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:
Sep. 29, 1981
Filed:
Sep. 14, 1979
Edward I Nelson, Sunrise, FL (US);
Burroughs Corporation, Detroit, MI (US);
Abstract
The invention relates to a reconfigurable photo-optical keyboard having removable keys. The keystem of each key is shaped to the key apertures in the keyboard housing. At least one of the sidewalls of the keystem has one or more flexible fingers which have terminal ends at the bottom of the key. There are retainer flanges at the terminal ends. The retainer flanges lock beneath the bottom surface of the optical keyboard when the key is inserted. The flexible fingers are resilient enough to allow the flanges to release and the keys to be removed from the apertures with a strong pulling pressure. Thus, additional keys can be incorporated into an existing keyboard or unused keys removed.