US3835282A — Induction heating apparatus for heating the margi…

Claim 1

Independent Claim 91 words

Induction heating apparatus for heating the marginal edge of a disk while it is being deformed into a flange, flux generating means for establishing a magnetic flux within said marginal edge, means for maintaining said magnetic flux in approximately the same concentration in said marginal edge throughout said deformation, separate flux generating means disposed on opposite sides of the marginal edge of said disk for uniformly heating both of said sides and means supporting said separate flux generating means for movement in the same relative direction as said edge is deformed.

Claim 2

Dependent Claim 91 words

Induction heating apparatus for heating the marginal edge of a disk while it is being deformed into a flange, flux generating means for establishing a magnetic flux within said marginal edge, means for maintaining said magnetic flux in approximately the same concentration in said marginal edge throughout said deformation, separate flux generating means disposed on opposite sides of the marginal edge of said disk for uniformly heating both of said sides and means supporting said separate flux generating means for movement in the same relative direction as said edge is deformed.

Claim 3

Dependent Claim 30 words

Apparatus according to claim 1, wherein said supporting means includes a compression spring on one side of said disk and a tension spring on the other side of said disk.

Claim 4

Dependent Claim 31 words

Apparatus according to claim 1, wherein said flux generating means includes a ferromagnetic member and an electrical conductor, and including electrical insulating means interposed between said ferromagnetic member and said conductor.

Claim 5

Dependent Claim 30 words

Apparatus according to claim 1, wherein said flux generating means includes a ferromagnetic member and an electrical conductor, and electrical insulating means interposed between said ferromagnetic member and said disk.

Claim 6

Dependent Claim 144 words

Induction heating apparatus for heating the marginal edge of a disk while it is being deformed into a flange, flux generating means for establishing a magnetic flux within said marginal edge, means for maintaining said magnetic flux in approximately the same concentration in said marginal edge throughout said deformation, separate flux generating means disposed on opposite sides of the marginal edge of said disk, for uniformly heating both of said sides, means supporting said separate flux generating means for movement in the same relative direction as said edge is deformed, said flux generating means comprising two separate inductors each juxtaposed with a separate minor proportion of the periphery of said disk, one of said inductors being adapted for heating the central portion of the marginal zone of said disk, and the other inductor being adapted for heating the outer portion of said marginal zone.

Claim 7

Dependent Claim 144 words

Induction heating apparatus for heating the marginal edge of a disk while it is being deformed into a flange, flux generating means for establishing a magnetic flux within said marginal edge, means for maintaining said magnetic flux in approximately the same concentration in said marginal edge throughout said deformation, separate flux generating means disposed on opposite sides of the marginal edge of said disk, for uniformly heating both of said sides, means supporting said separate flux generating means for movement in the same relative direction as said edge is deformed, said flux generating means comprising two separate inductors each juxtaposed with a separate minor proportion of the periphery of said disk, one of said inductors being adapted for heating the central portion of the marginal zone of said disk, and the other inductor being adapted for heating the outer portion of said marginal zone.

Claim 8

Dependent Claim 43 words

Apparatus according to claim 5, wherein said one inductor is provided with a movable ferromagnetic member means for moving said movable member to maintain an end of said movable member juxtaposed with said disk, and wherein said second inductor is a tunnel inductor.

Claim 9

Independent Claim 112 words

A method of heating the marginal edge of a disk while it is being deformed into a flange, comprising the steps of establishing a magnetic flux within said marginal edge, maintaining said magnetic flux in approximately the same concentration throughout said deformation, providing a path for said magnetic flux including a movable ferromagnetic member, moving said member during said deformation to maintain a constant spacing between said movable member and said disk, movable ferromagnetic members being provided on opposite sides of said disk, and wherein the movable members on both sides of said disk are moved during said deformation to maintain a relatively constant separation between said disk and said movable members.

Claim 10

Independent Claim 112 words

A method of heating the marginal edge of a disk while it is being deformed into a flange, comprising the steps of establishing a magnetic flux within said marginal edge, maintaining said magnetic flux in approximately the same concentration throughout said deformation, providing a path for said magnetic flux including a movable ferromagnetic member, moving said member during said deformation to maintain a constant spacing between said movable member and said disk, movable ferromagnetic members being provided on opposite sides of said disk, and wherein the movable members on both sides of said disk are moved during said deformation to maintain a relatively constant separation between said disk and said movable members.

Claim 11

Independent Claim 135 words

An apparatus for heating the edge zone of a disc, for example, a boiler bottom or the like rotating repeatedly about a central normal axis of the disc for the purpose of deformation of the edge zone to form a marginal rim, comprising an Edge heating tool, alternating current inductors cooperable with the edge tool which sectorially impinge on both sides of the disc, the inductors including current conductors which enclose the edge zone of the disc before and during the deformation, first means provided for movement on said edge heating tool for the concentration of the magnetic alternating field, and support means for movably guiding said first means in the area of the edge zone in such a manner that in each phase of the deformation the inductors and the disc are operatively coupled.

Claim 12

Independent Claim 135 words

An apparatus for heating the edge zone of a disc, for example, a boiler bottom or the like rotating repeatedly about a central normal axis of the disc for the purpose of deformation of the edge zone to form a marginal rim, comprising an Edge heating tool, alternating current inductors cooperable with the edge tool which sectorially impinge on both sides of the disc, the inductors including current conductors which enclose the edge zone of the disc before and during the deformation, first means provided for movement on said edge heating tool for the concentration of the magnetic alternating field, and support means for movably guiding said first means in the area of the edge zone in such a manner that in each phase of the deformation the inductors and the disc are operatively coupled.

Claim 13

Dependent Claim 35 words

Apparatus according to claim 8 further characterized in that the first means comprises movable short-circuit panels, and rollers supporting said panels on the disc, said support means including means having the panels extended there through.

Claim 14

Dependent Claim 17 words

Apparatus according to claim 9 further comprising a pressure equalizer connecting said support means with one another.

Claim 15

Dependent Claim 25 words

Apparatus according to claim 8, characterized in that the first means comprises movable short-circuit panels which are electrically insulated from the windings of the conductors.

Claim 16

Dependent Claim 19 words

Apparatus according to claim 11, further characterized in that the movable short-circuit panels are electrically insulated from the disc.

Claim 17

Dependent Claim 109 words

Apparatus according to claim 8, wherein said alternating current inductors comprises two inductors and further characterized in that the two inductors are arranged consecutively in the direction of movement of the disc, a first of said inductors being operable to heat the part of the edge zone nearest to the interior of the disc and being further provided with the movable short-circuit panels, said short-circuit panels including iron, said apparatus further comprising rollers and the second of said inductors being constructed as a short tunnel inductor and being movable during the deformation and operable to continuously heat the outer part of the edge zone while traveling on said rollers.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1977-09-09	1978-03-11	1978-09-10	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1981-09-09	1982-03-11	1982-09-10	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1985-09-09	1986-03-11	1986-09-10	$7700.00	Window Closed / Lapsed

Induction heating apparatus for heating the marginal edge of a disk

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag