Undertaking
Patent
1981-05-26
1983-07-12
Pinkham, Richard C.
Undertaking
212 74, A63J 512
Patent
active
043926487
ABSTRACT:
A personnel transportation apparatus is disclosed herein for positioning a performer across a stage in view of an audience which includes an elongated stationary support having an upper and a lower set of rails for rollably supporting a first and a second carriage respectively. A first pulley system operably moves the first carriage along the upper rails between the opposite ends of the support to transport the performer across the stage while a second pulley system drives the second carriage along the lower rails which moves in the opposite direction to the first carrier and moves twice the distance. A third pulley system interconnects the first and second carriages for controlling the performers height above the stage as the performer travels across the stage. Independant control of horizontal travel and vertical height of the performed is established.
REFERENCES:
patent: 2049641 (1936-08-01), De Wolfe
patent: 3476385 (1969-11-01), Foy
Crow Stephen R.
Marrs Roger A.
Pinkham Richard C.
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