Land vehicles – Wheeled – Occupant propelled type
Patent
1991-12-12
1994-06-07
Bertsch, Richard A.
Land vehicles
Wheeled
Occupant propelled type
417 63, 417231, 417233, 417537, 152416, 24528, B62J 1102
Patent
active
053183177
ABSTRACT:
An air pump for use with a chain-driven bicycle having a freewheel. The pump assembly comprises a pair of opposed cylinders and a double-ended piston rod mounted in a housing. The piston rod has a bearing slot which engages a crank pin on a crankshaft which is driven by a sprocket. Rotation of the sprocket reciprocates the double-ended piston rod in the cylinders. A hook-shaped extension of the housing fits over the top of the chain stay of the bicycle, and a vertically movable clamping member provided with a ratchet mechanism abuts the underside of the chain stay; a lever operated cam clamps the chain stay intermediate the hook portion and the clamping member. The lower run of the bicycle drive chain engages the drive sprocket of the pump assembly. Reverse rotation of the bicycle's crank assembly causes the conventional freewheel to also rotate in a reverse direction without rotating the wheel of the bicycle. The resulting movement of the chain over the drive sprocket of the pump rotates the drive sprocket, which reciprocates the double-ended piston rod in the cylinders and pumps air to an article to be inflated.
REFERENCES:
patent: 540252 (1895-06-01), Harding
patent: 559418 (1896-05-01), Spencer
patent: 596223 (1897-12-01), Wickersham et al.
patent: 624417 (1899-01-01), Wickersham et al.
patent: 652997 (1900-07-01), Crandall
patent: 681565 (1901-08-01), McCune et al.
patent: 744483 (1903-11-01), Carlberg
patent: 797447 (1905-08-01), Merry
patent: 868658 (1907-10-01), Hamacher
patent: 1169705 (1916-01-01), Wilkes
patent: 1349225 (1920-08-01), Rosenblum
patent: 1455646 (1923-05-01), Millard
patent: 1760346 (1930-05-01), Correa
patent: 2472647 (1949-06-01), Covins
patent: 2662261 (1953-12-01), Mikoski
patent: 3053194 (1962-09-01), Webster
patent: 3233554 (1966-02-01), Huber et al.
patent: 3283997 (1966-11-01), Bambenek et al.
patent: 3451276 (1969-06-01), Wadlow et al.
patent: 3510923 (1970-05-01), Blake
patent: 3517652 (1970-06-01), Albertson
patent: 4137020 (1979-01-01), Ito et al.
patent: 4462768 (1984-07-01), Westmoreland
patent: 4677328 (1987-06-01), Kumakura
Bertsch Richard A.
Kocharov Michael I.
Velo Research, Inc.
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