Patent US4492448A successfully refreshed from Google Patents.
Patent US3247970A successfully refreshed from Google Patents.
US3247970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for comminuting and straining sewage and the like
Assignee: W HUBERT AND CO MACHINEFABRIEK NV
•
Filing: 1962-09-07
•
Granted: 1966-04-26
•
Expires: 1982-09-07
Abstract
No abstract record available.
Inventors
- 👤 Jellesma Anne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:28
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/0084; B02C18/0092; B01; B01D; B01D29/00; B01D29/11; B01D29/31; B01D29/33; B01D29/62; B01D29/64; B01D29/6469; B01D29/6476; B01D29/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
IN A SEWAGE HANDLING SYSTEM THE COMBINATION OF A STATIONARY HOLLOW CYLINDRICAL DRUM, SAID DRUM HAVING A PLURALITY OF SPACED CIRCUMFERENTIAL SLOTS, AT LEAST ONE ELONGATED COMB MEMBER EXTERNALLY ADJACENT THE DRUM AND HAVING A PLURALITY OF RECESSES IN REGISTRY WITH THE SLOTS OF THE DRUM, A SCREW MEMBER CONSTITUTING A CONVEYOR COAXIALLY SUPPORTED WITHIN SAID DRUM FOR ROTATION, SAID SCREW MEMBER INCLUDING A HELICAL ELEMENT HAVING AN OUTER PERIPHERY ADJACENT THE SLOTS IN THE DRUM, A PLURALITY OF CUTTERS ON THE HELICAL ELEMENT AT THE PERIPHERY THEREOF EXTENDING THROUGH THE SLOTS OF THE DRUM AND EXTERNALLY THEREOF SUCH THAT UPON ROTATION OF THE SCREW MEMBER THE CUTTERS TRANVERSE THE SLOTS OF THE DRUM AND PASS THROUGH SAID RECESSES IN THE MEMBER ADJACENT THE DRUM, SAID SCREW MEMBER INCLUDING A SHAFT SUPPORTING THE HELICAL ELEMENT AND PROJECTING AXIALLY FROM THE DRUM, AND MEANS ENGAGING THE PROJECTING SHAFT FOR DRIVING THE
Claim 2
Dependent Claim
150 words
IN A SEWAGE HANDLING SYSTEM THE COMBINATION OF A STATIONARY HOLLOW CYLINDRICAL DRUM, SAID DRUM HAVING A PLURALITY OF SPACED CIRCUMFERENTIAL SLOTS, AT LEAST ONE ELONGATED COMB MEMBER EXTERNALLY ADJACENT THE DRUM AND HAVING A PLURALITY OF RECESSES IN REGISTRY WITH THE SLOTS OF THE DRUM, A SCREW MEMBER CONSTITUTING A CONVEYOR COAXIALLY SUPPORTED WITHIN SAID DRUM FOR ROTATION, SAID SCREW MEMBER INCLUDING A HELICAL ELEMENT HAVING AN OUTER PERIPHERY ADJACENT THE SLOTS IN THE DRUM, A PLURALITY OF CUTTERS ON THE HELICAL ELEMENT AT THE PERIPHERY THEREOF EXTENDING THROUGH THE SLOTS OF THE DRUM AND EXTERNALLY THEREOF SUCH THAT UPON ROTATION OF THE SCREW MEMBER THE CUTTERS TRANVERSE THE SLOTS OF THE DRUM AND PASS THROUGH SAID RECESSES IN THE MEMBER ADJACENT THE DRUM, SAID SCREW MEMBER INCLUDING A SHAFT SUPPORTING THE HELICAL ELEMENT AND PROJECTING AXIALLY FROM THE DRUM, AND MEANS ENGAGING THE PROJECTING SHAFT FOR DRIVING THE
References Cited (Backward Citations)
US718003A
Cited
US2195815A
Cited
US1960303A
Cited
US2295633A
Cited
US2389306A
Cited
US2717742A
Cited
US2921683A
Cited
US2853242A
Cited
US3091338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |