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. 29, 1978
Filed:
May. 18, 1977
Jean Roger, Conflans Ste Honorine, FR;
Aciers et Outillage Peugeot, Audincourt, FR;
Abstract
The variator comprises a triggerable silicon-controlled rectifier component for connection in series with the a.c. motor to the a.c. source, and a phase-shifting circuit connected to the terminals of the rectifier component and comprising a capacitive branch and a resistive branch which has a regulating potentiometer. The junction between these two branches is connected to the control electrode of the rectifier component. A unidirectional semiconductor component responsive to voltage is connected in parallel with the capacitive branch and a part of the resistive branch in which the potentiometer is inserted. The resistive branch comprises connected in parallel a first branch comprising a first resistor and the potentiometer and a second branch comprising a second resistor and a third resistor. The junction between the second and third resistors is connected to the slide of the potentiometer and the unidirectional component is connected to the junction between the potentiometer and the first resistor.