JOHN G BERGER
Engineers in Landisville, PA

License number
Pennsylvania PE043687E
Category
Engineers
Type
Professional Engineer
Address
Address
Landisville, PA 17538

Professional information

John Berger Photo 1

Skid Steer Loader Neutral Drift Correction Method

US Patent:
6735889, May 18, 2004
Filed:
Jan 14, 2003
Appl. No.:
10/341461
Inventors:
John G. Berger - Landisville PA
John R. Haupt - Lititz PA
Assignee:
New Holland North America, Inc. - New Holland PA
International Classification:
E02F 920
US Classification:
37348, 701 50
Abstract:
A method of manual control neutral drift correction for a work vehicle is characterized by the steps of: sensing a position of a first manual control using a first position sensor when an activation switch is activated, wherein the first position sensor generates a first input signal; sending the first input signal to a controller; retrieving a stored first manual control neutral position value from a memory unit; calculating a first corrected manual control neutral position value using the controller, wherein the first corrected manual control neutral position value is calculated using the first input signal and the first manual control position value; and utilizing the first corrected manual control neutral position value to generate a first control signal for operating a first electro-hydraulic valve, wherein the first control signal is generated by the controller to operate the first electro-hydraulic valve to effect movement of a first assembly.


John Berger Photo 2

Skid Steer Loader Bucket Shaker

US Patent:
6757992, Jul 6, 2004
Filed:
Jan 14, 2003
Appl. No.:
10/341369
Inventors:
John G. Berger - Landisville PA
John R. Haupt - Lititz PA
Assignee:
New Holland North America, Inc. - New Holland PA
International Classification:
E02F 502
US Classification:
37348, 37904, 701 50
Abstract:
A work vehicle having an implement, including: a frame; a boom arm assembly connected at one end to the frame; an implement assembly pivotally connected to another end of the boom arm assembly and including the implement; a first hydraulic implement cylinder connected to the implement assembly and positioned to pivotally rotate the implement relative to the boom arm assembly when a piston of the first implement cylinder is extended or retracted, the first hydraulic implement cylinder being connected to a first electrohydraulic valve for activating extension and retraction of the piston of the first implement cylinder; and a controller connected to send control signals to activate the first electrohydraulic valve, wherein the controller sends a series of shaking control signals to alternately extend and retract the first implement cylinder to effect a shaking movement of the implement.


John Berger Photo 3

Security And Safety Interlocks For A Loader

US Patent:
5547039, Aug 20, 1996
Filed:
Nov 25, 1994
Appl. No.:
8/348910
Inventors:
John G. Berger - Landisville PA
Robert E. Long - Lancaster PA
Darryl T. Leeds - Wrightsville PA
Assignee:
New Holland North America, Inc. - New Holland PA
International Classification:
B60R 2500
US Classification:
180287
Abstract:
A front end loader is provided with a seat switch that is closed when an operator sits in a seat and a seat belt switch that is closed when a seat belt is fastened. Closure of the seat switch enables a programmable controller which begins executing a program. The program repetitively checks the status of the seat and seat belt switches and enables the hydraulic controls for the boom and bucket only if (1) the seat belt switch is not closed at the time the operator sits in the seat and (2) subsequent to sitting in the seat the operator fastens the seat belt. The system makes it inconvenient for an operator to defeat the purpose of the seat belt by fastening it and sitting on it since, on each entry into the operator's cab, the operator must unbuckle the seat belt before sitting in the seat in order to enable the boom and bucket controls. To deter theft, the operator may lower the boom and bucket to engage the ground and then enter any two-digit lock code using two manual switches. Once a lock code has been entered, the boom and bucket hydraulic controls are disabled until the operator follows a specific procedure and again enters the same two-digit lock code.


John Berger Photo 4

Automatic Recognition Of Different Types Of Liquid Level Sensors

US Patent:
5982290, Nov 9, 1999
Filed:
Sep 10, 1998
Appl. No.:
9/151093
Inventors:
John G. Berger - Landisville PA
Mark K. Chow - Paoli PA
Assignee:
New Holland North America, Inc. - New Holland PA
International Classification:
G08B 2100
US Classification:
340618
Abstract:
A system for indicating the level of a liquid in a container is operable with either an analog type liquid level sensor producing an output signal which varies linearly in magnitude with the level of liquid, or a digital liquid level sensor producing a cyclic pulse width modulated signal which varies in duration according to the liquid level. One or the other type sensor is connected to an analog wire and a microprocessor is programmed to detect positive and negative going edges of pulses on the wire and generate values representing the duration of the pulses. If pulse edges are detected, the microprocessor uses the generated values representing the duration of the pulses to access a conversion table and obtain a multi-bit value for energizing the display. If no pulse edges are detected, the magnitude of the signal on the analog wire is converted to an equivalent digital value which is applied to a second conversion table to derive a multi-bit value for energizing the display. The liquid may be a fuel and the container may be the fuel tank of a vehicle.


John Berger Photo 5

Signal Light System For Agricultural Equipment

US Patent:
6239696, May 29, 2001
Filed:
Mar 30, 1999
Appl. No.:
9/281280
Inventors:
John G. Berger - Landisville PA
Philip J. Ehrhart - Narvon PA
Assignee:
New Holland North America, Inc. - New Holland PA
International Classification:
B60Q 126
US Classification:
340463
Abstract:
A self propelled windrower having no brake pedal is provided with a signal light system conforming to standards for agricultural equipment traveling on public roads. The ground speed of the equipment is sensed and, after it exceeds a threshold speed, computation of equipment acceleration/deceleration begins. When the deceleration exceeds a deceleration threshold, the brake lamps are enabled according to the settings of left turn and right turn signal switches. The brake lamps are enabled as long as the deceleration exceeds the threshold and for a short interval (2 sec) thereafter. If the speed drops below the speed threshold during the short interval, the brake lamps are enabled for an extended period (2 min).


