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US 6,325,386 B1Granted
Rotatable seal assembly for a bicycle hub transmission
AssigneeShimano Inc.
InventorAkihiko Shoge
Life of this patent
Estimating the term…
Abstract
A seal for a bicycle transmission includes an annular housing and an annular seal member. The housing includes a side wall defining a plurality of circumferentially disposed slots. The seal member is retained to the housing and extends radially inwardly. The seal member is formed from a resilient material, and the housing is formed from a material that is more rigid than the seal member.
Claims23
A seal for a bicycle transmission comprising:
- an annular housing including a side wall having an outer peripheral surface and an inner peripheral surface, wherein the side wall defines a plurality of circumferentially disposed slots defining a plurality of coupling tabs;
- an annular seal member formed from a resilient material, wherein the seal member is retained to the housing and extends radially inwardly;
- wherein the housing includes a coupling projection extending radially inwardly from at least one of the plurality of coupling tabs for engaging an outer surface of the bicycle transmission;
- wherein the coupling projection is axially spaced apart from the seal member;
- and
- wherein the housing is formed from a material that is more rigid than the seal member.
3 more elements
A bicycle hub comprising:
- a hub shell that rotates around a hub axis, wherein the hub shell has at least one of a hub coupling projection or a hub coupling groove on an outer peripheral surface thereof;
- an inner member disposed coaxially with the hub shell;
- a transmission for communicating a driving force to the hub shell through a plurality of transmission paths;
- and
- a seal including:
- an annular housing including a side wall having an outer peripheral surface and an inner peripheral surface, wherein the side wall has at least one of a side wall coupling projection or a side wall coupling groove engaging the at least one of the hub coupling groove or hub coupling projection, respectively, so that the housing is nonrotatably retained to the hub shell when the hub shell rotates around the hub axis;
- the side wall defines a plurality of circumferentially disposed slots;
- an annular seal member retained to the housing, extending radially inwardly and contacting the inner member;
- and
- wherein the seal member is axially spaced from the at least one of the side wall coupling projection or the side wall coupling groove.
7 more elements
A bicycle hub comprising:
- a hub shell that rotates around a hub axis, wherein the hub shell has at least one of a hub coupling projection or a hub coupling groove on an outer peripheral surface thereof;
- an inner member disposed coaxially with the hub shell;
- a transmission for communicating a driving force to the hub shell through a plurality of transmission paths;
- and
- a seal including:
- an annular housing including a side wall having an outer peripheral surface and an inner peripheral surface, wherein the side wall has at least one of a side wall coupling projection or a side wall coupling groove engaging the at least one of the hub coupling groove or hub coupling projection, respectively, so that the housing is nonrotatably retained relative to the hub shell;
- an annular seal member retained to the housing, extending radially inwardly and contacting the inner member;
- and
- wherein the seal member is axially spaced from the at least one of the side wall coupling projection or the side wall coupling groove;
- wherein the at least one of the hub coupling projection or hub coupling groove is the hub coupling groove, wherein the at least one of the side wall coupling projection or side wall coupling groove is the side wall coupling projection, wherein the side wall coupling projection is disposed on an inner peripheral surface of the side wall and engages the hub coupling groove, and wherein the side wall defines a plurality of circumferentially disposed slots extending through an end of the side wall that is coupled to the hub shell.
7 more elements
Dependencies are inferred from the claim text.