초록 ▼

A lifting apparatus including a base, a load platform, a vertically expandable actuator linkage mechanically coupled between said load platform and said base, and a glycol operated actuator chamber having a compressible bellows. Means are provided for mechanically coupling the compressible bellows b

A lifting apparatus including a base, a load platform, a vertically expandable actuator linkage mechanically coupled between said load platform and said base, and a glycol operated actuator chamber having a compressible bellows. Means are provided for mechanically coupling the compressible bellows between the base or platform and the linkage. This provides an extremely stable platform, and one which remains rock solid once it is set in position, because glycol is a non-compressible fluid and is not affected by normal temperature variations found in industrial settings.

대표청구항 ▼

[ What is claimed is:] [1.] A lifting apparatus including, in combination:a) a base;b) a load platform;c) a vertically expandable actuator linkage mechanically coupled between said load platform and said base, and;d) a glycol operated actuator chamber comprising:i) a compressible bellows,ii) means f

[ What is claimed is:] [1.] A lifting apparatus including, in combination:a) a base;b) a load platform;c) a vertically expandable actuator linkage mechanically coupled between said load platform and said base, and;d) a glycol operated actuator chamber comprising:i) a compressible bellows,ii) means for mechanically coupling said compressible bellows between said base and said linkage such that said bellows is adapted to operate said actuator linkage in response to glycol being introduced into said compressible bellows.