Brakes – Internal-resistance motion retarder – Magnetic fluid or material
Patent
1992-05-19
1995-01-31
Oberleitner, Robert J.
Brakes
Internal-resistance motion retarder
Magnetic fluid or material
248550, 248638, 318649, 318651, F16F 1503, B25H 102
Patent
active
053852176
ABSTRACT:
A vibration eliminating apparatus for eliminating vibration suspends a floor board from an installation floor. A supporting electromagnet is provided on the installation floor in order to suspend a magnetic member fixed to the floor board by a magnetic force. The magnetic member is provided with a thin magnetic pole through a non-magnetic member, and a control electromagnet having a yoke located in proximity to the thin magnetic pole is provided to control a horizontal position of the floor board. A vibration detector is provided to detect vibration of the floor board, and a vibration monitor is used to decide whether or not vibration detected by the vibration detector is within an allowable range of a machine mounted on the floor board and output an operation enable signal only when vibration is within the allowable range.
REFERENCES:
patent: 3464657 (1969-09-01), Bullard
patent: 4093931 (1978-06-01), Fenton
patent: 4351515 (1982-09-01), Yoshida
patent: 4795123 (1989-01-01), Forward et al.
patent: 5022628 (1991-06-01), Johnson et al.
Ikeda Yukio
Kanemitu Yoichi
Watanabe Katsuhide
Ebara Corporation
Oberleitner Robert J.
Rutherford Kevin D.
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