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. 06, 1989
Filed:
Feb. 25, 1986
Applicant:
Inventors:
August V Spalding, Pinole, CA (US);
Mahmoud H Sabet, Hayward, CA (US);
Ronald O Hamburger, Pacifica, CA (US);
Martin H Luk, Fremont, CA (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02D / ;
U.S. Cl.
CPC ...
405224 ; 405130 ; 405225 ; 622591 ;
Abstract
A method and apparatus for increasing the load bearing capacity of tubular piles by freezing an area of soil surrounding the piles. A refrigeration unit is located on the surface of an offshore structure and circulates cold brine to an isolated section of the pile. The brine freezes the soil surrounding the pile. Freezing the soil increases the surface friction beween the pile and the soil, providing increased load bearing capacity.