Lock block knife with single lock position
AssigneeF. Boyd, Ltd., a California Limited Partnership
InventorFrancis M. Boyd, Jr.
Life of this patent
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AssigneeF. Boyd, Ltd., a California Limited Partnership
InventorFrancis M. Boyd, Jr.
Estimating the term…
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.
In a knife having a blade with tang pivotable about an axis and including handle sides forming a pocket into which the blade is pivotable about such axis into a closed position from an open position, an axle on such axis journalled in said handle sides, a block body mounted on said axle, a cavity formed in one of said handle sides, an opening formed in said tang corresponding in size and configuration to such cavity, said block releasably slidable between such opening and cavity only when the blade is in its open position, and means mounted to said axle for biasing said block body, the action of said biasing means always towards said cavity,
A knife apparatus having at least two blades having tangs with openings therein pivotable about the same axis to and from open locked and closed unlocked positions.
Dependencies are inferred from the claim text.