发明名称 |
Electric cast-metal heater |
摘要 |
An electric heater comprising a metal casting having an electric heating element of sinuate shape cast therein. The casting has a plurality of ventilation openings therethrough located between the sinuations of the heating element for permitting air to flow directly to the surface on which the heater is mounted for ventilating and cooling it.
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申请公布号 |
US4558210(A) |
申请公布日期 |
1985.12.10 |
申请号 |
US19840637283 |
申请日期 |
1984.08.03 |
申请人 |
WATLOW ELECTRIC MANUFACTURING COMPANY |
发明人 |
LEARY, JOHN F. |
分类号 |
B29C47/82;H05B3/42;(IPC1-7):H05B3/58 |
主分类号 |
B29C47/82 |
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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