US3122431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a scanner element for particle analyzers
Assignee: Coulter Electronics Inc
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Filing: 1961-03-03
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Granted: 1964-02-25
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Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
- 👤 Wallace H Coulter
- 👤 Fred L Heuschkel
- 👤 Robert H Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:15
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/10; G01N15/1031; G01N15/12; G01N15/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A METHOD OF MAKING A SCANNER ELEMENT OF THE CHARACTER DESCRIBED WHICH IS IN THE FORM OF A WAFER OF HIGH HEAT RESISTIVITY HAVING A CENTRAL APERTURE FUSEDLY SECURED TO THE WALL OF A TUBE VITREOUS MATERIAL HAVING A SUBSTANTIALLY LOWER HEAT RESISTIVITY IN ALIGNMENT WITH AN ORIFICE IN SAID TUBE WHICH COMPRISES: FORMING AN ORIFICE IN SAID TUBE WALL BY PULLING A HEATED POINT OF SAID WALL OUT OF SAID WALL, GRINDING THE WALL FLAT AT SAID ORIFICE, LAYING THE WAFER ON THE ORIFICE WITH ITS SQUARE ALIGNED THEREWITH, HEATING THE WAFER ON THE EXPOSED SURFACE THEREOF BY APPLYING THE EXTREMITY OF A POINTED FLAME ONLY ADJACENT THE PERIPHERY OF SAID EXPOSED SURFACE WHEREBY THE HEAT IS TRANSMITTED THROUGH THE WAFER TO THE VITREOUS WALL CAUSING FUSING OF SAID WAFER TO SAID WALL.
Claim 2
Independent Claim
134 words
A METHOD OF MAKING A SCANNER ELEMENT OF THE CHARACTER DESCRIBED WHICH IS IN THE FORM OF A WAFER OF HIGH HEAT RESISTIVITY HAVING A CENTRAL APERTURE FUSEDLY SECURED TO THE WALL OF A TUBE VITREOUS MATERIAL HAVING A SUBSTANTIALLY LOWER HEAT RESISTIVITY IN ALIGNMENT WITH AN ORIFICE IN SAID TUBE WHICH COMPRISES: FORMING AN ORIFICE IN SAID TUBE WALL BY PULLING A HEATED POINT OF SAID WALL OUT OF SAID WALL, GRINDING THE WALL FLAT AT SAID ORIFICE, LAYING THE WAFER ON THE ORIFICE WITH ITS SQUARE ALIGNED THEREWITH, HEATING THE WAFER ON THE EXPOSED SURFACE THEREOF BY APPLYING THE EXTREMITY OF A POINTED FLAME ONLY ADJACENT THE PERIPHERY OF SAID EXPOSED SURFACE WHEREBY THE HEAT IS TRANSMITTED THROUGH THE WAFER TO THE VITREOUS WALL CAUSING FUSING OF SAID WAFER TO SAID WALL.
References Cited (Backward Citations)
US1548611A
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US2345498A
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US2398737A
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US2504504A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |