Patent ID: 6244985
Filing Date: 2001-06-12
Classification: F16H

Abstract:
An infinitely variable toroidal drive having:a housing (1);an input shaft (3);two input discs (5, 15) with toroidal inner surfaces disposed co-axially relative to said input shaft;a torque shaft (34) disposed co-axially relative to said input shaft for torque transmission;two output discs (6, 16) with toroidal inner surfaces connected for torque transmission and disposed coaxially relative to said input shaft;wherein the input discs and the output discs together form a pair of inputs to the output discs each defining a toroidal cavity with the output discs disposed adjacent one another;a plurality of friction wheels (11, 21) having axes which are pivotally disposed between the toroidal surfaces of said pairs of input discs and said output discs for transmitting a torque from each input disc to a corresponding output disc;a tiltable carrier (12, 22) for each friction wheel (11, 21) to pivot the axes of the friction wheels;a pressure system (4) which interacts with one input disc (15) to bias said one input disc (15) toward said output discs and the other input disc (5);First and second gears (8, 9), the first gear (9) is connected with an output shaft (10) and the second gear (8) is located between said output discs and receives from said output discs output torque to be transmitted;a first and a second bearing support means (7, 31) said first bearing support means (7) supports a first bearing (24) and said second gear (8) rotates on the first bearing (24) and is connected for torque transmission received from said output discs, and one end of said output shaft (10) is supported via a second bearing (32) supported by said second bearing support means (31);a holding frame (2), which has an upper frame clamp (28) and a lower frame clamp (29), is fastened to said transmission housing (1);said first bearing support means (7) is cup-shaped and connects said upper frame clamp (28) with said lower frame clamp (29);said lower frame clamp (29) has a recess (45) which partially houses the first gear (9); andsaid second bearing (32) that supports one end of said output shaft is situated in said second bearing support means (31).