Joints and connections – Axially split or separable member
Patent
1986-07-01
1988-09-20
Kundrat, Andrew V.
Joints and connections
Axially split or separable member
403290, 403373, B60B 2706
Patent
active
047721537
ABSTRACT:
This invention is related to a tightening device used for a bicycle's frame. This device includes a shell having an interior space having a pair of lugs formed thereon. A screw and a nut provides for selectively, adjustably tightening the said bracket. A tightening piece is confined and supported within each lug, each piece having a contact surface which communicates with the interior space of the bracket, the contact surface of the tightening piece is provided with a curvature being similar and complementary-shaped to that of the surface of the structural member. When the seat tube is inserted into the interior space and the nut is tightened, the said contact surface of the tightening piece tightens and contacts the surface of the tube firmly along an area being greater than a line.
REFERENCES:
patent: 1785870 (1930-12-01), Marles
patent: 2909381 (1959-10-01), Bates
patent: 3767235 (1973-10-01), Pitner
patent: 3895878 (1975-07-01), Pitner
patent: 4068965 (1978-01-01), Lichti
patent: 4269445 (1981-05-01), Gager
patent: 4361024 (1982-11-01), Haldric
Japan's Bicycle Guide, Riding the World, vol. 32, desk side edition, pp. 144-151, 1982.
Bloom Leonard
Kundrat Andrew V.
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