Isolating and temperature compensating system for resonators
US4406966A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1980 |
| Grant date | Sep 27, 1983 |
| Priority date | — |
| Expiry date | Jan 28, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A mounting structure for crystal resonators used as frequency standards and transducers which maximizes performance and reduces the sensitivity to environmental errors. In one embodiment, force sensitive crystal resonators having inherent unmounted temperature sensitivities are used in conjunction with reactive spring-like mounting arrangements having predetermined temperature stress characteristics such that the thermally induced mechanical stress of the mounting arrangements changes, compensates, and optimizes the overall combined temperature characteristics. In another embodiment crystal resonators are isolated from the external environment so that they are capable of sensing forces while operating in a vacuum or inert atmosphere. Environmental isolation is provided by bellows and/or diaphragm arrangements used alone or in conjunction with air-tight enclosures which enable forces to be applied to stress-sensitive crystals while isolating the crystals from the external force producing environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.