US4180717A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inductively heatable godet with insulating means
Assignee: Oerlikon Barmag AG
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Filing: 1977-10-17
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Granted: 1979-12-25
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Expires: 1997-10-17
Abstract
Abstract An improved means for mounting the induction coil of an inductively heated godet about the magnetic core thereof so as to eliminate any movement or play therebetween in operation caused by heat expansion and vibration. The improvement comprises placing an elastic intermediate piece between the coil and magnetic core which compensates for any unequal thermal expansion of these elements. In the preferred embodiment of the present invention, the intermediate piece is constructed of a hose-like hollow chamber through which a coolant under pressure is circulated from an external source.
Inventors
- 👤 Erich Lenk
- 👤 Karl Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:58
CPC Classifications
D; D02; D02J; D02J13/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
123 words
An improved inductively heated godet of the type wherein a drive shaft drives a rotatable hollow casing which is secured to the end of the drive shaft and a heating device is located between the drive shaft and casing on the machine frame, the heating device comprising an induction coil placed about a magnetic core formed by a laminated pack, the improvement comprising: an elastic intermediate piece having a hose-like hollow chamber located between the laminated pack and said coil and extending over the length of said laminated pack, said hose being expandable when filled with a fluid coolant to secure said coil about said laminated pack; and inlet and outlet means to circulate a fluid coolant through the expandable hose under pressure.
Claim 2
Dependent Claim
123 words
An improved inductively heated godet of the type wherein a drive shaft drives a rotatable hollow casing which is secured to the end of the drive shaft and a heating device is located between the drive shaft and casing on the machine frame, the heating device comprising an induction coil placed about a magnetic core formed by a laminated pack, the improvement comprising: an elastic intermediate piece having a hose-like hollow chamber located between the laminated pack and said coil and extending over the length of said laminated pack, said hose being expandable when filled with a fluid coolant to secure said coil about said laminated pack; and inlet and outlet means to circulate a fluid coolant through the expandable hose under pressure.
Claim 3
Dependent Claim
26 words
An improved inductively heated godet as claimed in claim 1 wherein said hose is connected by its inlet and outlet ends to a pressurized coolant circuit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |