Expander for a seat post inserted in a bicycle frame tube

Details Expander for a seat post inserted in a bicycle frame tube Expander for a seat post inserted in a bicycle frame tube

1988-12-27

1989-07-25

Kundrat, Andrew V.

Joints and connections

Articulated members

Lockable at fixed position

403290, 297195, F16B 710

Patent

active

048507334

ABSTRACT:
An expander for a bicycle seat support post inserted into a tubular socket of the bicycle frame. The post has an expandable collar which is expanded by means of a wedge-like expanding member which projects from the collar and which is moved axially thereinto by means of a tension link. Movement of the link to pull the wedge-like member farther into the collar is accomplished by a screw angularly supported on the post at an angle of less than ninety degrees to its axis.

REFERENCES:
patent: 624232 (1899-05-01), Marty, Jr.
patent: 661620 (1900-11-01), Rumbarger
patent: 693159 (1902-02-01), Rumbarger
patent: 1037287 (1912-09-01), Mesinger
patent: 1045999 (1912-12-01), Mesinger
patent: 2186483 (1940-01-01), Guidetti

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