US4970103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preformed part made of plastics with integrally formed rubber elastic parts
Assignee: Woco Franz Josef Wolf and Co GmbH
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Filing: 1989-02-06
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Granted: 1990-11-13
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Expires: 2009-02-06
Abstract
Abstract A preformed part made of plastics material, especially a sheet-like plastics part made by injection molding is formed to be integral with elastic portions. The elastic portions serve as seals, as for feed-through holes in the plastics part. A ring-shaped circular closed protruding edge or ring-shaped rib, formed integrally with the plastics part around the regions to be coated with rubber, limit the region where elastic material is deposited to integrate with the plastics material. An annular region around rib has a radial span around the recesses, bore holes or edges into which the rubber material is injected, and enables insertion of the elastic material despite the presence of differential thermal expansion between the plastic part and a metal forming tool to shape the elastic material.
Inventors
- 👤 Franz J. Wolf
- 👤 Peter Kaminski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:23
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/0038; B29C33/0044; B29C70/00; B29C70/68; B29C70/74; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24479; Y10T428/24777
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
118 words
In a part made of plastic, said part including a section having one of an edge or a hole coated with an elastic material for effective sealing thereat, said elastic material being applied to said section with a tool having a feed channel for feeding said elastic material, the improvement comprising: a protruding raised rib extending around said edge or hole, said rib being spaced from said edge or hole by a predetermined distance determined by the difference between the linear thermal expansion coefficient of said plastic and the material of the tool having said elastic material feed channel, said rib confining said elastic material to a zone defined by said raised rib and said edge or hole.
Claim 2
Dependent Claim
118 words
In a part made of plastic, said part including a section having one of an edge or a hole coated with an elastic material for effective sealing thereat, said elastic material being applied to said section with a tool having a feed channel for feeding said elastic material, the improvement comprising: a protruding raised rib extending around said edge or hole, said rib being spaced from said edge or hole by a predetermined distance determined by the difference between the linear thermal expansion coefficient of said plastic and the material of the tool having said elastic material feed channel, said rib confining said elastic material to a zone defined by said raised rib and said edge or hole.
Claim 3
Dependent Claim
23 words
The part according to claim 1, wherein the side of said rib facing said edge or hole is covered by said elastic material.
Claim 4
Dependent Claim
13 words
The part according to claim 1, wherein said tool is made of steel.
Claim 5
Dependent Claim
26 words
A part according to claim 1, wherein: said elastic material is applied to contact a portion of a surface of said raised rib defining said zone.
Claim 6
Dependent Claim
25 words
A part according to claim 4, wherein: said elastic material and said plastics material remain in contact following application of the former to the latter.
Claim 7
Dependent Claim
23 words
A part according to claim 5, wherein: said elastic material comprises rubber material vulcanized in place following application confined by said raised rib.
Claim 8
Dependent Claim
21 words
A part according to claim 4, wherein: said predetermined distance is at least equal to the width of said raised rib.
Claim 9
Dependent Claim
23 words
A part according to claim 4, wherein: said elastic material comprises rubber material vulcanized in place following application confined by said raised rib.
Claim 10
Dependent Claim
25 words
A part according to claim 1, wherein: said elastic material and said plastics material remain in contact following application of the former to the latter.
Claim 11
Dependent Claim
23 words
A part according to claim 9, wherein: said elastic material comprises rubber material vulcanized in place following application confined by said raised rib.
Claim 12
Dependent Claim
21 words
A part according to claim 9, wherein: said predetermined distance is at least equal to the width of said raised rib.
Claim 13
Dependent Claim
21 words
A part according to claim 1, wherein: said predetermined distance is at least equal to the width of said raised rib.
Claim 14
Dependent Claim
23 words
A part according to claim 12, wherein: said elastic material comprises rubber material vulcanized in place following application confined by said raised rib.
Claim 15
Dependent Claim
23 words
A part according to claim 1, wherein: said elastic material comprises rubber material vulcanized in place following application confined by said raised rib.
Claim 16
Dependent Claim
31 words
A part according to claim 1, said section including one of a hole, bore and through-hole, and wherein said zone is within a region defined and substantially surrounded by the rib.
References Cited (Backward Citations)
US3398222A
Cited
DE2145104A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-12 | 1994-05-14 | 1994-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-12 | 1998-05-14 | 1998-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-12 | 2002-05-14 | 2002-11-13 | $7700.00 | Window Closed / Lapsed |