Patent US3918474A successfully refreshed from Google Patents.
US3918474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor fill tube and seal
Assignee: General Electric Co
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Filing: 1974-04-15
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Granted: 1975-11-11
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Expires: 1994-04-15
Abstract
Abstract A capacitor fill tube and seal combination is disclosed which comprises a fill tube and a plug seal device. The plug seal device comprises a short sleeve member having fill holes in the wall thereof and a threaded sealing plug or plug seat therein covering said fill holes. The sleeve is permanently mounted in a wall of a casing to project into the casing. A threaded fill tube is then threaded into the sleeve and initially engages the plug seal to move the plug further into the sleeve and away from the fill holes while at the same time sealing itself to the casing. After filling of the casing through the sleeve and fill holes, the fill tube is threaded out of the sleeve thus moving the plug seal over the fill holes and against a seal in the sleeve before the fill tube itself is unsealed from the casing.
Inventors
- 👤 Jr John A Supancic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:07
CPC Classifications
H; H01; H01G; H01G13/00; H01G13/003
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
194 words
A capacitor casing fill tube and seal means comprising in combination a. a sleeve member adapted to be positioned in one wall of a capacitor casing and projecting inside of said casing, b. an internal shoUlder means in said sleeve member and defining a pair of coaxial and threaded smaller diameter upper and larger diameter lower apertures, c. a threaded plug seal in said lower aperture, d. said sleeve member having a lateral aperture in the wall thereof which is coverable and uncoverable by rotation of a plug seal in said sleeve member, e. fill tube wrench engagement means on said plug seal and adapting said plug seal to abut said internal shoulder, f. and fluid sealing means between said plug seal and said internal shoulder and adapted to be compressed in fluid tight relationship when said plug seal is rotated to move axially in a direction towards the outside of said casing subsequent to covering said coverable and uncoverable opening, g. and a fill tube wrench means adapted to engage said fill tube wrench engagement means on said plug and rotate said plug seal to pass fluid through said opening into said casing.
Claim 2
Dependent Claim
194 words
A capacitor casing fill tube and seal means comprising in combination a. a sleeve member adapted to be positioned in one wall of a capacitor casing and projecting inside of said casing, b. an internal shoUlder means in said sleeve member and defining a pair of coaxial and threaded smaller diameter upper and larger diameter lower apertures, c. a threaded plug seal in said lower aperture, d. said sleeve member having a lateral aperture in the wall thereof which is coverable and uncoverable by rotation of a plug seal in said sleeve member, e. fill tube wrench engagement means on said plug seal and adapting said plug seal to abut said internal shoulder, f. and fluid sealing means between said plug seal and said internal shoulder and adapted to be compressed in fluid tight relationship when said plug seal is rotated to move axially in a direction towards the outside of said casing subsequent to covering said coverable and uncoverable opening, g. and a fill tube wrench means adapted to engage said fill tube wrench engagement means on said plug and rotate said plug seal to pass fluid through said opening into said casing.
Claim 3
Dependent Claim
186 words
A capacitor casing fill tube and seal means comprising in combination a. a sleeve member adapted to be positioned in one wall of a capacitor casing and projecting inside of said casing, b. an internal shoulder means in said sleeve member defining a pair of coaxial and threaded upper and lower apertures, c. said sleeve member having a transverse opening therethrough which opens from the interior of said casing into said lower aperture, d. a threaded plug seal in said lower aperture and adapted to cover and uncover said transverse opening, e. fill tube wrench engagement means on said plug seal and adapting said plug seal to abut said internal shoulder, f. and fluid sealing means between said plug seal and shoulder and adapted to be compressed in fluid tight relationship when said plug seal is rotated to move axially in a direction towards the outside of said casing subsequent to covering said transverse opening, g. and a fill tube wrench means adapted to engage said fill tube wrench engaging means on said plug and rotate said plug seal to pass fluid through said transverse opening.
Claim 4
Dependent Claim
186 words
A capacitor casing fill tube and seal means comprising in combination a. a sleeve member adapted to be positioned in one wall of a capacitor casing and projecting inside of said casing, b. an internal shoulder means in said sleeve member defining a pair of coaxial and threaded upper and lower apertures, c. said sleeve member having a transverse opening therethrough which opens from the interior of said casing into said lower aperture, d. a threaded plug seal in said lower aperture and adapted to cover and uncover said transverse opening, e. fill tube wrench engagement means on said plug seal and adapting said plug seal to abut said internal shoulder, f. and fluid sealing means between said plug seal and shoulder and adapted to be compressed in fluid tight relationship when said plug seal is rotated to move axially in a direction towards the outside of said casing subsequent to covering said transverse opening, g. and a fill tube wrench means adapted to engage said fill tube wrench engaging means on said plug and rotate said plug seal to pass fluid through said transverse opening.
Claim 5
Dependent Claim
11 words
shoulder means on said fill tube facing the said wrench end,
Claim 6
Dependent Claim
11 words
shoulder means on said fill tube facing the said wrench end,
Claim 7
Dependent Claim
15 words
a fixed further fluid sealing means on said shoulder means and facing said wrench end,
Claim 8
Dependent Claim
15 words
a fixed further fluid sealing means on said shoulder means and facing said wrench end,
Claim 9
Dependent Claim
40 words
The invention as recited in claim 2 wherein said internal shoulder means defines an upper smaller diameter threaded aperture and a lower larger diameter threaded aperture, and said fluid sealing means is a ring seal positioned on said shoulder means.
Claim 10
Dependent Claim
17 words
The invention as recited in claim 2 wherein said sleeve is flush mounted in a capacitor casing.
Claim 11
Dependent Claim
33 words
a threaded shank part of said fill tube adajAcent said further fluid sealing means and extending toward said wrench end and adapted to threadedly engage said upper threaded aperture of said sleeve member,
Claim 12
Dependent Claim
33 words
a threaded shank part of said fill tube adajAcent said further fluid sealing means and extending toward said wrench end and adapted to threadedly engage said upper threaded aperture of said sleeve member,
Claim 13
Dependent Claim
21 words
and wrench means at the end of said fill tube engaging said fill tube wrench engaging means on said plug seal,
Claim 14
Dependent Claim
21 words
and wrench means at the end of said fill tube engaging said fill tube wrench engaging means on said plug seal,
Claim 15
Dependent Claim
29 words
The invention as recited in claim 2 wherein the pitch of the thread of said upper aperture is different than the pitch of the thread of said lower aperture.
Claim 16
Dependent Claim
42 words
said wrench means having openings in said shank part adapted to provide fluid flow communication through said tube and said transverse opening while said wrench is in engagement with said plug seal, and said transverse opening is uncovered by said plug seal.
Claim 17
Dependent Claim
42 words
said wrench means having openings in said shank part adapted to provide fluid flow communication through said tube and said transverse opening while said wrench is in engagement with said plug seal, and said transverse opening is uncovered by said plug seal.
Claim 18
Dependent Claim
169 words
A capacitor casing fill tube and seal means comprising in combination a. a sleeve member adapted to be positioned in one wall of a capacitor casing and projecting inside of said casing, b. an internal shoulder means in said sleeve member defining a pair of coaxial and threaded larger diameter lower and smaller diameter upper apertures, c. said sleeve member having a transverse opening therethrough which opens from the interior of said casing into said lower aperture, d. a threaded plug seal in said lower aperture and adapted to cover and uncover said transverse opening, e. fill tube wrench engagement means on said plug seal and adapting said plug seal to abut said internal shoulder, f. fluid sealing means between said plug seal and said internal shoulder and adapted to be compressed in fluid tight relationship when said plug seal is rotated to move axially in a direction towards the outside of said casing subsequent to covering said transverse opening, g. and a fill tube wrench means therefore comprising
Claim 19
Dependent Claim
169 words
A capacitor casing fill tube and seal means comprising in combination a. a sleeve member adapted to be positioned in one wall of a capacitor casing and projecting inside of said casing, b. an internal shoulder means in said sleeve member defining a pair of coaxial and threaded larger diameter lower and smaller diameter upper apertures, c. said sleeve member having a transverse opening therethrough which opens from the interior of said casing into said lower aperture, d. a threaded plug seal in said lower aperture and adapted to cover and uncover said transverse opening, e. fill tube wrench engagement means on said plug seal and adapting said plug seal to abut said internal shoulder, f. fluid sealing means between said plug seal and said internal shoulder and adapted to be compressed in fluid tight relationship when said plug seal is rotated to move axially in a direction towards the outside of said casing subsequent to covering said transverse opening, g. and a fill tube wrench means therefore comprising
Claim 20
Dependent Claim
70 words
The invention as recited in claim 6 wherein said wrench means comprises circumferentially spaced axially extending portions on said shank part adapted to mechanically interfit with said wrench engagement means on said plug seal, said extending portions being defined and spaced to provide fluid flow communication through said tube while said wrench means is in engagement with said plug seal, and said transverse opening is uncovered by said plug seal.
References Cited (Backward Citations)
US3258666A
Cited
US3425466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |