Pumps – Ambulant – body supported – or with carrying handle
Patent
1996-06-27
1997-08-12
Koczo, Michael
Pumps
Ambulant, body supported, or with carrying handle
417437, 417553, 417569, F04B 914
Patent
active
056558902
ABSTRACT:
A toy pump device includes a tube in which a piston rod is slidably received, a piston connected to an end of the piston rod, the piston having a tubular portion extending therefrom with a first slot defined therein and a seal slidably mounted to the tubular portion, the tube having a protrusion extending therefrom so as to have a head mounted thereto which has a hollow tube, a member slidably received between the head and the protrusion wherein an inner tube extends from an inner periphery of the head and a second slot defined in the inner tube such that when pushing the piston rod, air enters into the hollow tube via a top hole defined in the end having the head mounted thereto and the second slot to inflate a balloon mounted to the hollow tube, and when pulling the piston rod, the member closes the top hole such that the pressurized air in the balloon is avoided from leaking.
REFERENCES:
patent: 1263299 (1918-04-01), Wemhoener
patent: 5476372 (1995-12-01), Yang
patent: 5533879 (1996-07-01), Chen
Baxley Esq. Charles E.
Koczo Michael
McAndrews, Jr. Roland G.
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