John Berger Photo 6

Adjustment Of A Shear Bar Using An Air-Borne Sound Detector

US Patent:
5083976, Jan 28, 1992
Filed:
Oct 26, 1990
Appl. No.:
7/603608
Inventors:
John R. McClure - New Holland PA
John G. Berger - Landisville PA
Assignee:
Ford New Holland, Inc. - New Holland PA
International Classification:
A01D 7518
US Classification:
460 1
Abstract:
In a forage harvester, a microphone is used to detect air-borne sounds waves generated by impacts of a rotating cutterhead on a shear bar during adjustment of the shear bar relative to the cutterhead. In response to the detected sound waves, the microphone produces electrical output signals which are applied to a control circuit, the control circuit producing output signals to selectively drive first and second motors to move one end or the other of the shear bar. The microphone may be mounted in positions remote from the shear bar, such as on side sheets defining lateral limits of the crop feed path, or in the interior of a crop feed roll. A vibration absorbing pad is provided between the microphone and its support to isolate the microphone from mechanical vibrations of the support. In one embodiment the microphone serves not only to detect air-borne sound waves generated by impacts of a rotating cutterhead on a shear bar, but also to detect the air-borne sound waves generated by impacts of stones and other hard objects on the crop feed mechanism.


John Berger Photo 7

Adaptive Engine Preheat

US Patent:
5469819, Nov 28, 1995
Filed:
Nov 25, 1994
Appl. No.:
8/348911
Inventors:
John G. Berger - Landisville PA
Dale A. Ashcroft - New Holland PA
Assignee:
Ford New Holland, Inc. - New Holland PA
International Classification:
F02N 1702
US Classification:
1231796
Abstract:
A diesel engine preheat system includes a temperature sensor for sensing the temperature of the engine coolant, engine heaters for heating the engine, and a microprocessor for calculating the duration of a preheat cycle. When an ignition switch is turned on, the microprocessor samples the output of the temperature sensor to determine the initial engine temperature. The microprocessor computes the required heating time from the initial temperature and a stored parameter representing the relationship between increase in temperature and heating time of the engine. The microprocessor energizes a relay to connect the engine heaters to a battery for the computed time. During the preheat cycle the microprocessor decrements the computed heating time and energizes a visual display to display the time remaining in the preheat cycle.


John Berger Photo 8

Acoustic Stone Detection For A Feederhouse On An Agricultural Combine

US Patent:
2006027, Dec 14, 2006
Filed:
Mar 31, 2006
Appl. No.:
11/396082
Inventors:
John Berger - Landisville PA, US
David Heinsey - Stevens PA, US
John Crego - New Holland PA, US
Terry Moyer - Denver PA, US
International Classification:
A01D 75/18
US Classification:
05601020J
Abstract:
An improvement to the feederhouse on an agricultural combine. The invention includes a stone detection and ejection system on the feederhouse of an agricultural combine and an acoustic array positioned beneath the front drum and having an acoustic sensor and sounding plate. The sounding plate is generally parallel to the feederhouse floor and includes interruptions configured upon its surface to ensure that a stone or other hard object, sliding over its surface, or a flow of crop material carrying a stone, excites the plate to a sufficient magnitude detectable by an acoustic sensor.


John Berger Photo 9

Windrower Header Speed Control

US Patent:
6167685, Jan 2, 2001
Filed:
Mar 24, 1999
Appl. No.:
9/275404
Inventors:
John G. Berger - Landisville PA
Garth H. Bulgrien - Ephrata PA
Assignee:
New Holland North America, Inc. - New Holland PA
International Classification:
A01D 6906
US Classification:
56 10.2A
Abstract:
A system for controlling the header speed of a windrower to a set point includes a variable displacement pump producing a variable outflow of hydraulic fluid for driving the header via two hydraulic motors, the system being characterized in that the pump is driven by a pulse width modulated (PWM) signal having a duty cycle that is dependent on the speed and the acceleration of the header. When the header speed falls outside a window or range of speeds centered at the set point, header speed is used to modify the duty cycle of the PWM signal and bring the header speed back within the window. In addition, the duty cycle of the PWM signal is decremented if the acceleration of the header exceeds a threshold and the header includes disk type cutters.


John Berger Photo 10

Electronic Speed Control System For Farm Machines

US Patent:
7082361, Jul 25, 2006
Filed:
Feb 9, 2004
Appl. No.:
10/774794
Inventors:
John G. Berger - Landisville PA, US
Jeremy Daniel Peters - New Holland PA, US
Philip J. Ehrhart - Narvon PA, US
Richard P Strosser - Akron PA, US
Christopher A. Foster - Winchester, NZ
Assignee:
CNH America LLC - New Holland PA
International Classification:
B60T 8/32
US Classification:
701 93
Abstract:
The apparatus is an electronic speed control for farm machines. A microprocessor is fed data on the tractor engine speed, the tractor ground speed, and the manual speed lever setting, and electronically matches the desired ground speed to the engine speed to prevent stalling the engine. Ground speed is controlled by using the microprocessor to electrically vary a control valve that replaces the usual mechanical linkage between the speed control lever and the hydraulic pumps driving the hydraulic wheel motors.