Patent US3306879A successfully refreshed from Google Patents.
Patent US3279686A successfully refreshed from Google Patents.
US3279686A
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Assignee: CHAM A G MASCHF
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Filing: 1963-02-27
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Granted: 1966-10-18
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Expires: 1983-02-27
Abstract
No abstract record available.
Inventors
- 👤 Hubmann Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:59
CPC Classifications
B; B04; B04B; B04B7/00; B04B7/08; B04B7/12; B04B7/14; B01; B01D; B01D33/00; B01D33/06; B01D33/073; B01D33/35; B01D33/37; B01D33/39; B01D33/44; B01D33/52; B01D33/56; B01D33/70; B01D33/74; B01D33/742; B04B1/00; B04B1/04; B04B1/08; B01D2201/00; B01D2201/02; B01D2201/28; B01D2201/282; B01D2201/287
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A SELF-CLEANING FILTERING CENTRIFUGE, INCLUDING: A ROTATABLE DRUM HAVING A LATERAL WALL; A COVER FOR SAID DRUM, HAVING AN INLET FOR THE FLUID TO BE FILTERED AND AN OUTLET FOR THE FILTRATE; A PLURALITY OF SUPPORTS, EACH DEFINING LIQUID IMPERVIOUS UPPER AND LOWER UPWARDLY CONVERGING CONICAL SURFACES AND AN AXIS, SAID SUPPORTS SUPERPOSED IN VERTICAL, AXIALLY SPACED RELATIONSHIP WITHIN THE DRUM FOR ROTATION THEREWITH, WHEREIN THERE EXISTS BETWEEN SUCCESSIVE CONCAVE SURFACES A SPACE THAT IS OPEN TO THE LATERAL WALL OF THE DRUM; A CONICAL FILTER MEANS ASSOCIATED WITH EACH OF SAID SUPPORTS; MEANS FORMING A PART OF EACH OF SAID SUPPORTS FOR SUPPORTING THE ASSOCIATED FILTER MEANS IN SPACED RELATIONSHIP TO THE UPPER CONICAL SURFACE OF THE SUPPORT AND
Claim 2
Dependent Claim
120 words
A SELF-CLEANING FILTERING CENTRIFUGE, INCLUDING: A ROTATABLE DRUM HAVING A LATERAL WALL; A COVER FOR SAID DRUM, HAVING AN INLET FOR THE FLUID TO BE FILTERED AND AN OUTLET FOR THE FILTRATE; A PLURALITY OF SUPPORTS, EACH DEFINING LIQUID IMPERVIOUS UPPER AND LOWER UPWARDLY CONVERGING CONICAL SURFACES AND AN AXIS, SAID SUPPORTS SUPERPOSED IN VERTICAL, AXIALLY SPACED RELATIONSHIP WITHIN THE DRUM FOR ROTATION THEREWITH, WHEREIN THERE EXISTS BETWEEN SUCCESSIVE CONCAVE SURFACES A SPACE THAT IS OPEN TO THE LATERAL WALL OF THE DRUM; A CONICAL FILTER MEANS ASSOCIATED WITH EACH OF SAID SUPPORTS; MEANS FORMING A PART OF EACH OF SAID SUPPORTS FOR SUPPORTING THE ASSOCIATED FILTER MEANS IN SPACED RELATIONSHIP TO THE UPPER CONICAL SURFACE OF THE SUPPORT AND
References Cited (Backward Citations)
US1269067A
Cited
US1721230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |