US4128683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auto ceiling panel and its manufacturing process
Assignee: Toyota Motor Corp
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Filing: 1978-04-11
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Granted: 1978-12-05
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Expires: 1998-04-11
Abstract
Abstract Highly acoustical auto ceiling panel characterized in that polyethylene foams are laminated with a metal lath sandwiched between them; the surface of the interior side polyethylene foam is coated with a vinyl chloride sheet and this foam with said sheet is provided with numerous small holes through two layer, while the other polyethylene foam across said metal lath is provided with numerous through holes of a diameter larger than that of the hole in the former foam; and the manufacturing process of this auto ceiling panel.
Inventors
- 👤 Takao Nomura
- 👤 Yoshiro Umemoto
- 👤 Tatsuo Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:44
CPC Classifications
B; B60; B60R; B60R13/00; B60R13/02; B60R13/0212; B60R13/0225; G; G10; G10K; G10K11/00; G10K11/16; G10K11/162; G10K11/168; B60R13/08; B60R13/0815; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24479; Y10T428/24496; Y10T428/24942; Y10T428/2495; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
80 words
Auto ceiling panel comprising: an interior side polyethylene foam; a vinyl chloride sheet bonded to the internal surface of said interior side polyethylene foam; a large number of fine holes running through both said interior side polyethylene foam and said vinyl chloride sheet; a ceiling side polyethylene foam thermally fused through a metal lath to the ceiling side surface of said interior side polyethylene foam; and a large number of less fine holes bored on said ceiling side polyethylene foam.
Claim 2
Dependent Claim
80 words
Auto ceiling panel comprising: an interior side polyethylene foam; a vinyl chloride sheet bonded to the internal surface of said interior side polyethylene foam; a large number of fine holes running through both said interior side polyethylene foam and said vinyl chloride sheet; a ceiling side polyethylene foam thermally fused through a metal lath to the ceiling side surface of said interior side polyethylene foam; and a large number of less fine holes bored on said ceiling side polyethylene foam.
Claim 3
Dependent Claim
24 words
Auto ceiling panel of claim 1, wherein said interior side polyethylene foam and said ceiling side polyethylene foam are respectively 1.0 - 8.0mm thickness.
Claim 4
Dependent Claim
16 words
Auto ceiling panel of claim 1, wherein said metal lath is 0.5 - 1.5mm in thickness.
Claim 5
Dependent Claim
26 words
Auto ceiling panel of claim 1, wherein said interior side polyethylene foam and said ceiling side polyethylene foam are respectively 0.02 - 0.1 in specific gravity.
Claim 6
Dependent Claim
17 words
Auto ceiling panel of claim 1, wherein said vinyl chloride sheet is 0.01 - 0.5mm in thickness.
Claim 7
Dependent Claim
16 words
Auto ceiling panel of claim 1, wherein said fine holes are 0.1 - 3.0mm in diameter.
Claim 8
Dependent Claim
25 words
Auto ceiling panel of claim 1, wherein the open rates in said interior side polyethylene foam and said vinyl chloride sheet are 1 - 20%.
Claim 9
Dependent Claim
21 words
Auto ceiling panel of claim 1, wherein the holes in said ceiling side polyethylene foam are 1.0 - 8.0mm in diameter.
Claim 10
Dependent Claim
20 words
Auto ceiling panel of claim 1, wherein the open rate in said ceiling side polyethylene foam is 1 - 50%.
Claim 11
Dependent Claim
15 words
Auto ceiling panel of claim 1, wherein said vinyl chloride sheet bears an embossed pattern.
Claim 12
Dependent Claim
126 words
Auto ceiling panel manufacturing process comprising: a step of bonding a vinyl chloride sheet to the surface of an interior side polyethylene foam; a step of boring numerous fine holes on said interior side polyethylene foam and said vinyl chloride sheet such that said holes run through both said foam and said sheet; a step of boring numerous less fine through holes on a ceiling side polyethylene foam; a step of sandwiching a metal lath between said interior side polyethylene foam and said ceiling side polyethylene foam; a step of thermally fusing said metal lath to said interior side polyethylene foam and said ceiling side polyethylene foam, yielding a sandwiched laminated board; and a step of cold press-molding said sandwiched laminated board to a desired profile.
Claim 13
Dependent Claim
126 words
Auto ceiling panel manufacturing process comprising: a step of bonding a vinyl chloride sheet to the surface of an interior side polyethylene foam; a step of boring numerous fine holes on said interior side polyethylene foam and said vinyl chloride sheet such that said holes run through both said foam and said sheet; a step of boring numerous less fine through holes on a ceiling side polyethylene foam; a step of sandwiching a metal lath between said interior side polyethylene foam and said ceiling side polyethylene foam; a step of thermally fusing said metal lath to said interior side polyethylene foam and said ceiling side polyethylene foam, yielding a sandwiched laminated board; and a step of cold press-molding said sandwiched laminated board to a desired profile.
Claim 14
Dependent Claim
27 words
Auto ceiling panel manufacturing process of claim 11, wherein said interior side polyethylene foam and said ceiling side polyethylene foam are respectively 1.0 - 8.0mm in thickness.
Claim 15
Dependent Claim
18 words
Auto ceiling panel manufacturing process of claim 11, wherein said metal lath is 0.5 - 1.5mm in thickness.
Claim 16
Dependent Claim
28 words
Auto ceiling panel manufacturing process of claim 11, wherein said interior side polyethylene foam and said ceiling side polyethylene foam are respectively 0.02 - 0.1 in specific gravity.
Claim 17
Dependent Claim
19 words
Auto ceiling panel manufacturing process of claim 11, wherein said vinyl chloride sheet is 0.01 - 0.5mm in thickness.
Claim 18
Dependent Claim
18 words
Auto ceiling panel manufacturing process of claim 11, wherein said fine holes are 0.1 - 3.0mm in diameter.
Claim 19
Dependent Claim
27 words
Auto ceiling panel manufacturing process of claim 11, wherein the open rates in said interior side polyethylene foam and said vinyl chloride sheet are 1 - 20%.
Claim 20
Dependent Claim
23 words
Auto ceiling panel manufacturing process of claim 11, wherein the holes in said ceiling side polyethylene foam are 1.0 - 8.0mm in diameter.
Claim 21
Dependent Claim
22 words
Auto ceiling panel manufacturing process of claim 11, wherein the open rate in said ceilong side polyethylene foam is 1 - 50%.
Claim 22
Dependent Claim
30 words
Auto ceiling panel manufacturing process of claim 11, wherein an embossed pattern is given to said vinyl chloride sheet before said sheet is attached to said interior side polyethylene foam.
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) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |