IP Library › Granted Patent US 12673437
Granted Patent B2
US 12673437 · App. 18/592,980 · Granted Jul 7, 2026

Knife with push button articulated spring

Inventor: Scott Reed (Locust Grove, OK)
B26B1/046B26B1/10
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Quick Facts
Patent No.
US 12673437
App. No.
18/592,980
Granted
Jul 7, 2026
Kind
B2
Abstract

A folding knife with a push button automatic open spring configuration to propel the pivoted knife blade outwardly from between the support handle frames. A bifurcated compound spring configuration has a transverse blade engagement portion and a pair of returning integral handle engagement arms against which the spring is compressed when in closed folded position within the handle. The bifurcated spring exerts opening force on the blade when the blade is released to a full open use position.

Claims (10)

1 . An automatic opening folding blade knife comprising, a handle portion having a pair of frame members defining a recess into which a knife blade is capable of retracting,

a dual bifurcated blade engagement spring retained within said handle portion,

said dual bifurcated blade engagement spring having elongated pairs of vertically spaced parallel arms, said arm pairs interconnected to one another defining frame members engagement arm pair and a blade engagement arm pair of a single spring wire in spaced vertical overlying position to one another,

said blade engagement arm pair having a continuous end linkage for direct transverse contact with said knife blade when retracted within the handle recess,

a blade release, registerable with said knife blade.

2 . The automatic opening folding blade knife of claim 1 wherein said knife blade has an apertured proximal end tang with locking and release notches therein.

3 . The automatic opening folding blade knife of claim 1 wherein said dual bifurcated blade engagement spring applies force on said blade adjacent to said blade release when in retracted closed position.

4 . The automatic opening folding blade knife of claim 1 wherein said dual bifurcated blade engagement spring frame members engagement arm pair have respective free ends in contact with said frame member and are in spaced vertical overlying position to said blade engagement arm pair continuous end linkage.

5 . The automatic opening folding blade knife of claim 1 wherein said blade release registerable with said knife blade comprises,

a spring urged button extending into said frame and said handle portion.