US3796977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature controlled transmission line
Assignee: Individual
•
Filing: 1971-07-26
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Granted: 1974-03-12
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Expires: 1991-07-26
Abstract
Abstract A temperature controlled microwave transmission line or waveguide tube. Heating elements are provided along the length of the line and are automatically controlled by thermostatic means to control the temperature within the line to thereby prevent condensation of moisture within the line. The temperature control is in response to temperature both within and outside the line.
Inventors
- 👤 M Elliott
- 👤 M Levin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:03
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/30
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
71 words
A hollow metal microwave transmission line having means positioned along the length of the line whereby to apply heat for controlling the temperature within the line above the dew point of the vapors contained within the line whereby to prevent condensation of vapors within the line, said line being of electrically conductive metal and its interior being unobstructed and of a cross section adapted for transmission of high frequency electromagnetic energy.
Claim 2
Dependent Claim
71 words
A hollow metal microwave transmission line having means positioned along the length of the line whereby to apply heat for controlling the temperature within the line above the dew point of the vapors contained within the line whereby to prevent condensation of vapors within the line, said line being of electrically conductive metal and its interior being unobstructed and of a cross section adapted for transmission of high frequency electromagnetic energy.
Claim 3
Dependent Claim
28 words
A transmission line as in claim 1, including separate heating elements spaced along the length of the transmission line and thermostatic control means for controlling the heating elements.
Claim 4
Dependent Claim
16 words
A transmission line as in claim 2, including separate thermostatic means controlling each individual heating element.
Claim 5
Dependent Claim
53 words
A transmission line as in claim 1, including thermostatic elements responsive to the temperature in the interior of the line and also to temperature exterior of the line, said elements having different settings which are adjusted to conditions affecting temperature within the line so as to keep the temperature above the dew point.
Claim 6
Dependent Claim
29 words
A transmission line as in claim 4, wherein the control means are arranged so that individual heating units can be energized in response to either of the thermostatic means.
Claim 7
Dependent Claim
27 words
A transmission line as in claim 1, including a jacket of insulating material surrounding the line, the heating elements being on the interior of the insulating jacket.
Claim 8
Dependent Claim
25 words
A transmission line as in claim 1, wherein the line is of a coaxial type having one cylindrical element axially disposed within another cylindrical element.
Claim 9
Dependent Claim
20 words
A transmission line as in claim 7, including a heating element positioned within the interior of the inner cylindrical element.
Claim 10
Dependent Claim
31 words
A transmission line as in claim 7, including spacer means spacing the inner cylindrical element from the outer element and thermostatic means positioned within a spacer element controlling the heating element.
Claim 11
Dependent Claim
26 words
A transmission line as in claim 6, wherein said line is encased in a further electrically conductive element which is within the jacket of insulating material.
Claim 12
Dependent Claim
36 words
A transmission line as in claim 4, wherein the element responsive to temperature on the inside of the line has a lower setting than the element responsive to the temperature on the outside of the line.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |