US3812910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive seal pitless well adapter
Assignee: Individual
•
Filing: 1972-11-20
•
Granted: 1974-05-28
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Expires: 1992-11-20
Abstract
Abstract A pipe connector having a duct therethrough for connecting a lateral pipe to a well casing and having an inner casing connector provided with a tubular stem which extends through a hole in the well casing wall. Mounted on this stem externally of the casing wall are a casing contacting O-ring gasket, a follower washer, a stem O-ring gasket and a compression nut which compresses the gaskets into fluid - tight engagement with the casing wall and the stem upon which they are mounted. Also annular grooves to partially seat these O-ring gaskets are provided in the faces of the follower washer and/or the gasket confronting face of the nut.
Inventors
- 👤 W Wellstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:21
CPC Classifications
F; F16; F16L; F16L5/00; F16L5/02; F16L5/12; E; E21; E21B; E21B33/00; F16L41/00; F16L41/08; F16L41/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
198 words
A means for sealing side duct in a hole in a casing comprising: A. a stem member extending throuGh the hole in the casing having at one end a flange portion contacting one side of said casing around the hole and at its other end an outside threaded portion extending short of the other side of said casing to provide an intermediate unthreaded portion, B. a first O-ring type gasket around the central unthreaded portion of said stem member contacting the other side of said casing, C. a washer member having a seat for said first gasket, D. a second O-ring type gasket around the central unthreaded portion of said stem member contacting the opposite side of said washer member from said first gasket, E. a nut member threaded on said threaded portion of said stem having annular unthreaded means projecting inwardly over said unthreaded portion for engaging contact with both said second gasket and said washer member for forcing both said first gasket against said casing and said second gasket against said washer member and said central unthreaded portion of said stem, and F. a seat for said second gasket in one of its two contacting members.
Claim 2
Dependent Claim
198 words
A means for sealing side duct in a hole in a casing comprising: A. a stem member extending throuGh the hole in the casing having at one end a flange portion contacting one side of said casing around the hole and at its other end an outside threaded portion extending short of the other side of said casing to provide an intermediate unthreaded portion, B. a first O-ring type gasket around the central unthreaded portion of said stem member contacting the other side of said casing, C. a washer member having a seat for said first gasket, D. a second O-ring type gasket around the central unthreaded portion of said stem member contacting the opposite side of said washer member from said first gasket, E. a nut member threaded on said threaded portion of said stem having annular unthreaded means projecting inwardly over said unthreaded portion for engaging contact with both said second gasket and said washer member for forcing both said first gasket against said casing and said second gasket against said washer member and said central unthreaded portion of said stem, and F. a seat for said second gasket in one of its two contacting members.
Claim 3
Dependent Claim
27 words
A side duct connector according to claim 1 wherein washer member has a seat for said resilient sealing means and said sealing means projects beyond said seat.
Claim 4
Dependent Claim
17 words
A side duct connector according to claim 1 wherein said resilient sealing means has an elliptical cross-section.
Claim 5
Dependent Claim
16 words
A side duct connector according to claim 1 wherein said seat is in said washer member.
Claim 6
Dependent Claim
16 words
A side duct connector according to claim 1 wherein said seat is in said nut member.
References Cited (Backward Citations)
US978504A
Cited
US1364814A
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US2689611A
Cited
US2851106A
Cited
US3403730A
Cited
US3467181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |