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:
Jul. 27, 1982
Filed:
Jan. 18, 1980
Robert W Houskamp, Grand Rapids, MI (US);
Bell & Howell Company, Chicago, IL (US);
Abstract
A proportional speed control arrangement (100) is disclosed for use with vehicles requiring variable velocities of operation. Specifically, the arrangement is utilized with a traction motor apparatus (101) to provide velocity adjustments to a service type of vehicle via electronic circuitry responsive to signals generated from an interface controller (102). The interface controller (102) comprises acceleration switches (KI, KD) and an enabling switch (KE) which are responsive to activation thereof by external means to establish velocity command signals. The velocity command signals control the application of energizing signals to the motor apparatus. A requisite velocity is maintained by deactivation of the acceleration switches while correspondingly maintaining activation of the enabling switch.