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:
Jan. 25, 1983
Filed:
Feb. 23, 1981
Todd C Green, Chicago, IL (US);
Illinois Tool Works Inc., Chicago, IL (US);
Abstract
An electrical lighted pushbutton switch is constructed by inserting a light source in the housing of the switch below a depressible actuating plunger that has a keycap retaining post. The keycap retaining post has a passageway which runs through it from its top surface to its bottom surface which is in alignment with the light source. The removeable keycap has locking detent provisions which cooperate with a mating locking groove on the retaining post. The keycap has a centrally located channel through its top surface that leads to an open cavity and is in alignment with the passageway through the keycap retaining post. A light pipe is inserted that has an upper section that fits into the channel of the keycap, a flange located below this upper section which keeps the light pipe from being forced upwardly through the channel in the keycap and a lower tapered section which is inserted into the passageway of the keycap retaining post.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile