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:
Oct. 05, 1976
Filed:
Oct. 01, 1974
Teizo Fujita, Osaka, JA;
Izumi Denki Company Limited, Osaka, JA;
Abstract
Alarm apparatus for providing a distinctive indication of an alarm condition and comprising a visual alarm device such as a signal lamp and also an aural indication device comprising either a bell or buzzer. In response to an alarm input, an astable multivibrator is operated to a condition where it alternately provides respectively opposite outputs at its two output terminals. In response thereto, the lamp is intermittently energized to provide a flashing signal output, and the buzzer or bell is energized to provide a distinctive alarm signal. An acknowledge push button is also provided which, when actuated in response to an alarm indication, operates the astable multivibrator to a further condition in which both outputs of the multivibrator assume the same output condition, and in response to this the lamp becomes steadily energized and the bell or buzzer becomes deenergized.