US3599461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic forming element
Assignee: Chevron USA Inc
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Filing: 1968-11-21
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Granted: 1971-08-17
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Expires: 1988-11-21
Abstract
Abstract A forming element is described for use in magnetic forming apparatus. The forming element includes a conductor and a support member comprised of ceramic material. The support member, in addition to supporting the conductor, affords a vehicle for conducting heat from the conductor.
Inventors
- 👤 Jaromir Astl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:28
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; H01F7/202; B; B21; B21D; B21D26/00; B21D26/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49803
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
A forming element for use in magnetic forming apparatus, comprising, a conductor having a plurality of helical turns and being responsive to pulses of electrical energy applied thereto for conducting a current producing a magnetic field for forming a workpiece disposed in the magnetic field and surrounding the helical conductor, and a support member for supporting said conductor against forces directed radially inward during forming, said support member being comprised of a tubular unitary body of solid dense ceramic material coaxial with and within the turns of said conductor and in direct contact therewith, and means within said tubular support member for removing sufficient heat from said support member to cool said conductor.
Claim 2
Dependent Claim
113 words
A forming element for use in magnetic forming apparatus, comprising, a conductor having a plurality of helical turns and being responsive to pulses of electrical energy applied thereto for conducting a current producing a magnetic field for forming a workpiece disposed in the magnetic field and surrounding the helical conductor, and a support member for supporting said conductor against forces directed radially inward during forming, said support member being comprised of a tubular unitary body of solid dense ceramic material coaxial with and within the turns of said conductor and in direct contact therewith, and means within said tubular support member for removing sufficient heat from said support member to cool said conductor.
Claim 3
Dependent Claim
31 words
A forming element according to claim 1 further including a return conductor comprising an elongated member disposed centrally of said support member for providing a return current path form said conductor.
Claim 4
Dependent Claim
27 words
A forming element according to claim 1 wherein said heat removing means include means for passing a fluid coolant proximate a further surface of said ceramic member.
Claim 5
Dependent Claim
15 words
A forming element according to claim 3 wherein said fluid coolant contacts said further surface.
Claim 6
Dependent Claim
13 words
A forming element according to claim 4 wherein said further surface is finned.
Claim 7
Dependent Claim
22 words
A forming element according to claim 1 wherein the ceramic material of which said support member is comprised consists of aluminum oxide.
Claim 8
Dependent Claim
27 words
A forming element according to claim 2 wherein said elongated member is hollow and provides a passage for the flow of fluid coolant for cooling said conductor.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |