US5687976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Symmetrical gasket for a pipe joint
Assignee: Vertex Inc
•
Filing: 1996-05-10
•
Granted: 1997-11-18
•
Expires: 2016-05-10
Abstract
Abstract A pipe joint includes an outer pipe and an inner pipe inserted into the outer pipe. One of the outer pipe and the inner pipe includes an annular groove and a gasket is positioned in the groove to provide a seal between the outer pipe and the inner pipe. The gasket includes an annular gasket body formed of a resilient material with the gasket body having a centerline. A projection extends radially away from the gasket body. The projection is so located on the gasket body that it is bisected by the centerline thereof. An annular bore extends in the gasket body. The bore is spaced from the projection and is so located in the gasket body that it is bisected by the centerline thereof. The gasket is symmetrical around an axial centerline and is therefore insensitive to axial orientation. It is meant for sealing an annular space in a bell and spigot pipe joint and is capable of sealing against both internal and external pressures and internal and external vacuums.
Inventors
- 👤 William C. Andrick
- 👤 Salvatore R. Brugnano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:43
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/021; F16J15/022; F16J15/024; F16J15/027; F16L; F16L25/00; F16L25/0036; F16L25/0054; F16L47/00; F16L47/06; F16L47/065; F16L47/08
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
136 words
A pipe joint comprising: an outer pipe; an inner pipe inserted into said outer pipe, wherein one of said outer pipe and said inner pipe comprises an annular groove; and, a gasket positioned within said annular groove and adapted to provide a seal between said outer pipe and said inner pipe, said gasket comprising: an annular gasket body formed of a resilient material, said gasket body having a centerline and including a base adapted to sealingly engage said groove, a projection extending radially from said gasket body, said projection being so located on said gasket body that it is bisected by said centerline thereof, and an annular bore extending in said gasket body, said bore being spaced from said projection and being so located in said gasket body that it is bisected by said centerline thereof.
Claim 2
Dependent Claim
136 words
A pipe joint comprising: an outer pipe; an inner pipe inserted into said outer pipe, wherein one of said outer pipe and said inner pipe comprises an annular groove; and, a gasket positioned within said annular groove and adapted to provide a seal between said outer pipe and said inner pipe, said gasket comprising: an annular gasket body formed of a resilient material, said gasket body having a centerline and including a base adapted to sealingly engage said groove, a projection extending radially from said gasket body, said projection being so located on said gasket body that it is bisected by said centerline thereof, and an annular bore extending in said gasket body, said bore being spaced from said projection and being so located in said gasket body that it is bisected by said centerline thereof.
Claim 3
Dependent Claim
58 words
The pipe joint of claim 1 wherein said gasket further comprises: a first recess formed in said gasket body adjacent said projection, said first recess being located on a first side of said centerline; and, a second recess formed in said gasket body adjacent said projection, said second recess being located on a second side of said centerline.
Claim 4
Dependent Claim
31 words
The pipe joint of claim 2 wherein said gasket body further comprises: a first compression point located on said protection and wherein said first compression point is bisected by said centerline.
Claim 5
Dependent Claim
68 words
The pipe joint of claim 3 wherein said gasket body further comprises: a second compression point located on said periphery of said gasket body on said first side of said centerline in a spaced manner from said first recess; and a third compression point located on said outer periphery of said gasket body on said second side of said centerline in a spaced manner from said second recess.
Claim 6
Dependent Claim
54 words
The pipe joint of claim 1 wherein said gasket further comprises: a first lip located on an outer periphery of said gasket body and positioned on a first side of said centerline; and, a second lip located on said outer periphery of said gasket body and positioned on a second side of said centerline.
Claim 7
Dependent Claim
50 words
The pipe joint of claim 5 wherein said gasket body further comprises a second annular bore extending in said gasket body, said second bore being spaced from said first bore and from said projection and being so located on said gasket body that it is bisected by said centerline thereof.
