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US 4,741,505 AGranted
Scaffolding arrangement
OwnerCarl E. Andersoninventor
Life of this patent
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OwnerCarl E. Andersoninventor
Estimating the term…
A side rail system for interconnecting layered sections of elongated scaffold staging with the sections respectively spanning pairs of opposing upper and lower support arms of pump jacks which respectively ride on spaced apart pump jack poles. The side rail system includes upright posts which are spaced along the staging. A pair of rods are associated with each of the posts. The rods confrontingly project from the respective staging sections. The posts are pivotally coupled to the rods and are secured to the rods by quick adjust pins to prevent separation of the rods and posts. A mid-rail as well as a toe board can be interconnected between the rails. An end rail system can also be included. The scaffolding arrangement can be used exteriorly with a brace onto a wall. It can also be used interiorly between roof and floor with appropriate height adjustment arrangement provided.
A scaffolding arrangement for positioning between an upper and lower support surface, comprising a hollow pole, coupling means at one distal end for retention against one of said support surfaces, and height adjustment means insertable into the other distal end for adjustment of the pole height to reach the other support surface, whereby said pole is securely wedged between said support surface, and comprising a leveling jack for positioning on a lower support surface and including an elongated screw, and adjustable handle rotatably positioned along the screw, a plug along said screw above the handle for snug insertion into the bottom end of the hollow pole to close it off, a plate beneath said plug abutting the lower end of the hollow pole, and a centering plate at the top end of the screw insertable within said hollow pole, wherein the upper support surface includes I-beams and said coupling means includes a pair of back-to-back arranged unattached U-shaped caps one of which is inverted and loosely sits on top of said pole and the other of which loosely fits under the I-beam, and wherein the caps are secured in place only by the vertical wedging of the pole.
Dependencies are inferred from the claim text.