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. 31, 1991
Filed:
Oct. 24, 1990
Akao Michitoshi, Nagoya, JP;
Takashi Nakata, Nagoya, JP;
Abstract
A sheet feeding system for ensuring feed of a single sheet includes a suction cup for holding the uppermost sheet of a stack. During initial lifting of the sheet, movement of the suction cup is halted for a predetermined time to allow sheets which have clung, by static attraction or otherwise to the uppermost sheet, to return to the stack. The initial lifting of the sheet takes place by swinging the suction cup about an axis. Thereafter the suction cup is lifted vertically to bring the topmost sheet into position to be taken up by portion feeding rollers and fed into a feed path. A stack empty detector employs a swinging arm which is positioned above the position the position of initial displacement of the suction cup so that, even if the last few sheets of the stack are initially attracted by the suction cup, the indicator will be prevented from giving a spurious 'stack empty' signal.