US3243042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Southwestern Engineering Co
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Filing: 1962-11-29
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Granted: 1966-03-29
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Expires: 1982-11-29
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Moulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:16
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/48; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49874; Y10T29/49945
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A SCREEN STRUCTURE FOR A MATERIAL CLASSIFIER COMPRISING: (A) ANNULAR LOWER AND UPPER SCREEN FACING MEMBERS, SAID FACING MEMBERS BEING FORMED OF METAL OF SUBSTANTIALLY UNIFORM THICKNESS; (B) EACH FACING MEMBER INCLUDING A CYLINDRICAL SECTION, AN UPPER PLANAR SECTION AND A LOWER PLANAR SECTION JOINED TO THE AXIL EXTREMITIES OF SAID CYLINDRICAL SECTION, THE CORRESPONDING SECTIONS OF SAID FACING MEMBERS BEING DISPOSED IN CONFRONTING RELATION WHEN SAID FACING MEMBERS ARE ASSEMBLED BY MOVING SAID CYLINDRICAL SECTIONS INTO AXIALLY OVERLAPPING RELATION; (C) SAID UPPER PLANAR SECTIONS BEING RADIALLY INWARDLY DIRECTED, AND SAID LOWER PLANAR SECTIONS BEING RADIALLY OUTWARDLY DIRECTED; (D) AND A CIRCULAR SCREEN HAVING A MARGIN ENTERING BETWEEN SAID UPPER CONFRONTING SECTIONS AND INITIALLY EMERGING FROM SAID LOWER CONFRONTING SECTIONS; (E) AND MEANS BETWEEN SAID FACING MEMBERS FOR SECURING SAID SCREEN BY ITS MARGIN UPON AXIAL ASSEMBLY OF SAID FACING MEMBERS.
Claim 2
Dependent Claim
141 words
A SCREEN STRUCTURE FOR A MATERIAL CLASSIFIER COMPRISING: (A) ANNULAR LOWER AND UPPER SCREEN FACING MEMBERS, SAID FACING MEMBERS BEING FORMED OF METAL OF SUBSTANTIALLY UNIFORM THICKNESS; (B) EACH FACING MEMBER INCLUDING A CYLINDRICAL SECTION, AN UPPER PLANAR SECTION AND A LOWER PLANAR SECTION JOINED TO THE AXIL EXTREMITIES OF SAID CYLINDRICAL SECTION, THE CORRESPONDING SECTIONS OF SAID FACING MEMBERS BEING DISPOSED IN CONFRONTING RELATION WHEN SAID FACING MEMBERS ARE ASSEMBLED BY MOVING SAID CYLINDRICAL SECTIONS INTO AXIALLY OVERLAPPING RELATION; (C) SAID UPPER PLANAR SECTIONS BEING RADIALLY INWARDLY DIRECTED, AND SAID LOWER PLANAR SECTIONS BEING RADIALLY OUTWARDLY DIRECTED; (D) AND A CIRCULAR SCREEN HAVING A MARGIN ENTERING BETWEEN SAID UPPER CONFRONTING SECTIONS AND INITIALLY EMERGING FROM SAID LOWER CONFRONTING SECTIONS; (E) AND MEANS BETWEEN SAID FACING MEMBERS FOR SECURING SAID SCREEN BY ITS MARGIN UPON AXIAL ASSEMBLY OF SAID FACING MEMBERS.
References Cited (Backward Citations)
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US2136950A
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US2343037A
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US2753999A
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FR1262836A
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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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |