Patent US4005961A successfully refreshed from Google Patents.
US4005961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivotally mounted injection molding apparatus
Assignee: Clextral SAS
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Filing: 1975-08-26
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Granted: 1977-02-01
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Expires: 1995-08-26
Abstract
Abstract In an injection moulding machine, the mould closure unit and injection unit are mounted on two arms articulated about a central pivot and each resting on the machine frame at a bearing point, the spacing of which is variable, the arms being relatively movable between a position for injection centrally of the mould and in which the arms are in extension one of the other, and a position for injection in the joint plane of the mould and in which the arms are substantially perpendicular to one another, the joint plane including the axis of the central pivot.
Inventors
- 👤 Marcel Manceau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:07
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/03; B29C45/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
173 words
An injection moulding machine comprising: a frame; a closure unit including a mould comprising two mould parts interengaging in a joint plane; an injection unit; and means associated with and supplying material for injection to said injection unit; means operatively associated with said arms for controlling mould closure and injection; a pair of arms articulated about a central pivot and each supported on said frame at a bearing point, means associated with said frame for varying the spacing of said bearing points; means mounting said injection unit on one of said arms; means mounting said closure unit on the other of said arms; and means associated with said arms for relatively moving said arms in a compass-like manner between a first position for injection centrally of said mould, in which first position said arms are in extension of each other, and a second position for injection in said joint plane of said mould, in which second position said arms are substantially perpendicular to each other, said joint plane including said central pivot axis.
Claim 2
Dependent Claim
173 words
An injection moulding machine comprising: a frame; a closure unit including a mould comprising two mould parts interengaging in a joint plane; an injection unit; and means associated with and supplying material for injection to said injection unit; means operatively associated with said arms for controlling mould closure and injection; a pair of arms articulated about a central pivot and each supported on said frame at a bearing point, means associated with said frame for varying the spacing of said bearing points; means mounting said injection unit on one of said arms; means mounting said closure unit on the other of said arms; and means associated with said arms for relatively moving said arms in a compass-like manner between a first position for injection centrally of said mould, in which first position said arms are in extension of each other, and a second position for injection in said joint plane of said mould, in which second position said arms are substantially perpendicular to each other, said joint plane including said central pivot axis.
Claim 3
Dependent Claim
29 words
A machine according to claim 1, wherein in said second injection position said central pivot axis is above said bearing points on said frame, for injection beneath said mould.
Claim 4
Dependent Claim
71 words
A machine according to claim 2 wherein said mould comprises a core part and a die part supported by two plates one of said plates being fixed and the other of said plates being movable relative to said closure unit, said fixed plate being above said central pivot axis and supporting said core part so that the moulded product will fall by gravity from said mould when said mould is opened.
Claim 5
Dependent Claim
64 words
A machine according to claim 2 wherein said mould comprises a core part and a die part supported by two plates, one of said plates being fixed and the other of said plates being movable relative to said closure unit, said movable plate being below said central pivot axis and supporting said core for mounting inserts on said core before closure of said mould.
Claim 6
Dependent Claim
38 words
A machine according to claim 1, including means mounting said closure unit for sliding movement along said other arm and means for adjusting the position of said joint plane by sliding said closure unit along said other arm.
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) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |