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:
Nov. 09, 1976
Filed:
Dec. 02, 1974
Applicant:
Inventors:
Einar T Young, Newtown Square, PA (US);
Robert L Tinklepaugh, Malvern, PA (US);
Assignee:
Sun Oil Company of Pennsylvania, Philadelphia, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; F16K / ;
U.S. Cl.
CPC ...
13762546 ; 251 58 ; 92 37 ;
Abstract
A rotary control valve which is actuated by a steel bellows mechanism for use in a gas chromatograph. The steel bellows mechanism changes the valve positions as required by the gas chromatograph operation. An improved spring design provides an even pressure to the disc rotating against the valve body as well as allowing this pressure to be varied. Use of steel bellows and the proper materials for construction of the control valve will allow complete installation in the oven of a gas chromatograph for operation at a maximum temperature of 600.degree. F.