Oil damper

Details Oil damper Oil damper

1987-08-03

1989-01-10

Halvosa, George E. A.

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

188 827, 188290, 192 58B, F16D 5702

Patent

active

047967331

ABSTRACT:
An oil damper is disclosed which comprises a cylindrical case open at one end and having a first engagement section formed upon the inner periphery thereof, an intermediate rotor having an inner cylinder and an outer cylinder, these cylinders being coaxial with respect to each other and defining an annular space open at one end, the outer periphery of the outer cylinder being provided with a second engagement section to be engaged with the first engagement section, the intermediate rotor being accommodated within the cylindrical case for rotation in only one direction, a cylindrical shaft rotor rotatably accommodated within the annular space, and viscous oil sealed within the annular space.

REFERENCES:
patent: 1228215 (1917-05-01), Junkers
patent: 1291871 (1919-01-01), Hein
patent: 3685621 (1972-08-01), Gulick et al.
patent: 4346749 (1982-08-01), Singletary et al.
patent: 4352304 (1982-10-01), Warner
patent: 4513473 (1985-04-01), Omata
patent: 4574423 (1986-03-01), Ito et al.
patent: 4653616 (1987-03-01), Mizusawa
patent: 4694530 (1987-09-01), Foggini

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