US4098427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing cap assembly for aircraft lavatory drain port
Assignee: Shaw Aero Devices Inc
•
Filing: 1977-03-17
•
Granted: 1978-07-04
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Expires: 1997-03-17
Abstract
Abstract A sealing cap assembly for aircraft lavatory drain ports includes first and second pivotal doors secured to the port in spaced sealing relationship.
Inventors
- 👤 Milton Donald Duckworth, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:48
CPC Classifications
B; B64; B64D; B64D11/00; B64D11/02; Y; Y10; Y10T; Y10T137/00; Y10T137/9247
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
92 words
A cap assembly for sealing aircraft lavatory drain ports, comprising: a first sealing door being of a construction sufficient for pivoting between an open position and a closed sealing position; a second sealing door being of a construction sufficient for pivoting between an open position and a closed sealing position in spaced sealing relationship with the first door in the closed sealing position; first door securing means connected for securing the first door in the closed position; and second door securing means connected for securing the second door in the closed position.
Claim 2
Dependent Claim
92 words
A cap assembly for sealing aircraft lavatory drain ports, comprising: a first sealing door being of a construction sufficient for pivoting between an open position and a closed sealing position; a second sealing door being of a construction sufficient for pivoting between an open position and a closed sealing position in spaced sealing relationship with the first door in the closed sealing position; first door securing means connected for securing the first door in the closed position; and second door securing means connected for securing the second door in the closed position.
Claim 3
Dependent Claim
33 words
The assembly of claim 1, further comprising: seating nub means connected to the first door for engagement with the second door when the first and second doors are in their closed positions, respectively.
Claim 4
Dependent Claim
28 words
The assembly of claim 1, wherein the first door securing means comprises: resiliently urged locking tab means connected for locking the first sealing door in the closed position.
Claim 5
Dependent Claim
23 words
The assembly of claim 3, further comprising: resilient means connected for automatically pivoting the first door from the closed to the open position.
Claim 6
Dependent Claim
16 words
The assembly of claim 4, further comprising: an elongated handle pivotally connected to the second door.
Claim 7
Dependent Claim
29 words
The assembly of claim 5 wherein the second door securing means includes claw-like means at one end of the handle for securing the second door in the closed position.
Claim 8
Dependent Claim
85 words
A cap assembly for sealing aircraft lavatory drain ports; comprising: a nipple portion; first door means connected to the nipple for moving from an open to a closed sealing position; means connected for securing the first door in the closed sealing position; second door means connected to the nipple for moving from an open to a closed sealing position in spaced sealing relationship with the first door in the closed sealing position; and means connected for securing the second door in the closed sealing position.
Claim 9
Dependent Claim
85 words
A cap assembly for sealing aircraft lavatory drain ports; comprising: a nipple portion; first door means connected to the nipple for moving from an open to a closed sealing position; means connected for securing the first door in the closed sealing position; second door means connected to the nipple for moving from an open to a closed sealing position in spaced sealing relationship with the first door in the closed sealing position; and means connected for securing the second door in the closed sealing position.
Claim 10
Dependent Claim
15 words
The assembly of claim 7 comprising a first door assembly releasably mounted on the nipple.
Claim 11
Dependent Claim
13 words
The assembly of claim 8 comprising a cradle portion connected to the nipple.
Claim 12
Dependent Claim
23 words
The assembly of claim 9 comprising means on the cradle portion for securing the first door assembly in anti-releasing engagement with the nipple.
Claim 13
Dependent Claim
27 words
The assembly of claim 8 wherein the first door assembly includes resilient means connected for automatically pivoting the first door from the closed to the open position.
Claim 14
Dependent Claim
16 words
The assembly of claim 7 wherein the second door includes an elongated handle pivotally connected thereto.
Claim 15
Dependent Claim
31 words
The assembly of claim 12 wherein the means for securing the second door includes claw-like means at one end of the handle for securing the second door in the closed position.
Claim 16
Dependent Claim
33 words
The assembly of claim 7, further comprising: seating nub means connected to the first door for engagement with the second door when the first and second doors are in their closed positions, respectively.
Claim 17
Dependent Claim
18 words
The assembly of claim 8 wherein the first door assembly includes means for rotating engagement with the nipple.
Claim 18
Dependent Claim
90 words
In combination with a lavatory drain port of the type mounted on an aircraft fuselage, the improvement comprising: first door means connected to the port for moving from an open to a closed sealing position; means connected for securing the first door in the closed sealing position; second door means connected to the port for moving from an open to a closed sealing position in spaced sealing relationship with the first door in the closed sealing position; and means connected for securing the second door in the closed sealing position.
Claim 19
Dependent Claim
90 words
In combination with a lavatory drain port of the type mounted on an aircraft fuselage, the improvement comprising: first door means connected to the port for moving from an open to a closed sealing position; means connected for securing the first door in the closed sealing position; second door means connected to the port for moving from an open to a closed sealing position in spaced sealing relationship with the first door in the closed sealing position; and means connected for securing the second door in the closed sealing position.
Claim 20
Dependent Claim
89 words
A cap assembly for sealing aircraft lavatory drain ports, comprising: first door means connected in the assembly for moving from an open to a closed sealing position; means connected in the assembly for securing the first door in the closed sealing position; second door means connected in the assembly for moving from an open to a closed sealing position in spaced sealing relationship with the first door means in the closed sealing position; and means connected in the assembly for securing the second door in the closed sealing position.
Claim 21
Dependent Claim
89 words
A cap assembly for sealing aircraft lavatory drain ports, comprising: first door means connected in the assembly for moving from an open to a closed sealing position; means connected in the assembly for securing the first door in the closed sealing position; second door means connected in the assembly for moving from an open to a closed sealing position in spaced sealing relationship with the first door means in the closed sealing position; and means connected in the assembly for securing the second door in the closed sealing position.
References Cited (Backward Citations)
US1978314A
Cited
US3302816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |