Pumping device with a pivotal lever for various valves

Details Pumping device with a pivotal lever for various valves Pumping device with a pivotal lever for various valves

1998-11-09

2000-11-14

Freay, Charles G.

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

137231, 137223, F04B 3910, F16K 1520

Patent

active

061461164

ABSTRACT:
A pumping device includes a main body having a passage defined therein and communicated with an air source. A retainer is slidably received in the main body and includes a chamber communicated with the passage of the main body. A nozzle is received in the chamber of the retainer and includes a nozzle passage communicated with the chamber. A plastic nozzle head is securely mounted in the main body and includes a valve chamber defined therein and communicated with the nozzle passage. A lever is provided for switching the retainer between a first inoperative position and a second operative position in which when the retainer is switched to the second operative position, the retainer exerts an inward force upon an outer periphery of the plastic nozzle head.

REFERENCES:
patent: 3926205 (1975-12-01), Gourlet
patent: 5379796 (1995-01-01), Wang
patent: 5666990 (1997-09-01), Wu
patent: 5715554 (1998-02-01), Downs et al.
patent: 5749392 (1998-05-01), Glotin
patent: 5819781 (1998-10-01), Wu
patent: 5890659 (1999-04-01), Schoeffel et al.

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