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:
Feb. 17, 1987
Filed:
May. 24, 1985
Herman E Frentzel, Kentfield, CA (US);
Arneson Products, Inc., Corte Madera, CA (US);
Abstract
An automatic valve is disclosed for controlling the direction of fluid flow. The valve is particularly suited for use with automatic pool cleaning systems to alternately direct fluid flow to the filtration system of an automatic pool cleaner. The valve includes a primary conduit and a branch segment to define an alternate path for fluid flow. A reciprocating piston is mounted within the branch segment. Indexing is provided by a first cammed surface, formed at one end of the piston which includes a plurality of slots. The slots are selectively engaged with a stop pin. The condition of the valve is determined by the length of the particular slot engaged with the stop pin. A spring is provided for biasing the piston out of engagement with the stop pin when the fluid flow is interrupted. In one embodiment of the subject valve, the volume and pressure of the fluid flow are automatically controlled.