Patent US5902533A successfully refreshed from Google Patents.
US5902533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of compression - injection molding
Assignee: Individual
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Filing: 1996-10-10
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Granted: 1999-05-11
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Expires: 2016-10-10
Abstract
Abstract The present method includes an apparatus and method for forming articles having compression molding means and injection molding means. Simultaneous activation of the injection molding means and compression molding means produces an integral article having a compression molded portion and an injection molded portion.
Inventors
- 👤 Michael Munger
- 👤 Martin Schuurman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:36
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/02; B29C43/14; B29C43/146; B29C45/00; B29C45/14; B29C45/1418; B29C45/14778; B29C45/14811; B29C43/021; B29C2043/026; B29C43/32; B29C43/34; B29C2043/3444; B29C43/36; B29C2043/3665; B29C43/42; B29C2043/425; B29C2045/1486; B29C2045/14868; B29C2045/14877; B29C51/00; B29C51/08; B29C51/082; B29C51/26; B29C51/261; B29C51/262; B29L; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/3041
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
191 words
A method of molding plastic material for forming an article from moldable plastic materials comprising the steps of: providing a compression molding apparatus including a cover mold with an inner and outer surface, the inner surface being shaped to mold the outer surface of an article separated by a gap from an ejector mold having an inner and outer surface, the outer surface of said ejector mold being shaped to mold the inner surface of said article; providing an injection molding apparatus, said injection molding apparatus including an injection mold, said injection mold being separate from said compression molding apparatus, said injection mold being in fluid communication with said compression molding apparatus, said injection molding apparatus being positioned so that said injection molding apparatus communicates with said ejector mold; heating a compression moldable plastic material in contact with said compression molding apparatus; heating an injection moldable plastic material in contact with said injection molding apparatus to substantially the same temperature as the compression moldable plastic material; and activating said compression and injection molding apparatus to produce a substantially integral molded article having a compression molded portion and an injection molded portion.
Claim 2
Independent Claim
191 words
A method of molding plastic material for forming an article from moldable plastic materials comprising the steps of: providing a compression molding apparatus including a cover mold with an inner and outer surface, the inner surface being shaped to mold the outer surface of an article separated by a gap from an ejector mold having an inner and outer surface, the outer surface of said ejector mold being shaped to mold the inner surface of said article; providing an injection molding apparatus, said injection molding apparatus including an injection mold, said injection mold being separate from said compression molding apparatus, said injection mold being in fluid communication with said compression molding apparatus, said injection molding apparatus being positioned so that said injection molding apparatus communicates with said ejector mold; heating a compression moldable plastic material in contact with said compression molding apparatus; heating an injection moldable plastic material in contact with said injection molding apparatus to substantially the same temperature as the compression moldable plastic material; and activating said compression and injection molding apparatus to produce a substantially integral molded article having a compression molded portion and an injection molded portion.
Claim 3
Dependent Claim
40 words
A method of compression-injection molding according to claim 1 wherein said injection molding apparatus comprises said injection mold; a holding device for the injection moldable plastic material; and an injection nozzle extending from said holding device to said injection mold.
Claim 4
Dependent Claim
21 words
A method of compression-injection molding according to claim 2 wherein said holding device for the injection moldable plastic material is heated.
Claim 5
Dependent Claim
15 words
A method of compression-injection molding according to claim 3 wherein said injection nozzle is heated.
Claim 6
Dependent Claim
25 words
A method of compression-injection molding according to claim 4 further comprising the step of depositing said compression moldable plastic material into said compression molding apparatus.
Claim 7
Dependent Claim
28 words
A method of compression-injection molding according to claim 5 further comprising the steps of providing a frame for holding compression moldable cover stock within said compression molding apparatus.
Claim 8
Independent Claim
193 words
A method of forming a substantially integral molded article from moldable plastic materials, said article having a compression molded portion and an injection molded portion, the method comprising: providing a compression molding apparatus including a cover mold with an inner and outer surface, the inner surface being shaped to mold the outer surface of an article separated by a gap from an ejector mold having an inner and outer surface, the outer surface of said ejector mold being shaped to mold the inner surface of said article; providing an injection molding apparatus, said injection molding apparatus including an injection mold, said injection mold being separate from said compression molding apparatus, said injection mold being in fluid communication with said compression molding apparatus, said injection molding apparatus being positioned so that said injection molding apparatus communicates with said ejector mold; heating a compression moldable plastic material in contact with said compression molding apparatus to a compression-molding temperature; heating an injection moldable plastic material in contact with said injection molding apparatus to an injection-molding temperature; and activating said compression and injection molding apparatus substantially in a simultaneous manner to produce the substantially integral molded article.
Claim 9
Independent Claim
193 words
A method of forming a substantially integral molded article from moldable plastic materials, said article having a compression molded portion and an injection molded portion, the method comprising: providing a compression molding apparatus including a cover mold with an inner and outer surface, the inner surface being shaped to mold the outer surface of an article separated by a gap from an ejector mold having an inner and outer surface, the outer surface of said ejector mold being shaped to mold the inner surface of said article; providing an injection molding apparatus, said injection molding apparatus including an injection mold, said injection mold being separate from said compression molding apparatus, said injection mold being in fluid communication with said compression molding apparatus, said injection molding apparatus being positioned so that said injection molding apparatus communicates with said ejector mold; heating a compression moldable plastic material in contact with said compression molding apparatus to a compression-molding temperature; heating an injection moldable plastic material in contact with said injection molding apparatus to an injection-molding temperature; and activating said compression and injection molding apparatus substantially in a simultaneous manner to produce the substantially integral molded article.
Claim 10
Dependent Claim
40 words
A method of compression-injection molding according to claim 7 wherein said injection molding apparatus comprises said injection mold; a holding device for the injection moldable plastic material; and an injection nozzle extending from said holding device to said injection mold.
Claim 11
Dependent Claim
15 words
A method of compression-injection molding according to claim 8 wherein said injection nozzle is heated.
Claim 12
Dependent Claim
23 words
A method of compression-injection molding according to claim 7 wherein said compression-molding temperature is substantially the same temperature as the said injection-molding temperature.
Claim 13
Independent Claim
200 words
A method of forming a substantially integral molded article from moldable plastic material, said article having a compression molded portion and an injection molded portion, the method comprising: providing a compression molding apparatus including a cover mold with an inner and outer surface, the inner surface being shaped to mold the outer surface of an article separated by a gap from an ejector mold having an inner and outer surface, the outer surface of said ejector mold being shaped to mold the inner surface of said article; providing an injection molding apparatus, said injection molding apparatus including an injection mold, said injection mold being separate from said compression molding apparatus, said injection mold being in fluid communication with said compression molding apparatus, said injection molding apparatus being positioned so that said injection molding apparatus communicates with said ejector mold; activating said compression molding apparatus by heating a portion of said compression molded material to a compression-molding temperature; activating said injection molding apparatus by heating said injection molded material to an injection molding temperature to form an injection molded portion, said injection molded portion being a contoured article that shares a common surface and is integral with the compression molded portion.
Claim 14
Independent Claim
200 words
A method of forming a substantially integral molded article from moldable plastic material, said article having a compression molded portion and an injection molded portion, the method comprising: providing a compression molding apparatus including a cover mold with an inner and outer surface, the inner surface being shaped to mold the outer surface of an article separated by a gap from an ejector mold having an inner and outer surface, the outer surface of said ejector mold being shaped to mold the inner surface of said article; providing an injection molding apparatus, said injection molding apparatus including an injection mold, said injection mold being separate from said compression molding apparatus, said injection mold being in fluid communication with said compression molding apparatus, said injection molding apparatus being positioned so that said injection molding apparatus communicates with said ejector mold; activating said compression molding apparatus by heating a portion of said compression molded material to a compression-molding temperature; activating said injection molding apparatus by heating said injection molded material to an injection molding temperature to form an injection molded portion, said injection molded portion being a contoured article that shares a common surface and is integral with the compression molded portion.
Claim 15
Dependent Claim
40 words
A method of compression-injection molding according to claim 11 wherein said injection molding apparatus comprises said injection mold; a holding device for the injection moldable plastic material; and an injection nozzle extending from said holding device to said injection mold.
Claim 16
Dependent Claim
23 words
A method of compression-injection molding according to claim 11 wherein said compression-molding temperature is substantially the same temperature as the said injection-molding temperature.
Claim 17
Dependent Claim
37 words
A method of compression-injection molding according to claim 11 wherein the activation of said compression-molding apparatus occurs substantially in a simultaneous manner with the activation of said injection molding apparatus to produce the substantially integral molded article.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2002-05-10 | 2002-11-09 | 2003-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-05-10 | 2006-11-09 | 2007-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-05-10 | 2010-11-09 | 2011-05-11 | $7700.00 | Window Closed / Lapsed |