Folding knife with open lock feature having improved spring elem

Cutlery – Sheathed – Pivoted blade

Patent

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Details

30161, 30158, 30159, B26B 0306

Patent

active

050440799

ABSTRACT:
A knife having at least one blade or other implement foldable about a pivot axis at one end of the handle. A separate lock lever is associated with each blade or implement and has an end portion engaging a notch in the blade adjacent the pivot point to prevent movement of the blade away from the open position until the lock is manually released. The lock levers are mounted for limited pivotal movement at an intermediate position and urged toward engagement of the one end portion with the blade notch when the blade is moved to its open or erected position by respective beam springs. The improved beam springs are mounted upon linings in a position laterally spaced from their respective lock levers. The beam spring end opposite the mounted end is curved and extends laterally through a hole in its associated lining and contacts its associated lock lever. The lock levers are released from the blade notches by pressing upon portions of the lock levers arranged in transverse grooves which are longitudinally offset along the back of the knife at the end opposite the end at which the blades are pivotally mounted.

REFERENCES:
patent: 4573268 (1986-03-01), Call
patent: 4805303 (1990-02-01), Gibbs
patent: 4947552 (1990-08-01), Barnes

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