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.

Date of Patent:
Oct. 26, 1976

Filed:

Jan. 27, 1975
Applicant:
Inventors:

Richard C Francke, Streamwood, IL (US);

John A Koepke, Des Plaines, IL (US);

Assignee:

Illinois Tool Works Inc., Chicago, IL (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
200314 ; 340151 ;
Abstract

A lighted pushbutton electrical switch assembly for either one light or two light operation is provided with a switching mechanism that has one or more upwardly projecting depressible actuating members and a plurality of terminal leads which pass up the outside of the housing to the top of the housing where they are terminated in connecting pads with a pad at each of the four corners of the housing and one in the center which is electrically connected to one of the corner pads. An outer housing receives the switching mechanism in its lower end and a lens section in its open upper end. An intermediate horizontal partition in the housing retains a plurality of conductive coil springs to make contact between the connecting pads and the bulbs. The pushbutton member for actuating the switch receives the light bulbs in apertures in its base. Electrical contacts secured on the pushbutton member complete the circuit for the light bulbs.


Find Patent Forward Citations

Francke, Richard. (1976). Lighted pushbutton electrical switch assembly (U.S. Patent No. 3988557). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3988557

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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