US3266078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning apparatus protection mechanism
Assignee: Electrolux Corp
•
Filing: 1964-04-03
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Granted: 1966-08-16
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Expires: 1984-04-03
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Brown
- 👤 John J Kowalewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:55
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0405; A47L9/0411; A47L11/00; A47L11/02; A47L11/20; A47L11/40; A47L11/4036; A47L11/4041; A47L11/4044; A47L11/4063; A47L11/4069; A47L11/4094; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30; A47L9/0427; A47L9/0444; A47L9/28; A47L9/2836; A47L9/2847; A47L9/2889; F; F16; F16H; F16H7/00; F16H7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A SURFACE CLEANING ELEMENT WHEREIN A SURFACE CLEANING BRUSH IS COUPLED FOR ROTATION WITH A DRIVEN TOOTHED GEAR WHICH IS ROTATED BY AN ENDLESS TOOTHED BELT WHICH IS, IN TURN, ROTATED BY AN ELECTRIC MOTOR-DRIVEN TOOTHED DRIVING GEAR, FIRST MEANS FOR PREVENTING THE TEETH OF THE ENDLESS BELT FROM GETTING OUT OF ENGAGEMENT WITH THE TEETH OF THE DRIVING GEAR AND PREVENTING RELATIVE CIRCUMFERRENTIAL DISENGAGEMENT THEREBETWEEN IN THE EVENT THAT THE CLEANING BRUSH BECOMES OVERLOAD IN ORDER TO POSITIVELY OVERLOAD THE DRIVING GEAR AND ITS MOTOR, WHEREBY THE CURRENT INPUT TO SAID MOTOR IS INCREASED AND SECOND MEANS FOR TURNING OFF THE MOTOR IN RESPONSE TO THE OVERLOAD CURRENT INPUT WHEREBY BREAKAGE OF THE BELT AND DAMAGE TO THE MOTOR ARE PREVENTED.
Claim 2
Dependent Claim
123 words
IN A SURFACE CLEANING ELEMENT WHEREIN A SURFACE CLEANING BRUSH IS COUPLED FOR ROTATION WITH A DRIVEN TOOTHED GEAR WHICH IS ROTATED BY AN ENDLESS TOOTHED BELT WHICH IS, IN TURN, ROTATED BY AN ELECTRIC MOTOR-DRIVEN TOOTHED DRIVING GEAR, FIRST MEANS FOR PREVENTING THE TEETH OF THE ENDLESS BELT FROM GETTING OUT OF ENGAGEMENT WITH THE TEETH OF THE DRIVING GEAR AND PREVENTING RELATIVE CIRCUMFERRENTIAL DISENGAGEMENT THEREBETWEEN IN THE EVENT THAT THE CLEANING BRUSH BECOMES OVERLOAD IN ORDER TO POSITIVELY OVERLOAD THE DRIVING GEAR AND ITS MOTOR, WHEREBY THE CURRENT INPUT TO SAID MOTOR IS INCREASED AND SECOND MEANS FOR TURNING OFF THE MOTOR IN RESPONSE TO THE OVERLOAD CURRENT INPUT WHEREBY BREAKAGE OF THE BELT AND DAMAGE TO THE MOTOR ARE PREVENTED.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |