Sequential actuation skirt and brush floor scrubber
First Claim
Patent Images
1. A floor cleaning machine comprising:
- a vehicle frame including floor-engagement wheels;
floor scrubber brushes;
scrubber brush motors operably engaged with said brushes;
a brush frame supporting said brushes and brush motors;
said brush frame being pivotally mounted on a horizontal pivot connection to said vehicle frame, allowing vertical movement of said brush frame, brushes and brush motors;
a floor-engagement wheel on said brush frame spaced from said pivot connection;
a power lifter between said vehicle frame and said brush frame;
floor engagement skirts, skirt assemblies mounting said skirts and being pivotally mounted to said vehicle frame allowing vertical movement of said skirt assemblies and said skirts; and
engagement means between said brush frame and said skirt assemblies for causing said brush frame to lift said skirt assemblies with actuation of said power lifter.
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Accused Products
Abstract
A cleaning machine employing a vertically shiftable brush and motor assembly, a separate vertically shiftable skirt/splash guard assembly, and a cooperative arrangement between the brush and skirt assemblies causing controlled elevation of the skirt with elevation of the brush. Both the skirt and the brush remain in optimum engagement with a floor surface during operation, but the skirt is elevated cooperatively with elevation of the brush using a lost motion engagement.
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Citations
15 Claims
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1. A floor cleaning machine comprising:
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a vehicle frame including floor-engagement wheels;
floor scrubber brushes;
scrubber brush motors operably engaged with said brushes;
a brush frame supporting said brushes and brush motors;
said brush frame being pivotally mounted on a horizontal pivot connection to said vehicle frame, allowing vertical movement of said brush frame, brushes and brush motors;
a floor-engagement wheel on said brush frame spaced from said pivot connection;
a power lifter between said vehicle frame and said brush frame;
floor engagement skirts, skirt assemblies mounting said skirts and being pivotally mounted to said vehicle frame allowing vertical movement of said skirt assemblies and said skirts; and
engagement means between said brush frame and said skirt assemblies for causing said brush frame to lift said skirt assemblies with actuation of said power lifter. - View Dependent Claims (2, 3, 4)
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5. A floor cleaning machine comprising:
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a vehicle frame including floor-engagement wheels;
at least one floor scrubber brush;
a scrubber brush motor for each said at least one scrubber brush, operably engaged with said brush;
a brush frame supporting said brush and brush motor;
said brush frame being pivotally mounted on a horizontal pivot connection to said vehicle frame, allowing vertical movement of said brush frame, brush and brush motor;
a power lifter between said vehicle frame and said brush frame;
floor engagement skirts, and skirt assemblies mounting said skirts and being pivotally mounted to said vehicle frame allowing vertical movement of said skirt assemblies and skirts; and
engagement elements between said brush frame and said skirt assemblies causing said brush frame to lift said skirt assemblies with lifting actuation of said power lifter. - View Dependent Claims (6, 7)
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8. A floor cleaning machine comprising:
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a vehicle frame with wheels;
a brush frame and motor driven brushes on said brush frame;
said brush frame being vertically movably mounted relative to said vehicle frame, and an actuator for vertically elevating said brush frame;
a floor engagement skirt for retaining cleaning fluid beneath the machine, and a skirt assembly, said skirt assembly and skirt being vertically movably mounted relative to said vehicle frame; and
lift actuator mechanism for lifting said brush frame, skirt assembly and skirt;
wherein said actuator is translationally interconnected to said brush frame such that said brush frame is allowed to move vertically relative to said actuator when said actuator is in a lowest position, thereby allowing said brush frame and brushes to follow an uneven floor surface without interference from said actuator. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification