US3177635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial vacuum cleaners
Assignee: Electrolux Corp
•
Filing: 1960-06-22
•
Granted: 1965-04-13
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Expires: 1980-06-22
Abstract
No abstract record available.
Inventors
- 👤 Allen P Cawl
- 👤 Robert C Lampe
- 👤 Gustaf E Lofgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:09
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/102; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/365; A47L9/14; A47L9/1427; A47L9/16; A47L9/1608; A47L9/1658; A47L9/1666; A47L9/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A VACUUM CLEANER,A BASE MEMBER, AN OPEN-TOP CONTAINER FORMING A DIRT RECEIVING CHAMBER REMOVABLY SUPPORTED BY SAID BASE MEMBER, WALLS SECURED TO SAID BASE MEMBER AND DEFINING A DUST BAG ENCLOSURE OPEN AT THE TOP, HINGED COVER MEANS FOR CLOSING THE TOPS OF SAID CONTAINER AND SAID ENCLOSURE, CONDUIT MEANS FORMING AN INLET FOR INTRODUCING DIRT-LADENED AIR INTO SAID CONTAINER, A PLURALITY OF DUST BAGS REMOVABLY SUPPORTED IN SAID ENCLOSURE, AN EQUAL PLURALITY OF CONDUITS SUPPORTED BY SAID COVER MEANS AND EACH EXTENDING FROM SAID CONTAINER TO A SEPARATE ONE OF SAID DUST BAGS, AND MEANS FOR EXHAUSTING AIR FROM SAID ENCLOSURE TO INDUCE FLOW OF AIR FROM SAID INLET INTO SAID CONTAINER AND FROM SAID CONTAINER THROUGH SAID CONDUITS IN PARALLEL TO THE RESPECTIVE DUST BAGS.
Claim 2
Dependent Claim
128 words
IN A VACUUM CLEANER,A BASE MEMBER, AN OPEN-TOP CONTAINER FORMING A DIRT RECEIVING CHAMBER REMOVABLY SUPPORTED BY SAID BASE MEMBER, WALLS SECURED TO SAID BASE MEMBER AND DEFINING A DUST BAG ENCLOSURE OPEN AT THE TOP, HINGED COVER MEANS FOR CLOSING THE TOPS OF SAID CONTAINER AND SAID ENCLOSURE, CONDUIT MEANS FORMING AN INLET FOR INTRODUCING DIRT-LADENED AIR INTO SAID CONTAINER, A PLURALITY OF DUST BAGS REMOVABLY SUPPORTED IN SAID ENCLOSURE, AN EQUAL PLURALITY OF CONDUITS SUPPORTED BY SAID COVER MEANS AND EACH EXTENDING FROM SAID CONTAINER TO A SEPARATE ONE OF SAID DUST BAGS, AND MEANS FOR EXHAUSTING AIR FROM SAID ENCLOSURE TO INDUCE FLOW OF AIR FROM SAID INLET INTO SAID CONTAINER AND FROM SAID CONTAINER THROUGH SAID CONDUITS IN PARALLEL TO THE RESPECTIVE DUST BAGS.
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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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |