US3613050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed coaxial connecting means
Assignee: Bunker Ramo Corp
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Filing: 1969-06-11
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Granted: 1971-10-12
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Expires: 1989-06-11
Abstract
Abstract A hermetically sealed coaxial four-conductor feedthrough connecting device having glass insulating rings heat-bonded between the conductors. The outer conductor is chosen to have a thermal coefficient of expansion sufficiently greater than that of the glass rings and inner conductors so as to cause a resultant compressive force to be exerted thereon which is sufficient to achieve reliable hermetic sealing of the device despite any mismatching between the thermal coefficients of expansion of the glass and the conductors.
Inventors
- 👤 Robert L Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:05
CPC Classifications
H; H01; H01R; H01R24/00; H01R24/38; H01R24/40; H01R24/56; H01R24/562; H01R13/00; H01R13/46; H01R13/53; Y; Y10; Y10S; Y10S439/00; Y10S439/901; Y10S439/904; Y10S439/905
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
208 words
Hermetically sealed coaxial connecting means comprising: a cylindrical outer metal shell, a plurality of metal conductors disposed within said shell coaxial with each other and with said shell, said conductors including at least two spaced coaxial shells and cylindRical member at the center thereof, a plurality of glass members interposed between respective ones of said conductors and said shell for providing electrical insulation therebetween, said glass members including at least three glass rings having their inner and outer surfaces heatbonded to respective adjacent surfaces of said conductors and said outer shell, said outer metal shell and said conductors and said glass members being constructed and arranged to provide a cylindrically shaped feed-through receptacle having opposite connector plug-receiving ends, of like construction and a connector plug for mating with each plug-receivingg end of said receptacle, said shell having a sufficiently large thermal coefficient of expansion with respect to those of said conductors and said glass members so as to cause a resultant compressive force to be exerted on said conductors and said glass members after the cooling following said heat-bonding operations to thereby provide a high quality hermetic seal therebetween despite differences in the expansions and contractions of said conductors and said glass members occurring during said heatbonding operations.
Claim 2
Dependent Claim
208 words
Hermetically sealed coaxial connecting means comprising: a cylindrical outer metal shell, a plurality of metal conductors disposed within said shell coaxial with each other and with said shell, said conductors including at least two spaced coaxial shells and cylindRical member at the center thereof, a plurality of glass members interposed between respective ones of said conductors and said shell for providing electrical insulation therebetween, said glass members including at least three glass rings having their inner and outer surfaces heatbonded to respective adjacent surfaces of said conductors and said outer shell, said outer metal shell and said conductors and said glass members being constructed and arranged to provide a cylindrically shaped feed-through receptacle having opposite connector plug-receiving ends, of like construction and a connector plug for mating with each plug-receivingg end of said receptacle, said shell having a sufficiently large thermal coefficient of expansion with respect to those of said conductors and said glass members so as to cause a resultant compressive force to be exerted on said conductors and said glass members after the cooling following said heat-bonding operations to thereby provide a high quality hermetic seal therebetween despite differences in the expansions and contractions of said conductors and said glass members occurring during said heatbonding operations.
Claim 3
Dependent Claim
28 words
The invention in accordance with claim 1, wherein the coefficient of thermal expansion of said conductors is at least 20 percent larger than that of said glass members.
Claim 4
Dependent Claim
29 words
The invention in accordance with claim 2, wherein the coefficient of thermal expansion of said outer metal shell is at least twice as large as that of said conductors.
Claim 5
Dependent Claim
54 words
The invention in accordance with claim 3, wherein said outer metal shell is stainless steel, said conductors are an alloy containing 20 percent nickel, 17 percent cobalt, 0.2 percent manganese, and the balance iron, and said glass members are a low electrical loss borosilicate glass having a coefficient of thermal expansion of approximately 32.
Claim 6
Dependent Claim
41 words
The invention in accordance with claim 1, wherein said connector plug includes electrically insulated coaxial conductors wherein to make electrical connection with corresponding coaxial conductors in said receptacle when said connector plug is mated with a plug-receiving end of said receptacle.
Claim 7
Dependent Claim
20 words
The invention in accordance with claim 5, wherein a triaxial cable is mechanically and electrically coupled to said connector plug.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |