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US 4,354,572 AGranted
Portable seismic energy source
AssigneeMapco, Inc.
InventorPhilip N. Martin
Life of this patent
Estimating the term…
Abstract
A portable seismic energy source having a base for resting on the earth's surface, a gun providing a means of firing a projectile to impact the earth and generate a seismic signal and a ball and socket to mount the gun on the base to permit the projectile fired by the gun to strike the surface of the earth at a selectable angle.
Claims3
An improved portable seismic energy source comprising:
- a base having an upper plate and a lower circumferential ground seal means, the plate having an opening therethrough;
- a socket member mounted in said opening in said plate, the interior surface of said socket member being defined by a double truncated sphere;
- a ball member having an opening therethrough, said ball member being rotatably received within said socket member;
- a gun secured to said ball member having the barrel thereof in alignment with said ball member opening, the gun being thereby supported such that the angle of the gun barrel relative to the surface of the earth may be selected whereby a projectile fired by said gun passes through said ball member to strike the earth's surface beneath said base.
1 more element
Dependencies are inferred from the claim text.