Brakes – Internal-resistance motion retarder – Using a rotary-type fluid damper
Patent
1992-03-10
1993-12-14
Oberleitner, Robert J.
Brakes
Internal-resistance motion retarder
Using a rotary-type fluid damper
1883225, 16 82, 192 58B, 192112, F16F 912, F16D 5700
Patent
active
052693970
ABSTRACT:
A rotary damper includes a dish-shaped housing having a depression surrounded by a cylindrical wall, a viscous fluid contained in the depression, a damping rotor accommodated in the viscous fluid, and a cap covering the dish-shaped housing with a shaft of the damping rotor projecting through a central hole thereof. The cylindrical wall is provided at the base of its external periphery with a sloped annular portion of downward increasing diameter. A lower edge portion of a circular wall of the cap is contacted with the slope of the sloped annular portion during welding of the cap to the dish-shaped housing.
REFERENCES:
patent: 4527675 (1985-07-01), Omata et al.
patent: 4796733 (1989-01-01), Nakayama
Kawamoto Masanobu
Tokahashi Norio
Yamaguchi Keiji
Ballato Josie A.
Nifco Inc.
Oberleitner Robert J.
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