US3643732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal casting apparatus
Assignee: Individual
•
Filing: 1969-12-16
•
Granted: 1972-02-22
•
Expires: 1989-12-16
Abstract
Abstract A low-pressure metal die casting furnace including a top diesupporting structure mounted on a cantilevered support capable of pivotal movement about a vertical column at one side of the furnace, and also capable of vertical movement under control of a ram to give access to the furnace top. The ram controlling the top die structure can also be coupled to a lower die-supporting plate, to raise the plate. A single mechanism can serve two adjacent furnaces.
Inventors
- 👤 Jon E M Carlsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:32
CPC Classifications
B; B22; B22D; B22D18/00; B22D18/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
118 words
A die mounting structure for a low-pressure die casting apparatus, comprising a frame adapted to be mounted on a furnace, said frame including a lower, substantially horizontal, diesupporting plate member, an upper, substantially horizontal, plate member, and powered means arranged to move said upper plate member vertically towards and away from the lower plate member, in which there are provided attachment means capable of connecting the upper and lower plate members for simultaneous vertical movement and means mounting the upper plate member for pivotal movement about a vertical axis, whereby the lower plate member can be attached to the upper plate member, raised by the powered means and swung laterally away from the furnace about the vertical axis.
Claim 2
Dependent Claim
118 words
A die mounting structure for a low-pressure die casting apparatus, comprising a frame adapted to be mounted on a furnace, said frame including a lower, substantially horizontal, diesupporting plate member, an upper, substantially horizontal, plate member, and powered means arranged to move said upper plate member vertically towards and away from the lower plate member, in which there are provided attachment means capable of connecting the upper and lower plate members for simultaneous vertical movement and means mounting the upper plate member for pivotal movement about a vertical axis, whereby the lower plate member can be attached to the upper plate member, raised by the powered means and swung laterally away from the furnace about the vertical axis.
Claim 3
Dependent Claim
21 words
A structure as claimed in claim 1, in which the lower plate member is pivotally mounted on the said vertical axis.
Claim 4
Dependent Claim
48 words
A structure as claimed in claim 2, in which the lower plate member comprises an upper part releasably secured to a lower part, the upper part being arranged to support the die and to carry a feed nozzle, the lower part being pivoted on the said vertical axis.
Claim 5
Dependent Claim
53 words
A structure as claimed in claim 2, in which each plate member has a curved slot spaced from the vertical axis, which slots receive a vertical rod when the plate members are in position for casting, and releasable clamping means are provided for clamping the plate members and rod together in that position.
Claim 6
Dependent Claim
27 words
A structure as claimed in claim 1 in which the powered means is a hydraulic ram having a vertically movable piston connected to the upper plate member.
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |