Patent US4092200A successfully refreshed from Google Patents.
US4092200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing an automotive ceiling panel
Assignee: Toyota Motor Corp
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Filing: 1976-09-28
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Granted: 1978-05-30
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Expires: 1996-09-28
Abstract
Abstract An automotive ceiling panel and a process for manufacturing same, in which one surface of a first polyethylene foam layer is embossed to form a crimp pattern thereon, a metal lath is sandwiched between the first polyethylene layer and a second polyethylene layer, then the three layers thus placed are introduced between rollers for fusion-bonding and rolling, and a laminate thus prepared is cold-pressed into a desired shape for a ceiling. This automotive ceiling panel consists of three layers, rather than four layers as in the prior art ceiling panels, thus saving its weight and man hours required for manufacture to a great extent, yet providing high quality.
Inventors
- 👤 Takao Nomura
- 👤 Yoshiro Umemoto
- 👤 Tatsuo Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:49
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/046; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/5627; B29C44/5636; B29C51/00; B29C51/14; B29C59/00; B29C59/02; B29C59/04; B32B15/02; B32B37/00; B32B37/14; B32B37/16; B32B37/22; B32B37/223; B32B37/226; B32B38/00; B32B38/06; B32B5/00; B32B5/22; B32B5/32; B29K; B29K2105/00; B29K2105/04; B29L; B29L2009/00; B29L2009/003; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/025; B32B2305/00; B32B2305/02; B32B2305/022; B32B2305/38; B32B2307/00; B32B2307/10; B32B2307/102; B32B2307/30; B32B2307/304; B32B2605/00; B32B2605/003; B32B37/04; B32B38/12; B60; B60R; B60R13/00; B60R13/02; B60R13/0212; B60R13/0225; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24446; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249987; Y10T428/24999
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
224 words
A process for manufacturing an automotive ceiling panel comprising the steps of passing a first layer of polyethylene foam having a pair of opposed surfaces through a crimp-pattern forming machine to form a crimp-pattern on one of said surfaces, providing a second layer of polyethylene foam, providing a metal lathe, providing a pair of rollers mounted for rotation in opposite directions on generally parallel axes, forming a fusion-bonded laminate of said first polyethylene foam layer, said second polyethylene foam layer, with said metal lathe sandwiched therebetween by heating said first and second polyethylene foam layers and subsequently passing said first and second polyethylene foam layers with said metal lathe therebetween between said pair of rollers, with the surface of said first polyethylene foam layer opposite said one surface thereof being placed in engagement with said metal lathe while passing through said pair of rollers, said laminate thus formed constituting said auto ceiling panel with said one surface of said first polyethylene foam layer having said crimp pattern thereon facing outwardly of said ceiling panel to form a decorative surface thereof, and placing said laminate between a pair of opposed die members and cold pressing said laminate into a desired shape for said ceiling panel between said opposed die members while firmly gripping and holding the periphery of said laminate during said cold pressing operation.
Claim 2
Dependent Claim
224 words
A process for manufacturing an automotive ceiling panel comprising the steps of passing a first layer of polyethylene foam having a pair of opposed surfaces through a crimp-pattern forming machine to form a crimp-pattern on one of said surfaces, providing a second layer of polyethylene foam, providing a metal lathe, providing a pair of rollers mounted for rotation in opposite directions on generally parallel axes, forming a fusion-bonded laminate of said first polyethylene foam layer, said second polyethylene foam layer, with said metal lathe sandwiched therebetween by heating said first and second polyethylene foam layers and subsequently passing said first and second polyethylene foam layers with said metal lathe therebetween between said pair of rollers, with the surface of said first polyethylene foam layer opposite said one surface thereof being placed in engagement with said metal lathe while passing through said pair of rollers, said laminate thus formed constituting said auto ceiling panel with said one surface of said first polyethylene foam layer having said crimp pattern thereon facing outwardly of said ceiling panel to form a decorative surface thereof, and placing said laminate between a pair of opposed die members and cold pressing said laminate into a desired shape for said ceiling panel between said opposed die members while firmly gripping and holding the periphery of said laminate during said cold pressing operation.
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) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |