Deere & Company

Stanley Kermit Hall

Jeffrey David Witwer

John Louis Bocksnick

Chris Michael Georgoulias

Shane D Simon

Jennifer Lynn Jaramillo

Bradley P Aldridge

Roger Howard Tesch

Marquez Giovonnie Perkins

Neil Vincent Harber

Robert Alan Henson

Zackary P Sipper

James Edward Muse

Loren A Zabel

Allen J Takes

Randall G Peters

Randall Peters

An aerator with variable delay of the coring head includes a lift/lower control on an aerator control panel that raises and lowers a coring head and starts or discontinues rotation of a coring head crankshaft that reciprocates a plurality of coring tines. A delay timer provides a variable time period between starting to raise or lower the coring head and the rotation of the crankshaft. A switch is provided on the control panel to preset the time period.

Aerator with variable delay of coring head

An aerator with active turf calibration of a ground sensor that provides signals to a controller relating to changes in slope of a ground surface. The controller adjusts the position of a coring head based on signals from the ground sensor. The controller determines an offset from a neutral position of the ground sensor based on signals from the ground sensor on a flat surface during aeration compared to the neutral position of the ground sensor on a flat surface from static calibration.

Aerator with active turf calibration of ground sensor

An aerator with coring depth adjustment includes a coring depth adjust rod centrally positioned between a left side and a right side of the coring head. A portion of the coring depth adjust rod is threaded to a frame member of the coring head, and a base of the rod abuts a stop on a frame member of the aerator. The coring depth adjust rod rotates to raise and lower the coring head relative to the aerator frame to vary the coring depth.

Aerator with coring depth adjustment

An aerator hole spacing control with a hydrostatic traction drive including a pump and a plurality of wheel motors, a control arm mounted on a control shaft of the pump that controls the direction and the speed of the pump, and a cam follower on the control arm that contacts a cam surface having a minimum coring speed position, a maximum coring speed position, and a transport position. The cam surface may be linked to an operator speed control that moves the cam surface to determine where the cam follower contacts the cam surface to change the speed of the pump anywhere between the minimum coring speed position and the maximum coring speed position without stopping the pump.

Aerator hole spacing control

A mounting assembly to mount the base of a hydraulic motor on a mower deck includes a cast iron mounting plate having stiffening structures around the perimeter and spanning the perimeter, and rubber isolators between the mounting plate and the mower deck.

Mounting hydraulic motor on mower deck

A hood covers an internal combustion engine on the rear of a grass mowing machine. The hood has a top surface with a plurality of air intake openings recessed below the top surface, and an integral air duct. The integral air duct extends over the engine between the air intake openings and an air inlet side of the radiator and/or oil cooler adjacent the rear of the grass mowing machine. The air intake openings closest to the air inlet side of the radiator and/or oil cooler are dimensioned to limit the air intake velocity and prevent buildup of debris on screens or grilles over the openings.

Hood with integral air duct

An elongated air intake screen is provided for vehicles such as commercial mowers that operate in conditions having substantial airborne foreign materials that tend to clog the screen. The exterior surface of the screen is provided with intake openings throughout its 360 degree surface to draw air over a substantial area. It is located at the upper edge of the vehicle to separate it from the cutting decks and area where airborne grasses and similar foreign materials are encountered. Air drawn into the screen is used to cool the engine and hydraulic fluid heat exchangers and provide for engine combustion needs.

Growing community of inventors

Godwin, NC, United States of America

Stanley Kermit Hall