Pneumatic powered hoist
US4448397A · kind A · utility
4Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1982 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Nov 12, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66D3/26
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
There is disclosed a pneumatic powered hoist wherein the motor driving the load lift wheel is located within a substantially sealed housing which also encloses the hoist gear and brake mechanisms. The motor exhausts into the housing allowing the exhaust to expand and circulate throughout the housing while cooling and lubricating the mechanisms therein and exit through restricted chain guides leading to and from the load lift wheel; the exhaust further expanding and cooling and lubricating the chain. The high pressure, staccato exhausts from the motor are attenuated and muffled interiorly of the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.