| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 056110900 | Having fluid-pressure or stored-energy motor | 23 |
| 20080223012 | Cordless electric mower fail-safe charge lockout - A cordless mower, including a start-up key that must be removed to charge a battery. The start-up key must be inserted to operate the motor, and can be moved to a different position or removed to interrupt the motor. The mower cannot be operated when the switch is not actuated. Some embodiments include a lockout relay that disables charging of the battery when a charge on the battery exceeds a predetermined threshold. Thus, the cordless mower can be safely charged by removing the start-up key and inserting a charge connector that cannot otherwise be inserted. The cordless mower can be safely powered by inserting the start-up key and moving it into an operation position, and then closing the switch to run the mower. The cordless mower can be safely shut off in an emergency by removing the start-up key or moving it to a safety position. | 09-18-2008 |
| 20080245043 | Rotary cutter device with integrated cooling system - A hydraulic cutter device incorporates a rotatable base including a plurality of spaced cutter teeth. A protective shield covers at least a portion of the base. A fluid cooler is located adjacent the protective shield, and defines a window for movement of ambient air from a relatively high-pressure area upstream of the fluid cooler to a relatively low-pressure area downstream of the fluid cooler. A hydraulic motor is adapted for rotating the base, and includes a plurality of hydraulic lines communicating with the fluid cooler. Rotation of the base creates a pressure reduction downstream of the fluid cooler causing ambient air flow into and through the fluid cooler to cool fluid moving into and from the hydraulic motor. | 10-09-2008 |
| 20080289309 | Mower with Hybrid Prime Mover Having Fuel Cell, Brushless Electric Motors for Driving Cutting Units, and Electric/Hydraulic Actuator for Lift and Lower System - This invention relates to a hybrid lawn mower powered by a fuel cell and an electrical storage system, both of which supply electric power to the drive wheels and cutting units of the mower. The electrical storage system comprises an ultracapacitor pack or a battery pack. The electric motor driving each cutting unit comprises a brushless motor having an integrated gear reduction stage. In addition, the motor includes an integrated electronics housing in which the electronics for controlling and powering the motor are packaged. The cutting units are lifted out of engagement with the ground by a lift and lower system comprising an electric/hydraulic actuator that is driven only during lifting of the cutting units. The cutting units are lowered by releasing fluid pressure in the lift and lower system and permitting the force of gravity to lower the cutting units. | 11-27-2008 |
| 20090266042 | MOWER - A battery-powered lawn mower includes a deck supported by wheels on a first side and a cutting mechanism having a first motor, including a first output member. A first cutting blade is driven by the first output member. A self-drive transmission has a second motor that selectively communicates an output to a drive axle. A force feedback controller measures a load on the first motor and changes an output voltage to the second motor based on the measured load. | 10-29-2009 |
| 20100115903 | Drive system for a flail mower - A direct drive system for the rotating cutter shaft assembly in a flail mower includes a internally splined collar having a thermal interfitment within and welded attachment to a rotating shaft assembly. An externally splined shaft from a drive motor mounted to the flail mower housing fits into the internally splined collar to provide rotational force to the rotating cutter shaft assembly. | 05-13-2010 |
| 20100275564 | MOWER - A battery-powered lawn mower includes a deck, a latch assembly, a battery, a motor and a blade. The deck is supported by wheels and defines a pocket. The latch assembly is coupled to the deck and is movable between a locked position and a fully opened position. The battery is secured within the pocket by the latch assembly in a first configuration and is removable from the pocket in a second configuration. The motor is supported by the deck and electrically coupled to the battery in the first configuration. The blade is coupled to the deck and driven by the motor. During operation, the battery powers the motor to drive the blade. | 11-04-2010 |
| 20110088362 | MOWER - A cordless mower includes a deck, a rechargeable battery, a blade for cutting grass, a blade motor and a drive motor. The deck is supported by front and rear wheels and has a top side, a bottom side, a front end and a rear end. The rechargeable battery is supported on the deck. The blade is on the bottom side of the deck and is coupled with a blade motor. The drive motor is connected to the rear wheels for driving said rear wheels to move the mower. The drive motor is located in a chamber at the rear of the mower adjacent the rear wheels. The chamber has an opening therein to allow air to flow through. | 04-21-2011 |
| 20110289896 | Electric Lawn Mower - An electric lawn mower includes a main frame, a mower deck supported by the main frame, a castor supported by the main frame, a sub frame, a pair of transaxles, and a pair of motor drivers. Each of the transaxles includes a transaxle housing, an electric motor disposed in the transaxle housing, a single axle supported by the transaxle housing, and a drive wheel fixed on the axle outside of the transaxle housing. The motor drivers supply electric power to the respective motors of the respective transaxles. The sub frame, supporting the transaxles and the motor drivers, is connected to the main frame. | 12-01-2011 |
| 20120060461 | MOWER WITH FOUR WHEEL STEERING AND HYDRAULIC FOUR WHEEL DRIVE - A mower having a cutting deck for cutting grass has four drive wheels arranged in a square or rectangular configuration on the mower's frame. Four wheel drive and four wheel steering are employed with the drive wheels. The four wheel drive is provided by a hydraulic drive system that employs a pair of identical serial circuits which have their own pumps with each pump serially sending its output through a rear drive motor and a front drive motor that are catty-corner to one another on the frame, i.e. are on opposite sides of the motor. Various flow crossover paths and flow recirculation paths are provided in the serial circuits to ensure the drive motors receive adequate flow in maximum turns of the mower. The flow recirculation paths around a pair of drive motors at one end of the frame are shut off during reverse and during braking so that all drive motors retain hydraulic braking in these conditions. | 03-15-2012 |
| 20120137643 | LAWN MOWER - A lawn mower includes an electric motor, a driving assembly coupled to the electric motor, a blade assembly coupled to the driving assembly, a battery for providing electricity to the electric motor, a switch unit electrically connected to the electric motor and the battery, and a detecting unit. The detecting unit includes a sampling resistor electrically connected in series with the battery, and a trigger circuit electrically connected in parallel with the sampling resistor and configured to control the switch unit to make or break electrical connection between the electric motor and the battery according to detected voltage across the sampling resistor. | 06-07-2012 |
| 20120260617 | CHARGING STATION FOR BATTERY-POWERED LAWN MOWER - A lawn mower system includes a lawn mower and a charging station. The lawn mower includes a rechargeable battery, an electric motor powered by the battery, and a secondary coil electrically coupled to the battery. The charging station includes a primary coil configured to induce a current in the secondary coil for charging the battery of the lawn mower. | 10-18-2012 |
| 20120317950 | ELECTRIC LAWN MOWERS - An electric lawn mower may include a mower body including an electric motor, a cutting blade rotatably driven by the electric motor for mowing a lawn, and a battery mount configured to hold a battery where the electric motor is driven by electric power from the battery, and the battery is mountable on the battery mount at a mount position where the battery is positioned higher than the electric motor and rearward of an axis of the electric motor. | 12-20-2012 |
| 20130239533 | LAWN-CARE APPARATUS - A lawn-care apparatus includes a battery-compartment having an access opening and a roof section. The roof section is configured to provide cover to the battery-compartment. A battery may be inserted into the battery-compartment through the access opening without displacing the roof section. | 09-19-2013 |
| 20140000231 | APPARATUS FOR CUTTING GRASS | 01-02-2014 |
| 20140305091 | RESIDENTIAL TRANSMISSION - Provided is a hydrostatic transmission including a pump/motor module having a reservoir housing and a hydraulic pump and motor disposed in the reservoir housing, and a speed reduction module having a speed reduction housing coupled to the reservoir housing and a speed reduction assembly disposed in the speed reduction housing. The speed reduction assembly includes an input member driven by the output shaft of the hydraulic motor, an output member rotationally connected to the input member by one or more belts/chains, and an axle shaft driven by rotation of the output member. By providing the speed reduction assembly in a separate housing from the hydraulic fluid in the reservoir housing, the speed reduction assembly is isolated from the hydraulic fluid thereby preventing particulates from the speed reduction assembly from entering the hydraulic fluid in the reservoir housing. | 10-16-2014 |
| 20150121829 | AUXILIARY AXLE FOR AN AGRICULTURAL HARVESTER DURING ROAD TRANSPORT - An agricultural harvester includes a chassis and a feeder housing pivotally mounted to the chassis. The agricultural harvester is characterized in that an axle assembly is pivotally mounted to the feeder housing. A hydraulic actuator is coupled with the axle assembly for pivotally moving the axle assembly in upward and downward directions from the feeder housing. A road mode switch provides a first output signal indicative of a field mode and a second output signal indicative of a road mode. A controller is coupled with the road mode switch and the hydraulic actuator. The controller receives the second output signal from the road mode switch and controls the hydraulic actuator, whereby the hydraulic actuator provides a substantially constant down force between the axle assembly and a ground surface. | 05-07-2015 |
| 20150334918 | HYDRAULIC DRIVE AND BRAKING CIRCUIT FOR A MATERIAL REDUCING APPARATUS - A material reducing apparatus is provided. The material reducing apparatus includes a hydraulic pump, a rotary reducing component, a primary hydraulic circuit, and a secondary hydraulic circuit. The primary hydraulic circuit includes a hydraulic motor that drives rotation of the rotary reducing component, an inlet line for delivering pressurized hydraulic fluid to an inlet of the hydraulic motor, and an outlet line for receiving the hydraulic fluid from an outlet of the hydraulic motor. The primary hydraulic circuit also includes at least one braking valve in fluid communication with the outlet line of the hydraulic motor, and a hydraulic accumulator in fluid communication with the inlet line. The hydraulic accumulator is sized to contain a stored volume of pressurized hydraulic fluid. The secondary hydraulic circuit includes an actuator that is selectively driven by pressurized hydraulic fluid from the hydraulic pump. | 11-26-2015 |
| 20160066502 | PICK-UP ARRANGEMENT FOR HARVESTED CROP AND CORRESPONDING PICK-UP MACHINE - A pick-up arrangement for picking up harvested crop, comprises a pick-up device which has a pick-up device frame defining a pick-up opening located on a pick-up side of the pick-up device and a pick-up member, located on the pick-up side and, adapted to pick-up harvested crop and defining a pick-up width, and a guiding device adapted to guide harvested crop located outside the pick-up width into the pick-up opening. The pick-up device defines a pick-up direction. The guiding device comprises a guiding device frame and a first guiding member extending outside the pick-up width, being rotatably mounted with respect to the guiding device frame, and being adapted to transport harvested crops located outside the pick-up width into the pick-up opening. | 03-10-2016 |
| 20160081275 | Self Adjustable Rotor for Sugar Cane Harvester - A sugar cane harvester including a chassis for power directional movement across a field with a row dividing assembly feeding a base cutter that severs sugar cane stalks for delivery to a feed system. A rotor assembly is provided between the base cutter and the feed assembly with the rotor assembly being powered for rotation about an axis at right angles to the flow of sugar cane stalks through the harvester. The rotor assembly includes a pair of cylinders powered by a hydraulic motor with the cylinders having axially extending ribs and radially extending fingers for moving sugar cane in a downstream direction. The rotor assembly is connected to the harvester chassis by a linkage and supported by an actuator which is controlled by a hydraulic system to maintain a uniform and preselected downward pressure on sugar cane stalks as they move in a downstream direction through the harvester. | 03-24-2016 |
| 20160100524 | HARVESTER - A harvester apparatus, for harvesting crops for essential oil extraction, includes a longitudinal conveyor subsystem and a lateral conveyor subsystem. The longitudinal conveyor subsystem is positionable in crop receiving communication with a harvester header and is configured to convey a crop longitudinally rearward from the harvester header to a transition location. The lateral conveyor subsystem is disposed rearward of the longitudinal conveyor subsystem and in crop receiving communication with the longitudinal conveyor subsystem. The lateral conveyor subsystem is configured to convey the crop laterally from the longitudinal conveyor subsystem to an adjacent crop transport vehicle. | 04-14-2016 |
| 20160106021 | Variable Precharge Accumulator for Agricultural Header - A harvesting header for use with a crop harvesting machine has a feederhouse interface and a header frame providing structural support for the harvesting header. A pivotable connection between the feederhouse interface and the header frame enable the header frame to pivot with respect to the feederhouse interface. At least one hydraulic ram connects between the feederhouse interface and the header frame to pivot the harvesting header on the feederhouse interface. A hydraulic supply provides pressurized hydraulic fluid to the hydraulic ram. An accumulator assembly fluidically connects between the hydraulic supply and the at least one hydraulic ram. The accumulator assembly has a precharge fluid/gas interface between a gas chamber and the hydraulic supply, and a working fluid/gas interface between the gas chamber and the at least one hydraulic ram. | 04-21-2016 |
| 20160150730 | Vertical Roller Device to Aid in Feeding Sugar Cane Stalk to Harvester | 06-02-2016 |
| 20190141897 | SYSTEM FOR CONTROLLING A BRAKE IN AN AUXILIARY HYDRAULIC SYSTEM | 05-16-2019 |
