Peter Warren Estelle

US Patent:

6380861, Apr 30, 2002

Filed:

Jan 4, 2001

Appl. No.:

09/754627

Inventors:

Peter W. Estelle - Norcross GA
Laurence B. Saidman - Duluth GA

Assignee:

Nordson Corporation - Westlake OH

International Classification:

G08B 1700

US Classification:

340588, 340595, 3406913, 34081565, 374152

Abstract:

A temperature monitor for monitoring a temperature of an electrically operated fluid dispenser having a coil mounted adjacent an armature within the dispenser. The coil selectively generates an electromagnetic field to move the armature between opened and closed positions. The temperature monitor includes current measuring apparatus for measuring a current in the coil and a comparator for comparing a measured current value to a desired current value. An indicator provides an indication representing a relationship between the measured current value and the desired current value. The temperature monitor also has different indicators for providing different indications representing different values of the measured current relative to a desired current value.

US Patent:

6401976, Jun 11, 2002

Filed:

Mar 23, 2000

Appl. No.:

09/533347

Inventors:

Peter W. Estelle - Norcross GA
Scott R. Miller - Roswell GA
Laurence B. Saidman - Duluth GA

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B67D 562

US Classification:

222 52, 2221465, 222504, 239135, 335183, 335234, 361161, 392474, 165269

Abstract:

An electrically operated fluid dispenser for dispensing a pattern of viscous fluid onto a substrate during a run mode. The dispenser is turned off and does not dispense the viscous fluid during a standby mode of operation. The dispenser includes a dispenser body having an outlet and an armature disposed in the dispenser body for movement between an opened position allowing a fluid flow from the outlet and a closed position preventing the fluid flow from the outlet. A coil is mounted adjacent the armature and selectively generates an electromagnetic field for moving the armature between the opened and closed positions. A controller includes different apparatus and methods for using the coil as a heater as well as providing other heat transfer devices on the dispensing valve to maintain a constant temperature either, during only the run mode or, during both, the run and the standby modes. The above dispensing valve heating control facilitates a design of an electrically operated fluid dispenser having a body with a fluid passage intersecting first and second sides of the body and a dispensing outlet in fluid communication with the fluid passage. The dispenser includes a heater and has feed member mounted to the first side of the body with one end of the fluid passage in the feed plate fluidly connecting with one end of the fluid passage in the dispenser body.

US Patent:

6460731, Oct 8, 2002

Filed:

Feb 28, 2002

Appl. No.:

10/087086

Inventors:

Peter W. Estelle - Norcross GA
Scott R. Miller - Roswell GA
Laurence B. Saidman - Duluth GA

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B67D 562

US Classification:

222 1, 2221465, 340595, 340664

Abstract:

An electrically operated fluid dispenser for dispensing a pattern of viscous fluid onto a substrate during a run mode. The dispenser is turned off and does not dispense the viscous fluid during a standby mode of operation. The dispenser includes a dispenser body having an outlet and an armature disposed in the dispenser body for movement between an opened position allowing a fluid flow from the outlet and a closed position preventing the fluid flow from the outlet. A coil is mounted adjacent the armature and selectively generates an electromagnetic field for moving the armature between the opened and closed positions. A controller includes different apparatus and methods for using the coil as a heater as well as providing other heat transfer devices on the dispensing valve to maintain a constant temperature either, during only the run mode or, during both, the run and the standby modes.

US Patent:

6480114, Nov 12, 2002

Filed:

Oct 31, 2001

Appl. No.:

09/998877

Inventors:

Peter W. Estelle - Norcross GA

Assignee:

Nordson Corporation - Westlake OH

International Classification:

G08B 2100

US Classification:

340662, 340588, 340595, 3406913, 34081565, 340679, 340584, 340664, 340332, 374152

Abstract:

An apparatus for detecting a high impedance load on an output of a driver circuit having a power switching circuit providing output signals to a coil. Each output signal results from a drive signal that has a waveform comprising a higher magnitude initial peak period followed by a lower magnitude hold period. The driver circuit has a feedback circuit providing a difference signal as a function of a difference between an output signal and a corresponding drive signal. A diagnostic circuit connected to the driver circuit provides a high impedance error signal in response to detecting the difference signal crossing a threshold magnitude during a higher magnitude initial peak period of a drive signal.

US Patent:

6517891, Feb 11, 2003

Filed:

Oct 31, 2000

Appl. No.:

09/702427

Inventors:

Peter W. Estelle - Norcross GA
Laurence B. Saidman - Duluth GA

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B05D 102

US Classification:

427 8, 427424

Abstract:

An apparatus for controlling a speed of a motor of a metering pump providing pressurized fluid at a dispensing gun. The dispensing gun is opened and closed to dispense fluid onto a substrate being carried by a conveyor past the dispensing gun. The apparatus has a pressure control producing first motor speed signals as a function of changing speeds of the conveyor and changing fluid pressures in the dispensing gun when the dispensing gun is open. A flow control produces second motor speed signals as a function of the changing speeds of the conveyor. During changes in conveyor velocity, a motor speed control provides the first motor speed signal to the pump motor which operates the motor at speeds causing the pump to provide fluid to the dispensing gun at pressures changing at a rate tracking a rate of change of the speed of the conveyor. When full conveyor speed is detected, the motor speed control provides the second motor speed signal to the pump motor which operates the motor at speeds determined by the full conveyor speed. In addition, there are methods for generating pressure related and conveyor speed related motor speed signals and automatically switching between those signals as a function of the conveyor speed.

US Patent:

6520382, Feb 18, 2003

Filed:

Feb 28, 2002

Appl. No.:

10/085356

Inventors:

Peter W. Estelle - Norcross GA
Scott R. Miller - Roswell GA
Laurence B. Saidman - Duluth GA
Paul Schmidt - Sugar Hill GA

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B67D 562

US Classification:

2221461, 222504

Abstract:

An electrically operated fluid dispenser for dispensing a pattern of viscous fluid onto a substrate during a run mode. The dispenser is turned off and does not dispense the viscous fluid during a standby mode of operation. The dispenser includes a dispenser body having an outlet and an armature disposed in the dispenser body for movement between an opened position allowing a fluid flow from the outlet and a closed position preventing the fluid flow from the outlet. A coil is mounted adjacent the armature and selectively generates an electromagnetic field for moving the armature between the opened and closed positions. A controller includes different apparatus and methods for using the coil as a heater as well as providing other heat transfer devices on the dispensing valve to maintain a constant temperature either, during only the run mode or, during both, the run and the standby modes. The above dispensing valve heating control facilitates a design of an electrically operated fluid dispenser having a body with a fluid passage intersecting first and second sides of the body and a dispensing outlet in fluid communication with the fluid passage. The dispenser includes a heater and has feed member mounted to the first side of the body with one end of the fluid passage in the feed plate fluidly connecting with one end of the fluid passage in the dispenser body.

US Patent:

6688715, Feb 10, 2004

Filed:

Oct 31, 2001

Appl. No.:

09/999028

Inventors:

Peter W. Estelle - Norcross GA

Assignee:

Nordson Corporation - Westlake OH

International Classification:

G01R 3108

US Classification:

324525, 324 7679, 324656, 361154

Abstract:

An apparatus for detecting a low impedance load on an output of a driver circuit electrically connected to a coil of a fluid dispensing gun. The driver circuit provides a plurality of output signals to the coil in response to respective drive signals. Each drive signal has a waveform commanding the dispensing gun to open, and the waveform has a higher magnitude initial peak period followed by a lower magnitude hold period. A feedback circuit provides a difference signal as a function of a difference between each drive signal and a feedback of a corresponding output signal. A diagnostic circuit is connected to the driver circuit and provides an error signal representing a low impedance error as a function of the difference signal crossing a threshold signal magnitude during an occurrence of the peak period of the drive signal.

US Patent:

6712906, Mar 30, 2004

Filed:

Jan 7, 2003

Appl. No.:

10/337463

Inventors:

Peter W. Estelle - Norcross GA
Laurence B. Saidman - Duluth GA

Assignee:

Nordson Corporation - Westlake OH

International Classification:

B05C 502

US Classification:

118683, 118684, 118686, 118324, 118663, 222 63, 156578

Abstract:

An apparatus for controlling a speed of a motor of a metering pump providing pressurized fluid at a dispensing gun. The dispensing gun is opened and closed to dispense fluid onto a substrate being carried by a conveyor past the dispensing gun. The apparatus has a pressure control producing first motor speed signals as a function of changing speeds of the conveyor and changing fluid pressures in the dispensing gun when the dispensing gun is open. A flow control produces second motor speed signals as a function of the changing speeds of the conveyor. During changes in conveyor velocity, a motor speed control provides the first motor speed signal to the pump motor which operates the motor at speeds causing the pump to provide fluid to the dispensing gun at pressures changing at a rate tracking a rate of change of the speed of the conveyor. When full conveyor speed is detected, the motor speed control provides the second motor speed signal to the pump motor which operates the motor at speeds determined by the full conveyor speed. In addition, there are methods for generating pressure related and conveyor speed related motor speed signals and automatically switching between those signals as a function of the conveyor speed.