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:
Feb. 07, 1984
Filed:
Aug. 28, 1981
Applicant:
Inventors:
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318601 ; 318616 ;
Abstract
In a sheet feeding apparatus for transmitting the rotation of the motor shaft of a motor to a sheet feeding shaft for feeding a sheet by an elastic transmission mechanism, a speed state amount of either or both of the motor shaft and sheet shaft is compared to a position deviation signal at the input side of the motor and the resulting deviation signal therebetween is applied to the motor as a motor control signal to control it, thereby improving the dynamic characteristics of the sheet feeding.