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:
Jul. 13, 1993
Filed:
Jun. 28, 1991
Applicant:
Inventor:
E R Harrison, Plano, TX (US);
Assignee:
Halliburton Geophysical Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V / ; G01V / ; H04R / ;
U.S. Cl.
CPC ...
367144 ; 181120 ;
Abstract
A shuttle air gun for generating an acoustic output for seismic testing having improved wear rings and seals is provided. The composition of the wear rings includes polytetrafluoroethylene. The composition of the seals includes polyester and Teflon oil. A vent assembly overlying a firing chamber vent check valve eclipsing an firing chamber vent is also provided. The vent assembly limits the movement of an O-ring check valve when compress air is vented from the firing chamber.