Invention Grant
US4096473A High output smoke and heat detector alarm system utilizing a
piezoelectric transducer and a voltage doubling means
失效
利用压电传感器和电压倍增装置的高输出烟雾和热探测器报警系统
- Patent Title: High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means
- Patent Title (中): 利用压电传感器和电压倍增装置的高输出烟雾和热探测器报警系统
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Application No.: US749024Application Date: 1976-12-09
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Publication No.: US4096473APublication Date: 1978-06-20
- Inventor: Louis P. Sweany , Michael T. Burk
- Applicant: Louis P. Sweany , Michael T. Burk
- Applicant Address: IN Indianapolis
- Assignee: P.R. Mallory & Co. Inc.
- Current Assignee: P.R. Mallory & Co. Inc.
- Current Assignee Address: IN Indianapolis
- Main IPC: G08B17/00
- IPC: G08B17/00 ; G08B17/06 ; G08B17/11 ; G08B19/00 ; G08B23/00 ; G08B25/00 ; G08B17/10
Abstract:
A high output smoke and heat detector alarm system comprises a high output audible alarm means which includes a piezoelectric transducer and a voltage doubling means in combination with an improved smoke and heat detector which includes a low voltage power supply source, an ambient temperature detecting means, at least one ionization sensing chamber, a voltage amplitude comparing means, and a low voltage sensing means.
Public/Granted literature
- US5665635A Method for forming field oxide film in semiconductor device Public/Granted day:1997-09-09
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