US4243364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety mechanism for injection-molding machine provided with take-off member
Assignee: HUSKY INJECTION MOLDING SYSTEMS Inc
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Filing: 1979-11-15
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Granted: 1981-01-06
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Expires: 1999-11-15
Abstract
Abstract A take-off plate, mounted near one of two relatively movable mold portions and insertable therebetween to remove freshly molded workpieces, enters a slot of a guide block rigid with the same mold portion upon moving from a retracted to an inserted position, the guide block also having a bore intersecting the slot and extending in the direction of mold motion. A pin on the other mold portion traverses the bore upon closure of the mold to prevent untimely insertion of the take-off plate; conversely, the take-off plate in its inserted position obstructs the bore to prevent premature mold closure.
Inventors
- 👤 Herbert Rees
- 👤 Paul Brown
- 👤 Miroslav Grund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:02
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/40; B29C45/42; B29C45/84; B29C45/03; B29C45/04; B29C45/0441; B29C45/045; B29C2045/0458; B29K; B29K2105/00; B29K2105/25; B29K2105/253
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
151 words
In a workpiece-shaping machine provided with a pair of relatively movable holders carrying respective mold portions displaceable between a mold-open position and a mold-closed position, the combination therewith of: a take-off member adjacent one of said holders provided with drive means for moving same from a retracted position into an inserted position between said mold portions in the mold-open position of said holders for extracting freshly molded workpieces from one of said mold portions; and lockout means for preventing any significant movement of said take-off member from said retracted position toward said inserted position with said holders displaced from said mold-open position and preventing any significant displacement of said holders from said mold-open position with said take-off member moved out of said retracted position, said lockout means including a control element on the other of said holders with a trajectory intersecting the path of a coacting element on said take-off member.
Claim 2
Dependent Claim
151 words
In a workpiece-shaping machine provided with a pair of relatively movable holders carrying respective mold portions displaceable between a mold-open position and a mold-closed position, the combination therewith of: a take-off member adjacent one of said holders provided with drive means for moving same from a retracted position into an inserted position between said mold portions in the mold-open position of said holders for extracting freshly molded workpieces from one of said mold portions; and lockout means for preventing any significant movement of said take-off member from said retracted position toward said inserted position with said holders displaced from said mold-open position and preventing any significant displacement of said holders from said mold-open position with said take-off member moved out of said retracted position, said lockout means including a control element on the other of said holders with a trajectory intersecting the path of a coacting element on said take-off member.
Claim 3
Dependent Claim
26 words
The combination defined in claim 1 wherein said one of said holders is provided with guide means defining part of said trajectory and of said path.
Claim 4
Dependent Claim
61 words
The combination defined in claim 2 wherein said control element is a rod extending in the direction of displacement of said holders said take-off member being a plate with an edge portion constituting said coacting element, said guide means comprising a block with a slot accommodating said edge portion and with a bore in line with said rod traversing said slot.
Claim 5
Dependent Claim
35 words
The combination defined in claim 3 wherein said rod has a tip received in said bore in said mold-open position, an extremity of said edge portion being received in said slot in said retracted position.
Claim 6
Dependent Claim
52 words
The combination defined in claim 1, 2, 3 or 4 wherein said one of said mold portions is provided with ejection means for transferring said freshly molded workpieces to said take-off member, further comprising switch means responsive to arrival of said take-off member in said inserted position for actuating said ejection means.
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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) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |