发明名称 |
Self-tightening electrical sleeve heater |
摘要 |
An electrical sleeve heater has a tubular outer wall and a heating coil inside the outer wall. An outer sleeve inside the heating coil formed with an axially throughgoing slot having angularly confronting edges is made of a material having a high coefficient of thermal expansion. An inner sleeve inside the outer sleeve is formed with an axially throughgoing slot and with outwardly projecting lips engaged through the outer-sleeve slot bearing angularly on the outer-sleeve slot edges. It is made of a material having a low coefficient of thermal expansion so that when the sleeves are heated the outer-sleeve edges press the inner-sleeve lips together and thereby decrease the radial inner diameter of the inner sleeve.
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申请公布号 |
US6025577(A) |
申请公布日期 |
2000.02.15 |
申请号 |
US19980092785 |
申请日期 |
1998.06.05 |
申请人 |
HOTSET HEIZPATRONEN U. ZUBEHOR GMBH |
发明人 |
SCHWARZKOPF, EUGEN |
分类号 |
H05B3/42;B29C45/17;B29C45/74;H05B3/58;(IPC1-7):H05B3/58;F22B29/06;H05B3/40 |
主分类号 |
H05B3/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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