Static structures (e.g. – buildings) – Means compensating earth-transmitted force – Relative motion means between a structure and its foundation
Patent
1990-09-12
1991-10-15
Scherbel, David A.
Static structures (e.g., buildings)
Means compensating earth-transmitted force
Relative motion means between a structure and its foundation
52167CB, 248638, E02D 2734, E04B 198, E04H 902
Patent
active
050562800
ABSTRACT:
A manufacture to protect a structure from destructive earthquakes as well as to secure its stability under the strongest possible wind, having a number of ball transfer units rigidly coupled to a supported superstructure; the same number of pedestal plates supporting the ball transfer units, each having an upper surface having a plurality of curved surfaces with a central depression following the shape of the ball. The force of gravity will keep the structure in its steady initial position when the balls are inset into corresponding depressions at any wind pressure and at slight earthquakes. With magnitude of earth movement exceeding a certain threshold the balls get out of central depressions thus providing a controlled separation of the superstructure from the foundation, and the upper surfaces of pedestal plates with properly designed geometry governs transfer of horizontal movement into the superstructure and prevents hazardous structural vibrations.
REFERENCES:
patent: 951028 (1910-03-01), Schar
patent: 2014643 (1935-09-01), Bakker
patent: 2359036 (1944-09-01), Harper
patent: 3771270 (1973-11-01), Byers
patent: 4462955 (1984-07-01), Albin et al.
patent: 4514941 (1985-05-01), Gonzalez Flores
patent: 4883250 (1989-11-01), Yano et al.
patent: 4974378 (1990-12-01), Shustov
McGann Ripley Deborah
Scherbel David A.
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