US3840139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessel having a sealed port
Assignee: Amalga Corp
•
Filing: 1971-10-22
•
Granted: 1974-10-08
•
Expires: 1991-10-22
Abstract
Abstract A reinforced pressure vessel lined with a flexible non-metallic material and having a sealed port in which a closure means is threaded to an intermediate boss, and the liner is sealed by pressure to the boss.
Inventors
- 👤 E Harmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:49
CPC Classifications
F; F16; F16J; F16J12/00; F17; F17C; F17C1/00; F17C1/16; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/0119; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0604; F17C2203/0612; F17C2203/0614; F17C2203/0619; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0305; F17C2205/0323; F17C2205/0329; F17C2205/0388; F17C2205/0394; F17C2209/00; F17C2209/21; F17C2209/2154; F17C2209/2163; F17C2260/00; F17C2260/01; F17C2260/011; Y; Y10; Y10S; Y10S220/00; Y10S220/23
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
A lined pressure vessel having a sealed port comprising: a. a resin impregnated fiberglass filament reinforced outer shell having an aperture therein at said port; b. a flexible plastic inner liner having a lip with an annular free end portion terminating adjacent said port; c. a rigid annular boss having an interiorally threaded opening and a contoured outer surface in contact with said outer shell, and an inner surface in contact with said liner, said surfaces being in contact with the shell and liner at the port opening; d. a valve assembly threaded exteriorally and threadably engaged in said boss and having a lower unthreaded portion; e. an annular groove in said boss member; f. an O-ring mounted in said groove; and, g. said inner liner having the annular free end portion of its lip disposed in said groove in contact with said O-ring, the pressure of the fluid pressing the liner against the O-ring.
Claim 2
Dependent Claim
155 words
A lined pressure vessel having a sealed port comprising: a. a resin impregnated fiberglass filament reinforced outer shell having an aperture therein at said port; b. a flexible plastic inner liner having a lip with an annular free end portion terminating adjacent said port; c. a rigid annular boss having an interiorally threaded opening and a contoured outer surface in contact with said outer shell, and an inner surface in contact with said liner, said surfaces being in contact with the shell and liner at the port opening; d. a valve assembly threaded exteriorally and threadably engaged in said boss and having a lower unthreaded portion; e. an annular groove in said boss member; f. an O-ring mounted in said groove; and, g. said inner liner having the annular free end portion of its lip disposed in said groove in contact with said O-ring, the pressure of the fluid pressing the liner against the O-ring.
Claim 3
Dependent Claim
20 words
A lined pressure vessel in accordance with claim 1 wherein said groove is deeper than the thickness of said O-ring.
Claim 4
Dependent Claim
22 words
A lined pressure vessel in accordance with claim 2 wherein said annular groove extends parallel to the axis of said pressure vessel.
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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |