US3149940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust filter in series with parallel rows of gas filters
Assignee: Individual
•
Filing: 1961-07-10
•
Granted: 1964-09-22
•
Expires: 1981-07-10
Abstract
No abstract record available.
Inventors
- 👤 Wachter Karl-August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:48
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; A; A62; A62B; A62B19/00; B01D46/0002; B01D46/0004; B01D46/52; B01D46/521; B01D46/56; B01D46/58; B01D46/62; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0446; F; F24; F24F; F24F13/00; F24F13/28; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40084; B01D2259/45; B01D2259/4566; B01D2279/00; B01D2279/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A DUST AND GAS FILTER FOR A VEHICLE COMPRISING A HOUSING, DUST FILTERING MEANS MOUNTED LONGITUDINALLY SUBSTANTIALLY ENTIRELY ACROSS ONE PORTION OF SAID HOUSING AND HAVING ONE END OPEN TO THE ATMOSPHERE AND THE OTHER END CLOSED, A PLURALITY OF GAS FILTERING MEANS ARRANGED IN SEPARATE ROWS WITHIN SAID HOUSING CO-EXTENSIVE WITH AND ADJACENT SAID DUST FILTER MEANS IN A SECOND HOUSING PORTION, BAFFLE PARTITION MEANS BETWEEN AND COEXTENSIVE WITH SAID ROWS FOR DIRECTING AIR EMITTED FROM SUBSTANTIALLY THE ENTIRE SURFACE AREA OF SAID DUST FILTERING MEANS INTO AND THROUGH THE ENTIRE SURFACE AREA OF SAID GAS FILTERING MEANS, AND OUTLET PORT MEANS FOR REMOVING THE COMPLETELY FILTERED AIR FROM SAID HOUSING.
Claim 2
Dependent Claim
112 words
A DUST AND GAS FILTER FOR A VEHICLE COMPRISING A HOUSING, DUST FILTERING MEANS MOUNTED LONGITUDINALLY SUBSTANTIALLY ENTIRELY ACROSS ONE PORTION OF SAID HOUSING AND HAVING ONE END OPEN TO THE ATMOSPHERE AND THE OTHER END CLOSED, A PLURALITY OF GAS FILTERING MEANS ARRANGED IN SEPARATE ROWS WITHIN SAID HOUSING CO-EXTENSIVE WITH AND ADJACENT SAID DUST FILTER MEANS IN A SECOND HOUSING PORTION, BAFFLE PARTITION MEANS BETWEEN AND COEXTENSIVE WITH SAID ROWS FOR DIRECTING AIR EMITTED FROM SUBSTANTIALLY THE ENTIRE SURFACE AREA OF SAID DUST FILTERING MEANS INTO AND THROUGH THE ENTIRE SURFACE AREA OF SAID GAS FILTERING MEANS, AND OUTLET PORT MEANS FOR REMOVING THE COMPLETELY FILTERED AIR FROM SAID HOUSING.
References Cited (Backward Citations)
US1315163A
Cited
US1895618A
Cited
US1744119A
Cited
US1916907A
Cited
US2019186A
Cited
US2032221A
Cited
US2398045A
Cited
US2886124A
Cited
US2929503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |