Bolster-actuated lockback knife

Cutlery – Sheathed – Pivoted blade

Patent

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Details

B26B 104

Patent

active

041730682

ABSTRACT:
A bolster-actuated lockback knife having a handle formed with a knife blade receiving recess defined in part by a pair of spaced handle sides including a pair of spaced bolsters. One of the bolsters is an unlocking bolster identified with serrations and the other is a fixed bolster. The knife blade is pivoted between the sides adjacent a first end of the handle at which the bolsters are disposed. An elongated metallic main spring is disposed between the sides to form a bottom for the blade receiving recess, and the spring is anchored or restrained to the end of the handle opposite the first end. A first locking lug is formed on the main spring opposite the anchored end, and a second locking lug is formed on the pivoted end of the knife blade. The unlocking bolster is fixed to the free end of the main spring opposite the anchored or restrained end of the main spring. When manually operated, the unlocking bolster pivots the main spring about its handle anchor or restraint to disengage the two locking lugs to enable the knife blade to be returned to a closed position within the recess.

REFERENCES:
patent: 1169000 (1916-01-01), Brown
patent: 3568315 (1971-03-01), Smith
patent: 4040181 (1977-08-01), Johnson
patent: 4099327 (1978-01-01), Pesa

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