The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 1981
Filed:
Jan. 16, 1980
Earl J Genz, Des Plaines, IL (US);
Illinois Tool Works Inc., Chicago, IL (US);
Abstract
The present invention relates to electrical switches which are incorporated into a keylock, and more particularly, to switches of the type which have a rotatable mechanism which turns with the key, and fixed electrical terminals at the end of the keylock remote from the keyslot. In this type of switch, the contact member consists of a short conductive rod in a retaining cup which has a boss on its. A coiled spring is positioned over the boss on its upper end, and its lower end is retained in a blind aperture in a receptacle in the keylock. The keylock has a pair of extending arms which clamp the base with the electrical terminals of the switch in a fixed relationship with respect to the outer housing of the keylock while the conductive rod and the retaining cup rotate with the lock mechanism. The terminals have heads which are spaced from the base, and the retaining cup has a thin rim which has a lip on it which is shaped to allow the base to be held onto the retaining cup when the cup is turned relative to the base so that the elongated conductive bar is positioned in the open switch position, thereby allowing the complete assembly to be handled as a separate unit.