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:
Nov. 29, 1983
Filed:
Aug. 03, 1981
Ramzi N Bader, West Covina, CA (US);
Spectrol Electronics Corporation, City of Industry, CA (US);
Abstract
An alarm device for monitoring the movements of a person is disclosed. The device is designed to be attached to a person's clothing and is particularly suitable for use by an emergency worker, such as a fireman. The device comprises a motion sensor, a signal processing circuit on a printed circuit board, and an alarm, all contained within a housing. The motion sensor includes a permanent magnet attached to one end of a spring located within an induction coil wound on a bobbin. The other end of the spring is attached to the printed circuit board so that a voltage is induced across the coil due to vibrations of the magnet relative to the coil in response to movements of the housing of the device. The signal processing circuit activates the alarm to generate an alarm signal if the person is immobile, for example, as the result of an injury, for a predetermined period of time.