Claim 8
Dependent Claim
52 words
The pipe joint of claim 6 wherein said gasket further comprises: a first recess formed in said gasket body, said first recess being located on a first side of said centerline; and, a second recess formed in said gasket body, said second recess being located on a second side of said centerline.
Claim 9
Dependent Claim
67 words
The pipe joint of claim 7 wherein said gasket body further comprises: a third lip located on said outer periphery of said gasket body on said first side of said centerline in a spaced manner from said first lip; and, a fourth lip located on said outer periphery of said gasket body on said second side of said centerline in a spaced manner from said second lip.
Claim 10
Dependent Claim
97 words
A non-directional gasket which is insensitive to axial gasket orientation, comprising: an annular gasket body formed of a resilient material, said gasket body having an axial centerline and a base adapted to sealingly engage an annular groove on a pipe; a projection extending radially from said gasket body, said projection being so located on said gasket body that it is bisected by said centerline thereof; and, an annular bore located in said gasket body, said bore being spaced from said projection and being so positioned in said gasket body that it is bisected by said centerline thereof.
Claim 11
Dependent Claim
97 words
A non-directional gasket which is insensitive to axial gasket orientation, comprising: an annular gasket body formed of a resilient material, said gasket body having an axial centerline and a base adapted to sealingly engage an annular groove on a pipe; a projection extending radially from said gasket body, said projection being so located on said gasket body that it is bisected by said centerline thereof; and, an annular bore located in said gasket body, said bore being spaced from said projection and being so positioned in said gasket body that it is bisected by said centerline thereof.
Claim 12
Dependent Claim
54 words
The gasket of claim 9 further comprising: a first recess formed in said gasket body adjacent said projection, said first recess being located on a first side of said centerline; and, a second recess formed in said gasket body adjacent said projection, said second recess being located on a second side of said centerline.
Claim 13
Dependent Claim
26 words
The gasket of claim 10 further comprising: a first compression point located on said protection and wherein said first compression point is bisected by said centerline.
Claim 14
Dependent Claim
63 words
The gasket of claim 11 further comprising: a second compression point located on said periphery of said gasket body on said first side of said centerline in a spaced manner from said first recess; and a third compression point located on said outer periphery of said gasket body on said second side of said centerline in a spaced manner from said second recess.
Claim 15
Dependent Claim
50 words
The gasket of claim 9 further comprising: a first lip located on an outer periphery of said gasket body and positioned on a first side of said centerline; and, a second lip located on said outer periphery of said gasket body and positioned on a second side of said centerline.
Claim 16
Dependent Claim
45 words
The gasket of claim 13 further comprising a second annular bore extending in said gasket body, said second bore being spaced from said first bore and from said projection and being so located on said gasket body that it is bisected by said centerline thereof.
Claim 17
Dependent Claim
62 words
The gasket of claim 13 further comprising: a third lip located on an outer periphery of said gasket body on said first side of said centerline in a spaced manner from said first lip; and, a fourth lip located on said outer periphery of said gasket body on said second side of said centerline in a spaced manner from said second lip.
Claim 18
Dependent Claim
113 words
A gasket for sealing an annular space in a bell-and-spigot pipe joint, comprising: an annular elastomeric web having an inner peripheral surface formed to sealingly engage an outer periphery of an associated spigot, said web having a centerline; an elastomeric protrusion projecting radially outward from said web, said protrusion being bisected by said centerline and having in radial cross section a tapered stem with opposite sides symmetrical about said centerline and terminating in an enlarged toroidal rim, said protrusion deflecting to engage an inner periphery of an associated bell; and, wherein the gasket can be installed in and associated pipe joint in either direction along a longitudinal axis of the associated pipe joint.
Claim 19
Dependent Claim
113 words
A gasket for sealing an annular space in a bell-and-spigot pipe joint, comprising: an annular elastomeric web having an inner peripheral surface formed to sealingly engage an outer periphery of an associated spigot, said web having a centerline; an elastomeric protrusion projecting radially outward from said web, said protrusion being bisected by said centerline and having in radial cross section a tapered stem with opposite sides symmetrical about said centerline and terminating in an enlarged toroidal rim, said protrusion deflecting to engage an inner periphery of an associated bell; and, wherein the gasket can be installed in and associated pipe joint in either direction along a longitudinal axis of the associated pipe joint.
Claim 20
Dependent Claim
41 words
The gasket of claim 16 wherein said gasket further comprises an annular bore extending in said elastomeric web, said bore being spaced from said projection and being so located on said elastomeric web that it is bisected by said centerline thereof.
Claim 21
Dependent Claim
15 words
The gasket of claim 16 wherein said protrusion comprises a mushroom-shaped member in cross section.
Claim 22
Dependent Claim
27 words
The gasket of claim 18 wherein said elastomeric web further comprises first and second lips, said lips being located on a respective side of said mushroom-shaped member.
Claim 23
Dependent Claim
34 words
The gasket of claim 16 wherein said protrusion comprises: a pair of wings symmetrically located on a respective side of said centerline; and, a radially outwardly projecting rib which is bisected by said centerline.
Claim 24
Dependent Claim
158 words
A pipe joint which can accommodate both internal pressures and external pressures, said pipe joint comprising: an outer pipe; an inner pipe inserted into said outer pipe, wherein one of said outer pipe and said inner pipe comprises an annular groove; and, a gasket positioned within said annular groove and adapted to provide a seal between said outer pipe and said inner pipe, said gasket comprising: an annular gasket body formed of a resilient material, said gasket body having a centerline and including a base adapted to sealingly engage said groove, a projection extending from said gasket body, said projection being so located on said gasket body that it is bisected by said centerline thereof, said projection comprising a first compression point for said gasket body, and an annular bore extending in said gasket body, said bore being spaced from said projection and being so located on said gasket body that it is bisected by said centerline thereof.
Claim 25
Dependent Claim
158 words
A pipe joint which can accommodate both internal pressures and external pressures, said pipe joint comprising: an outer pipe; an inner pipe inserted into said outer pipe, wherein one of said outer pipe and said inner pipe comprises an annular groove; and, a gasket positioned within said annular groove and adapted to provide a seal between said outer pipe and said inner pipe, said gasket comprising: an annular gasket body formed of a resilient material, said gasket body having a centerline and including a base adapted to sealingly engage said groove, a projection extending from said gasket body, said projection being so located on said gasket body that it is bisected by said centerline thereof, said projection comprising a first compression point for said gasket body, and an annular bore extending in said gasket body, said bore being spaced from said projection and being so located on said gasket body that it is bisected by said centerline thereof.
Claim 26
Dependent Claim
52 words
The pipe joint of claim 21 wherein said gasket further comprises: a first recess formed in said gasket body, said first recess being located on a first side of said centerline; and, a second recess formed in said gasket body, said second recess being located on a second side of said centerline.
Claim 27
Dependent Claim
69 words
The pipe joint of claim 22 wherein said gasket body further comprises: a third recess formed in said gasket body, said third recess being located on said first side of said centerline in a spaced manner from said first recess; and, a fourth recess formed in said gasket body, said fourth recess being located on a second side of said centerline in a spaced manner from said second recess.
References Cited (Backward Citations)
US2471759A
Cited
US3219354A
Cited
US3288475A
Cited
US3317214A
Cited
US3592481A
Cited
US3550990A
Cited
US3647229A
Cited
US3690684A
Cited
US3776682A
Cited
US3843302A
Cited
US3712631A
Cited
US4304415A
Cited
US4346922A
Cited
US4368894A
Cited
US4529211A
Cited
US4508355A
Cited
US4602793A
Cited
US4602792A
Cited
US5114162A
Cited
US5380017A
Cited
US5169161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-11-17 | 2001-05-19 | 2001-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-17 | 2005-05-19 | 2005-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-17 | 2009-05-19 | 2009-11-18 | $7700.00 | Window Closed / Lapsed |