| 摘要 |
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. |
