Planetary gear transmission systems or components – Differential planetary gearing – Spur gear differential
Patent
1993-07-16
1995-10-17
Lorence, Richard M.
Planetary gear transmission systems or components
Differential planetary gearing
Spur gear differential
475 89, F16H 4810, F16H 4826
Patent
active
054585473
ABSTRACT:
A differential apparatus comprises: a differential casing; a first side gear rotatably arranged within the differential casing and connected to the first shaft; a second side gear rotatably arranged within the differential casing in parallel to the first side gear and connected to the second shaft; at least one short pinion gear housed in a bore formed in the differential casing so as to be rotated within the bore and around the first and second side gears together with the differential casing; at least one long pinion gear housed in another bore formed in the differential casing in parallel to and in mesh with the short pinion gear so as to be rotated within the bore and around the first and second side gears together with the differential casing; and a viscous coupling. The first and second side gears are geared to each other through the short and long pinion gears so as to be rotated differentially relative to each other, when the short and long pinion gears are driven by the differential casing. The differential apparatus can generate a torque sensitive differential limiting force uniform both when a torque is transmitted to the first shaft under the condition that the second shaft is being idled and when a torque is transmitted to the second shaft under the condition that the first shaft is being idled; and a speed sensitive differential limiting force generated by the viscous coupling.
REFERENCES:
patent: 4957473 (1990-09-01), Takemura et al.
patent: 4983150 (1991-01-01), Tashiro et al.
patent: 5122102 (1992-06-01), Chludek et al.
Aiba Satoshi
Hiraishi Kenji
Ono Shuhei
Teraoka Masao
Estremsky Sherry Lynn
Lorence Richard M.
Tochigifujisangyo Kabushiki Kaisha
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