Contracting structure on bicycle seats

Details Contracting structure on bicycle seats Contracting structure on bicycle seats

1997-03-25

1998-05-12

Nelson, Jr., Milton

Chairs and seats

Straddle seat

403384, 403325, B60N 238, B25G 336, B25G 318

Patent

active

057496226

ABSTRACT:
A contracting structure for assembling a bicycle seat conveniently and fast, wherein, on a post pipe for the seat is a C shaped lock head in which a screw is provided to control contracting amount, two semi-circular annuli embedded in the inner wall of the lock head hold therebetween a clamper seat on which are two clamping blocks; the blocks have inward and outward bevelled surfaces thereon, the former are subjected to contraction of the annuli, the latter at the two sides of the lock head can be pressed in the normal direction thereto by the seat frames at the bottom of the seat, a spring is received in both blocks having two arciform clamping grooves formed on the outer lateral sides thereof and corresponding respectively by position to two rod grooves on the clamper seat to thereby form two clamping mouths openable and closable elastically to clamp the seat frames and mount the seat.

REFERENCES:
patent: 431573 (1890-07-01), Garford
patent: 597055 (1898-01-01), Devore
patent: 4502811 (1985-03-01), Patriarca
patent: 4995753 (1991-02-01), Shook
patent: 5190346 (1993-03-01), Ringle

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