Dispensing device and pumping element

Details Dispensing device and pumping element Dispensing device and pumping element

2005-09-23

2010-10-12

Shaver, Kevin P (Department: 3754)

Dispensing

Resilient wall

Supply container delivering to receiving chamber

C222S383100, C092S036000, C092S093000, C092S104000

Reexamination Certificate

active

07810678

ABSTRACT:
A device for dispensing at least one fluid comprises pumping means comprising an elastic deformable membrane (2) having a wavy annular wall (16) for producing a desired stiffness or pliability for said membrane (2). A pumping element (1) comprises a base (4) and said elastic deformable membrane (2).

REFERENCES:
patent: 3726442 (1973-04-01), Davidson et al.
patent: 4867347 (1989-09-01), Wass et al.
patent: 4936492 (1990-06-01), Amiel et al.
patent: 4962851 (1990-10-01), Schuckmann et al.
patent: 5551636 (1996-09-01), Foster et al.
patent: 2004/0026458 (2004-02-01), Fuchs
patent: 0 274 877 (1988-07-01), None
International Search Report for PCT/IT2005/000545 dated Jan. 26, 2006.

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