US4655496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor vehicle noise insulation
Assignee: Dr Alois Stankiewicz GmbH
•
Filing: 1985-11-04
•
Granted: 1987-04-07
•
Expires: 2005-11-04
Abstract
Abstract A partition (4) for separating the engine compartment (2) from the passenger compartment (3) of a motor vehicle comprises a wall (5) and a covering (6) of noise-insulating material on the engine compartment side of the wall. The partition (4) has convex or concave deformations (8, 9, 11) in one or several areas of the high noise occurrence.
Inventors
- 👤 Heinemann Gahlau
- 👤 Klaus Wittenmayer
- 👤 Manfred Laubner
- 👤 Herbert Baumeister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:16
CPC Classifications
B; B60; B60R; B60R13/00; B60R13/08; B60R13/0815; B60R13/083; B62; B62D; B62D25/00; B62D25/08
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
100 words
A partition for separating an engine compartment subject to low-frequency and high-frequency noise and a passenger compartment of a motor vehicle, which partition comprises (i) a sheet metal wall located between the compartments so as to have one side adjacent the engine compartment and (ii) a covering of noise-insulating material on the side of the wall adjacent the engine compartment, the partition including at areas of high noise levels a convex deformation at an area of low-frequency noise and a concave deformation at an area of high-frequency noise, said wall and said covering being in spaced-apart relationship at said deformations.
Claim 2
Dependent Claim
100 words
A partition for separating an engine compartment subject to low-frequency and high-frequency noise and a passenger compartment of a motor vehicle, which partition comprises (i) a sheet metal wall located between the compartments so as to have one side adjacent the engine compartment and (ii) a covering of noise-insulating material on the side of the wall adjacent the engine compartment, the partition including at areas of high noise levels a convex deformation at an area of low-frequency noise and a concave deformation at an area of high-frequency noise, said wall and said covering being in spaced-apart relationship at said deformations.
Claim 3
Dependent Claim
19 words
A partition as claimed in claim 1 wherein at least one of said deformations is provided in the wall.
Claim 4
Dependent Claim
22 words
A partition as claimed in claim 1 wherein at least one of said deformations is provided in the covering of noise-insulating material.
Claim 5
Dependent Claim
20 words
A partition as claimed in claim 1 wherein the covering is in the form of a self-supporting, heat-resistant, thermoplastics material.
Claim 6
Dependent Claim
17 words
A partition as claimed in claim 4 wherein the thermoplastics material is a highly filled elastomer-modified polyamide.
Claim 7
Dependent Claim
14 words
A partition as claimed in claim 4 wherein the thermoplastics material is a polypropylene.
Claim 8
Dependent Claim
15 words
A partition as claimed in claim 4 wherein the thermoplastics material is a multi-component system.
Claim 9
Dependent Claim
15 words
A partition as claimed in claim 7 wherein the multi-component system is a polyurethane system.
Claim 10
Dependent Claim
20 words
A partition as claimed in claim 8 wherein the covering is formed of a polyurethane processed by the RIM process.
Claim 11
Dependent Claim
21 words
A partition as claimed in claim 1 wherein the covering of noise-insulation material is at least partially spaced from the wall.
Claim 12
Dependent Claim
19 words
A partition as claimed in claim 1 wherein, along the partition, oppositely-lying deformations are provided opposite to each other.
Claim 13
Dependent Claim
22 words
A partition as claimed in claim 1 wherein, transversely of the partition, convex and concave deformations are disposed adjacently to each other.
Claim 14
Dependent Claim
33 words
A partition as claimed in claim 1 wherein one or more cavities formed between the wall and the covering are filled with loosely structured material at least in the area of the deformations.
Claim 15
Dependent Claim
15 words
A partition as claimed in claim 1 wherein the covering is adhered to the wall.
Claim 16
Dependent Claim
17 words
A partition as claimed in claim 14, wherein the adhesive used is a solid-borne noise damping adhesive.
Claim 17
Dependent Claim
25 words
A partition as claimed in claim 1 wherein the covering has a lip at its upper edge which is folded over a water drainage tray.
Claim 18
Dependent Claim
39 words
A partition as claimed in claim 1 wherein the vehicle has an engine hood, the covering has an edge facing the engine hood, and a sealing lip is provided at least on said edge for abutting against the hood.
Claim 19
Dependent Claim
16 words
A partition as claimed in claim 1 wherein contact elements are integrally formed in the covering.
Claim 20
Dependent Claim
32 words
A partition as claimed in claim 1 wherein the covering is produced by an injection moulding process and further comprising integrated contact elements embedded in the covering during the injection moulding process.
Claim 21
Dependent Claim
18 words
A partition as claimed in claim 1 wherein the covering is provided with apertures for receiving securing means.
References Cited (Backward Citations)
US2166848A
Cited
DE2403254A1
Cited
US4288490A
Cited
US4228869A
Cited
JPS5332512A
Cited
US4391465A
Cited
US4456092A
Cited
FR2504712A1
Cited
US4479992A
Cited
US4463049A
Cited
US4584232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |