Toroidal continuously variable transmission

Details Toroidal continuously variable transmission Toroidal continuously variable transmission

1999-06-18

2000-12-05

Estremsky, Sherry

Friction gear transmission systems or components

Fluid control

Of toroidal transmission

476 42, 476 67, F16H 6130, F16H 1538

Patent

active

061559539

ABSTRACT:
The upper and lower ends of plural trunnions (46) of a toroidal continuously variable transmission are joined by links (50, 52). A trunnion shaft (70) is joined to the lower end of the trunnion (46). A boss (78A) of a piston (78) is attached to the outer circumference of the trunnion shaft (70), and tightened toward the trunnion (46) by a nut (82) which screws into the trunnion shaft (70). The upper end of the boss is formed as a plane surface, and a supporting surface (76E) of a supporting member (76) which supports this plane surface on the trunnion (46) is formed as a spherical surface. When the spherical surface and plane surface under a relative displacement, a bending load which acts on the trunnion (46) is prevented from acting on the piston (78), and wear of the piston (78) is suppressed.

REFERENCES:
patent: 5136891 (1992-08-01), Nakano
patent: 5423727 (1995-06-01), Fellows
patent: 6030309 (2000-02-01), Nakano

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