Bearings – Rotary bearing – Plain bearing
Patent
1986-09-04
1987-06-30
Levy, Stuart S.
Bearings
Rotary bearing
Plain bearing
384124, 384125, 384620, 416134A, B64C 2738, F16C 2706, F16C 2707
Patent
active
046766693
ABSTRACT:
The tiltwise stiffness of an axially-lobed, nearly-spherical elastomeric joint is made uniform at all azimuths by contouring the axial height of the elastomer or by reducing the thickness or durometer of the elastomer at azimuths where the joint otherwise would be tiltwise stiffer, such as at the lobes. The improvement is useful in the application of the joint to a gimbal-like rotor system.
REFERENCES:
patent: 1488740 (1924-04-01), Dobbins
patent: 2146764 (1939-02-01), Ricefield
patent: 2363469 (1944-11-01), Goldschmidt
patent: 3504902 (1970-04-01), Irwin
patent: 3524332 (1970-08-01), Callies
patent: 4012923 (1977-03-01), Lundgren
patent: 4142833 (1979-03-01), Rybicki et al.
patent: 4208889 (1980-06-01), Peterson
patent: 4256354 (1981-03-01), Peterson
patent: 4323332 (1982-04-01), Frandenburgh
Lastoflex Bearing Design Guide, Revision A, Mar. 1, 1979, Lord Corporation, Figure 8.
"The Sikorsky Elastomeric Rotor", Robert Rybicki, Annual National Forum of the American Helicoptor Society, 5/79.
Byrnes Francis E.
Ferris Donald L.
Olsen Eric G.
Levy Stuart S.
Linden Gerald E.
Sohacki Lynn M.
United Technologies Corporation
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