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US Patent: 3,564,956
Locking Plier Wrench
Bernard Landen - Fountain, CO

USPTO Classifications:
81/126, 81/175, 81/363

Tool Categories:
wrenches : pliers type wrenches : locking pliers


Summit Tool Company - Denver, CO

none listed

Patent Dates:
Applied: Feb. 21, 1966
Granted: Feb. 23, 1971

Patent Pictures:
Bernard Landen patent February 23, 1971
USPTO pdf tiff
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Adjustable "over center" toggle locking plier wrench, with an optional "lock preventing latch" to allow for ratchet-like action.

The corresponding trade mark (RATCHLOK no. 1,186,455) was registered Jan. 19, 1982 and cancelled Sept. 10, 1988.

Patent nos. 372,080, 1,810,938, 2,471,734, 2,536,463 and 2,577,888 are cited as references; Richard W. Haner - patent attorney

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