US4865793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of insert injection molding
Assignee: Resonac Holdings Corp
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Filing: 1986-11-21
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Granted: 1989-09-12
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Expires: 2006-11-21
Abstract
Abstract An injection molding method in which an insert is inserted into a metal mold assembly in advance of molten material by providing a guide member having an aperture in which the insert is inserted, the insert and aperture having relative dimensions such that the insert is forcibly retained in the aperture and to properly locate the insert for injection molding and thereby prevent displacement of the insert during injection molding.
Inventors
- 👤 Takashi Suzuki
- 👤 Tetsuo Yasuda
- 👤 Otohiko Miyauchi
- 👤 Junji Yotsuyanagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:55
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/14; B29C45/14778; B29C45/14811; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B29K; B29K2705/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
An injection molding method in which an insert is inserted into a metal mold assembly in advance of molten molding material, and the molten molding material is injected into said metal mold assembly thereafter, comprising the steps of: providing a guide member, said guide member having an aperture, said aperture and said insert having relative dimensions such that said insert is forcibly retained in said aperture by said guide member; inserting said insert into said aperture of said guide member to thereby forcibly retain said insert, said guide member being positioned relative to said mold assembly to properly locate said insert for the injection molding; and to thereby prevent displacement of said insert during injection molding; and injection molding the molten molding material.
Claim 2
Dependent Claim
123 words
An injection molding method in which an insert is inserted into a metal mold assembly in advance of molten molding material, and the molten molding material is injected into said metal mold assembly thereafter, comprising the steps of: providing a guide member, said guide member having an aperture, said aperture and said insert having relative dimensions such that said insert is forcibly retained in said aperture by said guide member; inserting said insert into said aperture of said guide member to thereby forcibly retain said insert, said guide member being positioned relative to said mold assembly to properly locate said insert for the injection molding; and to thereby prevent displacement of said insert during injection molding; and injection molding the molten molding material.
Claim 3
Dependent Claim
15 words
The method as claimed in claim 11, wherein said guide member comprises a stripper plate.
Claim 4
Dependent Claim
22 words
The method as claimed in claim 1, wherein said guide member is used to remove a molding from said metal mold assembly.
Claim 5
Dependent Claim
16 words
The method as claimed in claim 1, wherein said insert is held additionally by suction means.
Claim 6
Dependent Claim
15 words
The method as claimed in claim 1, wherein said guide member is provided with ribs.
Claim 7
Dependent Claim
24 words
The method as claimed in claim 1, wherein said guide member is provided with a draft adjusted such that it abuts against said insert.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |