Patent US3420040A successfully refreshed from Google Patents.
US3420040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust collector
Assignee: Joy Manufacturing Co
•
Filing: 1965-06-22
•
Granted: 1969-01-07
•
Expires: 1985-06-22
Abstract
No abstract record available.
Inventors
- 👤 Robert E Neely
- 👤 Alex D Limonczenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:57
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/02; B04C5/06; B04C5/12; B04C5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
226 words
IN A CYCLONE TYPE DUST COLLECTOR HAVING AN ELONGATED SEPARATING TUBE AXIALLY DISPOSED ABOUT AN ELONGATED OUTLET TUBE WITH ONE END OF SAID OUTLET TUBE TERMINATING INTERMEDIATE THE LENGTH OF SAID SEPARATING TUBE THE IMPROVEMENT COMPRISING, A FIRST OPEN ENDED TAPERED SLEEVE MOUNTED AT AND CONCENTRICALLY OF SAID ONE END, SAID FIRST SLEEVE HAVING ITS SMALLER END SPACED RADIALLY INWARDLY FROM SAID ONE END OF SAID OUTLET TUBE IN A PLANE TO DEFINE THEREWITH AN OPENING OF ANNULAR SHAPE SUBSTANTIALLY IN A PLANE TRANSVERSE TO THE AXIS OF SAID OUTLET TUBE AT SAID ONE END AND HAVING ITS LARGER END REMOTE FROM SAID OUTLET TUBE, A SECOND OPEN ENDED TAPERED SLEEVE MOUNTED AT AND CONCENTRICALLY OF SAID LARGER END OF SAID FIRST SLEEVE, SAID SECOND SLEEVE HAVING ITS SMALLER END SPACED RADIALLY INWARDLY FROM SAID LARGER END IN A PLANE TO DEFINE THEREWITH AN OPENING OF ANNULAR SHAPE SUBSTANTIALLY IN A PLANE TRANSVERSE TO THE AXIS OF SAID OUTLET TUBE AT SAID LARGER END AND HAVING ITS OWN LARGER END MORE REMOTE FROM SAID OUTLET TUBE, AND SAID SEPARATING TUBE HAVING A SUBSTANTIALLY CONSTANT INTERNAL CROSS SECTIONAL AREA EXTENDING AT LEAST FROM A TRANSVERSE PLANE CONTAINING SAID ONE END TO A TRANSVERSE PLANE SPACED AXIALLY FROM SAID LARGER END OF SAID SECOND SLEEVE IN THE SAME DIRECTION SAID LARGER ENDS ARE SPACED FROM SAID ONE END.
Claim 2
Dependent Claim
226 words
IN A CYCLONE TYPE DUST COLLECTOR HAVING AN ELONGATED SEPARATING TUBE AXIALLY DISPOSED ABOUT AN ELONGATED OUTLET TUBE WITH ONE END OF SAID OUTLET TUBE TERMINATING INTERMEDIATE THE LENGTH OF SAID SEPARATING TUBE THE IMPROVEMENT COMPRISING, A FIRST OPEN ENDED TAPERED SLEEVE MOUNTED AT AND CONCENTRICALLY OF SAID ONE END, SAID FIRST SLEEVE HAVING ITS SMALLER END SPACED RADIALLY INWARDLY FROM SAID ONE END OF SAID OUTLET TUBE IN A PLANE TO DEFINE THEREWITH AN OPENING OF ANNULAR SHAPE SUBSTANTIALLY IN A PLANE TRANSVERSE TO THE AXIS OF SAID OUTLET TUBE AT SAID ONE END AND HAVING ITS LARGER END REMOTE FROM SAID OUTLET TUBE, A SECOND OPEN ENDED TAPERED SLEEVE MOUNTED AT AND CONCENTRICALLY OF SAID LARGER END OF SAID FIRST SLEEVE, SAID SECOND SLEEVE HAVING ITS SMALLER END SPACED RADIALLY INWARDLY FROM SAID LARGER END IN A PLANE TO DEFINE THEREWITH AN OPENING OF ANNULAR SHAPE SUBSTANTIALLY IN A PLANE TRANSVERSE TO THE AXIS OF SAID OUTLET TUBE AT SAID LARGER END AND HAVING ITS OWN LARGER END MORE REMOTE FROM SAID OUTLET TUBE, AND SAID SEPARATING TUBE HAVING A SUBSTANTIALLY CONSTANT INTERNAL CROSS SECTIONAL AREA EXTENDING AT LEAST FROM A TRANSVERSE PLANE CONTAINING SAID ONE END TO A TRANSVERSE PLANE SPACED AXIALLY FROM SAID LARGER END OF SAID SECOND SLEEVE IN THE SAME DIRECTION SAID LARGER ENDS ARE SPACED FROM SAID ONE END.
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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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |