Dispensing pump for a fluid product

Details Dispensing pump for a fluid product Dispensing pump for a fluid product

2005-09-06

2005-09-06

Nicolas, Frederick (Department: 3754)

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

C222S321900

Reexamination Certificate

active

06938802

ABSTRACT:
A dispensing pump for a fluid product, including a pump body (10) in which at least one piston (20, 30) slides, wherein a pump chamber (40) is defined between an input valve (50) and an output valve (60), and the pump body (10) extends towards the inside of a tank (2) through a plunger tube (70), the input valve (50) being sealably connected to the plunger tube (70), the pump having a return spring (5) which brings the pump back towards its rest position, and characterized in that the spring is positioned out of any contact with the fluid product.

REFERENCES:
patent: 3851799 (1974-12-01), Paoletti
patent: 4056216 (1977-11-01), Kotuby
patent: 4278189 (1981-07-01), Kirk, Jr.
patent: 4437588 (1984-03-01), Shay
patent: 4511069 (1985-04-01), Kalat
patent: 4591077 (1986-05-01), Corsette
patent: 4991747 (1991-02-01), Van Brocklin
patent: 5409146 (1995-04-01), Hazard et al.
patent: 5560520 (1996-10-01), Grogen
patent: 5813571 (1998-09-01), Gaucher
patent: 28 38 613 (1980-03-01), None
patent: 2919686 (1981-03-01), None
patent: 1486392 (1967-10-01), None

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