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US 11,291,158 B2Granted
Cross-flow horizontal rotary mower
AssigneeHRM Enterprises, Inc.
InventorsRichard Zerbarini, Paul Zerbarini, Robert Zerbarini, David Jalbert
Life of this patent
Estimating the term…
Abstract
A blade cartridge for a horizontal rotary mower includes airfoil blades and diverter blades that alter airflow within the blade cartridge and prevent grass clippings from accumulating. The horizontal rotary lawnmower may be adapted to engage a cleaning station with brushes or cleaning pads to remove grass clippings while the horizontal rotary lawnmower blade assembly is operated in reverse. The cleaning station may automatically engage a reverse operation. The cleaning station may also hone the blades of the blade assembly while operating in reverse.
Claims20
A lawnmower comprising:
- a housing;
- a plurality of wheels disposed on the housing;
- a motor;
- and
- a blade assembly connected to the motor configured to rotate about an axis parallel to a surface being mowed, the blade assembly comprising:
- a plurality of cutting blades, each cutting blade fixed at an orientation relative to the axis, each cutting blade defining an airfoil to produce a cross-flow for transiting grass clippings and disposed a first distance from the axis;
- and
- a plurality of diverter blades, each diverter blade fixed at an orientation relative to the axis, each of the plurality of diverter blades associated with a cutting blade and disposed a second distance from the axis less than the first distance,
- wherein each of the plurality of diverter blades are configured to alter a cross-flow within the blade assembly to prevent the grass clippings from sticking to the plurality of cutting blades.
6 more elements
A system comprising:
- a lawnmower comprising:
- a housing;
- a plurality of wheels disposed on the housing;
- a motor;
- and
- a blade assembly connected to the motor configured to rotate about an axis parallel to a surface being mowed, the blade assembly comprising:
- a plurality of cutting blades, each cutting blade fixed at an orientation relative to the axis, each cutting blade defining an airfoil to produce a cross-flow for transiting grass clippings and disposed a first distance from the axis;
- and
- a plurality of diverter blades, each diverter blade fixed at an orientation relative to the axis, each of the plurality of diverter blades associated with a cutting blade and disposed a second distance from the axis less than the first distance,
- wherein each of the plurality of diverter blades are configured to alter a cross-flow within the blade assembly to prevent the grass clippings from sticking to the plurality of cutting blades;
- and
- a cleaning station comprising:
- a cutting blade cleaning element;
- and
- at least one wheel recess,
- wherein the at least one wheel recess is disposed such that when corresponding wheels of the lawnmower engage the at least one wheel recess, the blade assembly is disposed at an operative location relative to the cutting blade cleaning element.
13 more elements
A lawnmower comprising:
- a housing;
- a plurality of wheels disposed on the housing;
- a motor;
- and
- a blade assembly connected to the motor configured to rotate about an axis parallel to a surface being mowed, the blade assembly comprising:
- a plurality of cutting blades, each having a front angle between 26° and 33° and a back angle between 85° and 95°, each cutting blade defining an airfoil to produce a cross-flow for transiting grass clippings, wherein a proximal edge of each cutting blade is disposed a first distance from the axis;
- and
- a plurality of diverter blades, each of the plurality of diverter blades defining an airfoil, each of the plurality of diverter blades associated with a cutting blade, wherein a distal edge of each diverter blade is disposed the first distance from the axis,
- wherein each of the plurality of diverter blades are configured to alter a cross-flow within the blade assembly to prevent the grass clippings from sticking to the plurality of cutting blades.
6 more elements
Dependencies are inferred from the claim text.