US4052767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power driven brush drive control
Assignee: Panasonic Corp of North America
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Filing: 1975-11-07
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Granted: 1977-10-11
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Expires: 1995-11-07
Abstract
Abstract A vacuum cleaner structure having a motor driven suction unit and a motor driven rotary brush. A control is provided for selectively operating the driven brush independently of the operation of the suction unit. The control may comprise a switch mounted to a handle portion of the vacuum cleaner and may be biased to prevent operation of the driven brush upon release of the handle by the user.
Inventors
- 👤 Ival G. Dutcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:49
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/28; A47L9/2889; A47L9/2836; A47L9/2842; A47L9/2847; A47L9/2857
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
185 words
In a vacuum cleaner having a selectively operable motor driven suction unit, a dirt pickup means including a motor driven rotary brush for brushing the surface to be cleaned for facilitated dirt pickup therefrom by a pickup means, and a handle having a gripping portion to be gripped by a user in a gripping manner as required for moving the dirt pickup means along said surface, the improvement comprising control means carried by said handle at said gripping portion for selectively controlling the operation of the driven brush independently of the operation of the motor driven suction unit, said control means including an actuator means for bridging said gripping portion to preclude movement of the user's hand from either end of said actuator means to between said actuator means and said gripping portion, said actuator means being biased to prevent operation of the driven brush, the actuator means being arranged to be engaged by the hand of the user to cause operation of the driven brush whenever the user grips the handle gripping portion as required for moving the dirt pickup means along said surface.
Claim 2
Dependent Claim
185 words
In a vacuum cleaner having a selectively operable motor driven suction unit, a dirt pickup means including a motor driven rotary brush for brushing the surface to be cleaned for facilitated dirt pickup therefrom by a pickup means, and a handle having a gripping portion to be gripped by a user in a gripping manner as required for moving the dirt pickup means along said surface, the improvement comprising control means carried by said handle at said gripping portion for selectively controlling the operation of the driven brush independently of the operation of the motor driven suction unit, said control means including an actuator means for bridging said gripping portion to preclude movement of the user's hand from either end of said actuator means to between said actuator means and said gripping portion, said actuator means being biased to prevent operation of the driven brush, the actuator means being arranged to be engaged by the hand of the user to cause operation of the driven brush whenever the user grips the handle gripping portion as required for moving the dirt pickup means along said surface.
Claim 3
Dependent Claim
19 words
The vacuum cleaner structure of claim 1 wherein said control means includes an electric switch mounted within said handle.
Claim 4
Dependent Claim
30 words
The vacuum cleaner structure of claim 1 wherein switch means is provided adjacent the suction unit for controlling the energization of the suction unit independently of said motor driven brush.
Claim 5
Dependent Claim
24 words
The vacuum cleaner structure of claim 1 wherein said handle gripping portion is arcuate and said actuator means comprises an arcuate leaf spring element.
Claim 6
Dependent Claim
26 words
The vacuum cleaner structure of claim 1 wherein said gripping portion is arcuate and said actuator means bridges a concave portion of said arcuate gripping portion.
Claim 7
Dependent Claim
25 words
The vacuum cleaner structure of claim 1 wherein said gripping portion is provided with a concave portion and said actuator means bridges said concave portion.
Claim 8
Dependent Claim
35 words
The vacuum cleaner structure of claim 1 wherein said gripping portion is provided with a concave portion and said actuator means bridges said concave portion, said concave portion comprising the underside of said gripping portion.
Claim 9
Dependent Claim
32 words
The vacuum cleaner structure of claim 1 wherein said control means includes a switch at one end of said actuator means for operation as an incident of movement of the actuator means.
Claim 10
Dependent Claim
34 words
The vacuum cleaner structure of claim 1 wherein said gripping portion is provided with a concave portion and said actuator means bridges said concave portion, said actuator means extending convexly across said concave portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |