Patent EP0173394A2 successfully refreshed from Google Patents.
EP0173394A2
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EP
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Floor cleaning machine
Assignee: Unilever PLC
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Filing: 1985-08-16
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Granted: —
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Expires: 2005-08-16
Abstract
Abstract 7 The invention pertains to a floor cleaning machine comprising an electrical means for controlling the operation of the brush head lever motor to maintain the brush pressure at an operator-set value. An improved brush pressure regulating system which is operator-adjustable, is provided.
Inventors
- 👤 Hermann Meili
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 19:11
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4038; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/161; A47L11/29; A47L11/30; A47L11/302; A47L11/305; A47L11/4002; A47L11/4011
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
A floor cleaning machine comprising a motor-driven movable body (1) carrying a scrubber assembly (3) which comprises a brush head (12) housing one or more rotatable brushes (13), a motor (14) for driving the brushes (13), a lever (15) capable of lifting and lowering the brush head (12), and a motor (26) for engaging the lever (15) between a lifted and a lowered position, characterized in that the scrubber assembly (3) comprises a control means (27) for electrically controlling the operation of the lever motor (26) to maintain the brush pressure at an operator-set value.
Claim 2
Dependent Claim
95 words
A floor cleaning machine comprising a motor-driven movable body (1) carrying a scrubber assembly (3) which comprises a brush head (12) housing one or more rotatable brushes (13), a motor (14) for driving the brushes (13), a lever (15) capable of lifting and lowering the brush head (12), and a motor (26) for engaging the lever (15) between a lifted and a lowered position, characterized in that the scrubber assembly (3) comprises a control means (27) for electrically controlling the operation of the lever motor (26) to maintain the brush pressure at an operator-set value.
Claim 3
Dependent Claim
19 words
A floor cleaning machine according to claim 1 which comprises an extension spring (21) counter-acting the lever motor (26).
Claim 4
Dependent Claim
18 words
A floor cleaning machine according to claim 2 in which the lever motor (26) is a stepper motor.
Claim 5
Dependent Claim
31 words
A floor cleaning machine according to any one of the preceding claims wherein the control means (27) comprises an electronic device which controls the lever motor by way e width modulation.
Claim 6
Dependent Claim
48 words
A floor cleaning machine according to any one of the preceding claims wherein a sensoring device (28) is incorporated for measuring the brush pressure, the control means (27) being capable of monitoring the sensoring device and controlling the operation of the lever motor (26) on the basis thereof.
Claim 7
Dependent Claim
28 words
A floor cleaning machine according to claim 5 wherein the brush pressure sensoring device (28) consists of an ammeter capable of measuring the amperage of the lever motor.
Claim 8
Dependent Claim
42 words
A floor cleaning machine according to claim 5 wherein the brush pressure sensoring device (28) comprises a deformation-sensitive component. Such component is suitably attached to the surface of or incorporated in a stress-deformable portion (19) of the lever (15) or spring (21).
Claim 9
Dependent Claim
16 words
A floor cleaning machine according to claim 7 wherein the deformation-sensitive component comprises a Hall element.
Claim 10
Dependent Claim
16 words
A floor cleaning machine according to claim 7 wherein the deformation-sensitive component comprises a strain gage.
References Cited (Backward Citations)
No citation records indexed.
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