Force limiting gear reducer for lifting pinion of self-elevating platform
US4480491A · kind A · utility
3Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1981 |
| Grant date | Nov 6, 1984 |
| Priority date | — |
| Expiry date | Apr 2, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19684
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A force limiting gear reducer for a lifting pinion of self-elevating platform, comprising a gear reducer divided in two parts, a first of said parts being directly connected to a pinion shaft and pinion support and a second said part comprising a shaft-mounted prime reducer with brake and motor connected to an input shaft of the first reducer, a reaction arm of the shaft-mounted prime reducer being connected to a fixed point of a jacking mechanism by means of at least one hydraulic cylinder, means to control the oil pressure in the hydraulic cylinder, and abutments limiting the stroke of the hydraulic cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.