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, 1998
Filed:
Mar. 24, 1997
Patrick J Gallagher, Cedar, MN (US);
Larry R Mills, Zimmerman, MN (US);
Other;
Abstract
A suction relief apparatus for relieving suction at a suction connection of a swimming pool or spa having a main valve member movable from an open to a closed position to relieve suction at the suction connection in the event of a blockage of the suction connection in the pool. The main valve remains closed until a reset valve is opened, at which time a spring returns the main valve to the open condition, enabling suction to resume at the suction connection of the pool. A switch responsive to increased suction indicative of an obstruction may be utilized to deactivate a suction pump motor. In an alternative embodiment, a frangible member may replace the main valve and reset valves to open a connection to ambient air atmosphere in the event of increased suction in the suction line resulting from an obstruction at the suction connection in the pool.