US4463329A
Expired / Lapsed
US
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Dielectric waveguide
Assignee: Junkosha Co Ltd
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Filing: 1982-01-15
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Granted: 1984-07-31
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Expires: 2002-01-15
Abstract
Abstract A dielectric waveguide in cable form fabricated from polytetrafluoroethylene. An embodiment of cable is a composite of partially sintered PTFE and sintered and unsintered expanded PTFE arranged in such a fashion that the specific gravity of cable decreases from the core to the outer surface.
Inventors
- 👤 Hirosuke Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:19
CPC Classifications
H; H01; H01P; H01P11/00; H01P11/001; H01P11/006; H01P3/00; H01P3/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
36 words
A method for the transmission of electromagnetic waves comprising transmitting said waves using a dielectric waveguide wherein said waveguide comprises a shaped article of porous PTFE having a specific gravity between about 1.45 and about 1.9.
Claim 2
Independent Claim
36 words
A method for the transmission of electromagnetic waves comprising transmitting said waves using a dielectric waveguide wherein said waveguide comprises a shaped article of porous PTFE having a specific gravity between about 1.45 and about 1.9.
Claim 3
Dependent Claim
19 words
The method of claim 1 in which said shaped article is unsintered PTFE in the form of a rod.
Claim 4
Dependent Claim
20 words
The method of claim 1 in which said shaped article is partially sintered PTFE in the form of a rod.
Claim 5
Dependent Claim
32 words
A dielectric waveguide for the transmission of electromagnetic waves comprising an elongated shaped article having one or more layers of expanded, porous polytetrafluoroethylene extending radially outwardly from the center of said waveguide.
Claim 6
Dependent Claim
32 words
A dielectric waveguide for the transmission of electromagnetic waves comprising an elongated shaped article having one or more layers of expanded, porous polytetrafluoroethylene extending radially outwardly from the center of said waveguide.
Claim 7
Dependent Claim
27 words
The dielectric waveguide of claim 4 in which the specific gravity of said layers varies in a stepwise fashion from the innermost layer to the outermost layer.
Claim 8
Dependent Claim
26 words
The dielectric waveguide of claim 4 in which the specific gravity of said layers varies in a continuous fashion from the innermost to the outermost layer.
Claim 9
Dependent Claim
16 words
The dielectric waveguide of claim 4, 5 or 6 in which said expanded polytetrafluoroethylene is unsintered.
Claim 10
Dependent Claim
17 words
The dielectric waveguide of claim 4, 5 or 6 in which said expanded polytetrafluoroethylene is partially sintered.
Claim 11
Dependent Claim
17 words
The dielectric waveguide of claim 4, 5 or 6 in which said expanded polytetrafluoroethylene is fully sintered.
Claim 12
Dependent Claim
28 words
The dielectric waveguide of claim 4, 5 or 6 in which said layers of expanded polytetrafluoroethylene include a combination of unsintered, partially sintered and fully sintered expanded polytetrafluoroethylene.
Claim 13
Dependent Claim
35 words
A dielectric waveguide for the transmission of electromagnetic waves comprising a shaped article having: (a) a core of polytetrafluoroethylene; and (b) one or more layers of expanded, porous polytetrafluoroethylene overwrapped on or around said core.
Claim 14
Dependent Claim
35 words
A dielectric waveguide for the transmission of electromagnetic waves comprising a shaped article having: (a) a core of polytetrafluoroethylene; and (b) one or more layers of expanded, porous polytetrafluoroethylene overwrapped on or around said core.
Claim 15
Dependent Claim
28 words
The dielectric waveguide of claim 11 in which the specific gravity of substantially all or all of said layers is lower than the specific gravity of said core.
Claim 16
Dependent Claim
19 words
The dielectric waveguide of claim 11 in which the specific gravity of said core is less than about 1.9.
Claim 17
Dependent Claim
27 words
The dielectric waveguide of claim 11 in which the specific gravity of said layers varies in a stepwise fashion from the innermost layer to the outermost layer.
Claim 18
Dependent Claim
26 words
The dielectric waveguide of claim 11 in which the specific gravity of said layers varies in a continuous fashion from the innermost to the outermost layer.
Claim 19
Dependent Claim
23 words
The dielectric waveguide of claims 11, 12, 13, 14 or 15 in which said shaped article is in the form of a rod.
Claim 20
Dependent Claim
19 words
The dielectric waveguide of claims 11, 12, 13, 14 or 15 in which said core is expanded, porous polytetrafluoroethylene.
Claim 21
Dependent Claim
15 words
The dielectric waveguide of claim 4 or 11 which is covered with a metal jacket.
Claim 22
Dependent Claim
15 words
The dielectric waveguide of claim 4 or 11 which is covered with a PVC jacket.
Claim 23
Dependent Claim
31 words
The dielectric waveguide of claim 1 and/or a junction therefor comprising unsintered or partially sintered PTFE, the dielectric constant of said waveguide and/or junction being changed in the longitudinal direction thereof.
Claim 24
Dependent Claim
20 words
The product of claim 20 in which the dielectric constant changes in a stepwise fashion in the longitudinal direction thereof.
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) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |