JOSEPH P JONES
Vehicle Board in Macungie, PA
License number
Pennsylvania MV199072
Category
Vehicle Board
Type
Vehicle Salesperson
Address
Address
Macungie, PA 18062
Professional information
Joseph Jones - Macungie, PA
Work:
Lehigh cooling and Heating Inc
Service Engineer Astro Mechanical Group Inc - Bally, PA
Service and Installation Manager
Service Engineer Astro Mechanical Group Inc - Bally, PA
Service and Installation Manager
Electromechanical Filter And Resonator
US Patent:
4137511, Jan 30, 1979
Filed:
Sep 13, 1977
Appl. No.:
5/832932
Inventors:
Joseph S. Jones - Macungie PA
Assignee:
Bell Telephone Laboratories, Incorporated - Murray Hill NJ
International Classification:
H03H 904, H03H 924, H03H 926
US Classification:
333 71
Abstract:
An electromechanical resonator, in the form of a single planar body, comprises a flexurally vibrating resonating element coupled at its midplane to a pair of torsionally vibrating couplers. Unwanted flexural modes in the resonator are substantially reduced by selecting a length-to-width ratio of the resonating element ranging between 3 and 4. A bandpass filter comprising a plurality of such electromechanical resonators may operate essentially free of spurious responses over a band of at least 200 kHz.