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:
Feb. 05, 2002
Filed:
Apr. 10, 2000
Applicant:
Inventors:
Assignee:
Rexam Sofab, , FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 3/910 ;
U.S. Cl.
CPC ...
F04B 3/910 ;
Abstract
A pump of the type comprising a substantially cylindrical body ( ) in one piece provided, in its lower part, with a port ( ) for admission of a product and with a valve constituted by a cavity ( ) containing an element ( ) capable of moving between a lower stop ( ) corresponding to the obturation of said admission port ( ) and an upper stop ( ) corresponding to the opening of said port ( ), and wherein said upper stop ( ) is formed by at least one discontinuous internal projection ( ) whose transverse dimension (x) measured in the cavity ( ) is at least equal to 20% of the largest transverse dimension of the mobile element ( ).