Earthquake displacement recorder

Details Earthquake displacement recorder Earthquake displacement recorder

1986-08-13

1987-09-15

Levy, Stewart J.

Recorders

Record tracer movement responsive to inertia or mass...

G01D 900

Patent

active

046943048

ABSTRACT:
A device for recording directly the strain or distortion of a structural space as caused by an earthquake. Two similar light, flat rigid A-frame-like members are attached to points near the floor and ceiling, e.g., of a room, with their apex portions facing each other and overlapping. A displacement recorder is mounted in the overlap region. Earthquake distortion or strain in buildings occurs commonly as relative lateral displacement between a floor and a ceiling; the A-frame members transmit such displacement directly to the recorder. The installation may lie flat against a wall and be enclosed by a shallow cover.

REFERENCES:
patent: 3331078 (1967-07-01), Howland
patent: 3987667 (1976-10-01), Rasmussen et al.
patent: 4155265 (1979-05-01), Pickett et al.

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