Pumps – Processes
Patent
1994-04-18
1996-01-02
Bertsch, Richard A.
Pumps
Processes
417480, 417437, 36 88, 36 93, 36114, 29516, F04B 4302
Patent
active
054802873
ABSTRACT:
Method for manufacturing pumping devices, particularly usable in sports shoes, including the monolithic molding of a body having at least one tubular passage and a first and a second seat for air venting and intake valves. The body furthermore includes at least one chamber with a partially open elastically deformable wall. The method entails the closure of the chamber, whereas the valves and at least one inflatable plenum chamber are associable within the body thus obtained, before closing it. The pumping device thus obtained has optimum functional characteristics as well as very low manufacturing costs.
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Morandin Alessandro
Pozzebon Adolfo
Pozzobon Alessandro
Bertsch Richard A.
Josif Albert
Korytnyk Peter G.
Modiano Guido
Nordica S.p.A.
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