Harnischfeger Technologies, Inc.

United States of America

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IPC Class
E02F 9/20 - DrivesControl devices 5
E02F 3/43 - Control of dipper or bucket positionControl of sequence of drive operations 4
E02F 3/40 - DippersBuckets 3
E02F 3/407 - DippersBuckets with ejecting device 2
E02F 3/42 - Drives for dippers, buckets, dipper-arms or bucket-arms 2
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NICE Class
07 - Machines and machine tools 1
09 - Scientific and electric apparatus and instruments 1

1.

METHODS AND SYSTEMS FOR DETECTING HEAVY MACHINE WEAR

      
Application Number US2016061590
Publication Number 2017/083691
Status In Force
Filing Date 2016-11-11
Publication Date 2017-05-18
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Nicoson, Richard
  • Popp, James, R.
  • Schlegel, Daniel
  • Pomerenke, Keith

Abstract

Methods and systems for detecting heavy machine wear. One system includes a heavy machine tooth of an industrial machine having a working end and a mounting end opposite the working end. The system also includes a wear indicator included in the tooth. The wear indicator includes a conductive tip, a conductive outer body extending along at least a length of the tooth, a conductive inner core positioned within the outer body, and insulating material positioned between the outer body and the inner core. The conductive tip is positioned between the working end of the tooth and the outer body and electrically couples the outer body and the inner core to form an electric circuit. The system also includes a transmitter included in the tooth. The transmitter transmits a state of the electric circuit.

IPC Classes  ?

  • E02F 9/28 - Small metalwork for digging elements, e.g. teeth
  • E02F 9/26 - Indicating devices

2.

COMBUSTOR FOR HEATING OF AIRFLOW ON A DRILL RIG

      
Application Number US2016047604
Publication Number 2017/031346
Status In Force
Filing Date 2016-08-18
Publication Date 2017-02-23
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor Haworth, Samuel, F.

Abstract

A blasthole drill rig includes a base, a drill tower extending from the base, a drill pipe coupled to the drill tower, a drill bit coupled to a lower end of the drill pipe, an air compressor that directs compressed air through the drill pipe, and a heating element that heats the compressed air.

IPC Classes  ?

  • E21B 7/02 - Drilling rigs characterised by means for land transport, e.g. skid mounting or wheel mounting
  • E21B 3/02 - Surface drives for rotary drilling
  • E21B 41/00 - Equipment or details not covered by groups

3.

SYSTEMS AND METHODS FOR CONTROLLING MACHINE GROUND PRESSURE AND TIPPING

      
Application Number US2016040432
Publication Number 2017/004389
Status In Force
Filing Date 2016-06-30
Publication Date 2017-01-05
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Lee, Moo, Young
  • Hren, William, J.
  • Pedretti, Ethan, J.
  • Linstroth, Michael, J.
  • Voelz, Nicholas, R.

Abstract

Methods and systems for operating an industrial machine. One system includes a controller that includes an electronic processor. The electronic processor is configured to calculate an eccentricity of a center of gravity of the industrial machine with respect to a center of a bearing propelling the industrial machine and calculate a ground pressure associated with the bearing based on the eccentricity of the center of gravity. The electronic processor is also configured to set a maximum torque applied by an actuator included in the industrial machine to a value less than an available maximum torque based on the eccentricity of the center of gravity and the ground pressure.

IPC Classes  ?

  • E02F 3/34 - DredgersSoil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, e.g. dippers, buckets with bucket-arms directly pivoted on the frames of tractors or self-propelled machines
  • E02F 9/20 - DrivesControl devices

4.

INDUSTRIAL MACHINE HAVING A POWER CONTROL SYSTEM

      
Application Number US2016019319
Publication Number 2016/138109
Status In Force
Filing Date 2016-02-24
Publication Date 2016-09-01
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor Taylor, Wesley, P.

Abstract

A system includes a first industrial machine and a second industrial machine. The system also includes a power distribution system configured to provide power to the first industrial machine and the second industrial machine. The first industrial machine includes a first power control system configured to monitor power usage of the first industrial machine, and transmit power usage information of the first industrial machine to the second industrial machine. The second industrial machine includes a second power control system configured to monitor power usage of the second industrial machine, receive the power usage information from the first industrial machine, and control power usage of the second industrial machine based on the power usage information received from the first industrial machine.

IPC Classes  ?

  • H02J 3/12 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
  • G06Q 50/06 - Energy or water supply

5.

