Locking device for boat sonar units and the like

Details Locking device for boat sonar units and the like Locking device for boat sonar units and the like

1990-10-03

1991-11-12

Wolfe, Robert L.

Locks

Special application

For portable articles

70 34, E05B 7300

Patent

active

050637630

ABSTRACT:
A locking device for locking instruments such as boat sonar units to their mounting brackets includes a key tumbler housing and a casing surrounding the key tumbler housing so that the tumbler housing rotates within the casing when a key is inserted in the tumbler housing, and remains locked in a fixed position when the key is removed. A threaded stud unit is connected to a rearward end of the tumbler housing which engages with a threaded hole in the instrument body when the tumbler housing is turned with the key. The instrument is locked to the bracket by passing the threaded stud through an opening in the bracket and engaging the stud within the threaded hole in the instrument body. A stop member is provided on a rear face of the casing which seats within the bracket opening, so that when the key is removed from the tumbler housing the locking device cannot be unscrewed from the instrument.

REFERENCES:
patent: 1971797 (1934-08-01), Shinn
patent: 4081979 (1978-04-01), Dowson
patent: 4942745 (1990-07-01), Jacobs

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