for limited rocking movement within the handle. The beam spring includes a recess for receiving a retractable locking member of the locking device, a projection or ratchet tooth cooperating with the locking member, and cam guide cooperating with a tang portion of the knife blade to control the pivoting of the knife blade. When the knife blade is in its extended position, a spring urges the locking member into the recess of the beam spring. The projection on the beam spring abuts against the locking member, thereby preventing the rocking movement of the beam spring and retraction of the blade until the locking member is removed from the recess.
REFERENCES:
patent: 924070 (1909-06-01), Holman
patent: 1743022 (1930-01-01), Carman
patent: 1852400 (1932-04-01), Champlin
patent: 2728984 (1956-01-01), Hopta
patent: 4006514 (1977-02-01), Penman
patent: 4040181 (1977-08-01), Johnson
patent: 4302877 (1981-12-01), Hart et al.
patent: 4535539 (1985-08-01), Friedman et al.
Fridie Jr. Willmon
Victorinox AG
Yost Frank T.
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