Heating apparatus for expanding a cylindrical wall using heated air
US5140666A · kind A · utility
Inventor
Key dates
| Filing date | Nov 16, 1990 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | Nov 16, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49865
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus for heating the inner cylindrical wall of a device, such as a bearing, gear, sprocket, coupling, sleeve, or the like, for expanding the cylindrical wall to facilitate the installation of the device on a receiving element includes a source of heated air coupled to an elongated cylindrical air distributor having an outer diameter small than the inner diameter of the cylindrical wall. Adjustable supports position and align the air distributor and the device to allow distributor to be inserted into the device with their central axes substantially coaxially aligned so that an annular space is created therebetween into which heated air is communicated from the distributor through a plurality of opening on the distributor. Annular baffles on the distributor close the opposite sides of the annular space while allowing exhaust of sufficient heated air to prevent undesired pressure buildup in the space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.