发明名称 |
High frequency bolt heater having induction heating coil |
摘要 |
A high frequency bolt heater is provided which can heat up the inside of a narrow hole much faster than a conventional bolt heater employing a resistance wire. The high frequency bolt heater includes an induction heating coil made of a copper tube bent in a hairpin fashion and whose shape is made approximately circular in section by pinching a magnet between opposed portions thereof. The heater can be inserted into a hole bored in the axial direction of a metallic bolt. A length of the coil is made approximately equal with that of the bored hole, and the magnet is omitted from a region of the heater which corresponds to a screw portion of the bolt for mounting a nut. An adjustable stopper made of a heat resistant electrical insulator is provided for setting a necessary length of the induction heating coil to be inserted into the hole, and a heat resistant insulator is provided on the surface of the induction heating coil.
|
申请公布号 |
US5397876(A) |
申请公布日期 |
1995.03.14 |
申请号 |
US19940177956 |
申请日期 |
1994.01.06 |
申请人 |
MITSUBISHI JUKOGYO KABUSHIKI KAISHI;DAI-ICHI HIGH FREQUENCY CO., LTD. |
发明人 |
SHIMAMOTO, TAKIJIRO;MORITA, YOJI;SHIMASAKI, ICHIRO;MATSUURA, ICHIRO;MAENOSONO, TSUKASA |
分类号 |
H05B6/10;B23P19/06;H05B6/14;H05B6/38;(IPC1-7):H05B6/14 |
主分类号 |
H05B6/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|