1978-01-09
1980-09-30
Lazarus, Ira S.
64 27L, F16D 380
Patent
active
042248078
ABSTRACT:
An elastic coupling comprises an outer ring and a hub. A plurality of radially extending stacks of leaf springs are attached to the outer ring and engage axially extending recesses in the hub. Each leaf spring comprises a set of radially extending axially adjacent coplanar strips in arrangement, namely of one or more central strips and axially outer strips on both sides of the central strips and having smaller width than the central strips. A continuous thin and flexible sheet metal plate covers the various strips and closes the gaps therebetween. Intermediate pieces are provided between the leaf springs along the inner surface of the outer ring. The cavity defined by outer ring, hub and cover plates on each end of the outer ring is sealed and filled with damping liquid. Sealing ledges are provided between the intermediate pieces and the hub to subdivide the cavity into chambers which are, in turn, subdivided by the leaf springs. Connecting passages with restrictors interconnect the chambers formed. The surfaces of the intermediate pieces facing the leaf springs are convex to support the leaf springs upon application of excessive torque. The stacks of leaf springs consist of long and short strips, only the long ones engaging the recesses in the hub. Pistons guided in the intermediate pieces abut short strips of adjacent leaf spring arrangements to make sure that all strips contribute to the torque transmission with both directions of rotations. Various modes of mounting the leaf springs are disclosed.
REFERENCES:
patent: B509043 (1976-02-01), Geislinger
patent: 1359848 (1920-11-01), Techel
patent: 1422929 (1922-07-01), Cooke
patent: 1843682 (1932-02-01), Kinnean
patent: 1852755 (1932-04-01), Peo
patent: 1865668 (1932-07-01), Beecher
patent: 2266872 (1941-12-01), Kuhns
patent: 2307187 (1943-01-01), Anderson
patent: 2363257 (1944-11-01), Matteucci
patent: 2972241 (1961-02-01), Hockforth
patent: 4067207 (1978-01-01), Bohm
patent: 4104891 (1978-08-01), Geislinger
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