发明名称 |
APPARATUS FOR THREADING A CLOSED FRAMED OPENING BY HELICOPTERS |
摘要 |
<p>An apparatus for automatically threading successive closed framed openings by helicopter towing a line equipped with a separable coupling. The invention utilizes a short cable loop pre-threaded through each closed frame such as the throat of a stringing block which cable loop is provided at its ends with coupling halves releasably supported at the opposite ends of a trough overlying the framed opening to be threaded. A helicopter is manoeuvred to drop the towing line coupling into a trough where its halves are automatically separated and thereafter recoupled to a respective end of the cable loop. Subsequently, the forward coupling can be similarly separated for insertion of a second cable loop in the towing line at the next threading apparatus in the helicopter's path of travel.</p> |
申请公布号 |
CA1141370(A) |
申请公布日期 |
1983.02.15 |
申请号 |
CA19800355600 |
申请日期 |
1980.07.07 |
申请人 |
LINDSEY MANUFACTURING CO. |
发明人 |
BERGMAN, FRED S.;RADELET, REGINALD P. |
分类号 |
H02G1/04;(IPC1-7):B66D1/395;F16G11/14;F16G17/00 |
主分类号 |
H02G1/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|