Hand air pump for different types of valves

Details Hand air pump for different types of valves Hand air pump for different types of valves

1996-06-17

1997-04-29

Gluck, Richard E.

Pumps

Changeable by assembly or disassembly

417437, F04B 3910

Patent

active

056242425

ABSTRACT:
A hand air pump includes a cylinder having a chamber defined therein, a piston slidably received in the chamber and manually operable at a first end of the cylinder, and a spindle projecting outwardly from a second end of the cylinder and having a first air passage extending therethrough along a longitudinal direction thereof and having a first end in fluid communication with the chamber. The spindle further includes at least one annular groove defined in a mediate portion of an outer periphery thereof, a push pin formed on the mediate portion of the outer periphery thereof, and a second air passage extending therethrough along a diametrical direction thereof and having two ends in fluid communication with the annular groove and a mediate portion in fluid communication with a second end of the first air passage. A head portion includes a first compartment defined in a mediate portion thereof for fittingly and sealingly receiving the spindle and a second compartment for receiving a valve of a bicycle tire to be inflated and in fluid communication with the annular groove. A positioning member is provided for securing the spindle in an angular position relative to the head portion in response to the type of the valve of the bicycle tire to be inflated.

REFERENCES:
patent: 5299917 (1994-04-01), Schultz
patent: 5443370 (1995-08-01), Wang
patent: 5551848 (1996-09-01), Chuang et al.

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