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US 10,765,286 B2Granted
Surface maintenance machine
AssigneeTennant Company
InventorsMartin L. Dickrell, Ronald W. Lehman, Kyle D. Sedam, Jacob L. Stock
Life of this patent
Estimating the term…
Abstract
A surface maintenance machine comprising two front wheels, at least one rear wheel, a motive source for providing motive force to at least one front wheel to drive the machine on a surface. Embodiments also include an operator platform allowing an operator to stand thereon extending at least partly around the rear wheel, for supporting an operator in a standing position with the operator's feet on either side of the rear wheel.
Claims20
A surface maintenance machine comprising:
- a maintenance head assembly supported by the machine and extending toward a surface, the maintenance head assembly comprising one or more surface maintenance tools for performing a surface maintenance operation;
- two front wheels each having a rotational axis, at least one of which is steerable to change an angle between the rotational axis of the at least one steerable front wheel and a longitudinal centerline of the machine, the two front wheels being positioned to the front of a transverse centerline of the machine when the machine is moving in a forward direction;
- at least one rear wheel positioned to the rear of the transverse centerline, the rear wheel being interior, relative to a direction perpendicular to the longitudinal centerline of the machine, to the at least one steerable front wheel, wherein the rear wheel is at a point about which the machine pivots when the machine is being turned;
- and
- a motive source for providing motive force to at least one front wheel to drive the machine on a surface, the motive source being coupled to the at least one front wheel.
2 more elements
A surface maintenance machine comprising:
- a maintenance head assembly supported by the machine and extending toward a surface, the maintenance head assembly comprising one or more surface maintenance tools for performing a surface maintenance operation;
- two front wheels each having a rotational axis, at least one of which is steerable to change an angle between the rotational axis of the at least one steerable front wheel and a longitudinal centerline of the machine, the two front wheels being positioned to the front of a transverse centerline of the machine when the machine is moving in a forward direction;
- at least one rear wheel positioned to the rear of the transverse centerline, the rear wheel being interior, relative to a direction perpendicular to the longitudinal centerline of the machine, to the at least one steerable front wheel;
- a motive source for providing motive force to at least one front wheel to drive the machine on a surface, the motive source being coupled to the at least one front wheel;
- and
- a steering assembly comprising a steering wheel, the steering assembly being coupled to and configured for steering the steerable front wheel.
3 more elements
A surface maintenance machine comprising:
- a maintenance head assembly supported by the machine and extending toward a surface, the maintenance head assembly comprising one or more surface maintenance tools for performing a surface maintenance operation;
- two front wheels each having a rotational axis, at least one of the two front wheels is coupled to a steering assembly configured to steer the at least one front wheel to change an angle between the rotational axis of the at least one steerable front wheel and a longitudinal centerline of the machine, the two front wheels being positioned to the front of a transverse centerline of the machine when the machine is moving in a forward direction, and the two front wheels being spaced off of the longitudinal centerline of the machine;
- at least one rear wheel positioned to the rear of the transverse centerline, the rear wheel being positioned on the longitudinal centerline of the machine and interior, relative to a direction perpendicular to the longitudinal centerline of the machine, to the at least one steerable front wheel, wherein the rear wheel is at a point about which the machine pivots when the machine is being turned;
- and
- a motive source for providing motive force to at least one front wheel to drive the machine on a surface, the motive source being coupled to the at least one front wheel.
2 more elements
Dependencies are inferred from the claim text.