Patent US4020307A successfully refreshed from Google Patents.
US4020307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed gas electrical switch with gas-tight housing
Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1975-06-05
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Granted: 1977-04-26
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Expires: 1995-06-05
Abstract
Abstract A compressed gas electrical switch wherein the switching point, i.e. the contact actuating mechanism is operated by means including a pivotally mounted lever which is introduced into the pressure-gas filled switch housing. For sealing the lever at the point of entry into the switch housing, the lever is surrounded partially by a sleeve connected to it and which is provided at the entry point with a spherically shaped zone. A highly elastic sealing gasket rests upon the outer surface of the sleeve, one end of the gasket including a connected flange at one end situated on the spherically shaped zone of the sleeve, and the other end of the gasket being secured to the end of the sleeve within a disc-shaped part connected in a gas-tight manner to the lever.
Inventors
- 👤 Harald Strubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:57
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/50; F16J15/52; H; H01; H01H; H01H33/00; H01H33/02; H01H33/53; H01H33/56; H01H33/565
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
227 words
In a compressed gas electrical switch structure, the combination comprising a housing and which includes therein a chamber filled with a pressurized gas, said housing being provided with a pass-through opening into said gas-pressurized chamber from the free atmosphere, a lever, said lever being pivotally mounted on intermediate its ends on said housing and extending through said pass-through opening, one end of said lever extending beyond said housing into the free atmosphere and which is connected to an operating rod and the other end extending into said gas-pressurized chamber and which is connected to a switch contact operating member, a sleeve surrounding said pivotally mounted lever and secured thereto, said sleeve including a cylindrical part which is closed at one end thereof within said gas-pressurized chamber and a spherically shaped part at the other end in contact with a complementarily configured part of said housing at said pass-through opening, a gasket of elastic material surrounding and in contact with said sleeve in said gas pressurized chamber, one end of said gasket being secured to the closed end of said sleeve so as to seal off that end of said sleeve from said gas-pressurized chamber and the other end of said gasket which overlies the spherical part of said sleeve being secured to said housing at said pass-through opening to seal off said gas-pressurized chamber from the outside.
Claim 2
Dependent Claim
227 words
In a compressed gas electrical switch structure, the combination comprising a housing and which includes therein a chamber filled with a pressurized gas, said housing being provided with a pass-through opening into said gas-pressurized chamber from the free atmosphere, a lever, said lever being pivotally mounted on intermediate its ends on said housing and extending through said pass-through opening, one end of said lever extending beyond said housing into the free atmosphere and which is connected to an operating rod and the other end extending into said gas-pressurized chamber and which is connected to a switch contact operating member, a sleeve surrounding said pivotally mounted lever and secured thereto, said sleeve including a cylindrical part which is closed at one end thereof within said gas-pressurized chamber and a spherically shaped part at the other end in contact with a complementarily configured part of said housing at said pass-through opening, a gasket of elastic material surrounding and in contact with said sleeve in said gas pressurized chamber, one end of said gasket being secured to the closed end of said sleeve so as to seal off that end of said sleeve from said gas-pressurized chamber and the other end of said gasket which overlies the spherical part of said sleeve being secured to said housing at said pass-through opening to seal off said gas-pressurized chamber from the outside.
Claim 3
Dependent Claim
31 words
Electrical switch as defined in claim 1 wherein the interior surface of said gasket facing the surface of said sleeve is provided with a sliding layer having a low friction characteristic.
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) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |