Joints and connections – Axially split or separable member
Patent
1989-05-11
1990-09-18
Kundrat, Andrew V.
Joints and connections
Axially split or separable member
403290, 403272, B60B 2706
Patent
active
049573888
ABSTRACT:
The present invention is related to a new bicycle frame tube coupling structure and, more particularly, to a tight coupling which includes a pair of solid lugs having large curved front edges fixedly connected to the wall surface of the tight coupling through a silver brazing process. When a locking bolt is inserted through the pair of lugs and screwed tight, the solid body of the two opposite lugs and the two large curved surfaces provide an increased pressure onto a fixed tube to firmly tighten a movable tube, which is contained in the fixed tube and both of which are set in the tight coupling, so that the movable tube be firmly positioned therein.
REFERENCES:
patent: 279575 (1883-06-01), Leaycraft
patent: 669389 (1901-03-01), Gundry
patent: 1709825 (1929-04-01), Austin
patent: 4469465 (1984-09-01), Andrus
patent: 4753462 (1988-06-01), Liu
patent: 4772153 (1988-09-01), Huang
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