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:
Oct. 20, 2020
Filed:
May. 18, 2018
Applicant:
Pgs Geophysical As, Oslo, NO;
Inventor:
Nils Gunnar Olof Kröling, Kävlinge, SE;
Assignee:
PGS Geophysical AS, Olso, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 1/135 (2006.01); G01V 1/145 (2006.01); G01V 1/38 (2006.01);
U.S. Cl.
CPC ...
G01V 1/135 (2013.01); G01V 1/145 (2013.01); G01V 1/38 (2013.01); G01V 1/3808 (2013.01); G01V 2210/127 (2013.01); G01V 2210/1214 (2013.01);
Abstract
The disclosure herein generally relates to a device for use in marine seismic surveying. A displacement apparatus has a base and an actuated head. The actuated head is coupled to an actuation means comprising a shaft, a cam, and a motor. The cam is coupled to the shaft at a radial position from the center of the cam. A vacuum piston is optionally coupled to the actuation means. A variable resonance spring, such as an air spring, is coupled to the actuated head in order to tune the apparatus to operate in resonance at a range of frequencies.