Patent US3671281A successfully refreshed from Google Patents.
Patent US2202401A successfully refreshed from Google Patents.
Patent US4746385A successfully refreshed from Google Patents.
US4746385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for covering an interior part with a layer of leather
Assignee: Dr Ing HCF Porsche AG
•
Filing: 1987-02-20
•
Granted: 1988-05-24
•
Expires: 2007-02-20
Abstract
Abstract A process is provided for covering an interior part with a layer of leather. The process includes subjecting a layer of leather to a heat treatment. A water-soluble protective film is then applied to the decorative upper side of the leather. The area of the interior part that is to be covered is cleaned using a solvent. An adhesive agent is applied to the cleaned area of the interior part using a brush. An adhesive agent is sprayed onto the backside of the leather layer. The two adhesive agents on the interior part and on the leather layer are ventilated. The leather layer is then applied to the interior part, and the water-soluble protective film on the decorative upper side of the leather is removed. The adhesive agent is then hardened.
Inventors
- 👤 Dieter Wagner
- 👤 Axel Braeuer
- 👤 Eugen Schray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:21
CPC Classifications
B; B32; B32B; B32B9/00; B32B9/02; B32B9/025; B32B27/00; B32B27/30; B32B27/304; B32B7/00; B32B7/04; B32B7/12; B32B9/04; B32B9/045; B60; B60R; B60R13/00; B60R13/02; C; C09; C09J; C09J5/00; B32B2255/00; B32B2255/26; B32B2605/00; B32B2605/003
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
116 words
Process for covering an interior part comprising: subjecting a leather layer to a heat treatment, applying a water-soluble protective film to a decorative upper side of the leather, cleaning by means of a solvent an area of the interior part that is to be covered, applying an adhesive agent to the cleaned area of the interior part and to a backside of the leather layer, ventilating the adhesive agents on the interior part and on the leather layer, applying the backside of the leather layer to the interior part in the area having said adhesive agent applied thereto, removing the water-soluble protective film from the decorative upper side of the leather, and hardening the adhesive agent.
Claim 2
Dependent Claim
116 words
Process for covering an interior part comprising: subjecting a leather layer to a heat treatment, applying a water-soluble protective film to a decorative upper side of the leather, cleaning by means of a solvent an area of the interior part that is to be covered, applying an adhesive agent to the cleaned area of the interior part and to a backside of the leather layer, ventilating the adhesive agents on the interior part and on the leather layer, applying the backside of the leather layer to the interior part in the area having said adhesive agent applied thereto, removing the water-soluble protective film from the decorative upper side of the leather, and hardening the adhesive agent.
Claim 3
Dependent Claim
29 words
Process as in claim 1, wherein said applying of a water-soluble protective film to the upper side of the leather includes spraying the water-soluble protective film on the leather.
Claim 4
Dependent Claim
19 words
Process as in claim 2, wherein said applying of a water-soluble protective film includes the use of polyvinyl alcohol.
Claim 5
Dependent Claim
93 words
Process for covering an interior part other than leather comprising: subjecting a leather layer to a heat treatment, cleaning by means of a solvent an area of the interior part that is to be covered, applying an adhesive agent to the cleaned area of the interior part and to a backside of the leather layer, ventilating the adhesive agents on the interior part and on the leather layer, applying the backside of the leather layer to the interior part in the area having said adhesive agent applied thereto, and hardening the adhesive agent.
Claim 6
Dependent Claim
93 words
Process for covering an interior part other than leather comprising: subjecting a leather layer to a heat treatment, cleaning by means of a solvent an area of the interior part that is to be covered, applying an adhesive agent to the cleaned area of the interior part and to a backside of the leather layer, ventilating the adhesive agents on the interior part and on the leather layer, applying the backside of the leather layer to the interior part in the area having said adhesive agent applied thereto, and hardening the adhesive agent.
Claim 7
Dependent Claim
70 words
Process as in claim 4, wherein said applying of an adhesive agent to the interior part and applying of an adhesive agent onto the leather layer include the use of adhesive agents that are chemically similar, including a polyurethane base with about 10% hardener, said applying of the adhesive agent to the interior part including an adhesive having much less solvent that the adhesive agent applied onto the leather layer.
Claim 8
Dependent Claim
56 words
Process as in claim 4, wherein said applying of an adhesive agent to the interior part includes the use of an adhesive agent having a viscosity of about 4,800 mPas, and wherein said applying of an adhesive agent to the leather layer includes the use of an adhesive agent having a viscosity of about 690 mPas.
Claim 9
Dependent Claim
47 words
Process as in claim 4, further including: applying a water-soluble protective film to a decorative upper side of the leather after subjecting the leather layer to heat treatment, and removing the water-soluble protective film from the decorative upper side of the leather before hardening the adhesive agent.
Claim 10
Dependent Claim
24 words
Process as in claim 7, wherein said hardening of the adhesive agent is performed at room temperature 20° C. for up to forty-eight hours.
Claim 11
Dependent Claim
34 words
Process as in claim 8, wherein said subjecting of the leather layer to a heat treatment is performed at a temperature of 100°-110° C. in a drying stove for about four to six hours.
Claim 12
Dependent Claim
74 words
Process as in claim 8, wherein said applying of an adhesive agent to the interior part and applying of an adhesive agent onto the leather layer include the use of adhesive agents that are chemically similar, including a polyurethane base with about 10% hardener, said applying of the adhesive agent to the interior part including the use of an adhesive having much less solvent than the adhesive agent being applied onto the leather layer.
Claim 13
Dependent Claim
56 words
Process as in claim 8, wherein said applying of an adhesive agent to the interior part includes the use of an adhesive agent having a viscosity of about 4,800 mPas, and wherein said applying of an adhesive agent to the leather layer includes the use of an adhesive agent having a viscosity of about 690 mPas.
Claim 14
Dependent Claim
34 words
Process as in claim 7, wherein said subjecting of the leather layer to a heat treatment is performed at a temperature of 100°-110° C. in a drying stove for about four to six hours.
Claim 15
Dependent Claim
19 words
Process as in claim 7, wherein said applying of a water-soluble protective film includes the use of polyvinyl alcohol.
Claim 16
Dependent Claim
29 words
Process as in claim 13, wherein said applying of a water-soluble protective film to the upper side of the leather includes spraying the water-soluble protective film on the leather.
Claim 17
Dependent Claim
71 words
Process as in claim 7, wherein said applying of an adhesive agent to the interior part and applying of an adhesive agent onto the leather layer include the use of adhesive agents that are chemically similar, including a polyurethane base with about 10% hardener, said applying of the adhesive agent to the interior part including an adhesive having much less solvent than the adhesive agent being applied onto the leather layer.
Claim 18
Dependent Claim
56 words
Process as in claim 7, wherein said applying of an adhesive agent to the interior part includes the use of an adhesive agent having a viscosity of about 4,800 mPas, and wherein said applying of an adhesive agent to the leather layer includes the use of an adhesive agent having a viscosity of about 690 mPas.
Claim 19
Dependent Claim
29 words
Process as in claim 7, wherein said applying of a water-soluble protective film to the upper side of the leather includes spraying the water-soluble protective film on the leather.
Claim 20
Dependent Claim
154 words
Process for covering an interior part comprising: subjecting a leather layer to a heat treatment, cleaning by means of a solvent an area of the interior part that is to be covered, applying an adhesive agent to the cleaned area of the interior part and to a backside of the leather layer, said applying of the adhesive agent to the interior part and applying of the adhesive agent onto the leather layer including the use of adhesive agents that are chemically similar, including a polyurethane base with about 10% hardener, said applying of the adhesive agent to the interior part including an adhesive having much less solvent than the adhesive agent applied onto the leather layer, ventilating the adhesive agents on the interior part and on the leather layer, applying the backside of the leather layer to the interior part in the area having said adhesive agent applied thereto, and hardening the adhesive agent.
Claim 21
Dependent Claim
154 words
Process for covering an interior part comprising: subjecting a leather layer to a heat treatment, cleaning by means of a solvent an area of the interior part that is to be covered, applying an adhesive agent to the cleaned area of the interior part and to a backside of the leather layer, said applying of the adhesive agent to the interior part and applying of the adhesive agent onto the leather layer including the use of adhesive agents that are chemically similar, including a polyurethane base with about 10% hardener, said applying of the adhesive agent to the interior part including an adhesive having much less solvent than the adhesive agent applied onto the leather layer, ventilating the adhesive agents on the interior part and on the leather layer, applying the backside of the leather layer to the interior part in the area having said adhesive agent applied thereto, and hardening the adhesive agent.
