Lock block knife with single lock position

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United States of America Patent

PATENT NO 4901439
SERIAL NO

07345432

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A foldable knife (20) having a mechanism (29) whick locks its blade (21) in open position but not in its closed position within a pocket (27) formed in its sheath (22). Mechanism (30) is mounted at a pivot axis for the rotation of sheath (22) to blade (21), and comprises a body (31) eccentrically mounted to an axle (30), the block body (31) being releasably slidable into either an opening (44) formed in the thickness of blade (23) or into a position straddling opening (45) and a cavity (44) formed in handle side (23). When so straddled, the blade is locked in open position. A pin (38) mounted on axle (30) is depressed against the biasing of a spring (39) mounted to the other side of block body (31), to push it from its straddling position, so that it slides into the thickness of blade (21), whereby sheath (22) of knife (20) is rotatable about blade (21) to place the latter in its pocket (27). An alternative embodiment includes two blades (51a, 51b) in one sheath and separated by a leaf (57), operable in a similar manner.

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Patent Owner(s)

Patent OwnerAddress
F BOYD LTD1015 GIRARD STREET A CA LIMITED PARTNERSHIP SAN FRANCISCO CA 94134

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boyd, Jr Francis M San Francisco, CA 4 158

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