Patent US3837683A successfully refreshed from Google Patents.
US3837683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe joint sleeve
Assignee: CROIX FOUNDRY Ltd SOC
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Filing: 1973-08-02
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Granted: 1974-09-24
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Expires: 1993-08-02
Abstract
Abstract The present invention relates to a sleeve for a packing disposed about the joint existing between adjacent ends of a pair of substantially axially pipes. The inner periphery of the sleeve is provided with a plurality of non-communicating compartments which serve to inhibit leakage from such a joint.
Inventors
- 👤 T Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:13
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/002; F16L21/005
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
88 words
A sleeve for use in a device for sealing adjacent and substantially axially aligned ends of a pair of pipes, said sleeve being formed of resilient material and having a substantially central, primary, inwardly projecting annular sealing rib, a plurality of secondary circumferential sealing ribs, and a plurality of annularly spaced, axially extending, sealing cross-ribs connecting the secondary ribs in each adjacent pair thereof with one another, said secondary ribs and said cross-ribs defining a plurality of non-communicating annular compartments disposed around the inner periphery of said sleeve.
Claim 2
Dependent Claim
88 words
A sleeve for use in a device for sealing adjacent and substantially axially aligned ends of a pair of pipes, said sleeve being formed of resilient material and having a substantially central, primary, inwardly projecting annular sealing rib, a plurality of secondary circumferential sealing ribs, and a plurality of annularly spaced, axially extending, sealing cross-ribs connecting the secondary ribs in each adjacent pair thereof with one another, said secondary ribs and said cross-ribs defining a plurality of non-communicating annular compartments disposed around the inner periphery of said sleeve.
Claim 3
Dependent Claim
32 words
A sleeve according to claim 1 wherein the cross-ribs connecting one pair of adjacent secondary ribs are circumferentially staggered with respect to the cross-ribs connecting the next adjacent pair of secondary ribs.
Claim 4
Dependent Claim
55 words
A sleeve according to claim 2 wherein the primary rib is adapted to be interposed between the terminal faces of the ends of the pipes, and the secondary ribs and the cross-ribs are maintained in sealing contact with the outer periphery of each said end by means of a clamping band disposed about said sleeve.
Claim 5
Dependent Claim
10 words
A sleeve according to claim 3 moulded from synthetic rubber.
Claim 6
Dependent Claim
9 words
A sleeve according to claim 3 moulded from neoprene.
Claim 7
Dependent Claim
77 words
A pipe joint comprising a clamping band adapted to surround abutting ends of pipe sections to be joined; a resilient, annular packing member within said clamping band for sealing the joint when said clamping band is tightened, the inner periphery of the packing member having a plurality of non-communicating compartments disposed around the inner periphery of the packing member; and means for tightening said clamping band about said packing member and into sealing contact with said ends.
Claim 8
Dependent Claim
77 words
A pipe joint comprising a clamping band adapted to surround abutting ends of pipe sections to be joined; a resilient, annular packing member within said clamping band for sealing the joint when said clamping band is tightened, the inner periphery of the packing member having a plurality of non-communicating compartments disposed around the inner periphery of the packing member; and means for tightening said clamping band about said packing member and into sealing contact with said ends.
Claim 9
Dependent Claim
64 words
A joint according to claim 5 wherein the inner periphery of the packing member has a substantially central, primary, inwardly projecting sealing rib, a plurality of secondary circumferential sealing ribs, and a plurality of annularly spaced, axially extending, sealing cross-ribs connecting the secondary ribs in each adjacent pair thereof with one another, said secondary ribs and said cross-ribs defining said annularly disposed non-communicating compartments.
Claim 10
Dependent Claim
32 words
A joint according to claim 7 wherein the cross-ribs connecting one pair of adjacent secondary ribs are circumferentially staggered with respect to the cross-ribs connecting the next adjacent pair of secondary ribs.
Claim 11
Dependent Claim
51 words
A joint according to claim 7 wherein the primary rib is adapted to be interposed between the terminal faces of the ends of the pipes, and the secondary ribs and the cross-ribs are maintained in sealing contact with the outer periphery of each said end by means of said clamping band.
Claim 12
Dependent Claim
15 words
A joint according to claim 9 wherein the packing member is moulded from synthetic rubber.
Claim 13
Dependent Claim
14 words
A joint according to claim 9 wherein the packing member is moulded from neoprene.
References Cited (Backward Citations)
US3142502A
Cited
US3233922A
Cited
US3334928A
Cited
US3453006A
Cited
US3572773A
Cited
US3359017A
Cited
US3479066A
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US3527484A
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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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |