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:
Apr. 10, 2012
Filed:
Nov. 22, 2006
Deon Stafford Anex, Livermore, CA (US);
Charles Martin Schwimmer, Los Gatos, CA (US);
David Laurence Black, Los Gatos, CA (US);
Richard Dean Rush, Belmont, CA (US);
Michael James Gearhart, Fremont, CA (US);
Deon Stafford Anex, Livermore, CA (US);
Charles Martin Schwimmer, Los Gatos, CA (US);
David Laurence Black, Los Gatos, CA (US);
Richard Dean Rush, Belmont, CA (US);
Michael James Gearhart, Fremont, CA (US);
Eksigent Technologies, LLC, Dublin, CA (US);
Abstract
One embodiment of the present invention provides a piston assembly having a piston housing filled with an electrolyte; a housing within the piston housing that divides the piston housing into a first portion and a second portion, the housing having apertures, a shaft connecting the housing to a piston head outside of the piston housing; and a porous material inside of the housing in contact with the electrolyte. Additionally, there are provided a method for filling the delivery chamber with a delivery fluid by withdrawing the piston head from within the delivery chamber. Yet another embodiment provides a method for filling a fluid delivery assembly by withdrawing a shaft from within the fluid delivery assembly to simultaneously displace a moving pump element within the delivery chamber and bypass fluid around a housing in the pump chamber.