ALAN B HALE
Pilots at Cheney Spokane Rd, Amber, WA
License number
Washington A0752292
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
2324 Cheney Spokane Rd, Amber, WA 99004
Professional information
Vibration Sensor
US Patent:
6135969, Oct 24, 2000
Filed:
Mar 26, 1999
Appl. No.:
9/277502
Inventors:
Alan Hale - Cheney WA
Matt Miley - Spokane WA
Allan Passey - Spokane WA
Matt Miley - Spokane WA
Allan Passey - Spokane WA
Assignee:
XN Technologies, Inc. - Cheney WA
International Classification:
A61B 511
US Classification:
600595
Abstract:
A circular layer of piezoelectric material is supported on a larger substrate disc of a thin somewhat flexible material. Flexing of the disc generates an electrical signal. The substrate disc is weighted at its periphery, and the central portion of the disc is supported on a member for transferring motion or vibration that it is desired to detect. In the preferred embodiment the center support is provided by a pair of bosses projecting into the otherwise hollow interior of a two-part casing that encloses the disc-weight assembly. The weights impart a peripheral inertia that makes the composite unit sensitive to minute vibrations.