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:
Apr. 19, 1988
Filed:
Apr. 06, 1987
Melvin S Nation, Elmhurst, IL (US);
Edward W Wanatowicz, Jr, Elk Grove, IL (US);
Illinois Tool Works Inc., Chicago, IL (US);
Abstract
An electrical switching device for door actuated operation especially configured for conversion between grounded and non-grounded operation is disclosed. The device includes a housing including a stationary contact and a moveable contact. The moveable contact is actuated by a door operated actuator which moveable contact makes and breaks contact with the fixed contact and completes a circuit to ground through the housing. The moveable contact and fixed contact are configured to receive and cooperate with an insulation member insertable between the two contacts and an additional contact member insertable between the insulation member and the moveable contact to convert the switch to non-grounded operation.