Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1994-07-12
1996-06-04
Chapman, Jr., John E.
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
7350416, 310370, G01P 904
Patent
active
055222498
ABSTRACT:
Single ended tuning fork inertial sensor having a housing and a single ended tuning fork of a quartz-like material of a predetermined thickness, the tuning fork has first and second tines lying in a plane and having an axis of symmetry and has a body formed integral with said first and second tines. The body is rigidly secured to the housing. The tines have a rectangular cross section and have a width which is different from the thickness. The body has a stem formed therein which has a width less than that of the body. Drive electrodes are secured to the tines. An oscillatory frequency is supplied to the above drive electrodes to excite the tines in a drive mode and in the presence of an axial angular rate to cause the tines to operate in a pickup mode which is substantially separated in frequency from the drive mode. The electrode patterns are laser trimmed in order to reduce quadrature offset.
REFERENCES:
patent: 4379244 (1983-04-01), Dinger
patent: 4479098 (1984-10-01), Watson
patent: 4674331 (1987-01-01), Watson
patent: 4694696 (1987-09-01), Hojo et al.
patent: 4791815 (1988-12-01), Yamaguchi et al.
patent: 4898032 (1990-02-01), Voles
patent: 4930351 (1990-06-01), Macy
patent: 4958519 (1990-09-01), Whaley
patent: 5056366 (1991-10-01), Fersht et al.
patent: 5131273 (1992-07-01), Tabata et al.
Soderkvist, "Design of a solid-state gyroscopic sensor made of quartz," Sensors and Actuators, vol. A21, No. 1/3, Feb. 1990, pp. 293-296.
Chapman, Jr. John E.
New SD Inc.
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