192 clutches and power-stop control – Clutches – Fluent material
Patent
1977-06-21
1979-06-12
Herrmann, Allan D.
192 clutches and power-stop control
Clutches
Fluent material
192113B, F16D 3500
Patent
active
041577485
ABSTRACT:
A transmission apparatus utilizes the shear resistance in the laminar flow of hydraulic fluid in the active gap between the opposing surfaces of the transmission plates in order to control the transmission of torque. The apparatus comprises at least one plate having a perforated active surface and provided with at least one flowpath away from the active surface, the flowpath connecting the perforations with the non-active space around the perforated plate, and at least one corresponding plate having a non-perforated active surface spaced apart from the active surface of the perforated plate by an active gap. The active gap, the perforations, and the flowpath are arranged and dimensioned such that the resistance to radial flow in the gap is several times the resistance to flow through the perforations and the flowpath in order to create and maintain in the gap at a tangential laminar flow without an effective radial flow component. The apparatus also has means for supplying and withdrawing fluid in the gap such that the transmitted torque can be externally controlled by influencing the amount of hydraulic fluid present.
REFERENCES:
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patent: 923565 (1909-06-01), Newcomb
patent: 2852118 (1958-09-01), Lacroix, Jr. et al.
patent: 3404832 (1968-10-01), Sutaruk
patent: 3458020 (1969-07-01), Lutz
patent: 3498431 (1970-03-01), Sutaruk
patent: 3534842 (1970-10-01), Davison, Jr.
patent: 3651909 (1972-03-01), Zautaszwili
patent: 3688884 (1972-09-01), Perrin et al.
Bogey B.V.
Herrmann Allan D.
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