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. 14, 1981
Filed:
Sep. 01, 1978
Toshio Yasui, Obu, JP;
Motoharu Naito, Okazaki, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
An electric control circuit for a safety apparatus adapted to be actuated by electrically operated actuator, the control circuit including an electric power source, a first storage condenser connected with the power source through a resistor to be charged in a predetermined time constant, a normally open switch interposed between the condenser and actuator to discharge the condenser through the actuator upon closure of the switch, a second storage condenser connected with the power source through a second resistor to be charged in a second predetermined time constant, the first-named time constant being normally larger than the second time constant, a comparator for comparing a first signal indicating the charged voltage of the first condenser with a second signal indicating the charged voltage of the second condenser to generate an output signal therefrom when the first-named time constant becomes smaller than the second time constant, and an indicator for indicating shortage of the charged voltage of the first condenser when received the output signal from the comparator.