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:
Oct. 09, 1990
Filed:
May. 09, 1989
Sadao Unuma, Aichi, JP;
Tokai Kogyo Kabushiki Kaisha, Oobu, JP;
Abstract
A paper feeder has a pair of spaced opposed side frames, a driving sprocket having external teeth on the outer circumferential surface thereof and a supporting shaft on which the driving sprocket is mounted and rotably mounted between the two side frames, and an endless feed belt having a portion around the driving sprocket and having feed pins on the outer circumferential surface and engageable with perforations in perforated paper, and having internal teeth on the inner circumferential surface thereof meshed with the external teeth for being turned by the driving sprocket. A pair of ring members is pivotably mounted around the ends of the rotary shaft at opposite ends of the driving sprocket and each having an arcuate friction wall thereon extending to a position opposed to the outer surface of the portion of the feed belt extending around the sprocket with a clearance between the inner surface of the friction wall and the outer surface of the feed belt, and a belt engaging member on the ring member extending to a position spaced just outwardly of the portion of the feed belt as it comes off the driving sprocket.