Theatrical stage
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United States of America Patent
Stats
-
Jan 27, 1987
Issued Date -
N/A
app pub date -
Sep 23, 1985
filing date -
Mar 3, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A theatrical stage, comprising a plurality of side-by-side, screw-operated shearlegs tables, each such table having its own operating mechanism connected to the operating vertical screw. The screw is pivotally connected to the shearlegs members by dual transmission members, by which movement of the table platform is made almost linear in relation to the rotation of the screw. The vertical movement of the platform of the shearlegs tables is synchronized by employing as operating mechanism, electro-hydraulic step motors for each table, with a brake mounted on each screw for arresting rotary motion of the step motor.
First Claim
Family
International Classification(s)
Cited Art Landscape
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