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US3588944A Expired / Lapsed US ⏱️ 0.0 years remaining

Canister vacuum cleaner

Assignee: Singer Co
•
Filing: 1970-01-08
•
Granted: 1971-06-29
•
Expires: 1990-01-08
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Abstract

Abstract A VACUUM CLEANER OF THE CANISTER VARIETY FOR DOMESTIC USE HAVING LOWER AND UPPER HOUSINGS SECURED TOGETHER BY U-SHAPED CLIPS, AND AN INTERMEDIATE HOUSING. BETWEEN THE UPPER AND INTERMEDIATE HOUSINGS IS DISPOSED A HOSE STORAGE COMPARTMENT WITHIN WHICH THE HOSE IS RETRACTED AND STORED BY A HOSE REEL MECHANISM UPON DEPRESSION OF A FOOT PEDAL. A DUST BAG, LOCATED WITHIN THE VACUUM CHAMBER BETWEEN THE INTERMEDIATE AND LOWER HOUSING, IS ATTACHED TO A BRACKET ON AN ACCESS DOOR LOCATED AT THE BOTTOM OF THE LOWER HOUSING. TO CHANGE THE FILTER BAG, AND A PAIR OF SECONDARY FILTERS WHICH ARE ALSO REMOVABLY MOUNTED ON THE DOOR, THE CLEANER IS SET ON END AND THE ACCESS DOOR OPENED TO A TABLE-LIKE POSITION. A FRONT PANEL, MOUNTED ON THE INTERMEDIATE HOUSING AND SECURED TO THE LOWER HOUSING, OPERABLY MOUNTS THE HOSE RETRACTION PEDAL, THE POWER SWITCH PEDAL, THE SUCTION/BLOWER LEVERS AND A FILTER BAG CHANGE INDICATOR. ALSO DISCLOSED IS A SELECTIVELY OPERABLE LEVER CONTROLLED SLIDE VALVE FOR CONVERTING THE CLEANER FROM SUCTION TO BLOWER OPERATION AND VICE VERSA.

Inventors

  • 👤 Charles T Fromknecht
  • 👤 Martin E Harbeck

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 17:02
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/362; Y; Y10; Y10S; Y10S55/00; Y10S55/03

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1974-06-28 1974-12-28 1975-06-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-06-28 1978-12-28 1979-06-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-06-28 1982-12-28 1983-06-29 $7700.00 Window Closed / Lapsed

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