| 发明名称 |
Direct-fired heater |
| 摘要 |
A combustion system for a portable forced air heater having two frusta-conical sections attached to a circular burner tube, wherein each frusta-conical section has pre-determined vent hole patterns that allow the gas heater to have a variable burn rate.
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| 申请公布号 |
US6681760(B2) |
申请公布日期 |
2004.01.27 |
| 申请号 |
US20020183713 |
申请日期 |
2002.06.25 |
| 申请人 |
TOPP CONSTRUCTION SERVICES, INC. |
发明人 |
TOPP DANIEL P. |
| 分类号 |
F23D14/00;(IPC1-7):F23D14/62;F23D1/00 |
主分类号 |
F23D14/00 |
| 代理机构 |
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