Electric heating – Metal heating – Of cylinders
Patent
1990-07-05
1991-07-23
Leung, Philip H.
Electric heating
Metal heating
Of cylinders
219 1075, 219 1077, 219497, H05B 606
Patent
active
RE0336440
ABSTRACT:
A ferromagnetic element has current passed through it either by direct electrical connections or by induction. The current through the ferromagnetic element may be far greater than is necessary to heat the element above its effective Curie temperature. As the element is heated and is passing through its effective Curie transition (that is its temperature is rising from below its effective Curie temperature to, or above, its effective Curie temperature) the change in permeability of the element is sensed and the current through the element is cut off. The element then cools. When the temperature falls below the effective Curie temperature, the full current is restored. The heating and cooling process repeats itself indefinitely. The result is that the element is maintained at its effective Curie by a pulsating current fed to the element. The Curie transition may be sensed by directly sensing changes in permeability as by an auto-transformer winding, on the element; or by sensing changes in the power to the element by reason of the change in resistance of the element as it passes through the effective Curie temperature.
REFERENCES:
patent: 1861687 (1932-06-01), Cooley
patent: 2324525 (1943-07-01), Mittelmann
patent: 2400472 (1946-05-01), Strickland, Jr.
patent: 3064109 (1962-11-01), Peschel
patent: 3153132 (1964-10-01), Greene
patent: 3218384 (1965-11-01), Shaw
patent: 3584190 (1971-06-01), Marcoux
patent: 3601126 (1971-08-01), Estes
patent: 3686460 (1972-08-01), Lamparter
patent: 3800218 (1974-03-01), Shekel
patent: 3924102 (1975-12-01), Hangkom
patent: 4002882 (1977-01-01), McCutchen
patent: 4032740 (1977-06-01), Mittelmann
patent: 4091813 (1978-05-01), Shaw et al.
patent: 4093839 (1978-06-01), Moliterno et al.
patent: 4185632 (1980-01-01), Shaw
patent: 4211911 (1980-07-01), Dehn
patent: 4256945 (1981-03-01), Carter et al.
patent: 4499358 (1985-02-01), Scott
patent: 4507546 (1985-03-01), Fortune et al.
patent: 4546238 (1985-10-01), Ahs
patent: 4616120 (1986-10-01), Maruyama et al.
patent: 4626767 (1986-12-01), Clappier et al.
PCT/GB80/00062 "Methods for Joining Together Thermoplastics Pipes and Pipe Fittings", 1981.
Memorandum: Junior Parties Exhibit 88 in Interference 100775 dated: 10/19/77, Subject: Preliminary Study of Possibility of Maintaining Constant Temperature in Cooled Zone of RF Blade.
Clinical Oncology (1977) pp. 301-318.
Exhibits 98, 107 and 108 of the Junior Parties; Exhibit 72 of the Party Shaw, and pp. 523-526 and 543-553 of the Junior Parties in Interference 100,775, Carter et al. v. Krumme v. Shaw.
The Voltage Regulator Handbook, published by Texas Instruments, Inc.
Excerpts from Motorola R.F. Device Data, re Broadband Transformers & Power Combining Techniques for R.F.
Excerpts from Texas Instruments, Inc., Typical Application Data for Types SE 555, SA 555, NE 555, Precision Timers.
Excerpts from Texas Instruments, Inc., Linear Integrated Circuits, Types uA741M, uA741C, General Purpose Operational Amplifier.
The ARRL 1985 Handbook published by the American Radio Relay League (1985 62nd Edition), pp. 30-24 to 30-30.
Memorandum from Phil Carter to Rod Derbyshire dated Aug. 28, 1985, Subject: Review of Hall Patent Application.
Leung Philip H.
Metcal Inc.
LandOfFree
Ferromagnetic element with temperature regulation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ferromagnetic element with temperature regulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ferromagnetic element with temperature regulation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-424046