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:
Sep. 02, 1980
Filed:
Nov. 07, 1978
George Maclean, Oklahoma City, OK (US);
Eddy J Milanes, Oklahoma City, OK (US);
Harold W Pexton, Oklahoma City, OK (US);
Magnetic Peripherals Inc., Minneapolis, MN (US);
Abstract
As documents are moved serially past a servo motor-driven endorser, it endorses a stamp upon each. A transport signal dependent on document speed, and an endorser signal generated by an optical tachometer mounted to the servo motor, provide input to a frequency comparator. The output of the comparator is a control signal which controls the servo motor speed to adjust the endorser rotational surface velocity to equalization with the document speed. Logic circuitry sets the endorser at a zero angular position. Responsive to an endorse command, the endorser is accelerated to document speed, receives ink from a supply roller, then endorses the passing document. A counter and a digital comparator in cooperation with the tachometer signal completion of the endorsement whereupon the endorser is decelerated and placed in the zero position. Should a succeeding endorse command occur prior to complete deceleration, acceleration is resumed after a delay count given by a PROM and based upon the pulse count when the succeeding endorse command is received.