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:
Mar. 15, 1977
Filed:
Oct. 01, 1974
Applicant:
Inventor:
Maurice Barbier, Ousse, FR;
Assignee:
Societe Nationale des Petroles d'Aquitaine, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
181121 ; 181114 ; 181119 ; 340 / ;
Abstract
A device for generating sound waves for use in shallow terristrial seismology incorporates a percussion mass, a motor for driving the percussion mass to strike the ground for intermittent contact and adjustable to vary the frequency of impact, and a sensing element to provide a signal indicative of at least the instant of impact and preferably also the deceleration amplitude of impact.