Title:
CONTINUOUS VARIATION TRANSMISSION DEVICE WITH ADJUSTMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/111131
Kind Code:
A9
Abstract:
A continuous variation transmission device (1) for a motorcycle with two/three/four- wheels comprises a drive pulley (4) provided with a movable bushing (9), a fixed bushing (11) and a cam system (95,111;97,113) between the fixed bushing (11) and the movable bushing (9). The cam system has a driven cam portion (95) of the movable bushing (9) and a drive cam portion (111) of the fixed bushing (11). The driven cam portion (95) comprises at least one recess (99) and the drive cam portion (111) comprises at least one tooth (115) or vice versa. The recess (99) and the tooth (115) have respective sides (99a, 99b; 115a, 115b) which form a shape coupling with each other to guide the relative movement between said movable bushing (9) and said fixed bushing (11).
Inventors:
NESTI PAOLO (IT)
MARIOTTI WALTER (IT)
FRESCHI GIACOMO (IT)
MARIOTTI WALTER (IT)
FRESCHI GIACOMO (IT)
Application Number:
PCT/IB2018/059576
Publication Date:
August 15, 2019
Filing Date:
December 03, 2018
Export Citation:
Assignee:
PIAGGIO & C SPA (IT)
International Classes:
F16H61/662; F16H9/18; F16H55/56; F16H63/06
Attorney, Agent or Firm:
PULIERI, Gianluca Antonio et al. (IT)
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