US3365864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner
Assignee: Toshiba TEC Corp
•
Filing: 1964-02-24
•
Granted: 1968-01-30
•
Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Iizima Yoshitomo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:30
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1409; A47L9/12; A47L9/125; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A VACUUM CLEANER COMPRISING A HOUSING HAVING AN OPEN END AND A DISCHARGE PORT IN THE OTHER END AND A FRONT COVER; AN INTAKE PORT IN SAID FRONT COVER; A DUST FILTERING DEVICE POSITIONED IN THE HOUSING; A FAN FOR INTRODUCING SUCTION AIR CONTAINING DUST INTO SAID DEVICE POSITIONED INTERMEDIATE THE FILTERING DEVICE AND THE DISCHARGE PORT; AND AN ELECTRIC MOTOR DRIVING SAID FAN; SAID DUST FILTERING DEVICE CONSISTING ESSENTIALLY OF THREE INDIVIDUAL FILTER RECEPTACLES IN NESTED POSITION, EACH HAVING AN INLET OPENING FACING SAID INTAKE PORT; THE INNER RECEPTACLE BEING OF RELATIVELY LARGE MESH AND PROVIDED WITH A PERIMETRICAL FLANGE OF THE INLET THEREOF CLAMPED BETWEEN SAID FRONT COVER AND THE HOUSING AT THE OPEN END THEREOF; THE INTERMEDIATE BAG BEING OF AN AIR-PERMEABLE SYNTHETIC ORGANIC RESIN FOAM FINE FILTER; AND THE OUTER BAG BEING OF FINE MESH; AND PERIMETRICAL PACKING MEANS PROVIDED ABOUT THE INLET OF THE OUTER RECEPTACLE INTERPOSED BETWEEN SAID FLANGE AND THE OPEN END OF THE HOUSING AND BEING CLAMPED BETWEEN THE COVER AND THE OPEN END OF THE HOUSING HOLDING ALL THREE RECEPTACLES IN CO-AXIAL NESTED RELATION.
Claim 2
Dependent Claim
183 words
A VACUUM CLEANER COMPRISING A HOUSING HAVING AN OPEN END AND A DISCHARGE PORT IN THE OTHER END AND A FRONT COVER; AN INTAKE PORT IN SAID FRONT COVER; A DUST FILTERING DEVICE POSITIONED IN THE HOUSING; A FAN FOR INTRODUCING SUCTION AIR CONTAINING DUST INTO SAID DEVICE POSITIONED INTERMEDIATE THE FILTERING DEVICE AND THE DISCHARGE PORT; AND AN ELECTRIC MOTOR DRIVING SAID FAN; SAID DUST FILTERING DEVICE CONSISTING ESSENTIALLY OF THREE INDIVIDUAL FILTER RECEPTACLES IN NESTED POSITION, EACH HAVING AN INLET OPENING FACING SAID INTAKE PORT; THE INNER RECEPTACLE BEING OF RELATIVELY LARGE MESH AND PROVIDED WITH A PERIMETRICAL FLANGE OF THE INLET THEREOF CLAMPED BETWEEN SAID FRONT COVER AND THE HOUSING AT THE OPEN END THEREOF; THE INTERMEDIATE BAG BEING OF AN AIR-PERMEABLE SYNTHETIC ORGANIC RESIN FOAM FINE FILTER; AND THE OUTER BAG BEING OF FINE MESH; AND PERIMETRICAL PACKING MEANS PROVIDED ABOUT THE INLET OF THE OUTER RECEPTACLE INTERPOSED BETWEEN SAID FLANGE AND THE OPEN END OF THE HOUSING AND BEING CLAMPED BETWEEN THE COVER AND THE OPEN END OF THE HOUSING HOLDING ALL THREE RECEPTACLES IN CO-AXIAL NESTED RELATION.
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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) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |