US3589199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum sampler with porous mold insert
Assignee: Alcoa Corp
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Filing: 1970-02-19
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Granted: 1971-06-29
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Expires: 1990-02-19
Abstract
Abstract Apparatus for casting molten metal, particularly for sampling purposes, the apparatus including a mold housing having a hollow space therein, and a mold entrance portion, removably attached to the housing so as to close the space therein except for an opening in the entrance portion. A porous mold insert is disposed within the housing space, the insert having a cavity therein facing the mold entrance portion for receiving and holding a casting or sample of molten metal therein. A vacuum means is attached to the housing for drawing air from the cavity through the pores of the insert to draw molten metal into the cavity when the entrance portion is disposed in fluid communication with a source of molten metal.
Inventors
- 👤 Donaid J Levin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:43
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/14; G01N1/1409; Y; Y10; Y10S; Y10S249/00; Y10S249/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
179 words
A device for casting molten metal comprising a mold housing having a hollow space therein, a mold end portion having an entrance opening for disposal in fluid communication with a source of molten metal, said end portion being removably attached to said housing so as to close said hollow space except for the entrance opening, a unitary porous mold insert disposed within said hollow space, aNd having a cavity therein facing the mold entrance for receiving and holding molten metal, said insert comprising an outer tubular wall structure of porous metal and a base of solid, impervious metal of high thermal conductivity metallurgically bonded within said tubular wall structure, and means for drawing air from said cavity through said porous insert to provide a vacuum in the cavity and thereby draw molten metal into said cavity when said mold end portion is disposed in fluid communication with a source of the molten metal, said housing, mold end portion and insert being effective to chill the molten metal drawn into the cavity to provide a solidified casting of the metal.
Claim 2
Independent Claim
179 words
A device for casting molten metal comprising a mold housing having a hollow space therein, a mold end portion having an entrance opening for disposal in fluid communication with a source of molten metal, said end portion being removably attached to said housing so as to close said hollow space except for the entrance opening, a unitary porous mold insert disposed within said hollow space, aNd having a cavity therein facing the mold entrance for receiving and holding molten metal, said insert comprising an outer tubular wall structure of porous metal and a base of solid, impervious metal of high thermal conductivity metallurgically bonded within said tubular wall structure, and means for drawing air from said cavity through said porous insert to provide a vacuum in the cavity and thereby draw molten metal into said cavity when said mold end portion is disposed in fluid communication with a source of the molten metal, said housing, mold end portion and insert being effective to chill the molten metal drawn into the cavity to provide a solidified casting of the metal.
Claim 3
Dependent Claim
15 words
The device of claim 1 in which the metal of the solid base is copper.
Claim 4
Dependent Claim
171 words
Apparatus for sampling molten metal comprising a mold housing having a hollow space therein, a mold entrance tip adapted for disposal into a bath of molten metal, and being removably attached to said housing so as to close said hollow space except for an opening in the tip, a unitary porous mold insert disposed within said space, and having a cavity therein facing the mold entrance tip for receiving and holding a sample of molten metal, said insert comprising an outer tubular wall structure of porous metal and a base of solid, impervious metal of high thermal conductivity metallurgically bonded within said tubular wall structure, and means for drawing air from said cavity through said porous insert to provide a vacuum in said cavity and thereby draw molten metal into said cavity when said mold tip is disposed in a bath of molten metal, said housing, porous insert and mold entrance tip being effective to chill the molten metal drawn into said cavity to provide a solidified sample of the metal
Claim 5
Dependent Claim
171 words
Apparatus for sampling molten metal comprising a mold housing having a hollow space therein, a mold entrance tip adapted for disposal into a bath of molten metal, and being removably attached to said housing so as to close said hollow space except for an opening in the tip, a unitary porous mold insert disposed within said space, and having a cavity therein facing the mold entrance tip for receiving and holding a sample of molten metal, said insert comprising an outer tubular wall structure of porous metal and a base of solid, impervious metal of high thermal conductivity metallurgically bonded within said tubular wall structure, and means for drawing air from said cavity through said porous insert to provide a vacuum in said cavity and thereby draw molten metal into said cavity when said mold tip is disposed in a bath of molten metal, said housing, porous insert and mold entrance tip being effective to chill the molten metal drawn into said cavity to provide a solidified sample of the metal
Claim 6
Dependent Claim
14 words
The apparatus of claim 3 in which the solid base of metal is copper.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |