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. 20, 1976
Filed:
Dec. 05, 1974
Gary W Howell, Elkton, MD (US);
Danahey Ryan, Newark, DE (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Disclosed herein is a fluid handling assembly comprising a multi-valve assembly, a probe connected to a first valve structure in said multi-valve assembly, a plurality of secondary fluid sources connected to secondary valve in said multi-valve assembly and a pump connected to said multi-valve assembly. Each of the valves in the multi-valve assembly comprise valve seats, flexible diaphragms coacting with the valve seat to form leak-tight chambers containing orifices connecting the various channels in the valves, and a means to move the diaphragm to close off the connection between the orifices and thereby shut the valve.