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. 08, 1991
Filed:
Jun. 06, 1989
Hiroshi Konishi, Tokyo, JP;
Matsusaburo Noguchi, Tokyo, JP;
Joji Tadokoro, Tokyo, JP;
Noboru Otaki, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A sheet feed mechanism for feeding sheets one at a time, comprising a hopper loaded with a stack of sheets, a feed roller disposed near the outlet of the hopper, and a resilient tongue held in resilient contact with the central section of the feed roller. The central section of the feed roller is provided with an alternate circumferential arrangement of low friction portions and high friction portions. The friction coefficients between the sheet and the low friction portions is smaller than that between the sheet and the tongue, and the friction coefficient between the sheet and the high friction portions is greater than that between the sheet and the tongue.