Combination seat post and air pump for bicycle

Details Combination seat post and air pump for bicycle Combination seat post and air pump for bicycle

1988-05-27

1989-06-27

Marmor, Charles A.

Land vehicles

Wheeled

Occupant propelled type

152415, B65B 304

Patent

active

048422908

ABSTRACT:
An air pump for bicycles in which, when the air pump is not in use, is stored in the frame of the bicycle and serves as the post for the seat of the bicycle. The air pump has an outer, tubular post having structure on the upper end thereof for removably mounting a bicycle seat. The post is removably mounted in a bicycle frame. A tube extends partially into the post and carries a diaphragm on its inner end. The diaphragm is engageable with the inner surface of the post and compresses air in advance of the diaphragm when the diaphragm moves toward the upper end of the post. A check valve near the diaphragm permits only a one-way flow of air, namely in the direction through the tube and away from the upper end of the post. A lower member on the outer end of the tube allows a flexible hose to be coupled to the tube so that compressed air from the tube can be directed into the valve stem of a device to be inflated.

REFERENCES:
patent: 527607 (1894-10-01), Jeffery
patent: 657645 (1900-09-01), Wolbrecht
patent: 702976 (1902-06-01), Lymburner
patent: 730074 (1903-06-01), Allen
patent: 1270661 (1918-06-01), Reed
patent: 4712592 (1987-12-01), Brown

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