Claim 22
Dependent Claim
139 words
Process for covering an interior part comprising: subjecting a leather layer to a heat treatment, cleaning by means of a solvent an area of the interior part that is to be covered, applying an adhesive agent to the cleaned area of the interior part and to a backside of the leather layer, said applying of the adhesive agent to the interior part including the use of an adhesive agent having a viscosity of about 4,800 mPas, and said applying of the adhesive agent to the leather layer including the use of an adhesive agent having a viscosity of about 690 mPas, ventilating the adhesive agents on the interior part and on the leather layer, applying the backside of the leather layer to the interior part in the area having said adhesive agent applied thereto, and hardening the adhesive agent.
Claim 23
Dependent Claim
139 words
Process for covering an interior part comprising: subjecting a leather layer to a heat treatment, cleaning by means of a solvent an area of the interior part that is to be covered, applying an adhesive agent to the cleaned area of the interior part and to a backside of the leather layer, said applying of the adhesive agent to the interior part including the use of an adhesive agent having a viscosity of about 4,800 mPas, and said applying of the adhesive agent to the leather layer including the use of an adhesive agent having a viscosity of about 690 mPas, ventilating the adhesive agents on the interior part and on the leather layer, applying the backside of the leather layer to the interior part in the area having said adhesive agent applied thereto, and hardening the adhesive agent.
Claim 24
Dependent Claim
24 words
Process as in claim 1, wherein said hardening of the adhesive agent is performed at room temperature 20° C. for up to forty-eight hours.
Claim 25
Dependent Claim
34 words
Process as in claim 20, wherein said subjecting of the leather layer to a heat treatment is performed at a temperature of 100°-110° C. in a drying stove for about four to six hours.
Claim 26
Dependent Claim
74 words
Process as in claim 20, wherein said applying of an adhesive agent to the interior part and applying of the adhesive agent onto the leather layer include the use of adhesive agents that are chemically similar, including a polyurethane base with about 10% hardener, said applying of the adhesive agent to the interior part including the use of an adhesive having much less solvent than the adhesive agent being applied onto the leather layer.
Claim 27
Dependent Claim
56 words
Process as in claim 20, wherein said applying of the adhesive agent to the interior part includes the use of an adhesive agent having a viscosity of about 4,800 mPas, and wherein said applying of the adhesive agent to the leather layer includes the use of an adhesive agent having a viscosity of about 690 mPas.
Claim 28
Dependent Claim
34 words
Process as in claim 1, wherein said subjecting of the leather layer to a heat treatment is performed at a temperature of 100°-110° C. in a drying stove for about four to six hours.
Claim 29
Dependent Claim
19 words
Process as in claim 1, wherein said applying of a water-soluble protective film includes the use of polyvinyl alcohol.
Claim 30
Dependent Claim
71 words
Process as in claim 1, wherein said applying of an adhesive agent to the interior part and applying of the adhesive agent onto the leather layer include the use of adhesive agents that are chemically similar, including a polyurethane base with about 10% hardener, said applying of the adhesive agent to the interior part including an adhesive having much less solvent than the adhesive agent being applied onto the leather layer.
Claim 31
Dependent Claim
56 words
Process as in claim 1, wherein said applying of an adhesive agent to the interior part includes the use of an adhesive agent having a viscosity of about 4,800 mPas, and wherein said applying of the adhesive agent to the leather layer includes the use of an adhesive agent having a viscosity of about 690 mPas.
Claim 32
Dependent Claim
103 words
Process for covering an interior part comprising: subjecting a leather layer to a heat treatment at a temperature of about 100°-110° C. for about four to six hours, cleaning by means of a solvent an area of the interior part that is to be covered, applying an adhesive agent to the cleaned area of the interior part and to a backside of the leather layer, ventilating the adhesive agents on the interior part and on the leather layer, applying the backside of the leather layer to the interior part in the area having said adhesive agent applied thereto, and hardening the adhesive agent.
Claim 33
Dependent Claim
103 words
Process for covering an interior part comprising: subjecting a leather layer to a heat treatment at a temperature of about 100°-110° C. for about four to six hours, cleaning by means of a solvent an area of the interior part that is to be covered, applying an adhesive agent to the cleaned area of the interior part and to a backside of the leather layer, ventilating the adhesive agents on the interior part and on the leather layer, applying the backside of the leather layer to the interior part in the area having said adhesive agent applied thereto, and hardening the adhesive agent.
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) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |