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. 15, 1990
Filed:
Oct. 10, 1989
Applicant:
Inventor:
Bob K Robertson, Stafford, TX (US);
Assignee:
Teledyne Exploration, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H04R / ;
U.S. Cl.
CPC ...
367159 ; 367165 ; 310337 ;
Abstract
In a tubular pressure transducer element, the axial stress imparted to the element is reduced relative to the radial stress by inserting a rigid core inside the tubular element. The reduction in stress is proportional to the ratio between the area of the full diameter of the tubular element and the area of the annulus represented by the wall thickness of the tubular element.