Seal arrangement for pull rods in rolling mills
US4456267A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1982 |
| Grant date | Jun 26, 1984 |
| Priority date | — |
| Expiry date | Nov 2, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C15/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A seal arrangement is provided for the pull rods extending out of a rolling mill housing through a housing passageway where a spring suspension is located at the ends of the pull rods exteriorly of the housing. In such an arrangement pull rods experience motion in the axial and radial directions. In affording a satisfactory seal, the pull rods extend through a sleeve as they pass from the interior of the housing into the housing passageway. A first ball-and-socket joint is located within the sleeve closely enclosing the pull rod. A second ball-and-socket joint is located around the exterior of the sleeve within the housing passageway. In pressure mills, a sealing air connection may be provided for the housing passageway and a further seal provided by a bellows located on the exterior of the housing extending between the pull rod and the outlet from the housing passageway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.