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:
Nov. 08, 1983
Filed:
Feb. 01, 1982
John T Schneider, Apollo, PA (US);
Allied Corporation, Morris Township, Morris County, NJ (US);
Abstract
Apparatus for controlling the speed of a motor which includes a switch connected in series with the motor for controllably conducting an A.C. signal to the motor and means for controlling the switch which includes first means for generating a series of pulses at a frequency which may be varied according to an input signal, second means for generating a pulse once per cycle at a zero crossing of the A.C. signal, third means for generating a pulse at said A.C. signal zero crossing if a pulse was produced by the first generating means during the A.C. cycle immediately preceding said zero crossing, and fourth means responsive to the output of the third generating means for generating a pulse which is supplied to and renders conductive said switch for one complete A.C. cycle.