Pump dispenser

Details Pump dispenser Pump dispenser

2007-03-16

2010-11-30

Shaver, Kevin P (Department: 3754)

Dispensing

Fluid flow discharge

Fluid flow generated by manually actuated working member

C222S207000, C222S209000

Reexamination Certificate

active

07841494

ABSTRACT:
The invention is a pump cap that is designed to seat on top of a receptacle, which in at least one example is filled with powder or hair fibers. The cap is fitted on top with a deformable dome with an empty chamber of air within it. The cap has an air inlet with a check valve that then opens into a wide flared opening into the dome's empty chamber. The air in the dome is pushed past a check valve and down a long passageway into the receptacle to aggressively disturb the powder or hair fibers within the receptacle. The disturbed hair fibers or powder then exits the cap through a third passage with a flared opening that is flush with the bottom of the cap that then exits out the side of the cap.

REFERENCES:
patent: 277900 (1883-05-01), Hayes
patent: 1142636 (1915-06-01), Singer
patent: 1776489 (1930-09-01), Cobb
patent: 2098160 (1937-11-01), Perritt
patent: 2202079 (1940-05-01), Ayres
patent: 2223256 (1940-11-01), Kross
patent: 2358329 (1944-09-01), Houghton
patent: 2421183 (1947-05-01), Cakebread
patent: 6168781 (2001-01-01), Ukaji et al.
patent: 6616067 (2003-09-01), Hunter
patent: 7140522 (2006-11-01), Kress
patent: PCT/EP97/00205 (1997-07-01), None
patent: PCT/US00/14756 (2000-05-01), None

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