Seismic isolator and method for strengthening structures against

Brakes – Internal-resistance motion retarder – Relative speed of thrust member or fluid flow

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

521678, 521676, 188318, E04H 902, F16F 500

Patent

active

054621410

ABSTRACT:
A seismic shock isolator and method of strengthening structures against seismic shock. The shock isolator includes a cylinder having a damping chamber and an accumulator chamber and a piston movable into the damping chamber. The damping chamber can contain compressible liquid or incompressible liquid. The piston has a damping head and a first control orifice, and the accumulator chamber is separated from the damping chamber by a wall having a second control orifice having a higher exponent than the first control orifice. Movement of the piston into the damping chamber creates a combination of damping and stiffening having a spring component. When the isolator has compressible liquid therein, the spring and stiffening is produced by a compression of the liquid. When the isolator contains an incompressible liquid, the stiffening and spring component are obtained by a yielding of a column which movably supports the wall which divides the damping chamber from the accumulator chamber. The method protects the structure against damage due to seismic forces having a band of frequencies, and it includes the placement of a passive restraining seismic isolator of the above type in the structure and applying a combination of hydraulic damping and frequency dependent stiffening with a spring component to the structure in response to the structure being subjected to seismic forces.

REFERENCES:
patent: 2909368 (1959-10-01), Taylor
patent: 3115003 (1963-12-01), Taylor
patent: 3164381 (1965-01-01), Tuczek
patent: 3256005 (1966-06-01), Taylor
patent: 3303856 (1967-02-01), Taylor
patent: 3418768 (1968-12-01), Cardan
patent: 3618928 (1971-11-01), Taylor
patent: 3722640 (1973-03-01), Taylor
patent: 3947004 (1976-03-01), Taylor
patent: 4150819 (1979-04-01), Taylor
patent: 4307874 (1981-12-01), Reuschenbach et al.
patent: 4506869 (1985-03-01), Masclet et al.
patent: 4513833 (1985-04-01), Sheldon
patent: 4532856 (1985-08-01), Taylor
patent: 4548041 (1985-10-01), Taylor
patent: 4591033 (1986-05-01), Taylor
patent: 4638895 (1987-01-01), Taylor
patent: 4702123 (1987-10-01), Hirao et al.
patent: 4768627 (1988-09-01), Taylor
patent: 4815574 (1989-03-01), Taylor
patent: 4817766 (1989-04-01), Nilsson
patent: 4867286 (1989-09-01), Taylor
patent: 5024302 (1991-06-01), Karnopp
patent: 5158270 (1992-10-01), Lin

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Seismic isolator and method for strengthening structures against does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Seismic isolator and method for strengthening structures against, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seismic isolator and method for strengthening structures against will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1767117

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.