Hand operable pump

Details Hand operable pump Hand operable pump

2005-05-17

2005-05-17

Freay, Charles G. (Department: 3746)

Pumps

Expansible chamber type

Valved piston

C417S063000, C417S555100

Reexamination Certificate

active

06893232

ABSTRACT:
An easily operable telescopic pump includes a first cylinder, a second cylinder, a grip and a nozzle. The second cylinder is inserted in the first cylinder. The grip is communicated with the second cylinder. The nozzle is communicated with the grip. A pipe extends through the grip and includes an end inserted in the second cylinder and an opposite end connected with the nozzle.

REFERENCES:
patent: 2649335 (1953-08-01), Funke
patent: 3003429 (1961-10-01), Petrusewicz et al.
patent: 5443370 (1995-08-01), Wang
patent: 5489197 (1996-02-01), Tsai
patent: 6017201 (2000-01-01), Yang
patent: 6196807 (2001-03-01), Wu
patent: 6716006 (2004-04-01), Yang

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