Locks – Operating mechanism – Using a powered device
Reexamination Certificate
2005-02-08
2005-02-08
Walsh, John B. (Department: 3676)
Locks
Operating mechanism
Using a powered device
C070S275000, C070S278700, C070S150000
Reexamination Certificate
active
06851291
ABSTRACT:
A motorized locking mechanism for locking and unlocking a device having a hub rotatable by a handle about a hub axis. A reversible motor turns a threaded spring screw to move a locking spring and vertically drive a connecting arm between locked and unlocked positions. A locking slide is mounted on the connecting arm and pivots parallel to the hub axis. The parallel pivoting motion of the locking slide protects the locking mechanism against damage. If the locking slide is temporarily prevented from moving into or out of locking engagement with the hub, the motor may still turn and the locking spring subsequently moves the locking slide in the desired direction without the necessity of reactivating the motor.
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Drawing of Sargent Keypad Lock Model KP-8276—Exploded View.
Photograph #1—Photograph of Sargent Model No. KP-8276 Keypad Lock.-.
Photograph #2—Photograph of Sargent Model No. KP-8276 Keypad Lock.-.
DeLio & Peterson LLC
Sargent Manufacturing
Walsh John B.
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