US3917459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the production of Verneuil crystals
Assignee: Siemens AG
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Filing: 1974-05-13
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Granted: 1975-11-04
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Expires: 1994-05-13
Abstract
Abstract Verneuil crystals are produced by directing two reactive gases, such as O2 and H2 downwardly through separate passageways to combine outside a burner tip and ignite into a downwardly directed flame which impinges against the upper end of a seed crystal. One of the gas passageways is divided into two separate branches, one of which carries a portion of a reactive gas and powdered crystalline material to the burner tip for melting and deposition on a seed crystal.
Inventors
- 👤 Richard Falckenberg
- 👤 Herbert Lindner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:17
CPC Classifications
C; C30; C30B; C30B11/00; C30B11/04; C30B11/08; C30B11/10; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1028
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
426 words
AN APPARATUS FOR PRODUCING A VERNEUIL CRYSTAL, COMPRISING AN ENCLOSED HOLLOW OUTER BODY HAVING A VERTICAL AXIS AND BEING DEFINED BY AN UPPER CYLINDRICAL PORTION JOINED TO A LOWER CONICAL PORTION, SAID LOWER CONICAL PORTION HAVING A CYLINDRICAL FLOW PASSAGE AT A LOWER END OF SAID OUTER BODY WITH AN ORIFICE COMMUNICATING WITH AMBIENT ATMOSPHERE AND BEING IN CONCENTRIC RELATION TO SAID VERTICAL AXIS, SAID UPPER CYLINDRICAL PORTION HAVING A GAS INLET MEANS, AN ENCLOSED HOLLOW INNER BODY MOUNTED WITHIN SAID OUTER BODY AND HAVING A VERTICAL AXIS IN SUBSTANTIAL COINCIDING ALIGNMENT WITH THE VERTICAL AXIS OF SAID OUTER BODY SO AS TO DEFINE A FLOW PASSAGEWAY BETWEEN INNER WALLS OF SAID OUTER BODY AND OUTER WALLS OF SAID INNER BODY, SAID INNER BODY BEING GAS IMPERMEABLE IN RELATIONSHIP TO SAID OUTER BODY, SAID INNER BODY BEING DEFINED BY AN UPPER CYLINDRICAL PORTION JOINED TO A LOWER CONIAL PORTION, SAID INNER BODY HAVING A SCREEN-LIKE PARTITION RIGIDLY ATTACHED TO INTERIOR WALLS OF SAID INNER BODY AT THE JUNCTURE OF SAID UPPER AND LOWER PORTIONS OF SAID INNER BODY, SAID INNER BODY HAVING A GAS INLET DUCT MOUNTED CONCENTRICALLY IN RESPECT TO THE VERTICAL AXIS OF SAID INNER BODY AND EXTENDING FROM AN UPPER END OF SAID BODY TO AT LEAST SAID SCREENLIKE PARTITION, SAID LOWER CONICAL PORTION OF THE INNER BODY HAVING A CYLINDRICAL FLOW PASSAGE AT THE LOWER END OF SAID INNER BODY AND EXTENDING INTO SAID OUTER BODY CYLINDRICAL FLOW PASSAGE SO AS TO DEFINE A COINCIDING COMMOM PORTION ALIGNED COINCIDENTALLY WITH THE VERTICAL AXIS OF SAID OUTER BODY, SAID INNER BODY CYLINDRICAL FLOW PASSAGE TERMINATING PRIOR TO SAID ORIFICE OF SAID OUTER BODY CYLINDRICAL FLOW PASSAGE, AN ENCLOSED BURNER BODY ATTACHED TO SAID BODY ALONG THE OUTER BODY CYLINDRICAL FLOW PASSAGE AND AT A POINT ABOVE SAID ORIFICE OF THE OUTER BODY CYLINDRICAL FLOW PASSAGE, SAID BURNER BODY HAVING AN ORIFICE AT A LOWERMOST PORTION OF SAID BURNER BODY CONCENTRICALLY ENCOMPASSING SAID ORIFICE OF THE OUTER BODY CYLINDRICAL FLOW PASSAGE, SAID BURNER BODY HAVING A GAS INLET MEANS SPACED FROM SAID ORIFICE OF THE OUTER BODY CYLINDRICAL FLOW PASSAGE, MEANS FOR CONTROLLABLY FEEDING A FRIST FLAME-GENERATING REACTIVE GAS TO SAID GAS DUCT WITHIN THE INNER BODY AND TO SAID GAS INLET WITHIN THE BURNER BODY, MEANS FOR CONTROLLABLY FEEDING SECOND FLAME-GENERATING REACTIVE GAS TO SAID GAS INLET MEANS WITHIN THE OUTER BODY, A SUPPLY OF CRYSTAL-FORMING POWDER ON SAID SCREEN-LIKE PARTITION WITHIH THE INNER BODY, AND VIBRATION MEANS POSITIONED IN WORKING RELATION WITH AT LEAST SAID UPPER CYLINDRICAL PORTION OF THE INNER BODY.
