Apparatus for rotatably fitting a fork stem in a head tube of a

Details Apparatus for rotatably fitting a fork stem in a head tube of a Apparatus for rotatably fitting a fork stem in a head tube of a

1992-10-30

1994-07-19

Focarino, Margaret A.

Land vehicles

Wheeled

Occupant propelled type

B62K 2106

Patent

active

053302206

ABSTRACT:
An apparatus for rotatably fitting a fork stem (4) in a head tube (5) of a bicycle. This apparatus has a first race element (1) fitted on the fork stem, and a second race element (2) opposed to the first race element and inserted into an annular space defined between the fork stem and the head tube. The first race element (1) defines a first contact surface (1b). A first ring element (7) defining a first rolling body supporting surface (7b) is fitted on the first race element (1). The second race element (2) defines a second contact surface (2b). A second ring element (8) defining a second rolling body supporting surface (8b) is fitted on the second race element (2). The first contact surface (1b) is shaped to have a component of reaction force acting radially inwardly of the fork stem from the first ring element to the first race element when rolling bodies (6) are clamped between the first supporting surface and second supporting surface. The second contact surface (2b) is shaped to have a component of reaction force acting radially outwardly of the head tube from the second ring element to the second race element when the rolling bodies (6) are clamped between the second supporting surface and second supporting surface.

REFERENCES:
patent: 3705733 (1972-12-01), Koyama et al.
patent: 4189167 (1980-02-01), Dubois
patent: 4303257 (1981-12-01), Perotti et al.
patent: 4429891 (1984-02-01), Hon
patent: 4445703 (1984-05-01), Tange
patent: 4466629 (1984-08-01), Sinyard
patent: 4545594 (1985-10-01), Cabeza
patent: 4593924 (1986-06-01), Cabeza
patent: 5163758 (1992-11-01), Chi

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