Land vehicles: dumping – Tilting – Operating mechanism
Patent
1990-10-09
1991-07-30
Chilcot, Jr., Richard E.
Land vehicles: dumping
Tilting
Operating mechanism
248636, 248638, 248913, 57167R, 57167DF, F16M 1300, E04B 136, E04H 906
Patent
active
050353942
ABSTRACT:
An isolator for seismic activity including an upper level for supporting an object to be protected, an intermediate level, and a lower level for attachment to the floor or other structure. An interconnection is provided between the upper and intermediate levels to permit relative movement between the levels along a first axis, and a similar interconnetion is provided between the intermediate and lower levels to permit relative between along a second axis perpendicular to the first axis. Each of the interconnections includes one or more bars mounted on one of the levels and defining guide faces oblique to the axis of movement, and a lever pivotally mounted on the other of the levels with a roller for engaging the guide faces, with a spring biasing the roller toward the guide faces. The interconnection also includes tracks and bearings riding on the tracks to provide the interface movement between the levels.
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Chilcot Jr. Richard E.
McGann Ripley Deborah
The J. Paul Getty Trust
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