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. 04, 1989
Filed:
Aug. 01, 1986
Prentice G Moore, Clearwater, FL (US);
Stanley J Brooks, Palm Harbor, FL (US);
Pioneer Manufacturing, Inc., St. Petersburg, FL (US);
Abstract
An ionization smoke and fire detector comprises a molded plastic housing that includes a nodal ring for supporting a vibrating plate that is part of an alarm. The alarm may be driven by piezoelectricity or by an electromechanical device. If the detector is battery powered, a portion of the housing is cut out to permit removal and insertion of a battery holder that makes contact automatically upon insertion to supply electric power to the electronic circuit of the smoke detector. One electrode of a reference chamber for the smoke detector is formed by wave-soldering an open metallized area on the printed-circuit board. Contact with the movable element of the alarm and with a high-impedance input in an integrated circuit are made through springs that are not soldered or welded. The outside of the smoke and fire detector is formed in part by a smoke-chamber cover which makes various electrical contacts with the printed-circuit board at electrical conductors that are bent around the edge of the board and wave-soldered. The smoke and fire detector is assembled without screws and all electrical connections among components are made without welding, hand soldering, or any soldering beyond wave soldering of a printed-circuit board.