Invention Grant
- Patent Title: Piezoelectric switch apparatus for a communication device
- Patent Title (中): 用于通信设备的压电开关装置
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Application No.: US917587Application Date: 1997-08-25
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Publication No.: US5977690APublication Date: 1999-11-02
- Inventor: David L. Ellis, II , Andrzej T. Guzik , Rudy Yorio , Steven D. Pratt , Sivakumar Muthuswamy , William Boone Mullen, III
- Applicant: David L. Ellis, II , Andrzej T. Guzik , Rudy Yorio , Steven D. Pratt , Sivakumar Muthuswamy , William Boone Mullen, III
- Applicant Address: IL Schaumburg
- Assignee: Motorola, Inc.
- Current Assignee: Motorola, Inc.
- Current Assignee Address: IL Schaumburg
- Main IPC: H03K17/96
- IPC: H03K17/96 ; H03K17/965 ; H01L41/08
Abstract:
A control switch for a radio is formed using an electro-mechanical assembly (400) which includes an array of cantilevered beams (402) laminated with piezoelectric film. A movable surface (404) includes protrusions (406) positioned to deflect the cantilevered beams and generate pulsed signals in a coded manner. Electronic circuitry (410) stores the pulsed signals and associates the signals with a position of the switch.
Public/Granted literature
- US4713622A Multiple state tone generator Public/Granted day:1987-12-15
Information query
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