US4597596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder end seal
Assignee: NICHOLSONS AIRCRAFT SEALS Ltd
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Filing: 1984-11-07
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Granted: 1986-07-01
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Expires: 2004-11-07
Abstract
Abstract For sealing the joint between a pipe end (2) and a pipe or housing (3) into which it is to be inserted, a metal sleeve (1) has a part (a) which is secured, such as by welding, to the pipe end (2), a first annular corrugation (b) and a second annular corrugation (c) which is of greater diameter than the first annular corrugation (b) and resiliently deformable into sealing engagement with the pipe or housing (3).
Inventors
- 👤 Michael J. C. Tozer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:43
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/02; Y; Y10; Y10S; Y10S277/00; Y10S277/922; Y10S285/00; Y10S285/917
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
109 words
A cylinder end sealing sleeve made of metal and attachable co-axially over the outside of a cylinder and comprising successively along its length a constant diameter part intended to contact the cylinder wall and to be secured thereto; a first radially outwardly projecting annular corrugation and a second radially outwardly projecting annular corrugation which is of increased diameter and axial length compared with the first corrugation and intended to deform resiliently into sealing engagement with a housing or tube concentric therewith with said first radially outwardly projecting corrugation being spaced radially inwardly of said housing or tube and providing flexibility between said constant diameter part and said second corrugation.
Claim 2
Dependent Claim
109 words
A cylinder end sealing sleeve made of metal and attachable co-axially over the outside of a cylinder and comprising successively along its length a constant diameter part intended to contact the cylinder wall and to be secured thereto; a first radially outwardly projecting annular corrugation and a second radially outwardly projecting annular corrugation which is of increased diameter and axial length compared with the first corrugation and intended to deform resiliently into sealing engagement with a housing or tube concentric therewith with said first radially outwardly projecting corrugation being spaced radially inwardly of said housing or tube and providing flexibility between said constant diameter part and said second corrugation.
Claim 3
Dependent Claim
123 words
A pipe end sealing sleeve made of metal and attachable co-axially over the outside of a pipe and comprising successively in the direction of the extremity of the pipe; a constant diameter part intended to contact the pipe end and to be secured thereto; a first radially outwardly projecting annular corrugation and a second radially outwardly projecting annular corrugation which is of increased diameter and axial length compared with the first corrugation and intended to deform resiliently into sealing engagement with a housing or pipe in which the pipe end is to be sealingly inserted with said first radially outwardly projecting corrugation being spaced radially inwardly of said housing or tube and providing flexibility between said constant diameter part and said second corrugation.
Claim 4
Dependent Claim
123 words
A pipe end sealing sleeve made of metal and attachable co-axially over the outside of a pipe and comprising successively in the direction of the extremity of the pipe; a constant diameter part intended to contact the pipe end and to be secured thereto; a first radially outwardly projecting annular corrugation and a second radially outwardly projecting annular corrugation which is of increased diameter and axial length compared with the first corrugation and intended to deform resiliently into sealing engagement with a housing or pipe in which the pipe end is to be sealingly inserted with said first radially outwardly projecting corrugation being spaced radially inwardly of said housing or tube and providing flexibility between said constant diameter part and said second corrugation.
Claim 5
Dependent Claim
36 words
A pipe end sealing sleeve according to claim 2 in combination with a pipe end to which it is secured and a pipe or housing in which the pipe end and the sleeve are sealingly received.
Claim 6
Dependent Claim
103 words
A cylinder end sealing sleeve made of metal and attachable co-axially over the outside of a cylinder to form a seal between said cylinder and a housing, said sealing sleeve comprising successively along its length: a constant diameter part, a first radially projecting annular corrugation, and a second radially projecting annular corrugation intended to deform resiliently into sealing engagement with one of said housing or said pipe, with said first radially projecting corrugation having a diameter intermediate the respective diameters of said constant diameter part and said second radially projecting corrugation to provide flexibility between said constant diameter part and said second corrugation.
Claim 7
Dependent Claim
103 words
A cylinder end sealing sleeve made of metal and attachable co-axially over the outside of a cylinder to form a seal between said cylinder and a housing, said sealing sleeve comprising successively along its length: a constant diameter part, a first radially projecting annular corrugation, and a second radially projecting annular corrugation intended to deform resiliently into sealing engagement with one of said housing or said pipe, with said first radially projecting corrugation having a diameter intermediate the respective diameters of said constant diameter part and said second radially projecting corrugation to provide flexibility between said constant diameter part and said second corrugation.
Claim 8
Dependent Claim
31 words
The cylinder end sealing sleeve according to claim 4 including at its constant diameter end an annular radially outwardly directed end flange formed with one or more axially projecting annular corrugations.
Claim 9
Dependent Claim
23 words
The cylinder end sealing sleeve according to claim 4, wherein said second corrugation is of increased axial length compared with said first corrugation.
Claim 10
Dependent Claim
25 words
The cylinder end sealing sleeve according to claim 4, wherein said first and second corrugations project radially outwardly with respect to said constant diameter part.
Claim 11
Dependent Claim
28 words
The cylinder end sealing sleeve according to claim 7, wherein said constant diameter part is intended to contact the wall of said cylinder and to be secured thereto.
Claim 12
Dependent Claim
25 words
The cylinder end sealing sleeve according to claim 4, wherein said first and second corrugations project radially inwardly with respect to said constant diameter part.
Claim 13
Dependent Claim
17 words
The cylinder end sealing sleeve according to claim 4, wherein said first and second corrugations are contiguous.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |