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. 05, 1980
Filed:
Oct. 02, 1978
Applicant:
Inventor:
James W Grace, Cromwell, CT (US);
Assignee:
Timex Corporation, Waterbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65G / ; B65G / ; H02K / ;
U.S. Cl.
CPC ...
318128 ; 198751 ; 198762 ;
Abstract
A vibratory feed bowl driver having sensor for providing a signal responsive to the frequency and amplitude of vibration of a vibratory (parts) feeder and a driver circuit arrangement. The driver circuit arrangement is responsive to the output signal of the sensor for providing to the bowl's driver coil a variable width drive pulse at the optimum point in the bowl's mechanical cycle to maintain a desired amplitude of bowl vibration at the varying resonant frequencies of the bowl with loading.