Omco, Inc.

Nissan Motor Company Limited

Richard E Hoyt

Anker J Nielsen, Jr

A high security lock and a high security key for locking and unlocking said lock. The lock has a resilient O-ring seated in the bore of a hollow plunger and a retainer sleeve fixed in the bore of the hollow plunger and bearing against the rear surface of the O-ring. A center pin with an enlarged forward head extends rearwardly through the bore of the plunger, the O-ring gripping the periphery of the center pin and yieldably resisting center pin reciprocal movement within the plunger bore. The key has elongated outer expanding fingers and an inner coaxially arranged center pin. When the key is fully inserted into the lock and the key handle is operated, the expanding fingers are initially radially expanded to grip the inner surface of the lock plunger bore, and are then longitudinally retracted to draw the plunger rearwardly. Simultaneously, the key center pin is prevented from retracting and holds the lock center pin stationary permitting the lock to unlock.

High security locks and key

A bolt type lock puller for removing jammed bolt type locks from lock housings. This lock puller is necessary to correct situations in which a thief has tried to open a bolt type lock by driving a nail into the keyhole. The lock is usually distorted by the nail and jams in the locked position. Therefore, the lock cannot be removed by a security key. The lock puller utilizes split jaws with opposed teeth which progressively bite the head of the lock. A longitudinally extending stud is drawn axially to cause the split jaws to pull the clamped lock out of the lock housing.

Bolt type lock puller

A device for locking a rectangular electric meter box having an openable front cover. The device has an L-shaped lock housing which includes a first leg fixed to the front cover of the box and a second leg which is detachably fastened to the side wall of the box when the front cover is closed. A barrel lock is inserted into the second leg of the lock housing to block unauthorized removal of the detachable fastener from the side wall of the meter box.

Locking device for an electric meter box

A bolt type lock puller for removing jammed bolt type locks from lock housings. This lock puller is necessary to correct situations in which a thief has tried to open a bolt type lock by driving a nail into the keyhole. The lock is usually distorted by the nail and jams in the locked position. Therefore, the lock cannot be removed by the security key. The lock puller utilizes split jaws with opposed teeth which clamp around the head of the lock. A longitudinally extending stud is drawn axially to cause the split jaws to pull the clamped lock out of the lock housing.

Growing community of inventors

Worcester, MA, United States of America

Richard E Hoyt