Electrically operated tuning fork

Details Electrically operated tuning fork Electrically operated tuning fork

2006-03-14

2006-03-14

Kwok, Helen (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

C073S514310, C250S227110

Reexamination Certificate

active

07010978

ABSTRACT:
An electrically operated tuning fork apparatus includes a tuning fork having a base and a pair of tines. The tines have tips remote from the base, and are formed of or include material in which a magnetic field can be induced. The tuning fork apparatus also includes an electrical coil configured to receive at least a portion of both tines of the tuning fork. At least one of the tines can be vibrated relative to the other of the tines by passing a varying current through the coil to induce mutually repulsive magnetic fields in the tines.

REFERENCES:
patent: 3622819 (1971-11-01), Koehler
patent: 3753058 (1973-08-01), Edson
patent: 3803521 (1974-04-01), Hetzel
patent: 5067344 (1991-11-01), Fitzgerald et al.
patent: 5148733 (1992-09-01), Beller
patent: 5193391 (1993-03-01), Cage
patent: 5214279 (1993-05-01), Hakamata
patent: 6474162 (2002-11-01), Voss et al.
patent: 2114745 (1983-08-01), None
patent: 61-102512 (1986-05-01), None
patent: WO 99/04301 (1999-01-01), None

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