B - Operations – Transporting – 62 – K
Patent
B - Operations, Transporting
62
K
280/39
B62K 21/00 (2006.01) B62K 21/18 (2006.01) F16B 2/14 (2006.01) F16B 7/14 (2006.01)
Patent
CA 1098927
INVENTOR: OSKAR PLETSCHER INVENTION: APPARATUS FOR THE RELEASABLE FORCE-LOCKING OF TWO TELESCOPIC TUBES, ESPECIALLY FOR CLAMPING THE STEERING HOUSING TUBE IN THE STEERING FORK TUBE OF A BICYCLE ABSTRACT OF THE DISCLOSURE An apparatus for the releasable, force-locking connection of two telescopically arranged tubes, especially for clamping the steering housing tube in the steering fork tube of a bicycle or the like, comprising an expanding cone axially displaceable with- in the tube defining an inner tube by means of a threaded spindle. In order to avoid, during clamping, deformation of the inner tube and thus frictional connection between both tubes along only a circular engagement line at the lower end of the inner tube and to eliminate the effect of the unavoidable play between the outer diameter of the inner tube and the inner diameter of the outer tube, the outer surface of the expanding cone bears against wedges The latter are each arranged in a respective guide slot formed at the inner tube, extending parallel to the lengthwise axis of the tubes and having a closed contour. The wedges can be outwardly displaced by means of the expanding cone, and the longitudinal central plane of at least one of the guide slots and its wedge is arranged in offset relationship with regard to the axis of the tubes. Owing to the frictional connection which is distributed in axial direction it is possible, with this apparatus, for clamped tubes to take-up the larger bending moments of the threaded spindle with the same tightening moment and to transmit larger torque or rotational moments.
311885
Gebruder Pletscher
Gowling Lafleur Henderson Llp
LandOfFree
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