Hand-operated inflator

Details Hand-operated inflator Hand-operated inflator

2007-08-07

2007-08-07

Stashick, Anthony D. (Department: 3746)

Pumps

Expansible chamber type

Plural pumping chambers

C417S531000, C417S533000, C417S538000

Reexamination Certificate

active

11068958

ABSTRACT:
A hand-operated inflator with dual cylinder is provided. Once the cylinders are pulled out on two sides of the central block to form a line axially, and a clamp plate at mid point in between the two cylinders is turned to the transversal position to lock the cylinders in place, the inflator is set for refilling operation. The two cylinders can be folded back when the clamp plate is released, making it easy for carrying and storage with the length reduced by half. The inflator is able to inflate an object with faster rate as compared with the conventional inflators with only one air cylinder. Moreover, the central block can be attached with a pressure meter. If the measured air pressure inside the object gets excessively high, air can be safely released through an over pressure valve.

REFERENCES:
patent: 1275440 (1918-08-01), Johnson
patent: 4334839 (1982-06-01), Flagg
patent: 5443370 (1995-08-01), Wang
patent: 5533436 (1996-07-01), Chuang
patent: 6350112 (2002-02-01), Huang et al.
patent: 6935850 (2005-08-01), Huang et al.

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