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. 30, 2004
Filed:
Jan. 10, 2003
Ettore Masuzzo, Eppstein, DE;
Stefan Christ, Hochheim, DE;
Aero Pump GmbH, Zerstäuberpumpen, Hochheim/Main, DE;
Abstract
An actuating head ( ) of a double-acting pump ( ) for ejecting a product ( ) from a container ( ) includes an outlet duct ( ) leading to an ejection opening ( ), wherein a closing piece ( ) biased by a spring ( ) is arranged in the outlet duct. The closing piece ( ) directly seals the ejection opening ( ) under the force of the spring ( ) and the closing piece ( ) releases as a result of the pressure exerted when actuating the double-acting pump ( ) the flow of the product ( ) through the outlet duct ( ) and through the ejection opening ( ) against the force of the spring ( ). For simplifying the construction and for avoiding the danger of contamination of the product, it is ensured according to the present invention that a first outlet duct section ( ) following the ejection opening ( ) is surrounded by a tube ( ) in which the closing piece ( ) is sealingly slideably guided and which is inserted in a bore ( ) in the body of the actuating head ( ), wherein the bore ( ) defines between itself and the tube ( ) an annular space forming a second outlet duct section ( ), wherein the annular space is connected through a third outlet duct section ( ) traversing the wall of the tube ( ) to the first outlet duct section ( ).