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:
Dec. 21, 1982
Filed:
Apr. 15, 1980
Applicant:
Inventors:
Shigeru Matsuoka, Hitachi, JP;
Takeshi Tokunaga, Hitachi, JP;
Seiji Yonekura, Hitachi, JP;
Mituo Suzuki, Hitachi, JP;
Kenji Nakamura, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G08C / ;
U.S. Cl.
CPC ...
34082532 ; 34082537 ; 34082572 ; 340539 ; 340541 ; 340506 ; 49 25 ; 49 31 ; 318 16 ; 318266 ;
Abstract
A garage door operation control apparatus includes a door operating system for opening and closing the main door of a garage, a main detection circuit for detecting the open or closed condition of the main door, an auxiliary detection circuit for detecting an open condition of a window or an auxiliary door of the garage, a fire in the garage or generation of a special gas therein, an alarm and a signal processing circuit. Electrical signals from the detection circuit are logically analyzed thereby to control the door operating system and the alarm.