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:
May. 20, 1980
Filed:
Nov. 25, 1977
Fred V Arrasmith, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A jam detector comprising a sensor for producing a first signal which indicates the presence of a document at a predetermined position in a document path and a second signal which indicates the absence of a document at the predetermined position in the document path. The presence and absence indicating signals are sampled at regular intervals of document motion along the document path and the resultant signals are applied in a preferred embodiment to a bidirectional counter to increment for presence signals and decrement for absence signals. These presence and absence signal indications are accumulated in the counter and a jam indication is produced when the accumulated count reaches a predetermined value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile