US3575233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diecasting mold
Assignee: Individual
•
Filing: 1968-10-07
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Granted: 1971-04-20
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Expires: 1988-10-07
Abstract
Abstract A separable diecasting mold is composed of a cover support plate to which the die core is attached, an ejector die having a die cavity, and a center plate between the cover support plate and the ejector die through which the core extends. Casting material is supplied under pressure through a groove in the joint between the cover support plate and center plate and leading to channels in the wall of the opening through the center plate, which channels terminate in the die cavity.
Inventors
- 👤 Joachim Mahle
- 👤 Walter Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:33
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
159 words
A separable diecasting mold enclosing a die cavity and comprising a movable ejector die plate (1), a cover die composed of a fixed support plate (4) and a core (3) attached to it, and a center plate (5) between said cover die and said ejector die through which said core extends, said center plate (5) being separable from said cover die in the same direction said ejector die moves when said mold is opened, a metal injection apparatus including a short cylinder (7) movable parallel to the opening and closing direction movement of said injector die, and channel means between said cylinder and said die cavity for conveying liquid casting material from said cylinder into the die cavity, said channel means including at least one supply channel (10) in the wall of the opening through the center plate and extending between the surfaces of said core (3) and said center plate (5) in the axial direction of said mold.
Claim 2
Dependent Claim
159 words
A separable diecasting mold enclosing a die cavity and comprising a movable ejector die plate (1), a cover die composed of a fixed support plate (4) and a core (3) attached to it, and a center plate (5) between said cover die and said ejector die through which said core extends, said center plate (5) being separable from said cover die in the same direction said ejector die moves when said mold is opened, a metal injection apparatus including a short cylinder (7) movable parallel to the opening and closing direction movement of said injector die, and channel means between said cylinder and said die cavity for conveying liquid casting material from said cylinder into the die cavity, said channel means including at least one supply channel (10) in the wall of the opening through the center plate and extending between the surfaces of said core (3) and said center plate (5) in the axial direction of said mold.
Claim 3
Dependent Claim
61 words
A mold as in claim 1, said channel means comprising several supply channels (10), extending between the contacting surfaces of said core (3) and said center plate (5) in the axial direction of said mold, an annular channel (9) around said core communicating with said supply channels (10), and a groove (11) extending between said annular channel and said cylinder (7).
Claim 4
Dependent Claim
22 words
A mold as in claim 2, wherein said annular channel (9) is interrupted opposite said groove (11) by a wall (12, 12'').
Claim 5
Dependent Claim
51 words
A mold as in claim 3, said center plate further comprising slide member means (15, 16) movable transversely to the closing direction of the mold for engaging the solidified casting material in the core channels (10) and annular channel (9) and stripping the casting mAterial away when the mold is opened.
Claim 6
Dependent Claim
34 words
A mold as in claim 4, further comprising ends (16) on said slide member means swingable in the opening direction of the mold, and stops (20, 21) for limiting the swinging of said ends.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |