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:
Dec. 09, 1997
Filed:
Dec. 04, 1995
Applicant:
Inventors:
Paul Thomas Fredell, Colorado Springs, CO (US);
Brett William Floyd, Longmont, CO (US);
Marc Jay Stein, Colorado Springs, CO (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E03B / ; F16L / ; F16L / ;
U.S. Cl.
CPC ...
137-2 ; 137 61 ; 137782 ; 137 80 ; 137551 ; 137557 ; 13762418 ; 340581 ; 340611 ;
Abstract
There is disclosed an apparatus for freeze prevention protecting an irrigation system. The response of the apparatus depends on environmental conditions. At a first temperature condition, the irrigation system is shut down. At a lower temperature condition, the system remains shut down and heat is delivered to the above ground portions of the system. In the event temperatures continue to decrease, a full drainage of the above ground portion of the irrigation system will be accomplished and alarm notification will be given.