RAISED COUNTERWEIGHT FOR A MINING MACHINE

      
Application Number US2016016863
Publication Number 2016/127114
Status In Force
Filing Date 2016-02-05
Publication Date 2016-08-11
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor Lee, Mooyoung

Abstract

A mining shovel includes a base, a revolving frame coupled to the base and rotatable about an axis, a boom pivotally coupled to the revolving frame, a handle coupled to the boom, and a dipper coupled to the handle. The dipper has a dipper door, and is located at a front end of the shovel. A counterweight having a center of gravity is disposed at the rear end of the shovel to balance the shovel, and is supported by a truss structure that is coupled to the revolving frame, such that the center of gravity is disposed above the revolving frame.

IPC Classes  ?

6.

LINER SYSTEM FOR A DIPPER

      
Application Number US2014060346
Publication Number 2015/057609
Status In Force
Filing Date 2014-10-14
Publication Date 2015-04-23
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Voelz, Nicholas, R.
  • Nicoson, Richard

Abstract

A mining machine includes a boom, a handle coupled to the boom, and a dipper coupled to the handle. The mining machine further includes a liner system coupled to the dipper. The liner system includes a first guide member and a second guide member coupled to a surface of the dipper, wherein the first and second guide members and the surface of the dipper define a channel extending along the dipper, and wherein the liner system further includes an insert disposed at least partially within the channel that is inhibited from moving away from the surface of the dipper by a portion of the first guide member.

IPC Classes  ?

7.

A SYSTEM AND METHOD FOR MONITORING A BRAKE STEM OF A MINING MACHINE

      
Application Number US2014029651
Publication Number 2014/153213
Status In Force
Filing Date 2014-03-14
Publication Date 2014-09-25
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Rikkola, Michael, J.
  • Gudur, Shashikiran
  • Bhushan, Anubhaw

Abstract

A mining machine including a brake operable to halt motion of a component of the mining machine; a first sensor operable to sense a characteristic of the brake to generate brake data; a second sensor operable to sense motion of the component of the mining machine to generate motion data; and a controller. The controller is operable to receive the brake data and the motion data, analyze the brake data and the motion data according to a brake set model and a brake release model, and output an alert in response to an issue with the analyzed brake data or the analyzed motion data.

IPC Classes  ?

  • B60Q 1/00 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor

8.

SYSTEMS AND METHODS FOR MONITORING A FLUID SYSTEM OF A MINING MACHINE

      
Application Number US2014016946
Publication Number 2014/127368
Status In Force
Filing Date 2014-02-18
Publication Date 2014-08-21
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Haisler, Michael
  • Gudur, Shashi
  • Bhushan, Anubhaw

Abstract

A method of monitoring a fluid system of a mining machine. The method including sensing a pressure level of a fluid in the fluid system of the mining machine to generate pressure level data; analyzing the pressure level data to detect pressure level deviations; determining at least one selected from the group of when a frequency of the pressure level deviations exceeds a predetermined frequency, and when the fluid pressure level fails to reach a threshold within a predetermined reaction time period; and outputting an alert in response to the determination.

IPC Classes  ?

  • F16N 29/04 - Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditionsUse of devices responsive to conditions in lubricating arrangements or systems enabling a warning to be givenSpecial means in lubricating arrangements or systems providing for the indication or detection of undesired conditionsUse of devices responsive to conditions in lubricating arrangements or systems enabling moving parts to be stopped

9.

CONDUIT SUPPORT STRUCTURE FOR AN INDUSTRIAL MACHINE

      
Application Number US2014015786
Publication Number 2014/124436
Status In Force
Filing Date 2014-02-11
Publication Date 2014-08-14
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Maki, Douglas
  • Pedretti, Ethan
  • Akanda, Anab
  • Gaska, Jason
  • Jones, Christopher
  • Loew, Matthew
  • Dretzka, Andrew, P.
  • Knuth, Jason
  • Thiel, Brian

Abstract

An industrial machine includes a frame having a base and a boom, an arm movably coupled to the boom, an attachment, a conduit, a first member, and a second member. The boom has a first end coupled to the base and a second end opposite the first end. The arm includes a first end and a second end. The attachment is coupled to the first end of the arm. The conduit extends from the frame to the arm. The first member is pivotably coupled to the frame and supports a first portion of the conduit as the arm moves relative to the boom. The second member is pivotably coupled between the first member and the arm, and supports a second portion of the conduit as the arm moves relative to the boom.

IPC Classes  ?

10.

