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:
Aug. 07, 1979
Filed:
May. 04, 1977
Applicant:
Inventor:
Karl R Grice, Jr, Honea Path, SC (US);
Assignee:
Fiber Controls Corporation, Gastonia, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ; D02H / ;
U.S. Cl.
CPC ...
318 68 ; 318432 ; 19240 ;
Abstract
A circuit for controlling the speed of a feed roller in a card or the like in which the sliver thickness is detected and a signal produced which is combined with signals representing feed and doff roller speeds, and a signal representing feed motor torque. The resulting signal is compared with a ramp signal to drive the feed motor so as to maintain sliver thickness at a desired value.