US3105043A
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Assignee: Improved Machinery Inc
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Filing: 1960-05-26
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Granted: 1963-09-24
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Expires: 1980-05-26
Abstract
No abstract record available.
Inventors
- 👤 John P Rich
- 👤 Luthi Oscar
- 👤 Saunders Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:55
CPC Classifications
B; B21; B21D; B21D47/00; B01; B01D; B01D33/00; B01D33/06; B01D33/067; B01D33/073; B01D33/44; B01D33/46; B01D33/466
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
IN A ROTARY FILTER INCLUDING A SELF-SUPPORTING CYLINDRICAL DRUM HAVING A FORAMINOUS SURFACE DISPOSED FOR ROTATION ABOUT AN AXIS IN A TANK, SAID DRUM COMPRISING A CYLINDRICAL TUBULAR GRID STRUCTURE FORMED OF ANNULAR PLANAR STRIP MEANS EXTENDING AROUND THE CIRCUMFERENCE OF THE CYLINDRICAL GRID WITH ITS WIDTHWISE DIMENSION DISPOSED RADIALLY THEREOF, AND WAVED STRIP MEANS EXTENDING AROUND THE CIRCUMFERENCE OF THE CYLINDRICAL GRID WITH ITS WIDTHWISE DIMENSION DISPOSED RADIALLY THEREOF, SAID WAVED STRIP MEANS CONSISTING OF ALTERNATING GENERALLY DIAGONAL SEGMENTS WITH CONNECTING SEGMENTS THEREBETWEEN, WITH SAID CONNECTING SEGMENTS BEING POSITIONED ON OPPOSITE SIDES OF THE CENTRAL PLANE OF SAID WAVED STRIP MEANS AND SAID DIAGONAL SEGMENTS CROSSING SAID CENTRAL PLANE, SAID PLANAR STRIP MEANS AND SAID WAVED STRIP MEANS BEING ARRANGED ADJACENT TO EACH OTHER AND ALTERNATING WITH RESPECT TO EACH OTHER TO FORM SAID GRID STRUCTURE, AND CONNECTING SEGMENTS OF SAID WAVED STRIP MEANS BEING FIXED DIRECTLY TO ADJACENT PLANAR STRIP MEANS PROVIDING A GRID HAVING GENERALLY RADIAL PASSAGES WITH WALLS DEFINED BY BOTH OF SAID STRIP MEANS.
Claim 2
Dependent Claim
169 words
IN A ROTARY FILTER INCLUDING A SELF-SUPPORTING CYLINDRICAL DRUM HAVING A FORAMINOUS SURFACE DISPOSED FOR ROTATION ABOUT AN AXIS IN A TANK, SAID DRUM COMPRISING A CYLINDRICAL TUBULAR GRID STRUCTURE FORMED OF ANNULAR PLANAR STRIP MEANS EXTENDING AROUND THE CIRCUMFERENCE OF THE CYLINDRICAL GRID WITH ITS WIDTHWISE DIMENSION DISPOSED RADIALLY THEREOF, AND WAVED STRIP MEANS EXTENDING AROUND THE CIRCUMFERENCE OF THE CYLINDRICAL GRID WITH ITS WIDTHWISE DIMENSION DISPOSED RADIALLY THEREOF, SAID WAVED STRIP MEANS CONSISTING OF ALTERNATING GENERALLY DIAGONAL SEGMENTS WITH CONNECTING SEGMENTS THEREBETWEEN, WITH SAID CONNECTING SEGMENTS BEING POSITIONED ON OPPOSITE SIDES OF THE CENTRAL PLANE OF SAID WAVED STRIP MEANS AND SAID DIAGONAL SEGMENTS CROSSING SAID CENTRAL PLANE, SAID PLANAR STRIP MEANS AND SAID WAVED STRIP MEANS BEING ARRANGED ADJACENT TO EACH OTHER AND ALTERNATING WITH RESPECT TO EACH OTHER TO FORM SAID GRID STRUCTURE, AND CONNECTING SEGMENTS OF SAID WAVED STRIP MEANS BEING FIXED DIRECTLY TO ADJACENT PLANAR STRIP MEANS PROVIDING A GRID HAVING GENERALLY RADIAL PASSAGES WITH WALLS DEFINED BY BOTH OF SAID STRIP MEANS.
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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |