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US 4,799,719 AGranted
Motor operated lock
OwnerGeorge Woodinventor
Life of this patent
Estimating the term…
Abstract
A motor operated lock wherein the motor is translated when the motor shaft rotates, the motor shaft acting as the bolt of the lock and engaging or disengaging the door to lock or unlock the door. The motor is located on a fixed platform and is moved by the cooperation of a nut affixed to the platform and a threaded portion of the motor shaft. The assembly can be located inside or exterior the wall and can be adapted for easy removal. The motor direction and travel limits are controlled by appropriate electrical circuitry.
Claims13
An electrical lock for preventing relative movement between first and second closure members, comprising:
- reversible electric motor having a rotatable shaft, for mounting on the first closure member;
- bolt means adapted and positioned to move from the first closure member to the second closure member;
- bolt engagement means for mounting on the second closure member for the bolt means to engage to lock the second closure member in place relative to the first closure member;
- means for converting rotational motion of said shaft to translational motion, said converting means connected to said bolt means and said motor shaft, so that when said motor shaft rotates, said bolt means moves translationally;
- and
- means for selectively activating said electric motor for selectively moving said bolt means into and out of engagement with said bolt engagement means for respectively locking and unlocking the closure members.
3 more elements
Dependencies are inferred from the claim text.