Portable platform trestle for stages, platforms, pedestals or th

Details Portable platform trestle for stages, platforms, pedestals or th Portable platform trestle for stages, platforms, pedestals or th

1985-04-03

1986-03-18

Murtagh, John E.

Static structures (e.g., buildings)

Lazy tong extension unit

52646, 108132, 182152, E04H 1218

Patent

active

045759758

ABSTRACT:
A platform trestle adapted for assembly or disassembly with similar platform trestles to form stages for public events is provided with an upper platform, an upper and a lower frame, and four scissor members, the platform trestle being manually adjustable as to height. All of the scissors are arranged side by side and respectively two of the scissors by pairs of respectively an outer and an inner scissor member at the longitudinal sides of the platform. Moreover the legs and the arms of the outer and of the inner scissors are strutted by cross bracings so that the platform trestle is very stable, but still portable by two persons and is adjustable at a maximum height just under the length of its platform.

REFERENCES:
patent: 460583 (1891-10-01), Kautz
patent: 583034 (1897-05-01), Davis
patent: 3700070 (1972-10-01), King

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