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. 21, 2008
Filed:
May. 16, 2006
Applicant:
Joseph A. Sopko, Cedar Grove, WI (US);
Inventor:
Joseph A. Sopko, Cedar Grove, WI (US);
Assignee:
Layne Christensen Company, Mission Woods, KS (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25C 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A ground freezing system includes a metal feed pipe for delivering refrigerant to the lower end of a freeze pipe installed in a bore in the ground. The feed pipe is supported on a compression spring which accommodates thermal contraction of the feed pipe while maintaining support of its weight.