| 摘要 |
The primary object of the invention is to provide a telescoping hydraulic hoist (10) which is significantly lighter than hoists of similar types. The telescopic hydraulic hoist (10) is made of drawn-over-manual (DOM) aluminum tubing consisting of a specially formulated alloy. The hoist is fast-acting, has a greater bearing life, and air breathers (94, 96, 98, 100, 102) for the spaces between hydraulic stages, to prevent dirt from being sucked into the hydraulic mechanism.
|