Claim 2
Independent Claim
426 words
AN APPARATUS FOR PRODUCING A VERNEUIL CRYSTAL, COMPRISING AN ENCLOSED HOLLOW OUTER BODY HAVING A VERTICAL AXIS AND BEING DEFINED BY AN UPPER CYLINDRICAL PORTION JOINED TO A LOWER CONICAL PORTION, SAID LOWER CONICAL PORTION HAVING A CYLINDRICAL FLOW PASSAGE AT A LOWER END OF SAID OUTER BODY WITH AN ORIFICE COMMUNICATING WITH AMBIENT ATMOSPHERE AND BEING IN CONCENTRIC RELATION TO SAID VERTICAL AXIS, SAID UPPER CYLINDRICAL PORTION HAVING A GAS INLET MEANS, AN ENCLOSED HOLLOW INNER BODY MOUNTED WITHIN SAID OUTER BODY AND HAVING A VERTICAL AXIS IN SUBSTANTIAL COINCIDING ALIGNMENT WITH THE VERTICAL AXIS OF SAID OUTER BODY SO AS TO DEFINE A FLOW PASSAGEWAY BETWEEN INNER WALLS OF SAID OUTER BODY AND OUTER WALLS OF SAID INNER BODY, SAID INNER BODY BEING GAS IMPERMEABLE IN RELATIONSHIP TO SAID OUTER BODY, SAID INNER BODY BEING DEFINED BY AN UPPER CYLINDRICAL PORTION JOINED TO A LOWER CONIAL PORTION, SAID INNER BODY HAVING A SCREEN-LIKE PARTITION RIGIDLY ATTACHED TO INTERIOR WALLS OF SAID INNER BODY AT THE JUNCTURE OF SAID UPPER AND LOWER PORTIONS OF SAID INNER BODY, SAID INNER BODY HAVING A GAS INLET DUCT MOUNTED CONCENTRICALLY IN RESPECT TO THE VERTICAL AXIS OF SAID INNER BODY AND EXTENDING FROM AN UPPER END OF SAID BODY TO AT LEAST SAID SCREENLIKE PARTITION, SAID LOWER CONICAL PORTION OF THE INNER BODY HAVING A CYLINDRICAL FLOW PASSAGE AT THE LOWER END OF SAID INNER BODY AND EXTENDING INTO SAID OUTER BODY CYLINDRICAL FLOW PASSAGE SO AS TO DEFINE A COINCIDING COMMOM PORTION ALIGNED COINCIDENTALLY WITH THE VERTICAL AXIS OF SAID OUTER BODY, SAID INNER BODY CYLINDRICAL FLOW PASSAGE TERMINATING PRIOR TO SAID ORIFICE OF SAID OUTER BODY CYLINDRICAL FLOW PASSAGE, AN ENCLOSED BURNER BODY ATTACHED TO SAID BODY ALONG THE OUTER BODY CYLINDRICAL FLOW PASSAGE AND AT A POINT ABOVE SAID ORIFICE OF THE OUTER BODY CYLINDRICAL FLOW PASSAGE, SAID BURNER BODY HAVING AN ORIFICE AT A LOWERMOST PORTION OF SAID BURNER BODY CONCENTRICALLY ENCOMPASSING SAID ORIFICE OF THE OUTER BODY CYLINDRICAL FLOW PASSAGE, SAID BURNER BODY HAVING A GAS INLET MEANS SPACED FROM SAID ORIFICE OF THE OUTER BODY CYLINDRICAL FLOW PASSAGE, MEANS FOR CONTROLLABLY FEEDING A FRIST FLAME-GENERATING REACTIVE GAS TO SAID GAS DUCT WITHIN THE INNER BODY AND TO SAID GAS INLET WITHIN THE BURNER BODY, MEANS FOR CONTROLLABLY FEEDING SECOND FLAME-GENERATING REACTIVE GAS TO SAID GAS INLET MEANS WITHIN THE OUTER BODY, A SUPPLY OF CRYSTAL-FORMING POWDER ON SAID SCREEN-LIKE PARTITION WITHIH THE INNER BODY, AND VIBRATION MEANS POSITIONED IN WORKING RELATION WITH AT LEAST SAID UPPER CYLINDRICAL PORTION OF THE INNER BODY.
Claim 3
Dependent Claim
68 words
An apparatus as defined in claim 1 wherein said upper cylindrical portion of the inner body is comprised of an upper section joined to a lower section by an elastic sleeve member, said screen-like partition being rigidly attached only to said lower section and said gas inlet duct within the inner body being comprised of an upper section joined to a lower section by an elastic sleeve member.
Claim 4
Dependent Claim
29 words
An apparatus as defined in claim 2 wherein said vibration means is positioned in working relation with said lower section of the upper cylindrical portion of the inner body.
Claim 5
Dependent Claim
22 words
An apparatus as defined in claim 1 wherein said gas inlet duct within the inner body is attached to said screen-like partition.
Claim 6
Dependent Claim
30 words
An apparatus as defined in claim 1 wherein the orifice of said outer body cylindrical flow passage and the orifice of said burner body are located in an identical plane.
Claim 7
Dependent Claim
64 words
An apparatus as defined in claim 2 wherein said vibration means comprises a mechanism producing horizontally directed vibrations and a mechanism producing vertically directed vibrations, said mechanisms including a regulating means for controlling the frequency and intensity of said vibrations so that the horizontally directed vibrations are, in terms of frequency and intensity, about 1 to 10 times greater than the vertically directed vibrations.
References Cited (Backward Citations)
US2591561A
Cited
US2792287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |