Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1997-10-31
1999-12-28
McKane, Elizabeth
Brushing, scrubbing, and general cleaning
Machines
Brushing
15 83, 153403, E01H 102
Patent
active
060063904
ABSTRACT:
The present invention relates to an improved mechanism (100) for attaching a ground-engaging surface maintenance implement, preferably a front-mounted rotary sweeper (300), to a traction vehicle (200). The mechanism includes a four-bar linkage (102) to "yaw" the implement from an initial position, where the sweeper brush axis is generally perpendicular to the longitudinal axis of the traction vehicle (200), to a first or second position, characterized by the brush axis assuming an angled (i.e., non-perpendicular) orientation, the first and second positions being equal but opposite to one another. The mechanism further includes a central pivot (104) which permits the implement to "roll" or rotate preferably about a horizontal axis perpendicular to the brush axis such that the sweeper (300) can maintain ground contact across its lateral width when traversing laterally uneven terrain. The preferred mechanism also includes a force-producing device (148), selectively activated by the operator, to translate the implement from its initial position to the first or second position or anywhere in-between. Finally, the preferred embodiment of the present invention includes ground-contacting caster-wheels (318) to support or partially support the weight of the sweeper and therefore relieve the weight borne by the sweeper brushes (304).
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Bischel Randall J.
Pahl Gaylord M.
Peterson Daniel E.
Buckley R. Lawrence
McKane Elizabeth
The Toro Company
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