Thomas J. Hajek JR.

Person

Lockport, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Hydraulic system with a dynamic seal
- Patent number 9,651,067
- Issue date May 16, 2017
- Caterpillar Inc.
- Matthew J. Beschorner
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Edge filter assembly
- Patent number 7,210,585
- Issue date May 1, 2007
- Caterpillar Inc.
- Thomas J Hajek
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
System and method for starting an engine
- Patent number 6,935,114
- Issue date Aug 30, 2005
- Caterpillar Inc.
- Thomas J. Hajek
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Dual cylinder circuit having a joystick with intuitive control
- Patent number 6,722,258
- Issue date Apr 20, 2004
- Caterpillar Inc.
- Thomas J. Hajek
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Independent and regenerative mode fluid control system
- Patent number 6,715,403
- Issue date Apr 6, 2004
- Caterpillar Inc.
- Thomas J. Hajek
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Independent and regenerative mode fluid control system
- Patent number 6,701,822
- Issue date Mar 9, 2004
- Caterpillar Inc.
- Thomas J. Hajek
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic system with an actuator having independent meter-in meter...
- Patent number 6,691,604
- Issue date Feb 17, 2004
- Caterpillar Inc.
- Thomas J. Hajek
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
System for definable single lever control shift pattern joint
- Patent number 6,631,653
- Issue date Oct 14, 2003
- Caterpillar Inc.
- Chad T. Brickner
- G05 - CONTROLLING REGULATING
Information Patent Grant
Compact pump or motor with internal swash plate
- Patent number 6,572,344
- Issue date Jun 3, 2003
- Caterpillar Inc.
- Thomas J. Hajek
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Dual cylinder circuit having a joystick with intuitive control
- Patent number 6,546,957
- Issue date Apr 15, 2003
- Caterpillar Inc.
- Thomas J. Hajek
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic ride control system
- Patent number 6,357,230
- Issue date Mar 19, 2002
- Caterpillar Inc.
- Michael A. A'Hearn
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Ride control
- Patent number 6,321,534
- Issue date Nov 27, 2001
- Caterpillar Inc.
- Michael A. A'Hearn
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Control system providing a float condition for a hydraulic cylinder
- Patent number 6,293,181
- Issue date Sep 25, 2001
- Caterpillar Inc.
- Thomas J. Hajek
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Off-setting rate of pressure rise in a fluid system
- Patent number 6,199,378
- Issue date Mar 13, 2001
- Caterpillar Inc.
- James A. Aardema
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Fluid control system with float capability
- Patent number 6,186,044
- Issue date Feb 13, 2001
- Caterpillar Inc.
- Thomas J. Hajek
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Fluid control system having float control
- Patent number 6,173,639
- Issue date Jan 16, 2001
- Caterpillar Inc.
- Michael A. A'Hearn
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Fluid control system with regeneration
- Patent number 6,161,467
- Issue date Dec 19, 2000
- Caterpillar Inc.
- Michael A. A'Hearn
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Poppet valve control with sealing element providing improved load d...
- Patent number 6,089,528
- Issue date Jul 18, 2000
- Caterpillar Inc.
- Thomas J. Hajek
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Poppet with a flow increasing element for limiting movement thereof...
- Patent number 6,047,944
- Issue date Apr 11, 2000
- Caterpillar Inc.
- Thomas J. Hajek
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Valve interface having mismatched radii
- Patent number 5,950,989
- Issue date Sep 14, 1999
- Caterpillar Inc.
- Thomas J. Hajek
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Integrated electrohydraulic actuator
- Patent number 5,906,351
- Issue date May 25, 1999
- Caterpillar Inc.
- James A. Aardema
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Hydraulic control valve for fluid metering and cylinder protection
- Patent number 5,709,368
- Issue date Jan 20, 1998
- Caterpillar Inc.
- Thomas J. Hajek
- G05 - CONTROLLING REGULATING
Information Patent Grant
Resettable valve spool with kick-out member
- Patent number 4,334,553
- Issue date Jun 15, 1982
- Caterpillar Tractor Co.
- Thomas J. Hajek
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Draining apparatus for a fluid reservoir
- Patent number 4,183,498
- Issue date Jan 15, 1980
- Caterpillar Tractor Co.
- Thomas J. Hajek
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Draining apparatus for a fluid reservoir
- Patent number 4,155,534
- Issue date May 22, 1979
- Caterpillar Tractor Co.
- Thomas J. Hajek
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
HYDRAULIC SYSTEM WITH A DYNAMIC SEAL
- Publication number 20140034135
- Publication date Feb 6, 2014
- Caterpillar Inc.
- Matthew J. Beschorner
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
Hydraulic system with an actuator having independent meter-in meter...
- Publication number 20060027092
- Publication date Feb 9, 2006
- Caterpillar Inc.
- Thomas J. Hajek
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
Edge filter assembly
- Publication number 20040108264
- Publication date Jun 10, 2004
- Thomas J. Hajek
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Filter
- Publication number 20040097358
- Publication date May 20, 2004
- Thomas J. Hajek
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
System and method for starting an engine
- Publication number 20030121265
- Publication date Jul 3, 2003
- Caterpillar Inc.
- Thomas J. Hajek
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Dual cylinder circuit having a joystick with intuitive control
- Publication number 20030121551
- Publication date Jul 3, 2003
- Thomas J. Hajek
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Independent and regenerative mode fluid control system
- Publication number 20030106423
- Publication date Jun 12, 2003
- Shin Caterpillar Mitsubishi Ltd.
- Thomas J. Hajek
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Independent and regenerative mode fluid control system
- Publication number 20030106422
- Publication date Jun 12, 2003
- Caterpillar Inc.
- Thomas J. Hajek
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
COMPACT PUMP OR MOTOR WITH INTERNAL SWASH PLATE
- Publication number 20030099551
- Publication date May 29, 2003
- Thomas J. Hajek
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Dual cylinder circuit having a joystick with intuitive control
- Publication number 20020074045
- Publication date Jun 20, 2002
- Thomas J. Hajek
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
System for definable single lever control shift pattern joint
- Publication number 20020066329
- Publication date Jun 6, 2002
- Chad T. Brickner
- G05 - CONTROLLING REGULATING

