Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1988-09-16
1989-09-19
Diehl, Dwight G.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74781B, 192 6A, F16H 344
Patent
active
RE0330582
ABSTRACT:
The invention relates to a multi-speed hub for bicycles or the like having a gear shift system for more than three gears, wherein the hub transmission comprises a single planetary transmission with axially fixed planet carriers with stepped plant gears and with two different sun wheels, control of the hub transmission taking place coaxially through the hub shaft, there being for the gear shift elements in the hub a single control system which has to be operated from only one side of the hub shaft, the hub further comprising an arrangement of concentric separate sleeve-like components which are in functional sequence subject to the action of a shift head guided in the hub shaft and subject to spring tension. Such a construction provides a multi-speed hub which has an unusually large number of selectable gear stages, all of which can be operated from one axial side of the hub and by a single shift device and in functional sequence, actuation of this multi-speed hub being simple and functionally reliable. Furthermore, such a multispeed hub with more than three gear stages also comprises a back-pedalling brake device.
REFERENCES:
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patent: 3257868 (1966-06-01), Preece
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patent: 3828627 (1974-08-01), Schwerdhofer
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patent: 4065984 (1978-01-01), Nakajima
patent: 4147244 (1979-04-01), Segawa et al.
Planetengetriebe, Schaltsysteme und Freilante in Fahvrad-und Motorradnabe, pp. 374-382, 4/1965.
Bergles Eduard
Steuer Werner
Diehl Dwight G.
Fichtel & Sachs AG
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