US3916049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound deadening and materials therefor
Assignee: British Uralite Ltd
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Filing: 1974-08-27
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Granted: 1975-10-28
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Expires: 1994-08-27
Abstract
Abstract A hollow component, and specifically a sump, timing gear cover or valve gear cover, of an internal combustion engine, said component having applied thereto over at least part of the surface thereof a sound deadening layer comprising one or more self-supporting sheets of asbestos fibre-filled bitumen composition, the total thickness of the sound deadening layer being at least 1.5 mm and wherein in each sheet the weight ratio of asbestos fibres to bitumen is in the range of from 40:60 to 60:40, and in each sheet the asbestos fibres are in the form of a plurality of discrete laminae lying parallel to the plane of the sheet.
Inventors
- 👤 Herbert William Kingsbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:42
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; G10K11/162; G10K11/165; C; C04; C04B; C04B26/00; C04B26/02; C04B26/26; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B2001/8457; E04B2001/8461; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/24; Y10T428/24132; Y10T428/24942; Y10T428/31504; Y10T428/31652; Y10T428/31815
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
102 words
A HOLLOW COMPONENT OF AN INTERNAL COMBUSTION ENGINE, WHICH COMPONENT IS PRONE TO VIBRATE, SAID COMPONENT HAVING APPLIED THERETO OVER AT LEAST PART OF THE SURFACE THEREOF A SOUND DEADENING LAYER COMPRISING ONE OR MORE SELF-SUPPORTING SHEET OF ASBESTO S FIBRE-FILLED BITUMEN COMPOSITION, THE TOTAL THICKNES OF THE SOUND DEADENING LAYER BEING LEAST 1.5 MM AND WHEREIN IN EACH SHEET THE WEIGHT RATIO OF ASBESTOS FIBRES TO BITUMEN IS IN THE RANGE OF FROM 10:60 TO 60:40, AND IN EACH SHEET THE ASBESTOS FIBRES ARE IN TE FORM OF A PLURALITY OF DISCRETE LAMINAE LYING PARALLEL TO THE PLANE OF THE SHEET.
Claim 2
Dependent Claim
102 words
A HOLLOW COMPONENT OF AN INTERNAL COMBUSTION ENGINE, WHICH COMPONENT IS PRONE TO VIBRATE, SAID COMPONENT HAVING APPLIED THERETO OVER AT LEAST PART OF THE SURFACE THEREOF A SOUND DEADENING LAYER COMPRISING ONE OR MORE SELF-SUPPORTING SHEET OF ASBESTO S FIBRE-FILLED BITUMEN COMPOSITION, THE TOTAL THICKNES OF THE SOUND DEADENING LAYER BEING LEAST 1.5 MM AND WHEREIN IN EACH SHEET THE WEIGHT RATIO OF ASBESTOS FIBRES TO BITUMEN IS IN THE RANGE OF FROM 10:60 TO 60:40, AND IN EACH SHEET THE ASBESTOS FIBRES ARE IN TE FORM OF A PLURALITY OF DISCRETE LAMINAE LYING PARALLEL TO THE PLANE OF THE SHEET.
Claim 3
Dependent Claim
24 words
A hollow component as claimed in claim 1 in which the exposed surface of the sound deadening layer is protected with an oil-resistant coating.
Claim 4
Dependent Claim
28 words
A hollow component as claimed in claim 1 in which the sound deadening layer is spaced from the surface thereof by at least one layer of other material.
Claim 5
Dependent Claim
18 words
A hollow component as claimed in claim 3 in which the other material is a noise suppressing material.
Claim 6
Dependent Claim
16 words
A hollow component as claimed in claim 4 in which the noise suppressing material is felt.
Claim 7
Dependent Claim
18 words
A hollow component as claimed in claim 5 in which the felt is 6 to 100 mm thick.
Claim 8
Dependent Claim
18 words
A hollow component as claimed in claim 6 in which the felt is 6 to 12.5 mm thick.
Claim 9
Dependent Claim
24 words
A hollow component as claimed in claim 1 in which at least one layer of other material is superposed on the sound deadening layer.
Claim 10
Dependent Claim
18 words
A hollow component as claimed in claim 8 in which the other material is a noise suppressing material.
Claim 11
Dependent Claim
16 words
A hollow component as claimed in claim 9 in which the noise suppressing material is felt.
Claim 12
Dependent Claim
18 words
A hollow component as claimed in claim 10 in which the felt is 6 to 100 mm thick.
Claim 13
Dependent Claim
18 words
A hollow component as claimed in claim 11 in which the felt is 6 to 12.5 mm thick.
Claim 14
Dependent Claim
31 words
A hollow component as claimed in claim 1 which is a sump for an internal combustion engine and in which the sound deadening layer is bonded to the external surface thereof.
Claim 15
Dependent Claim
33 words
A hollow component as claimed in claim 1 which is a valve gear cover for an internal combustion engine and in which the sound deadening layer is applied to the external surface thereof.
Claim 16
Dependent Claim
33 words
A hollow component as claimed in claim 1 which is a timing gear cover for an internal combustion engine and in which the sound deadening layer is bonded to the external surface thereof.
Claim 17
Dependent Claim
28 words
A hollow component as claimed in claim 1 in which the sound deadening layer Is bonded to the component surface over part or all of the contact area.
Claim 18
Dependent Claim
23 words
A hollow component as claimed in claim 1 in which there is no bonding between the sound deadening layer and the component surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |