Key

Details Key Key

1988-05-16

1990-01-23

Luong, Vinh T.

Locks

Operating mechanism

Combination and key

70366, 70383, 70384, 70285, E05B 4706, E05B 3700

Patent

active

048950360

ABSTRACT:
A key for use with a lock having internally lugged tumblers comprises an elongate cylindrical member with a longitudinal keyway to receive the lugs. From the longitudinal keyway extend a plurality of circumferential grooves of coded lengths. From the ends of certain of these circumferential grooves extend second, axial grooves which extend back toward the handle of the key. These axial grooves permit the key to be pushed inwardly into the lock after the key has been fully turned. One of the circumferential grooves does not include an axial segment extending from the end thereof. This groove engages a member in the lock which is caused to move when the key is pushed inwardly after rotation. The movement of this lock member activates a printing mechanism inside the lock.

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MAC Recording Mechanical Access Control System from Supra, Supra Products, Inc., P.O. Box 3167, Salem, Oregon 97302, 10/3/1983.
The Supra Recording Key Safe MAC, Supra Products, Inc., P.O. Box 3167, Salem, Oregon 97302 (11/11/83).

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