Patent US3296191A successfully refreshed from Google Patents.
Patent US4778631A successfully refreshed from Google Patents.
US4048366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise control materials
Assignee: British Uralite Ltd
•
Filing: 1975-07-14
•
Granted: 1977-09-13
•
Expires: 1995-07-14
Abstract
Abstract A noise reducing material especially suitable for attaching to internal combustion engine casing parts and comprising (a) a layer of a metal such as lead combining a high density with a low shear modulus, bonded to (b) a layer of a pliant thermoplastics matrix reinforced with fibrous material. Layer (b) is preferably asbestos fiber-reinforced bitumen and the laminate preferably comprises a layer of lead between two layers of the reinforced thermoplastics material.
Inventors
- 👤 Herbert William Kingsbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:41
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; D; D06; D06N; D06N5/00; B32B11/00; B32B11/04; B32B11/08; B32B25/00; B32B25/04; B32B7/00; B32B7/04; B32B7/12; F; F02; F02B; F02B77/00; F02B77/11; F02B77/13; F02F; F02F7/00; F02F7/006; G; G01; G01H; G01H3/00; G10; G10K; G10K11/00; G10K11/16; G10K11/162; G10K11/168; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2305/00; B32B2305/08; B32B2307/00; B32B2307/10; B32B2307/102; B32B2307/50; B32B2307/56; B32B2307/70; B32B2307/714; B32B2311/00; B32B2311/14; B32B2605/00; B32B2605/08; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/24995; Y10T428/249951; Y10T428/31504; Y10T428/31652; Y10T428/31656; Y10T428/31678; Y10T428/31717; Y10T428/31815
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
135 words
A noise reducing combination, comprising a component which is prone to vibrate and, applied to at least a part of the surface thereof, a vibration damping material consisting essentially of a laminate of a metallic sheet which is from 0.4 mm to 2 mm thick and has a density of at least 7 gm/cc and wherein the metal is a metal having a shear modulus not exceeding 4 × 10 11 dynes per square centimeter and, adhesively bonded to each face of said sheet, a layer of reinforced thermoplastic material comprising a matrix of pliant thermoplastic material reinforced with fibrous material in the form of staple fibers forming a disperse phase in the matrix, wherein the metallic sheet is spaced from said surface of said component by one of said layers of reinforced thermoplastic material.
Claim 2
Dependent Claim
135 words
A noise reducing combination, comprising a component which is prone to vibrate and, applied to at least a part of the surface thereof, a vibration damping material consisting essentially of a laminate of a metallic sheet which is from 0.4 mm to 2 mm thick and has a density of at least 7 gm/cc and wherein the metal is a metal having a shear modulus not exceeding 4 × 10 11 dynes per square centimeter and, adhesively bonded to each face of said sheet, a layer of reinforced thermoplastic material comprising a matrix of pliant thermoplastic material reinforced with fibrous material in the form of staple fibers forming a disperse phase in the matrix, wherein the metallic sheet is spaced from said surface of said component by one of said layers of reinforced thermoplastic material.
Claim 3
Dependent Claim
20 words
A combination in accordance with claim 1, wherein said component is an engine casing component of an internal combustion engine.
Claim 4
Dependent Claim
24 words
A combination in accordance with claim 1, in which the exposed surface of the laminate is provided with a protective layer of polysulfide rubber.
Claim 5
Dependent Claim
17 words
A combination in accordance with as claimed in claim 1 in which the thermoplastic material is bitumen.
Claim 6
Dependent Claim
20 words
A combination in accordance with as claimed in claim 1 in which the fibrous reinforcement is provided by mineral fibers.
Claim 7
Dependent Claim
14 words
A combination in accordance with claim 5 in which the fibers are asbestos fibers.
Claim 8
Dependent Claim
55 words
A combination in accordance with claim 1 in which the staple fibers are present in the form of a plurality of discrete laminae within the layer of reinforced thermoplastic material, the laminae extending parallel to the plane of the layer and the fibres of each lamina being randomly oriented in the plane of the layer.
Claim 9
Dependent Claim
17 words
A combination in accordance with claim 1 in which the metallic sheet is a sheet of lead.
Claim 10
Dependent Claim
100 words
A combination in accordance with claim 1 wherein said laminate comprises a sheet of lead between the bonded to each of two layers of reinforced thermoplastic material each of which comprises bitumen reinforced with staple asbestos fibers which are in the form of a plurality of discrete laminae within the layer, the laminae extending parallel to the plane of the layer and the fibers of each lamina being randomly oriented in the plane of the layer; the lead sheet being from 0.8 to 1.8 mm thick and each layer of reinforced thermoplastic being from 2 mm to 6 mm thick.
Claim 11
Dependent Claim
20 words
A combination in accordance with claim 9, wherein said component is an engine casing component of an internal combustion engine.
References Cited (Backward Citations)
CA468843A
Cited
US2057071A
Cited
GB499240A
Cited
US2240326A
Cited
US2440626A
Cited
US2472100A
Cited
GB613650A
Cited
US2668781A
Cited
US2678891A
Cited
US2850789A
Cited
US2910922A
Cited
GB961665A
Cited
GB1022167A
Cited
GB985113A
Cited
US3573124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |