Mounting apparatus and method for piezoelectric tuning fork
US4429248A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 1981 |
| Grant date | Jan 31, 1984 |
| Priority date | — |
| Expiry date | May 27, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/21
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An improved mounting apparatus and method for a piezoelectric tuning fork (10) of the type made from a rectangular plate of quartz or similar material, the fork having a stem portion (12) and a pair of tines (14, 16) extending from the stem and defining between them a crotch (18) where they join the stem. The stem is supported on a pedestal (20-36) in such a way that the forwardmost edge (38) of the pedestal is spaced a distance d (in mils) having a magnitude in the range of 2565n/f to 3135n/f, where n is an integer and f is the fundamental frequency of the tuning fork in kilohertz. Improved suppression of overtone components is achieved during operation in the fundamental mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.