Spring devices – Vehicle – Bolster
Patent
1980-06-16
1982-09-28
Halvosa, George E. A.
Spring devices
Vehicle
Bolster
188267, 188380, 248562, 267136, F16F 1300, F16F 1503
Patent
active
043515150
ABSTRACT:
A feedback control type shock absorbing suspension system is inserted between a body including a vibration source and a foundation for suspension of the body. The absorbing system includes a suspending spring mechanism. A sensor mechanism detects velocity of relative movement between the body and the foundation. A cylinder-piston mechanism includes a cylinder connected to one of the body and the foundation and a piston connected to the other of the body and the foundation. Magnetic fluid or powder is held between the inner wall of the cylinder and the outer wall of the piston. An exciting coil generates magnetic flux for magnetizing the magnetic fluid or powder. An electric circuit applies to the exciting coil a control voltage which corresponds to the detected value of the sensor mechanism. The vibration-damping force between the cylinder and the piston is controlled by magnetizing the magnetic fluid or powder.
REFERENCES:
patent: 2973969 (1961-03-01), Thall
patent: 3059915 (1962-10-01), Kemelhor
patent: 3084009 (1963-04-01), Heym
patent: 3243013 (1966-03-01), Molin et al.
patent: 3509742 (1970-05-01), Bauer
patent: 3840097 (1974-10-01), Holley
patent: 4093177 (1978-06-01), Morris
patent: 4127835 (1978-11-01), Knutson
patent: 4131866 (1978-12-01), Torr
Halvosa George E. A.
Toyota Jidosha Kogyo Kabushiki Kaisha
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