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:
Aug. 30, 2005
Filed:
Feb. 26, 2003
Jon William Dukes, Columbia, SC (US);
Rickie Anthony Pendergrass, Rock Hill, SC (US);
Drew Leo Platts, Barnwell, SC (US);
Jairo Luiz Soares, Columbia, SC (US);
Jon William Dukes, Columbia, SC (US);
Rickie Anthony Pendergrass, Rock Hill, SC (US);
Drew Leo Platts, Barnwell, SC (US);
Jairo Luiz Soares, Columbia, SC (US);
Spirax Sarco, Inc., Blythewood, SC (US);
Abstract
A gas pressure driven fluid pump comprising a pump tank having a liquid inlet and a liquid outlet. A float, carried within the interior of the pump tank, is operable to move between a low level position and a high level position. A snap-acting valve control mechanism uses magnetic interaction to switch between exhaust porting and motive porting. Fluid exiting the pump tank causes the float to fall from the high level position to the low level position due to introduction of motive gas during motive porting. Exhaust porting begins when the float falls to the low level position.