The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 1977
Filed:
May. 20, 1976
Applicant:
Inventors:
Alan E Willis, Stamford, CT (US);
Jack Schwarzschild, Stamford, CT (US);
Assignee:
Timex Corporation, Waterbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
29 2535 ; 2191 / ; 310-89 ;
Abstract
A method of trimming or tuning the frequency of vibration of a piezoelectric resonator comprising varying the ambient gas pressure within an unsealed resonator can until the desired frequency is obtained. The can is then sealed at the desired pressure, and thereby maintains the desired resonant frequency.