Electric resistance heating devices – Heating devices – Concentrated heated air stream
Patent
1990-11-16
1992-08-18
Bartis, Anthony
Electric resistance heating devices
Heating devices
Concentrated heated air stream
29447, 34 97, 34104, 34105, 34243R, 392360, 392365, H05B 100, F24H 312, F27B 1700
Patent
active
051406667
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.
REFERENCES:
patent: 2023861 (1935-12-01), Stienen
patent: 3427434 (1969-02-01), Gassaway
patent: 3513564 (1970-05-01), Gramprie
patent: 3560709 (1971-02-01), Crane et al.
patent: 3599345 (1971-08-01), Tolmie
patent: 3706824 (1979-12-01), Huber et al.
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