Spring devices – Vehicle – Comprising compressible fluid
Patent
1974-12-30
1977-10-11
Marbert, James B.
Spring devices
Vehicle
Comprising compressible fluid
267153, B60G 1122
Patent
active
040531481
ABSTRACT:
A rubber spring for vehicle suspensions of generally cylindrical form, and with smooth, uninterrupted external side faces, and having an axial cavity of divergent/convergent form. The cavity has a small cross-sectional area at the end faces of the spring, and has a maximum cross-sectional area preferably at two transverse planes spaced on opposite sides on the axial center of the spring. The cross-sectional area of the rubber is minimized at these two transverse planes, and is maximized at the central transverse plane which corresponds to the minimum diameter of the cavity. As used in a preferred suspension, the spring is held within a metal cylinder, which serves both to restrict lateral expansion so increasing the spring rate at heavy loads, and also applies frictional damping forces to the sides of the rubber spring.
REFERENCES:
patent: 3144247 (1964-08-01), Szonn et al.
patent: 3161420 (1964-12-01), Rix
patent: 3212460 (1965-10-01), Peras
patent: 3409284 (1968-11-01), Rix
patent: 3447814 (1969-06-01), Siber et al.
patent: 3679166 (1972-07-01), Sturhan
patent: 3858925 (1975-01-01), Gaydecki
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