ENERGY MANAGEMENT SYSTEM FOR MACHINERY PERFORMING A PREDICTABLE WORK CYCLE

      
Application Number US2013061192
Publication Number 2014/047564
Status In Force
Filing Date 2013-09-23
Publication Date 2014-03-27
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Wutke, Joe
  • Dorsett, William, A.
  • Barr, Marcus, N.
  • Sorgee, Jason

Abstract

Industrial machines and methods of operating the same. One industrial machine includes at least one controller that is configured to (1) detect an occurrence of a regenerative work cycle segment within a repetitive work cycle performed by the industrial machine and including a plurality of work cycle segments and (2) modify operation of at least one power source included in the industrial machine for the regenerative work cycle segment (i.e., prior to and/or during the regenerative work cycle segment).

IPC Classes  ?

11.

LUBRICATION PUMP

      
Application Number US2013049747
Publication Number 2014/011650
Status In Force
Filing Date 2013-07-09
Publication Date 2014-01-16
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Gross, Matthew, L.
  • Colwell, Joseph, J.

Abstract

A dipper assembly for a mining shovel includes a dipper body, a dipper door pivotably coupled to the dipper body, an arm, a housing coupled to one of the body and the door, and a piston. The arm includes a first end pivotably coupled to the body and a second end pivotably coupled to the door. The movement of the door relative to the body drives the arm to pivot relative to the body. The housing includes an inlet in fluid communication with a fluid source, an outlet, and a cylinder partially defining a pump chamber in fluid communication with the inlet and the outlet. The piston is movable within the cylinder and biased in a first direction. The pivoting movement of the arm causes the piston to move in a second direction opposite the first direction. The movement of the piston changes a volume of the pump chamber.

IPC Classes  ?

  • E02F 3/407 - DippersBuckets with ejecting device

12.

DIPPER LATCH MECHANISM

      
Application Number US2013049749
Publication Number 2014/011651
Status In Force
Filing Date 2013-07-09
Publication Date 2014-01-16
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Gross, Matthew, L.
  • Colwell, Joseph, J.

Abstract

A dipper assembly includes a body defining an outer surface and an opening, a door pivotably coupled to the body, and a latch mechanism releasably securing the door relative to the body. The door is pivotable between a closed position in which the door is positioned adjacent the opening and an open position in which the door is positioned away from the opening. The latch mechanism includes a latchkeeper and a latch member engaging the latchkeeper. The latch member is coupled to one of the body and the door and the latchkeeper is coupled to the other of the body and the door. The latchkeeper includes an end surface and a stop member coupled to the end surface. The stop member engages the one of the body and the door when the door is in the closed position. The stop member is extendable relative to the end surface.

IPC Classes  ?

  • E02F 3/30 - DredgersSoil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam

13.

OVERHEAD VIEW SYSTEM FOR A SHOVEL

      
Application Number US2013034664
Publication Number 2013/149179
Status In Force
Filing Date 2013-03-29
Publication Date 2013-10-03
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Hargrave, Jr., Brian, K.
  • Reiland, Matthew, J.
  • Munoz, Ryan, A.
  • Koxlien, Steven
  • Sisneros, Paul

Abstract

Systems and methods for providing an overview-head view of an industrial machine, such as a shovel. One system includes at least one processor configured to receive data from at least one sensor installed on the shovel relating to the area around the shovel, identify a plurality of planes based on the data, determine if the plurality of planes are positioned in a predetermined configuration associated with a haul truck, and if the plurality of planes are positioned in the predetermined configuration, superimpose the plurality of planes on an overhead-view image of the shovel and the area.

IPC Classes  ?

  • G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
  • G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

14.

AUTOMATED CONTROL OF DIPPER SWING FOR A SHOVEL

      
Application Number US2013032769
Publication Number 2013/138801
Status In Force
Filing Date 2013-03-18
Publication Date 2013-09-19
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Linstroth, Michael
  • Colwell, Joseph
  • Emerson, Mark

Abstract

Systems and methods for compensating dipper swing control. One method includes, with at least one processor, determining a direction of compensation opposite a current swing direction of the dipper and applying the maximum available swing torque in the direction of compensation when an acceleration of the dipper is greater than a predetermined acceleration value. The method can also include determining a current state of the shovel and performing the above steps when the current state of the shovel is a swing-to-truck state or a return-to-tuck state. When the current state of the shovel is a dig-state, the method can include limiting the maximum available swing torque and allowing, with the at least one processor, swing torque to ramp up to the maximum available swing torque over a predetermined period of time when dipper is retracted to a predetermined crowd position.

IPC Classes  ?

  • G06F 17/00 - Digital computing or data processing equipment or methods, specially adapted for specific functions

15.

