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US3353221A
Expired / Lapsed
US
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Locking device for injection molding apparatus
Assignee: Loma Industries Inc
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Filing: 1963-11-13
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Granted: 1967-11-21
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Expires: 1983-11-13
Abstract
No abstract record available.
Inventors
- 👤 Louis H Barnett
- 👤 Haynie Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:04
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/64; B29C45/641; B29C33/00; B29C33/20; B29C33/202; Y; Y10; Y10S; Y10S425/00; Y10S425/221
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
IN A PRESSURIZED MOLDING DEVICE HAVING LINEARLY SEPARABLE MOLD PARTS, A CLAMP TO HOLD THE MOLD PARTS TOGETHER AGAINST SEPARATING PRESSURES, WHICH INCLUDES A WEDGE ELEMENT ASSOCIATED WITH ONE MOLD PART, AT LEAST ONE TAPERED FACE PARALLEL TO THE WEDGE FACE TO FORM A POSITIVE CLAMP, SAID WEDGE ELEMENT ADAPTED TO BE SEATED SHORT OF THE BOTTOM, AND MEANS CONNECTED TO THE WEDGE ELEMENT TO HOLD THE MOLD PART TOGETHER WHEN THE WEDGE IS SEATED SAID CLAMP BEING FURTHER CHARACTERIZED IN THAT THE WEDGE IS POSITIONED ON A RIGID ARM EXTENDING FROM ONE MOLE PART AND OVERLAPPING THE OTHER MOLD PART, AND SAID WEDGE IS ADAPTED TO BE SEATED IN A PASSAGEWAY ASSOCIATED WITH THE OTHER MOLD.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |