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:
Jun. 21, 1988
Filed:
Jan. 21, 1987
Ki W Song, Seoul, KR;
Kookje Elec. Ind. Co., Ltd., Seoul, KR;
Abstract
An electric power control switch for controlling heating temperature of a heating element such as an electric heater wherein a triangular cam groove is formed and a timing cam driven by a motor rotates the cam between a stationary piece and a movable piece carrying contacts. The electric power can be turned on and off by controlling the engagement of contacts on the two pieces. The contacts are positioned on contact strips. The cam arrangement includes a contact band-type cam follower for one of the contact strips; the control cam optionally connects electrical contacts for driving the timing cam. A guide pin for the contact carrying strips and the control cam interact to adjust the time period of engagement and disengagement between the contacts for the power supply to a heater by properly setting the timing cam spacing between the contacts for the heater.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile