Abstract: Provided is an all-electric riding greens mower. The mower includes a frame which is supported for movement upon a plurality of ground engaging wheels and upon which are supported a modularly interchangeable power source and a plurality of reel lawn mowers. An electric motor provides driving torque to enable movement of the mower between and over golf course greens or other surfaces to be mowed, electric motors provide driving torque for each of the reel lawn mowers. The interchangeable power source provides electrical energy for driving the electric motors, including the primary mover and the electrical motors for the reel type lawn mowers. The modularly interchangeable power sources may comprise a bank of batteries, a motor/generator set, a fuel cell, or a combination of these. The power source may be easily exchanged in the field for another, freshly charged power source. Exchange occurs using either a fixed change stand or a mobile change stand.

Abstract: Provided is an all-electric riding greens mower. The mower includes a frame which is supported for movement upon a plurality of ground engaging wheels and upon which are supported a modularly interchangeable power source and a plurality of reel lawn mowers. An electric motor provides driving torque to enable movement of the mower between and over golf course greens or other surfaces to be mowed, electric motors provide driving torque for each of the reel lawn mowers. The interchangeable power source provides electrical energy for driving the electric motors, including the primary mover and the electrical motors for the reel type lawn mowers. The modularly interchangeable power sources may comprise a bank of batteries, a motor/generator set, a fuel cell, or a combination of these. The power source may be easily exchanged in the field for another, freshly charged power source. Exchange occurs using either a fixed change stand or a mobile change stand.

Abstract: An all-electric riding greens mower includes a frame which is supported for movement upon a plurality of ground engaging wheels and upon which are supported a modularly interchangeable power source and a plurality of reel lawn mowers. An electric motor provides driving torque to enable movement of the mower between and over golf course greens or other surfaces to be mowed, electric motors provide driving torque for each of the reel lawn mowers. The interchangeable power source provides electrical energy for driving the electric motors, including the primary mover and the electrical motors for the reel type lawn mowers. The modularly interchangeable power sources may comprise a bank of batteries, a motor/generator set, a fuel cell, or a combination of these. The power source may be easily exchanged in the field for another, freshly charged power source. Exchange occurs using either a fixed change stand or a mobile change stand.

Abstract: A greens mower having internally powered cutting units. The motor to power the cutting units is located inside the cutting unit thus eliminating the need to balance the weight of the motor outside the cutting unit and also eliminating the need for belts, chains, gears or couplers to transfer power from the motor to the cutting unit.

Abstract: A vehicle, such as an extendible boom forklift, that includes a personnel work platform (PWP). The personnel work platform includes a shut-off switch that is connected to the electronic controls for the extendible boom forklift. The operational controls of the extendible boom forklift include a personnel work platform control system that modifies the operation of the extendible boom forklift when the forklift is in a PWP mode. The PWP control system receives inputs from the shut-off switch, a PWP system actuation switch, a service brake pressure switch and a level sensor/switch such that the control system enables the PWP mode only upon satisfying certain safety-related concerns. In the PWP mode, the control system engages the parking brake, declutches the transmission, locks the frame stabilizing cylinder, deactivates the auxiliary and tilt hydraulic functions and limits the frame leveling rate to slow speeds.

Abstract: An all-electric riding greens mower includes a frame which is supported for movement upon a plurality of ground engaging wheels and upon which are supported a modularly interchangeable power source and a plurality of reel lawn mowers. An electric motor provides driving torque to enable movement of the mower between and over golf course greens or other surfaces to be mowed, electric motors provide driving torque for each of the reel lawn mowers. The interchangeable power source provides electrical energy for driving the electric motors, including the primary mover and the electrical motors for the reel type lawn mowers. The modularly interchangeable power sources may comprise a bank of batteries, a motor/generator set, a fuel cell, or a combination of these. The power source may be easily exchanged in the field for another, freshly charged power source. Exchange occurs using either a fixed change stand or a mobile change stand.

Abstract: A greens mower is described having cutting units powered internally. The motor to power the cutting unit is located inside the cutting unit thus eliminating the need to balance the weight of the motor outside the cutting unit and also eliminating the need for belts, chains, gears or couplers to transfer power from the motor to the cutting unit.

Abstract: Provided is an all-electric riding greens mower. The mower includes a frame which is supported for movement upon a plurality of ground engaging wheels and upon which are supported a modularly interchangeable power source and a plurality of reel lawn mowers. An electric motor provides driving torque to enable movement of the mower between and over golf course greens or other surfaces to be mowed, electric motors provide driving torque for each of the reel lawn mowers. The interchangeable power source provides electrical energy for driving the electric motors, including the primary mover and the electrical motors for the reel type lawn mowers. The modularly interchangeable power sources may comprise a bank of batteries, a motor/generator set, a fuel cell, or a combination of these. The power source may be easily exchanged in the field for another, freshly charged power source. Exchange occurs using either a fixed change stand or a mobile change stand.

Abstract: A greens mower having cutting units powered internally. The motor to power the cutting unit is located inside the cutting unit thus eliminating the need to balance the weight of the motor outside the cutting unit and also eliminating the need for belts, chains, gears or couplers to transfer power from the motor to the cutting unit.

Abstract: A vehicle steering control system and apparatus for controlling steering radius to prevent vehicle and surface damage and to provide improved low speed vehicle maneuverability. The steering control system and apparatus provides a first controllably limited turning radius range in relation to a first condition and a second controllably limited turning radius range in relation to a second condition. Examples of the first and second conditions include speed related conditions, such as, the actual speed of the vehicle, a selected gear of the vehicle, and manual selection of the turning radius. The system and apparatus includes a dual stroke hydraulic cylinder having a cylinder body housing a hydraulically controllable primary piston. A shaft is attached to and extends from the primary piston, projects through the cylinder body, and connects to the steering linkage of the vehicle. Hydraulic operation of the primary piston transfers forces along the shaft to the linkage.

Abstract: Apparatus and method for establishing reel-to-bedknife clearance in a lawn mower which has an assembly of the two elements, one movable toward and away from the other. A threaded arrangement is provided for setting the desired clearance in the apparatus, and then, upon releasing a force which moves the two cutting elements into contact with each other, a spring will re-establish the movable parts, through a lost-motion connection, to establish the desired cutting clearance.

Abstract: A lawn mower having a cutting reel and a bedknife as its cutting elements, and with those elements being adjustable toward and away from each other for establishing cutting clearance. A hydraulic system is utilized for establishing the pre-selected clearance and for ultimately setting that clearance and maintaining it.

Abstract: A lawnmower reel-to-bedknife adjustment system wherein the bedknife cutting edge can be automatically positioned relative to the circumference of the cutting reel. An extendable and retractable link is connected to the pivotal bedknife at a numerical advantage relative to the pivot axis and thereby provide for a fine adjustment of clearance between the reel and the bedknife upon extension and contraction of the link. The link can be extended by fluid pressure, or the like, and it can be retracted by spring pressure, and a yielding force is arranged to establish the clearance to a pre-set condition each time. Also, a manual threaded adjustment is provided along the adjustment link so that manual adjustment can be accomplished when desired.

Abstract: A tractor seat-operated hydraulic valve control including a power tractor and a hydraulically powered implement connected with the tractor. A hydraulic valve on the tractor is controlled by a manual lever connected therewith and by a mechanical connection between a pivotally mounted operator's seat and the valve. When the operator is off the seat the control moves the valve to the neutral position.

Abstract: A powered lawn mower hydraulic system for use with a reel type of mower. The system includes a hydraulic pump and a hydraulic motor and a hydraulic valve, all interconnected with hydraulic hoses or lines. The valve permits reversing of the direction of rotation of the motor which is driving the mower reel, and there is a hydraulic flow restrictor in the reversing line for limiting the speed of the motor, and thus the mower, in the reversing direction. Also, there is shown a relief valve for limiting the hydraulic pressure in the reversing mode, and there is also shown a relief valve for limiting the hydraulic pressure in the forward mode.