Pumps – Expansible chamber type – Pressure responsive distributor opened responsive to pumping...
Patent
1977-01-10
1978-05-09
Vrablik, John J.
Pumps
Expansible chamber type
Pressure responsive distributor opened responsive to pumping...
417550, 417554, 222321, 222380, 222385, B05B 100, B05B 1100, F04B 2104, F04B 702
Patent
active
040884252
ABSTRACT:
The vertical hollow sleeve of a pump has a bottom open end receiving the top open end of a container with fluid. A top section of the sleeve has a first vertical bore with a bottom surface communicating with the bottom thereof and contoured to receive a convex diaphram. A hollow vertical extension slidably disposed in the first bore has a second vertical bore with a top disposed first orifice. The tip of a vertical member slidably disposed in the first bore fits movably into the first orifice. A mechanism engaging the extension and bottom surface has a horizontal chamber which in vertical cross section has the shape of a horizontally elongated axis. The diaphram forms the top surface of the chamber. The bottom surface of the chamber is formed by the rigid top end of a vertical cylinder which has a third vertical bore receiving the member. The member has a fourth vertical bore which communicates with an enlarged hollow region in the chamber. Slits in the region interconnect the interiors of the region and chamber. A ball is disposed movably in the chamber. A spring loaded device is disposed in the cylinder and engages the member. The pump expels a metered amount of fluid at each stroke.
REFERENCES:
patent: 3452905 (1969-07-01), Micallef
patent: 3746260 (1973-07-01), Boris
patent: 3908870 (1975-09-01), Nozawa et al.
patent: 3923250 (1975-12-01), Boris
patent: 3954354 (1976-05-01), Boris
patent: 4025046 (1977-05-01), Boris
patent: 4033487 (1977-07-01), Micallef
patent: 4051983 (1977-10-01), Anderson
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