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:
Jan. 29, 1985
Filed:
Mar. 05, 1982
Applicant:
Inventor:
Shigeru Matsuoka, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; E05F / ; G05D / ;
U.S. Cl.
CPC ...
340696 ; 49 25 ; 318267 ;
Abstract
Apparatus and method for door operation remote control. A radio transmitter transmits a door operation command signal for a predetermined time when the operator operates a switch, irrespective of a turn-on time of the switch. Upon receipt of the door operation command signal from the radio transmitter, a door operation control signal is generated to effect the operation of a door.