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:
May. 23, 2006
Filed:
Dec. 05, 2003
Jon W. Dukes, Columbia, SC (US);
Rickie A. Pendergrass, Rock Hill, SC (US);
Drew L. Platts, Barnwell, SC (US);
Jairo L. Soares, Sao Paulo, BR;
Jon W. Dukes, Columbia, SC (US);
Rickie A. Pendergrass, Rock Hill, SC (US);
Drew L. Platts, Barnwell, SC (US);
Jairo L. Soares, Sao Paulo, BR;
Spirax Sarco, Inc., Blythewood, SC (US);
Abstract
A gas pressure driven fluid pump having a pump tank with a liquid inlet and a liquid outlet. A float assembly is carried within the interior of the pump tank and is movable between a low level position and a high level position. A compression spring is connected between the float assembly and a pivot member. Due to the force applied by the compression spring, the pivot member rotates to a first position when the float reaches its high level position and rotates to a second position when the float reaches its low level position. A valve assembly is connected to said pivot member to switch between motive porting and exhaust porting in a snap over fashion due to rotation of said pivot member between said first position and said second position. A damper system may be connected to the valve assembly to slow movement of the valve assembly between motive porting and exhaust porting.