US4101150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion joints
Assignee: Uniroyal Ltd Great Britain
•
Filing: 1976-09-09
•
Granted: 1978-07-18
•
Expires: 1996-09-09
Abstract
Abstract An expansion joint or dredging sleeve having a body built up from a rubber and fabric ply construction at least one section of the body being reinforced by a reinforcing structure comprising a ring of rubber having a Shore A hardness of not less than 70° sandwiched between two rings of fabric comprising cords which have a compression deflection characteristic measured as described herein not exceeding 1% under a load of 40 kg. said cords extending substantially circumferentially of the rings.
Inventors
- 👤 Clive Stafford Thawley
- 👤 Thomas Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:51
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/28; E; E02; E02F; E02F7/00; E02F7/10; F16L11/00; F16L11/04; F16L11/11; F16L11/112; F16L23/00; F16L23/006; F16L51/00; F16L51/02; F16L51/022
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
137 words
An expansion joint or dredging sleeve comprising two annular end sections joined by an intermediate outwardly arched section, each end section terminating in a flange, the sleeve having a body built up from rubber and fabric ply construction throughout its length, a reinforcement in each end section comprising a ring of rubber having a Shore A hardness of not less than 70° sandwhiched between two rings of a fabric comprising cords which have a compression deflection characteristic not exceeding 1% under a load of 40 kg, said cords extending substantially circumferentially of the rings and the reinforcement extends into each flange, a reinforcement in the intermediate section including a ring of rubber of a hardness not more than 60° Shore A, said ring being of substantially the same thickness as the ring in the end section reinforcement.
Claim 2
Dependent Claim
137 words
An expansion joint or dredging sleeve comprising two annular end sections joined by an intermediate outwardly arched section, each end section terminating in a flange, the sleeve having a body built up from rubber and fabric ply construction throughout its length, a reinforcement in each end section comprising a ring of rubber having a Shore A hardness of not less than 70° sandwhiched between two rings of a fabric comprising cords which have a compression deflection characteristic not exceeding 1% under a load of 40 kg, said cords extending substantially circumferentially of the rings and the reinforcement extends into each flange, a reinforcement in the intermediate section including a ring of rubber of a hardness not more than 60° Shore A, said ring being of substantially the same thickness as the ring in the end section reinforcement.
Claim 3
Dependent Claim
32 words
An expansion joint or dredging sleeve according to claim 1 in which the ring of rubber in each end section is a polyacrylonitrile compound having a hardness of about 90° Shore A.
Claim 4
Dependent Claim
26 words
An expansion joint or dredging sleeve according to claim 1 in which the cord is a textile cord selected from polyamides, polyaramides, polyolefins, modacrylics and polybenzimidazole.
Claim 5
Dependent Claim
20 words
An expansion joint or dredging sleeve according to claim 3 in which the cord is a yarn comprising polyester monofilaments.
Claim 6
Dependent Claim
33 words
An expansion joint or dredging sleeve according to claim 4 in which the cord has a compression deflection characteristic in the range of from 0.4 to 1% under a load of 40 kg.
Claim 7
Dependent Claim
40 words
An expansion joint according to claim 1 comprising a plurality of intermediate arched sections, each pair of intermediate arched sections being joined by an annular intermediate section, the annular end sections and annular intermediate sections being reinforced by the reinforcement.
Claim 8
Dependent Claim
18 words
An expansion joint according to claim 6 in which the end structure reinforcement terminates at the arched sections.
Claim 9
Dependent Claim
31 words
An expansion joint according to claim 6 in which each of the radially outer rings of reinforcing fabric in the end sections and the intermediate sections terminates at the arched sections.
Claim 10
Dependent Claim
26 words
An expansion joint according to claim 6 in which each ring of rubber in the end sections and the intermediate sections terminates at the arched sections.
Claim 11
Dependent Claim
17 words
An expansion joint according to claim 1 wherein the end section reinforcement terminates at the arched section.
Claim 12
Dependent Claim
24 words
An expansion joint according to claim 1 wherein the radially outer ring of reinforcing fabric in the end sections terminates at the arched section.
Claim 13
Dependent Claim
21 words
An expansion joint according to claim 1 wherein the ring of rubber in the end sections terminates at the arched section.
Claim 14
Dependent Claim
20 words
An expansion joint according to claim 1 wherein the ring of rubber in the end section is a single ring.
Claim 15
Dependent Claim
20 words
An expansion joint according to claim 1 wherein the ring of rubber in the intermediate section is a single ring.
Claim 16
Dependent Claim
30 words
An expansion joint according to claim 6 wherein the rings of rubber in the end sections, the intermediate arched sections and the intermediate annular section, respectively, is a single ring.
References Cited (Backward Citations)
US1696435A
Cited
US3051512A
Cited
US2953618A
Cited
US3139115A
Cited
US3305251A
Cited
US3363918A
Cited
GB1192496A
Cited
US3429592A
Cited
US3580616A
Cited
US3612176A
Cited
FR2232239A7
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |