Patents Assigned to HRM Enterprises, Inc.
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Patent number: 11291158Abstract: 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.Type: GrantFiled: May 1, 2019Date of Patent: April 5, 2022Assignee: HRM Enterprises, Inc.Inventors: Richard Zerbarini, Paul Zerbarini, Robert Zerbarini, David Jalbert
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Patent number: 11006576Abstract: A lawn mower includes a housing with a baffle that defines an air path to produce a cross-flow. The baffle includes a vent to manipulate air pressures within the housing and facilitate movement of plant clippings. A hand-held device for trimming with a rotary blade assembly may also include a housing that defines an air path to produce a cross-flow. The hand-held trimming device may also a baffle with a vent to facilitate movement of plant clippings.Type: GrantFiled: August 12, 2019Date of Patent: May 18, 2021Assignee: HRM Enterprises, Inc.Inventors: Richard Zerbarini, Robert Zerbarini, Paul Zerbarini
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Patent number: 10524414Abstract: A lawnmower with a plurality of blade holding elements in a horizontally rotating blade assembly holds a plurality of blades in a blade channel. The blade assembly is covered by a blade assembly guard that is only open underneath at a point where blades in the blade assembly would cut grass during normal operation. A blade assembly access panel in the upper portion of the blade assembly guard allows blades or a blade assembly to be easily replaced.Type: GrantFiled: September 11, 2017Date of Patent: January 7, 2020Assignee: HRM Enterprises, Inc.Inventor: Richard Zerbarini
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Patent number: 10375883Abstract: A lawn mower includes a housing with a baffle that defines an air path to produce a cross-flow. The baffle includes a vent to manipulate air pressures within the housing and facilitate movement of plant clippings. A hand-held device for trimming with a rotary blade assembly may also include a housing that defines an air path to produce a cross-flow. The hand-held trimming device may also a baffle with a vent to facilitate movement of plant clippings.Type: GrantFiled: June 27, 2017Date of Patent: August 13, 2019Assignee: HRM Enterprises, Inc.Inventors: Richard Zerbarini, Robert Zerbarini, Paul Zerbarini
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Patent number: 9907226Abstract: A lawnmower uses thin, replaceable blades with a hardened cutting edge and a cross-section defining an airfoil retained in cartridges that are inserted and removed from rotors in a blade assembly at need. The cartridges comprise a blade and rotor interlocking elements affixed to the blade, each rotor interlocking element corresponding to one rotor in the blade assembly. Each rotor and rotor interlocking element includes features that allow the two to be securely engaged so that the rotors may be spun quickly in a mower blade assembly to cut grass.Type: GrantFiled: November 14, 2016Date of Patent: March 6, 2018Assignee: HRM Enterprises, Inc.Inventors: Richard Zerbarini, Paul Zerbarini, Robert Zerbarini, Dan Meyer, David Jalbert, Sean Patrick Suiter
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Patent number: 9756781Abstract: A lawnmower with a plurality of blade holding elements in a horizontally rotating blade assembly holds a plurality of multi-ductility blades with a maximum thickness of 0.075 inches in a blade channel and in a substantially tangential orientation. The multi-ductility blades include a hardened cutting edge of Rockwell hardness greater than 50 and ductile portion with Rockwell hardness less than 50.Type: GrantFiled: January 9, 2017Date of Patent: September 12, 2017Assignee: HRM Enterprises, Inc.Inventor: Richard Zerbarini
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Patent number: 9538704Abstract: A lawnmower with a plurality of blade holding elements in a horizontally rotating blade assembly holds a plurality of replaceable blades in a blade channel. The blade assembly is covered by a blade assembly guard that is only open underneath at a point where blades in the blade assembly would cut grass during normal operation. A blade assembly access panel in the upper portion of the blade assembly guard allows blades to be easily replaced.Type: GrantFiled: February 15, 2013Date of Patent: January 10, 2017Assignee: HRM Enterprises, Inc.Inventor: Richard Zerbarini
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Patent number: 9491905Abstract: A lawnmower uses thin, replaceable blades with a hardened cutting edge and a cross-section defining an airfoil. Such blades are held by blade holding elements in a horizontally rotating mower blade assembly. The blade assembly and blade assembly housing are configured in a specialized cross-flow mower assembly to reduce grass leave tip damage, increase cut quality and overall aesthetic appeal, and create a cross-flow air current while consuming less power and providing a reduced environmental impact.Type: GrantFiled: October 27, 2014Date of Patent: November 15, 2016Assignee: HRM Enterprises, Inc.Inventor: Richard Zerbarini