1) Air chain hoist
A pneumatically driven machinery unit, utilizing chain as its lifting medium, and used for the lifting and lowering of a freely suspended (unguided)load. Often used in environments that require electric spark avoidance due to a potentially explosive atmosphere.
2) Air hoist
A suspended machinery unit that is powered by pneumatically driven motors and is used to lift or lower a freely suspended (unguided) load. Generally uses chain or wire rope as its lifting medium.
3) Hoist Manufacturers Institute
The Hoist Manufacturer's Institute, an affiliate of Material Handling Industry, is a trade association of manufacturers of overhead handling hoists. The products of its member companies include hand chain hoists, ratchet lever hoists, trolleys, air chain and air rope hoists, and electric chain and electric wire rope hoists.
Hoist Manufacturers Institute
8720 Red Oak Blvd., Suite 201
Charlotte, NC 28217
Phone: 704-676-1199 Fax: (704) 676-1199
Hal Vandiver, Managing Director
4) Hoist Manufacturers Institute (HMI) Industry Group
The Hoist Manufacturers Institute (HMI) members are the Industry’s leading suppliers of hoisting equipment including hand chain hoists, ratchet lever hoists, trolleys, air chain hoist, air wire rope hoists, electric chain hoists, and electric wire manufacturing and distribution sector.