Flywheel device with a seal for a grease chamber

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Fluid coupling

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Details

277135, 464 66, 192212, F16D 380

Patent

active

059116285

ABSTRACT:
A flywheel device has a first flywheel mass that is drivable and rotates around a rotational axis and a second flywheel mass that can be deflected relative to the first at least by a limited rotational angle. The second flywheel mass is drive-connected to the first flywheel mass by a torsional damping device. At least one flywheel mass has a grease chamber which at least partially accommodates the torsional damping device and is equipped with at least one seal against the escape of viscous medium. A first sealing part of the seal is connected to one of the flywheel masses and a second sealing part of the seal is connected to the other flywheel mass. The second sealing part is arranged in a radially offset manner relative to the first sealing part and has at least two fixed arms extending from an annual base in the direction of the first sealing part. Each of the arms is arranged at a predeterminable distance from the side of the first sealing part that faces it and forms, together with the other respective fixed arm and the base, an annular channel holding a highly-viscous medium. The first sealing part is submerged, at least in its region radially adjacent to the second sealing part, in the highly-viscous medium.

REFERENCES:
patent: 2678835 (1954-05-01), Clark, Jr.
patent: 4103902 (1978-08-01), Steiner et al.
patent: 4300457 (1981-11-01), Moore
patent: 4363777 (1982-12-01), Cornu et al.
patent: 4739866 (1988-04-01), Reik et al.
patent: 4813524 (1989-03-01), Reik
patent: 4947700 (1990-08-01), Kern et al.
patent: 5239750 (1993-08-01), Wright
patent: 5551928 (1996-09-01), Sudau

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