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1. 发明申请

WO2023002189A1 HAND GUIDED FLOOR TREATMENT MACHINE 审中-公开
公开(公告)号：WO2023002189A1
公开(公告)日：2023-01-26
申请号：PCT/GB2022/051889
申请日：2022-07-21
申请人： NUMATIC INTERNATIONAL LIMITED
发明人： FOOKS, Matthew , BRIGHT, Matthew , WARREY, Lewis , BUKOWSKI, Piotr
IPC分类号： A47L11/16 , A47L11/283 , A47L11/293
摘要： The present invention relates to the field of floor treatment machines for scrubbing, polishing, sanding or burnishing floors, and in particular machines in which one or more driven rotatable work heads (such as scrubbing brushes) are provided for agitating the floor surface. The disclosure provides a hand guided, walk-behind floor treatment machine comprising: a base portion provided with and supported by at least one rotatable work head for treating the floor, drive means for rotating the work head with respect to the base portion, guide wheel means for supporting the handle portion and/or base portion on the floor, the guide wheel means having a substantially transverse axis of rotation with respect to the base portion so as to permit machine travel over the floor in a working direction, a handle portion for steering or guiding the machine in the working direction of travel, a lower region of which handle portion is provided with an articulated joint arrangement which permits pivoting of the handle portion with respect to the base portion during machine operation, the handle portion lower region being connected to the guide wheel means so as to permit yaw steering by manipulation of an upper region of the handle, wherein a motor traction drive is provided for driving the guide wheel means so as to permit self-propulsion of the machine over the floor and a motor controller for controlling the operation of the motor traction drive. The motor controller permits the traction drive to be activated or de-activated. The motor controller may be configured to permit motor traction drive control independent of the operation of the work head drive means. The motor controller is configured to provide traction drive speed control. The motor controller is adapted to permit continuously variable speed control, and/or stepped incremental speed control, and/or the adoption of one of a plurality of discrete single speed settings. The motor controller may be configured to provide a user-selectable reverse drive mode of the guide wheel means so that the machine may be propelled backwards.

2. 发明申请

WO2022129900A1 FLOOR TREATMENT MACHINE 审中-公开
公开(公告)号：WO2022129900A1
公开(公告)日：2022-06-23
申请号：PCT/GB2021/053302
申请日：2021-12-15
申请人： NUMATIC INTERNATIONAL LIMITED
发明人： FOOKS, Matthew , BUKOWSKI, Piotr
IPC分类号： A47L11/30 , A47L11/40
摘要： The present invention concerns the field of floor treatment machines, including floor scrubbers, polishers and sweepers. The invention particularly relates to walk-behind floor scrubbers having one or more rotating workheads. The invention provides a floor treatment machine comprising a base portion provided with one or more rotatably driven floor-engaging treatment workheads and primary wheel means for supporting at least part of the weight of the machine during travel over a floor surface, the machine having a working configuration in which the weight of the machine is shared between the wheel means and the workheads, and wherein a retractable support is provided which is capable of extending downwards with respect to the workheads from a retracted position in which the support is vertically spaced apart from the floor to a deployed position in which the support acts on the floor so that weight previously taken by the workheads is relieved by the support. Each workhead preferably comprises a floor-facing disc which in a working configuration is substantially parallel to the floor, and when the support is deployed so as to act on the floor the floor facing disc is spaced apart from the floor but remains substantially parallel thereto and supported by the primary wheel means and the support. The support may comprise a wheel, roller, skid or knob. An actuation mechanism for the support deployment may be arranged so that rearward tilting of the base portion about the primary wheel means beyond a predetermined tilt angle causes an actuation traveller to travel under the biasing so as to automatically move the support from its retracted position to the deployed position.

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