Motor vehicles – Special wheel base – Rider propulsion with additional source of power – e.g.,...
Patent
1978-04-11
1980-04-01
Silverstrim, John P.
Motor vehicles
Special wheel base
Rider propulsion with additional source of power, e.g.,...
74194, 74207, 180221, 180 74, B62K 1104
Patent
active
041957059
ABSTRACT:
A drive for a road wheel mounted in the frame of a motor-assisted bicycle comprises a drive housing pivotal transversely to the plane of the wheel and connected to the frame by an interposed elastomeric sleeve deformable by the pivotal movement of the drive housing. An engine in the housing has a crankshaft and a drive shaft is non-rotatably connected to the crankshaft. A bevel wheel is non-rotatably mounted on the drive shaft and a pressure roller is aligned with the bevel wheel in the axial direction of the road wheel, the bevel wheel and pressure roller being engageable with the road wheel on opposite sides thereof. A spring arm secured to the housing and carrying the pressure roller normally urges the bevel wheel and pressure roller into engagement with the respective sides of the road wheel. A rotatable spreading cam pivoted to the housing and disposed between the housing and the spring arm is manually operable to move the spring arm away from the housing so as to move the roller out of engagement with the road wheel and a stop on the frame engages the spring arm on further manual operation of the cam to retain the spring arm to perform the pivotal movement of the housing under the elastic deformation of the sleeve to disengage the bevel wheel from the road wheel.
REFERENCES:
patent: 1259989 (1918-03-01), Hult
patent: 3891044 (1975-06-01), Tiede
Kelman Kurt
Silverstrim John P.
Steyr-Daimler-Puch Aktiengesellschaft
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