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. 18, 1978
Filed:
Oct. 04, 1976
Hitachi, Ltd., , JP;
Abstract
A make-type contact of a relay-type member and a manual switch are connected between a commerical A.C. power supply and a load circuit. The manual switch is turned on only when it is being manually actuated and turned off when it is not manually actuated. A winding of the relay is connected to the load circuit such that an excitation current flows therethroiugh through the load circuit or a control unit, and it is also connected to the control unit for receiving signals from a remote control unit. When the manual switch is turned on through manual actuation, a power is supplied to the load circuit or the control unit to excite the winding-type portion so that the make-type contact is closed to hold the power to the load circuit even after the turn-off of the manual switch. When the control unit, on the other hand receives the signal from the remote control unit the winding-type portion is deenergized to stop the supply of the power to the load circuit.