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:
Dec. 12, 1995
Filed:
Feb. 08, 1994
Mohammad Ali-Safai, San Jose, CA (US);
Paul Huang, San Jose, CA (US);
Harry R Duer, Boulder Creek, CA (US);
Logitech, Inc., Fremont, CA (US);
Abstract
A rigid cylindrical roller for use in portable optical scanners. The roller includes a thinned midsection and a plurality of grooves. A plurality of compressible, surface gripping rings are fitted onto the plurality of grooves. Each surface gripping ring is held relatively immobile with respect to one another as well as to the roller. In one embodiment, the roller, the grooves, and the compressible rings are dimensioned such that in use, the surface-gripping rings are compressed inside the grooves at the points of rolling contact, permitting both the roller and the rings to come into contact with the scanned surface.