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, 1982
Filed:
Feb. 20, 1980
Applicant:
Inventors:
Shigeru Matsuoka, Hitachi, JP;
Toshio Tsubaki, Hitachi, JP;
Takeshi Tokunaga, Hitachi, JP;
Seiji Yonekura, Hitachi, JP;
Kenji Nakamura, Hitachi, JP;
Mituo Suzuki, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05F / ; H02H / ;
U.S. Cl.
CPC ...
364167 ; 364513 ; 318266 ; 318469 ; 49 28 ;
Abstract
A door operation control apparatus comprising a memory circuit for storing a programmed data on door control processes in the form of a combination of command codes is disclosed. A door operation input signal, a mode or condition detection signal from a door operating device and the condition of the program being executed are used to determine logically the optimum door operating mode, thus controlling the door operating device.