초록 ▼

A lock intended primarily for gliding or hinged doors or windows. The lock is an improvement over the prior art in that it is a very simple mechanism which nonetheless is secure and cannot be back-driven. The lock mechanism is made up of essentially two parts: a cam gear which is rotatably mounted o

A lock intended primarily for gliding or hinged doors or windows. The lock is an improvement over the prior art in that it is a very simple mechanism which nonetheless is secure and cannot be back-driven. The lock mechanism is made up of essentially two parts: a cam gear which is rotatably mounted on a housing and acts as an actuator, and a cam rack which is linearly slidable relative to the housing. Rotation of the cam gear causes the cam rack to move between an unlocked and a locked position. Once in the locked position, a gear tooth of the cam gear engages with a stop surface on the cam rack to prevent the cam rack from being back-driven.

대표청구항 ▼

A lock, comprising: a housing; a cam gear pivotably mounted on said housing, said cam gear having a first lateral gear tooth and a center gear tooth; and a cam rack slidable linearly relative to said housing, said cam rack having a centrally disposed engagement portion, a first lateral cam surface,

A lock, comprising: a housing; a cam gear pivotably mounted on said housing, said cam gear having a first lateral gear tooth and a center gear tooth; and a cam rack slidable linearly relative to said housing, said cam rack having a centrally disposed engagement portion, a first lateral cam surface, and a first lateral stop surface located adjacent said first lateral cam surface; wherein rotation of said cam gear in one direction causes said cam rack to slide between an unlocked position and a first locked position; wherein upon initial rotation of said cam gear in said one direction, said center gear tooth engages said engagement portion, causing said cam rack to slide toward the first locked position, and upon further rotation of said cam gear in said one direction, said first lateral gear tooth engages said first lateral cam surface, causing said cam rack to slide into the first locked position; and wherein when said cam rack is in the first locked position, said first lateral gear tooth engages said first lateral stop surface to prevent the cam rack from being moved back to the unlocked position.