Adjustable viscous shear coupling

Details Adjustable viscous shear coupling Adjustable viscous shear coupling

1992-02-27

1993-04-20

Lorence, Richard M.

192 clutches and power-stop control

Clutches

Fluent material

192 58B, F16D 3500

Patent

active

052034399

ABSTRACT:
An adjustable viscous shear coupling comprises a housing containing a viscous fluid therein, an inner part such as a shaft extending into the housing, a set of outer disks non-rotatably connected to the housing, a set of inner disks non-rotatably connected to the inner part, the inner disks and the outer disks being interleaved so that adjacent disks are separated by a gap, and an axially movable piston which acts on the disks to adjust the width of the gaps. The adjustable viscous shear coupling is constructed so that sealing intervals are formed between the outer disks and the inner part and between the inner disks and the housing so that the overflow of viscous fluid from one gap to another is greatly inhibited. In a preferred embodiment, the adjustable viscous shear coupling includes inner choke elements disposed between the outer disks and the inner part, and outer choke elements disposed between the inner disks and the housing, the choke elements creating the sealing intervals.

REFERENCES:
patent: 4844219 (1989-07-01), Stockmar
patent: 4942951 (1990-07-01), Kriebernegg et al.
patent: 5090534 (1992-02-01), Horst

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