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:
Apr. 26, 2005
Filed:
Mar. 28, 2003
Applicant:
Thomas G. Stratton, Roseville, MN (US);
Inventor:
Thomas G. Stratton, Roseville, MN (US);
Assignee:
Honeywell International, Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01L007/08 ;
U.S. Cl.
CPC ...
Abstract
A pressure sensor has a housing with an opening exposing a cavity, a barrier diaphragm across the opening, a pressure sensing element within the cavity, and a fill fluid within the cavity. The fill fluid comprises a fluid and a filler, the fluid has a TCE associated therewith, the housing has a TCE associated therewith, and the filler lowers the TCE of the fluid to a level matching the TCE of the housing. Accordingly, the housing and the fill fluid do not exhibit temperature induced dimensional changes relative to one another that cause plastic deformation of the barrier diaphragm.