Title:
VARIATORS
Document Type and Number:
WIPO Patent Application WO/2016/067058
Kind Code:
A8
Abstract:
A (toroidal) variator for transmitting rotary motion between a rotary variator input and a rotary variator output is provided. The variator comprises a first biasing device (474) and a second biasing device (488) and are defined by a first, input gain (G
i
) and a second, output gain (G
o
) wherein the first, input gain (G
i
) and the second, output gain (G
o
) are calculated according to the following formulas: G
i
= F
eli
/ T
i
where G
i
is theoutput gain, T
i
is theoutput torque and F
eli
is the first biasing force; G
o
= F
elo
/ T
o
where G
o
is the input gain, T
o
is the applied input torque and F
elo
is the second biasing force. According to the invention, the first, input gain and second, output gain are different, which, at least in specific variator applications, optimises the traction coefficient.
Inventors:
FULLER JOHN (GB)
BURTT DAVID (GB)
HOLMES MICHAEL (GB)
BURTT DAVID (GB)
HOLMES MICHAEL (GB)
Application Number:
PCT/GB2015/053299
Publication Date:
June 23, 2016
Filing Date:
November 02, 2015
Export Citation:
Assignee:
TOROTRAK DEV LTD (GB)
International Classes:
F16H61/664; F16H15/38
Attorney, Agent or Firm:
MORBIDINI, Marco (45 Grosvenor RoadSt.Albans, Hertfordshire AL1 3AW, GB)
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