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:
Feb. 02, 1988
Filed:
Jun. 13, 1986
Applicant:
Inventor:
Roger L Selsam, Rochester, NY (US);
Assignee:
Hydroacustics, Inc., Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01 / ; G01 / ;
U.S. Cl.
CPC ...
181119 ; 181106 ; 181401 ; 367912 ;
Abstract
A method and apparatus for downhole source generation of seismic waves of adjustable frequency by isolating a volume of liquid in a bore hole and cyclically varying the volume by a hydraulically operated transforming piston which varies the pressure of the volume thereby displacing the surrounding strata to generate waves.