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:
Jun. 15, 1982
Filed:
Sep. 18, 1980
Applicant:
Inventor:
Philip N Martin, Tulsa, OK (US);
Assignee:
Mapco, Inc., Tulsa, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
181116 ; 181114 ; 181401 ; 89 4 / ;
Abstract
An improved seismic energy source having a base with an opening therethrough and having a gun mounted on the base for firing a projectile to impact on the earth's surface and generate a seismic signal, the improvement including a spatter plate and a flexible diaphragm affixed at its periphery to the base lower end, the diaphragm having an opening through which the projectile fired by the gun passes, the diaphragm serving to keep the base chamber free of compacted soil kicked up when the projectile impacts the earth and to contain and quiet the muzzle blast.