LATCH SYSTEM FOR A POWER SHOVEL DIPPER DOOR

      
Application Number US2013028136
Publication Number 2013/130693
Status In Force
Filing Date 2013-02-28
Publication Date 2013-09-06
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor Nicoson, Richard

Abstract

A power shovel dipper door includes a hollow dipper body defining a first end and a second end opposite the first end, a plurality of dipper teeth coupled to the first end, a dipper door pivotally mounted at the second end, and a latch system for releasably securing the dipper door in a closed position. The latch system includes a latch bar and a latch keeper. At least one of the latch bar and latch keeper is movable between a first position and a second position. The latch keeper is engaged by the latch bar when at least one of the latch bar and latch keeper is in the first position. The latch system further includes removable inserts positioned proximate an interface where the latch bar and latch keeper are capable of engaging each other. One or more of the removable inserts includes a tool steel.

IPC Classes  ?

16.

METAL TOOTH DETECTION AND LOCATING

      
Application Number US2012052798
Publication Number 2013/033164
Status In Force
Filing Date 2012-08-29
Publication Date 2013-03-07
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor Miller, Lee

Abstract

A machine tooth for heavy equipment can be monitored by coupling an RFID tag to the heavy machine tooth and positioning an RFID reader to read the RFID tag. The RFID reader provides an indication that the heavy machine tooth is separated from the heavy machine. The heavy machine tooth is configured, for example, to be mounted on a bucket of a heavy machine.

IPC Classes  ?

  • G08B 1/08 - Systems for signalling characterised solely by the form of transmission of the signal using electric transmission

17.

CONTROLLING A DIGGING OPERATION OF AN INDUSTRIAL MACHINE

      
Application Number US2011049975
Publication Number 2012/148437
Status In Force
Filing Date 2011-08-31
Publication Date 2012-11-01
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Colwell, Joseph
  • Hren, William
  • Emerson, Mark
  • Linstroth, Michael

Abstract

Systems, methods, devices, and computer readable media for controlling a digging operation of an industrial machine. A method includes determining a hoist bail pull associated with the industrial machine, determining a crowd torque limit value for a crowd drive based on the determined hoist bail pull of the industrial machine, and setting a crowd torque limit of the crowd drive to the crowd torque limit value to limit a torque associated with a crowd motor to the crowd torque limit value.

IPC Classes  ?

  • E02F 9/20 - DrivesControl devices
  • E02F 3/43 - Control of dipper or bucket positionControl of sequence of drive operations
  • E02F 3/42 - Drives for dippers, buckets, dipper-arms or bucket-arms

18.

CONTROLLING A DIGGING OPERATION OF AN INDUSTRIAL MACHINE

      
Application Number US2011049946
Publication Number 2012/148436
Status In Force
Filing Date 2011-08-31
Publication Date 2012-11-01
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Colwell, Joseph
  • Hren, William
  • Wendt, David
  • Linstroth, Michael

Abstract

Systems, methods, devices, and computer readable media for controlling a digging operation of an industrial machine that includes a dipper and a crowd drive. A method includes determining an acceleration associated with the industrial machine, determining a crowd retract factor based on the acceleration, comparing the crowd retract factor to a threshold crowd retract factor, setting a crowd speed reference and a crowd retract torque for the crowd drive for a period of time based on the comparison of the crowd retract factor to the threshold crowd retract factor.

IPC Classes  ?

  • E02F 9/20 - DrivesControl devices
  • E02F 3/43 - Control of dipper or bucket positionControl of sequence of drive operations
  • E02F 3/42 - Drives for dippers, buckets, dipper-arms or bucket-arms

19.

CONTROLLING A DIGGING OPERATION OF AN INDUSTRIAL MACHINE

      
Application Number US2011050024
Publication Number 2012/148438
Status In Force
Filing Date 2011-08-31
Publication Date 2012-11-01
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Colwell, Joseph
  • Powers, William
  • Burant, John

Abstract

Systems, methods, devices, and computer readable media for controlling the operation of an industrial machine including one or more components. A method of controlling the industrial machine includes determining a position of at least one of the one or more components of the industrial machine during a digging operation, determining a hoist bail pull setting based on the position of the at least one of the one or more components and a relationship between component position and hoist bail pull, and setting a level of hoist bail pull to the hoist bail pull setting. The level of hoist bail pull early in the digging operation is greater than the level of hoist bail pull later in the digging operation.

IPC Classes  ?

  • E02F 9/20 - DrivesControl devices
  • E02F 3/43 - Control of dipper or bucket positionControl of sequence of drive operations

20.

HYBRID ELECTRIC SHOVEL

      
Application Number US2011022544
Publication Number 2012/102713
Status In Force
Filing Date 2011-01-26
Publication Date 2012-08-02
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor Emerson, Mark

Abstract

A hybrid electric shovel. The hybrid electric shovel includes a main transformer, a first and second converter, a first and second DC motor, a first and second active front end, a first and second motion inverter, and a first and second AC motor. The first converter is coupled to a first secondary winding, and the second converter is coupled to a second secondary winding. The first DC motor is coupled to the first converter, and the second DC motor is coupled to the second converter. The first active front end is coupled to the first secondary winding and to the first motion inverter. The second active front end is coupled to the second secondary winding and to the second motion inverter. The first AC motor is coupled to the first motion inverter, and the second AC motor is coupled to the second motion inverter.

IPC Classes  ?

  • H02P 4/00 - Arrangements specially adapted for regulating or controlling the speed or torque of electric motors that can be connected to two or more different electric power supplies

21.

CYCLE DECOMPOSITION ANALYSIS FOR REMOTE MACHINE MONITORING

      
Application Number US2011036296
Publication Number 2011/143458
Status In Force
Filing Date 2011-05-12
Publication Date 2011-11-17
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Rikkola, Michael
  • Daniel, Donald
  • Daniel, Kenneth

Abstract

Methods for decomposing event information for a machine are described. In one aspect, a method includes receiving event data identifying events associated with a machine on a first communications channel, and receiving trend data for the machine associated with the identified events on a second communications channel separate from the first communications channel. Systems and machine-readable media are also described.

IPC Classes  ?

  • G06F 15/173 - Interprocessor communication using an interconnection network, e.g. matrix, shuffle, pyramid, star or snowflake

22.

REMOTE MONITORING OF MACHINE ALARMS

      
Application Number US2011036303
Publication Number 2011/143462
Status In Force
Filing Date 2011-05-12
Publication Date 2011-11-17
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Rikkola, Michael
  • Daniel, Kenneth

Abstract

Methods for monitoring a machine are described. In one aspect, a method includes receiving information on a plurality of events associated with the machine, determining a severity value for at least one event of the plurality of events, the severity value based on at least one of a safety value, a hierarchy value, a time-to-repair value, and a cost-of-repair value, and outputting an alert includes the severity value if the severity value exceeds a predetermined threshold associated with the at least one event. Systems and machine-readable media are also described.

IPC Classes  ?

  • G06F 11/00 - Error detectionError correctionMonitoring

23.

PREDICTIVE ANALYSIS FOR REMOTE MACHINE MONITORING

      
Application Number US2011036287
Publication Number 2011/143455
Status In Force
Filing Date 2011-05-12
Publication Date 2011-11-17
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Rikkola, Micahel
  • Bhushan, Anubhaw
  • Gudur, Shashikiran
  • Raba, Brian

Abstract

Methods for predicting a machine event are described. In one aspect, a method includes receiving data for current events for the machine, and determining whether the data for the current events is within operational limits. The method also includes, when the data for the current events is within operational limits, determining, using a predetermined model, whether an anomaly exists, and generating an alert including information on the anomaly when the anomaly exists. Systems and machine-readable media are also described.

IPC Classes  ?

24.

DIPPER DOOR LATCH WITH LOCKING MECHANISM

      
Application Number US2011020572
Publication Number 2011/085243
Status In Force
Filing Date 2011-01-07
Publication Date 2011-07-14
Owner HARNISCHFEGER TECHNOLOGIES, INC. (USA)
Inventor
  • Hren, William, J.
  • Colwell, Joseph, J.
  • Schwake, Jeffrey, S.
  • Kearsley, Bruce, P.

Abstract

A dipper (38) including a dipper door (86) and an impact actuated jaw (104) having a "C" shape defining a lip (108) and a chin (112). The jaw (108) is rotatably mounted on the dipper door (86) for rotation between a door-opened position and a door-closed position and positioned so that when the jaw (104) is in the door-opened position, the jaw chin (112) can be impacted by the dipper body (62) when the door (86) pivots to the door-closed position. The dipper (38) also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar (164) pivotally attached to the door (86), and another bar pivotally connected to and extending between each of the one bar (86) and the latch.

IPC Classes  ?

  • E02F 3/407 - DippersBuckets with ejecting device
  • E02F 3/43 - Control of dipper or bucket positionControl of sequence of drive operations
  • E02F 3/40 - DippersBuckets

25.

MIRACLE HITCH

      
Application Number 028179800
Status Registered
Filing Date 1964-04-21
Registration Date 1964-12-31
Owner Harnischfeger Technologies, Inc., (a Delaware Corporation), (USA)
NICE Classes  ?
  • 07 - Machines and machine tools
  • 09 - Scientific and electric apparatus and instruments

Goods & Services

(1) Control mechanism for heavy excavating equipment, namely; draft and lifting connections for dragline buckets.