Screening machine with improved base force reduction
US5730297A · kind A · utility
4Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1995 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Nov 27, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B1/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A screening machine of the moving base type has an oscillating force reducer and a single counterbalance drive, with the weight of the drive counterbalance sized to underbalance the longitudinal reaction force exerted by the deck on the drive shaft, but to substantially overbalance the lateral reaction force exerted by the deck on the drive shaft. The weight of the force reducer, the spring constant of the spring which oscillates the force reducer, and overall cost are surprisingly reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.