US3904995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra high frequency impedance adjustment means
Assignee: United States Department of the Navy
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Filing: 1974-07-10
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Granted: 1975-09-09
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Expires: 1994-07-10
Abstract
Abstract An improved cavity type ultra high frequency impedance matching means in which tuning is accomplished by providing the inner and outer conductors of a feed line having a relatively small diameter as compared to an associated tuning cavity means and in which the shorting disc comprises radially moveable, spring biased wedge means for releasably locking the shorting disc in desired adjusted position and release operating means connected to release the wedged portions of the disc and sliding the disc to a new adjusted position for impedance adjustment.
Inventors
- 👤 Edwin N Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:21
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/24; H01P1/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
156 words
An improved cavity type ultra high frequency impedance adjustment means comprising: wave guide means having outer and inner concentric walls defining a tuning cavity therebetween, a coaxial feed transmission line having inner and outer conductors and having a relatively small cross-section in comparison to said wave guide means, said coaxial feed line terminated within said wave guide means to form thereof an incoming section and a tuning section with said incoming section outer conductor connected to said outer wave guide means wall and said tuning section outer conductor connected to said inner wave guide means wall, a shorting disc slidably connected between said inner and outer conductors of said tuning section of said feed line, said shorting disc comprising radially moveable spring-biased wedge means for locking said shorting disc in fixed adjusted seated position, and operating means connected to said spring to release said wedge bias when said disc is to be moved for impedance adjustment.
Claim 2
Dependent Claim
156 words
An improved cavity type ultra high frequency impedance adjustment means comprising: wave guide means having outer and inner concentric walls defining a tuning cavity therebetween, a coaxial feed transmission line having inner and outer conductors and having a relatively small cross-section in comparison to said wave guide means, said coaxial feed line terminated within said wave guide means to form thereof an incoming section and a tuning section with said incoming section outer conductor connected to said outer wave guide means wall and said tuning section outer conductor connected to said inner wave guide means wall, a shorting disc slidably connected between said inner and outer conductors of said tuning section of said feed line, said shorting disc comprising radially moveable spring-biased wedge means for locking said shorting disc in fixed adjusted seated position, and operating means connected to said spring to release said wedge bias when said disc is to be moved for impedance adjustment.
Claim 3
Dependent Claim
73 words
Apparatus according to claim 1 wherein said spring biased wedge means includes an annulus split to form inclined adjacent wedging surfaces and segmented to form combinations of inner and outer annulus wedge segments, a tension spring for each combination of wedging segments, said segments being recessed to hold said tension spring in captive position to bias said wedge segments in wedging position respectivelY against said outer and inner conductors of said feed line.
Claim 4
Dependent Claim
80 words
Apparatus according to claim 1 wherein said spring biasing wedge means includes an annulus segmented to form outer shoes, each shoe being recessed to form a V-shaped inner surface forming upper and lower wedging surfaces, pairs of upper and lower inner shoes having cam surfaces mating respectively with said upper and lower annulus wedging surfaces for sliding thereon, compression spring means, said sliding wedges being recessed to hold said compression spring captive between said sliding upper and lower inner shoes.
Claim 5
Dependent Claim
26 words
Apparatus according to claim 3 including spring-biased finger tips provided on said outer shoes to improve extent and reliability of satisfactory contact with said outer conductor.
Claim 6
Dependent Claim
79 words
Apparatus according to claim 1 wherein said spring-biased wedge means includes an annulus segmented to form inner shoes, each shoe being recessed to form a V-shaped outer surface forming upper and lower wedging surfaces, pairs of upper and lower outer shoes having cam surfaces mating respectively with said upper and lower annulus wedging surfaces for sliding thereon, compression spring means, said sliding wedges being recessed to hold said compression spring captive between said sliding upper and lower outer shoes.
Claim 7
Dependent Claim
99 words
Apparatus according to claim 1 wherein said spring biased wedge means includes an annulus having an outer and an inner peripheral V-shaped recess, pairs of upper and lower inner shoes having cam surfaces mating with said inner peripheral V-shaped recess and pairs of upper and lower outer shoes having cam surfaces mating with said outer peripheral V-shaped recess, forming double opposed wedge trains are for contacting said inner conductor and are for contacting said outer conductor, a compression spring means for each of said shoe pairs each pair of shoes being recessed to hold its associated compression spring captive.
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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |