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:
May. 04, 1976
Filed:
Nov. 29, 1974
Stephen P Geishecker, Wrentham, MA (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A solid state switch particularly useful in assisting in the starting of permanent split capacitor (PSC) motors is disclosed in which a semiconductive element is used to affect the starting torque of the motor. The semiconductive element is a disk-shaped member composed of material having a relatively low resistance at temperatures below an anomaly point and a steeply sloped positive temperature coefficient (PTC) of resistivity at temperatures above the anomaly. The PTC element is mounted within a casing which comprises two identical interfitting halves and is in electrical connection with members which are combination contacts and terminals. The terminals extend through the casing wall and are provided with contact portions which engage the PTC element along an annular portion of the element near the outer periphery thereof. One contact is provided with spring fingers adapted to react against a wall of the casing to provide desired contact force.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile