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. 05, 1980
Filed:
Oct. 30, 1978
Applicant:
Inventor:
Giancarlo Giuffredi, Milan, IT;
Assignee:
Coster Tecnologie Speciali S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B67D / ;
U.S. Cl.
CPC ...
222321 ; 222341 ; 222383 ; 222496 ;
Abstract
Reciprocating manual dispensing pump comprising a delivery valve provided with a shutter and associated with the movable part of the pump, and a suction or intake valve comprising a single piston movable against a spring within a tubular body forming therewith a compression chamber, which is hydraulically connected with an expansion chamber of a larger cross-section in the piston defined by a resiliently deformable part with which the delivery valve shutter is associated for closing a delivery conduit in such a piston.