Garage door lock

Details Garage door lock Garage door lock

1979-12-14

1981-10-13

Shepperd, John W.

Electricity: circuit makers and breakers

High-potential type

Rotating and pivoted

H01H 2706

Patent

active

042950163

ABSTRACT:
The invention is a lockable electrical switch including a cylindrical plug mounted within a shell for rotary movement between locked and unlocked positions and for axial movement between active and inactive positions, the plug defining a keyway and a plurality of tumblerways intersecting therewith. Residing in the tumblerways are tumblers that operatively engage the shell and the plug so as to prevent relative rotation therebetween in the absence of a proper key in the keyway. A movable contact is mounted for movement with the plug and a stationary contact is shaped and arranged so as to be engaged by the movable contact with the plug in both its unlocked and active positions but to be disengaged therefrom with the plug in either of its locked or inactive positions. Closure of the switch by engagement of the contacts requires the use of a key to rotate the plug into an unlocked position.

REFERENCES:
patent: 2517506 (1950-08-01), Riggs
patent: 2613288 (1952-10-01), Brown
patent: 3013129 (1961-12-01), Root
patent: 3345489 (1967-10-01), Kemnitz
patent: 3639708 (1972-02-01), Wolniak

Affiliated with

Also associated with

Rating

Garage door lock does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Garage door lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Garage door lock will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-932508