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:
Nov. 16, 1993
Filed:
May. 17, 1991
William F Bowers, Topsfield, MA (US);
Stephen G Hunt, N. Billerica, MA (US);
Millipore Corporation, Bedford, MA (US);
Abstract
An integrated system and method are disclosed for filtering a fluid and for dispensing a desired volume of the fluid. The integrated system includes a feed pump sub-assembly for receiving fluid and for directing the fluid through a filter. A filtration sub-assembly is joined with the feed pump sub-assembly for receiving fluid from the feed pump sub-assembly and for housing the filter. A dispense pump sub-assembly is integrally joined with the filtration sub-assembly and defines a dispense chamber for receiving filtered fluid from the filtration sub-assembly. The dispense pump sub-assembly includes a dispensing means which is moveable from a fill position to a purge position for purging at least a portion of any gas bubbles from the dispense chamber. The gas bubbles are purged through a purge outlet disposed above a fluid inlet and a fluid outlet of the dispense chamber. The dispensing means is also moveable from the purge position to a dispense position for dispensing a desired volume of the fluid from the integrated system.