Thomas J. Hajek JR.

Person

Patents Grantslast 30 patents

Hydraulic system with a dynamic seal

Edge filter assembly

System and method for starting an engine

Dual cylinder circuit having a joystick with intuitive control

Independent and regenerative mode fluid control system

Independent and regenerative mode fluid control system

Hydraulic system with an actuator having independent meter-in meter...

System for definable single lever control shift pattern joint

Compact pump or motor with internal swash plate

Dual cylinder circuit having a joystick with intuitive control

Hydraulic ride control system

Ride control

Control system providing a float condition for a hydraulic cylinder

Off-setting rate of pressure rise in a fluid system

Fluid control system with float capability

Fluid control system having float control

Fluid control system with regeneration

Poppet valve control with sealing element providing improved load d...

Poppet with a flow increasing element for limiting movement thereof...

Valve interface having mismatched radii

Integrated electrohydraulic actuator

Hydraulic control valve for fluid metering and cylinder protection

Resettable valve spool with kick-out member

Draining apparatus for a fluid reservoir

Draining apparatus for a fluid reservoir

Patents Applicationslast 30 patents

HYDRAULIC SYSTEM WITH A DYNAMIC SEAL

Hydraulic system with an actuator having independent meter-in meter...

Edge filter assembly

Filter

System and method for starting an engine

Dual cylinder circuit having a joystick with intuitive control

Independent and regenerative mode fluid control system

Independent and regenerative mode fluid control system

COMPACT PUMP OR MOTOR WITH INTERNAL SWASH PLATE

Dual cylinder circuit having a joystick with intuitive control

System for definable single lever control shift pattern joint