Patent US3727018A successfully refreshed from Google Patents.
US3727018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk vacuum power interrupter
Assignee: Allis Chalmers Corp
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Filing: 1971-09-16
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Granted: 1973-04-10
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Expires: 1991-09-16
Abstract
Abstract A vacuum circuit interrupter comprising a cylindrical envelope having upper and lower ceramic or glass closure insulator plates through which axially aligned relatively movable contact rods having impedance means comprising a pair of relatively shallow cylindrical metallic shields that are concentrically affixed to associated ones of the contact rods.
Inventors
- 👤 H Wesoloski
- 👤 A Arns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:36
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H33/662; H01H33/66207; H01H2033/66223; H01H33/66261; H01H2033/66292
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
201 words
In a vacuum circuit interrupter; an envelope comprising identical first and second metallic units each constructed and arranged as metallic rings having radial inwardly extending flanges at one end and radial outwardly extending flanges at the opposite ends, said units being joined with their outwardly extending flanges in abutting sealed relationship; a first glass insulator flat end plate closure disposed in the free end of said first unit in bonded sealed engagement with the radial inwardly extending flange thereof; a second glass insulator flat end plate closure disposed in the free end of said second unit in bonded sealed engagement with the radial inwardly extending flange thereof; a first contact rod extending into said first unit through an axial opening in said first glass insulator end plate closure in sealed relationship therewith; a second contact rod extending into said second unit through an axial opening in said second glass insulator end plate closure; means operable to effect a seal between said second contact rod and the axial opening in said second glass insulator end plate closure through which said contact rod extends in a manner to permit said second contact rod to move axially in a contact make-or-break path of travel.
Claim 2
Dependent Claim
201 words
In a vacuum circuit interrupter; an envelope comprising identical first and second metallic units each constructed and arranged as metallic rings having radial inwardly extending flanges at one end and radial outwardly extending flanges at the opposite ends, said units being joined with their outwardly extending flanges in abutting sealed relationship; a first glass insulator flat end plate closure disposed in the free end of said first unit in bonded sealed engagement with the radial inwardly extending flange thereof; a second glass insulator flat end plate closure disposed in the free end of said second unit in bonded sealed engagement with the radial inwardly extending flange thereof; a first contact rod extending into said first unit through an axial opening in said first glass insulator end plate closure in sealed relationship therewith; a second contact rod extending into said second unit through an axial opening in said second glass insulator end plate closure; means operable to effect a seal between said second contact rod and the axial opening in said second glass insulator end plate closure through which said contact rod extends in a manner to permit said second contact rod to move axially in a contact make-or-break path of travel.
Claim 3
Dependent Claim
30 words
A vacuum circuit interrupter according to claim 12 including means operable to engage said second contact rod for limiting the axial movement thereof in a circuit interrupting direction of movement.
Claim 4
Dependent Claim
27 words
A vacuum circuit interrupter according to claim 13 including means operable to prevent rotation of said movable second contact rod without interfering with the axial movement thereof.
Claim 5
Dependent Claim
22 words
A vacuum circuit interrupter according to claim 14 incLuding means carried by said interrupter for mounting said interrupter to an associated structure.
Claim 6
Dependent Claim
212 words
In a vacuum circuit interrupter; a rigid envelope comprising identical first and second metallic units each having both ends open, said units being secured to each other in coaxial sealed relationship; a first insulating flat end plate closure secured in sealed relationship in the open free end of said first envelope unit, said first insulating end plate closure having an axial opening therein; a first contact rod extending into said first envelope unit through the axial opening in said first end plate closure; sealing means to seal the space between said first contact rod and the opening in said first end plate closure through which said first contact rod extends; a second insulating end closure secured in sealed relationship in the open free end of said second envelope unit, said first insulating end plate closure having an axial opening therein; a second contact rod extending into said second unit through the axial opening in said second end plate closure; an axial deflectable bellows operatively arranged to seal the space between said second contact rod and the opening in said second end plate closure through which said second contact rod extends in a manner to permit said second contact rod to move axially relative to said first contact rod in contact make-and-break operations.
Claim 7
Dependent Claim
212 words
In a vacuum circuit interrupter; a rigid envelope comprising identical first and second metallic units each having both ends open, said units being secured to each other in coaxial sealed relationship; a first insulating flat end plate closure secured in sealed relationship in the open free end of said first envelope unit, said first insulating end plate closure having an axial opening therein; a first contact rod extending into said first envelope unit through the axial opening in said first end plate closure; sealing means to seal the space between said first contact rod and the opening in said first end plate closure through which said first contact rod extends; a second insulating end closure secured in sealed relationship in the open free end of said second envelope unit, said first insulating end plate closure having an axial opening therein; a second contact rod extending into said second unit through the axial opening in said second end plate closure; an axial deflectable bellows operatively arranged to seal the space between said second contact rod and the opening in said second end plate closure through which said second contact rod extends in a manner to permit said second contact rod to move axially relative to said first contact rod in contact make-and-break operations.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |