Earthquake isolation floor

Details Earthquake isolation floor Earthquake isolation floor

1980-10-23

1983-09-06

Sakran, Victor N.

Supports

Including energy absorbing means, e.g., fluid or friction...

248559, 248638, 52167, E04H 902, E02D 2734

Patent

active

044024835

ABSTRACT:
An earthquake isolation floor comprises a horizontal plate-like support frame having a generally circular or polygonal configuration, a support frame having a horizontal surface with a similar configuration to that of the fundamental frame in a plan view, but of relatively smaller dimensions, a number of horizontal springs disposed radially between the fundamental and support frames with each of the springs being kept in a preset state, and a number of horizontal dampers disposed radially between the fundamental and the support frames, whereby machinery and tools, etc. to be protected against vibration such as caused by an earthquake are adapted to be mounted on the support frame.

REFERENCES:
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patent: 3250508 (1966-05-01), Kfoury et al.
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patent: 3464657 (1969-09-01), Bullard
patent: 3748800 (1973-07-01), Glicksberg
patent: 3977140 (1976-08-01), Matsudaira et al.
patent: 4040590 (1977-08-01), Baratoff
patent: 4101102 (1978-07-01), Lloyd
patent: 4223762 (1980-09-01), Gertal
patent: 4226677 (1980-10-01), Saito et al.
patent: 4240141 (1980-12-01), Vasiliev et al.

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