Buck Knives, Inc.

Leatherman Tool Group, Inc.

Roy L Helton, Jr

Brett P Seber

Randolph J Morton

Gregory F Rubin

Gabriel Alejandro Draguicevich

Harold J Carson

Robson L Splane, Jr

John Craddock

William P Debley, Jr

Kirby Johnson

A hand tool such as a knife or a combination tool includes multiple blades, each independently rotatable on a common axle between a closed position within a handle of the tool and an open position extending from the handle. Each blade is positively but releasably locked into its open position. Those blades which remain closed are biased toward the closed position when the opened blade is locked into position and also as it is opened and closed. A single locking, releasing, and biasing mechanism serves all of the blades in one handle.

Hand tool with multiple locking blades controlled by a single locking mechanism and release

A combination tool includes a tool head having a jaw mechanism with two jaws lying in a tool head plane. A first handle is pivotably attached to the jaw mechanism and rotatable in a first direction about a first pivot axle lying in the tool head plane, between a nested position wherein the first handle lies coplanar with and adjacent to the jaw mechanism and a deployed position wherein the first handle is coplanar with and remote from the jaw mechanism. A second handle is pivotably attached to the jaw mechanism and rotatable in a second direction, opposite to the first direction, about a second pivot axle lying in the tool head plane, between a nested position wherein the second handle lies coplanar with and adjacent to the jaw mechanism and a deployed position wherein the second handle is coplanar with and remote from the jaw mechanism. The combination tool further includes a set of blade tools including a first blade pivotably received in the first handle, and a second blade pivotably received in the second handle.

Combination tool with oppositely deploying handles

The blade of a folding knife is pivoted on a D-shaped pivot axle which also serves to lock the side pieces and belt clip of the knife in place. A thumb pin used to open the blade is also D-shaped and press fit into place in the blade. The blade has transverse grooves at its base to aid in extracting the knife from a sheath. The blade is locked into place by a side-lock plate, which is held in place by ridges in the side pieces. The side pieces are preferably made of rigid plastic, but with soft inserts in the sides for improved gripping.

Knife with movable blade

Hand tool with multiple locking blades controlled by a single locking

Folding knife for law enforcement

Folding Knife

A folding knife has a knife body and at least two blades pivotably mounted to the knife body. The blades are independently movable between a closed position within the knife body and an open position extended from the knife body. The blades are locked in the open position and released from the locking with a single hand of the user. The knife includes a blade selector feature which allows the user to select which blade is to be opened by rolling the knife about the knife longitudinal axis in the single hand of the user, and tactile coding so that the user can identify the position of the knife from its feel in the hand.

Growing community of inventors

San Diego, CA, United States of America

Roy L Helton, Jr