US3562489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heated godet
Assignee: Oerlikon Barmag AG
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Filing: 1969-10-22
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Granted: 1971-02-09
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Expires: 1989-10-22
Abstract
Abstract Heated godets or rollers for the conveyance and heating of filaments or foils, especially of synthetic polymer material. Godets are operable at peripheral velocities at which the centrifugal force at the periphery is greater than the earth gravitational ''''g'''' and have hermetically sealed annular space partially filled with liquid.
Inventors
- 👤 Erich Lenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:57
CPC Classifications
D; D02; D02J; D02J13/00; D02J13/005; H; H05; H05B; H05B3/00; H05B3/0095; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49353
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
166 words
A heated godet or roller for the conveyance and heating thereon of filaments, and particularly adapted for operation at high rates of rotation wherein the centrifugal force at the circumference is greater than the rate of earth gravitational acceleration, which comprises an outer shell having a cylindrical filament-conveying and heating surface, an inner shell within said outer shell with an annular space therebetween, means for hermetically sealing said annular space, a liquid partially filling said annular space whereby said liquid forms a circumferential layer on the inner face of said outer shell when said godet or roller is rotating at the aforesaid rate of rotation, the vapor portion of said liquid being between said layer of liquid and the outer face Of said inner shell, and ribs on at least one of said inner and outer faces extending respectively radially outwardly or radially inwardly from said faces with the respective radially outer or radially inner ends projecting respectively into said liquid layer or said vapor space.
Claim 2
Dependent Claim
166 words
A heated godet or roller for the conveyance and heating thereon of filaments, and particularly adapted for operation at high rates of rotation wherein the centrifugal force at the circumference is greater than the rate of earth gravitational acceleration, which comprises an outer shell having a cylindrical filament-conveying and heating surface, an inner shell within said outer shell with an annular space therebetween, means for hermetically sealing said annular space, a liquid partially filling said annular space whereby said liquid forms a circumferential layer on the inner face of said outer shell when said godet or roller is rotating at the aforesaid rate of rotation, the vapor portion of said liquid being between said layer of liquid and the outer face Of said inner shell, and ribs on at least one of said inner and outer faces extending respectively radially outwardly or radially inwardly from said faces with the respective radially outer or radially inner ends projecting respectively into said liquid layer or said vapor space.
Claim 3
Dependent Claim
57 words
A godet or roller as claimed in claim 1, means for heating the inner shell, at least some of said ribs extending longitudinally on at least one of said faces in circumferentially spaced, substantially axially parallel relationship, and circumferential passages in said annular space to allow said liquid layer to distribute substantially uniformly therein between said ribs.
Claim 4
Dependent Claim
45 words
A godet or roller as claimed in claim 1, means for heating said inner shell, and at least some of said ribs extending circumferentially around said face or faces and axially extending grooves through said ribs providing communication in the longitudinal direction between said ribs.
Claim 5
Dependent Claim
26 words
A godet or roller as claimed in claim 1, wherein said ribs on at least one of said inner and outer faces are spiral, circumferential ribs.
Claim 6
Dependent Claim
55 words
A godet or roller as claimed in claim 1, wherein the longitudinal midportion of said outer wall of said inner shell has substantially parallel, longitudinally extending ribs thereon and said inner face of said outer shell has ribs extending radially inwardly from its inner face in the axial end portions of said godet or roller.
Claim 7
Dependent Claim
21 words
A godet or roller as claimed in claim 1, and an electrical resistance or conductive heating means within said inner shell.
Claim 8
Dependent Claim
30 words
A godet or roller as claimed in claim 1, wherein at least a portion of said inner shell wall is composed of a metal having high heat and electric conductance.
Claim 9
Dependent Claim
48 words
A godet or roller as claimed in claim 1, wherein said outer face of said inner shell has circumferentially spaced, substantially axially parallel ribs with longitudinally extending grooves therebetween and the inner face of said outer shell has circumferentially spaced, substantially axially parallel ribs extending into said grooves.
Claim 10
Dependent Claim
45 words
A godet or roller as claimed in claim 1, wherein said outer face of said inner shell has circumferential axially spaced ribs in the longitudinal midportion and said inner face of said outer shell has axially spaced circumferential grooves in the axial end portions thereof.
Claim 11
Dependent Claim
47 words
A godet or roller as claimed in claim 2, wherein said outer face of said inner shell has circumferentially spaced, substantially axially parallel ribs in the longitudinal midportion and said inner face of said outer shell has axially spaced circumferential grooves in the axial end portions thereof.
Claim 12
Dependent Claim
63 words
A godet or roller as claimed in claim 1, wherein said outer face of said inner shell has in the longitudinal midportion ribs extending radially outwardly therefrom with the radial outer ends spaced from said inner face of said outer shell, and ribs in the longitudinal end portions extending between and in direct contact with said inner and outer faces of said shells.
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |