Electric heating – Inductive heating – Specific heating application
Patent
1994-01-06
1995-03-14
Leung, Philip H.
Electric heating
Inductive heating
Specific heating application
219673, 219635, 219670, 219676, H05B 614
Patent
active
053978765
ABSTRACT:
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.
REFERENCES:
patent: 2176601 (1939-10-01), Bates
patent: 2397629 (1946-04-01), Stevens
patent: 2810053 (1957-10-01), Messner
patent: 3236993 (1966-02-01), Jones
patent: 3393286 (1968-07-01), Zandstra
patent: 4100387 (1978-07-01), Reinke et al.
patent: 4574172 (1986-03-01), Burack et al.
patent: 4590347 (1986-05-01), Thatcher et al.
Maenosono Tsukasa
Matsuura Ichiro
Morita Yoji
Shimamoto Takijiro
Shimasaki Ichiro
Dai-Ichi High Frequency Co. Ltd.
Leung Philip H.
Mitsubishi Jukogyo Kabushiki Kaishi
LandOfFree
High frequency bolt heater having induction heating coil does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High frequency bolt heater having induction heating coil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High frequency bolt heater having induction heating coil will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-714406