Land vehicles – Wheeled – Occupant propelled type
Patent
1996-08-20
1999-07-27
DePumpo, Daniel G.
Land vehicles
Wheeled
Occupant propelled type
280275, 280283, 297209, B62M 100
Patent
active
059277386
ABSTRACT:
A seat suspension system for a bicycle comprises an outer generally elongate hollow tube and an inner generally elongate hollow tube telescopingly received within the outer tube. Ball bearing races are provided as by metal forming in the inner and outer tubes, and ball bearings are disposed in the races. The inner tube has an inner end fitted with a bushing such that the bushing is slidingly engaged with the outer tube. A compression spring is disposed between the inner end of the inner tube and a stop pin extending through the outer tube. The bearings and bushing cooperate to permit longitudinal movement of the inner tube within the outer tube but prevent relative lateral and rotational movement of the tubes. By this construction, a seat suspension system can be constructed with standard readily available materials and without costly manufacturing procedures yet will provide a highly functional and reliable product.
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