US 5,312,079 A · Universal C-clamp for stage accessories

Abstract

A C-clamp for mounting stage accessories has four angled body portions, with one body portion being bent to provide a first acute angle .phi. between the first and second body portions, and a second acute angle .theta. between the second and third body portions, and an approximately right angle .alpha. between the third and fourth body portions. The C-clamp has threaded holes in the first body portion and in the fourth body portion, respectively. The first acute angle is greater than the second acute angle. A tightening bolt in the first threaded hole is positioned to compress a pipe against the second and third body portions. Consequently, the tightening bolt can securely fasten the clamp onto support pipes of various sizes. A mounting bolt is inserted into the second threaded hole either to fasten the C-clamp to a support structure such as a ceiling joist so that the clamp can be used to support a pipe, or to fasten a stage accessory such as a flood light, spot projector or curtain to a pipe. Thus, one type of clamp can be used not only on a range of pipe sizes, but also both to support the pipe and to fasten stage accessories to the pipe.

Claims11

Dependent claims

A clamp for mounting stage accessories, said clamp comprising:

a body member having first, second, third and fourth body portions, said body member having a first acute angle between said first and said second body portions, and having a second acute angle between said second and said third body portions, and having an approximately right angle between said third and said fourth body portions, and said member also having a first threaded hole in said first body portion, and with said first acute angle being greater than said second acute angle and with said approximately right angle being greater than either of said acute angles;
and
a tightening bolt disposed in said first threaded hole in said first body portion for engaging a pipe against the second and third body portions, whereby the tightening bolt can securely fasten the clamp onto pipes of various sizes.

A stage accessory mounting assembly, said assembly comprising:

a pipe;
at least a first clamp and a second clamp, each clamp including a body member having first, second, third and fourth body portions, said body member having a first acute angle between said first and said second body portions, and having a second acute angle formed between said second and said third body portions, and having an approximately right angle formed between said third and said fourth body portions, and said member also having a first threaded hole in said first body portion and a second threaded hole in said fourth body portion, with said first acute angle being greater than said second acute angle and with said approximately right angle being greater than either of said acute angles, and a tightening bolt disposed in said first threaded hole in said first portion for compressing a pipe against the second and third portions;
an
at least first and second mounting bolts attached to a support structure, and with said tightening bolts fastening said first and second clamps to said pipe and said first mounting bolt inserted into the second threaded hole of the first clamp and said second mounting bolt inserted into the second threaded hole of the second clamp to fasten the clamp to said support structure, thereby supporting said pipe.

1 more element

Dependencies are inferred from the claim text.

Universal C-clamp for stage accessories

Life of this patent

Universal C-clamp for stage accessories

Life of this patent

Abstract

Claims11