Caterpillar SARL Patent applications |
Patent application number | Title | Published |
20160060842 | SYSTEM FOR CONTROLLING LIFT PATH OF MACHINE WORK TOOL - A skid steer loader including a linkage actuation system and a control system for controlling a lift path of a work tool is disclosed. The linkage actuation system includes a first arm, a second arm, and the work tool to contact a work surface. The control system includes a first actuator between a frame and the first arm, a second actuator between the first arm and the second arm, and a third actuator between the second arm and the work tool, for moving the first arm, the second arm, and the work tool about a first pivotal axis, a second pivotal axis, and a third pivotal axis, respectively. The controller controls the actuation of two of the first actuator, the second actuator, and the third actuator for moving the work tool along a lift path, from a plurality of lift paths, based on an operator's selection. | 03-03-2016 |
20160053459 | Combination Cab Mounting Bracket and Lift Arm Stop for Skid Steer Machine - A skid steer machine is provided including a frame and a cab supported on the frame. A lift arm assembly includes a pair of lift arms each of which is pivotally supported on the frame at the rear end thereof for movement between a raised position and a lowered position. A pair of combination cab mounting bracket and lift arm stops are provided with each combination cab mounting bracket and lift arm stop being supported on the frame adjacent the forward end of the frame and adjacent a respective lateral side of the frame. Each combination cab mounting bracket and lift arm stop includes a cab mount surface and a lift arm stop surface with the lift arm stop surface being arranged outwardly and upwardly relative to the cab mount surface. | 02-25-2016 |
20160040389 | SERVICEABLE ANTI-SKID STRUCTURE - An anti-skid structure is provided. The anti-skid structure includes a plate having a first surface, a second surface, and a plurality of apertures extending from the first surface to the second surface. The anti-skid structure includes a plurality of fasteners fastened to the plate through the plurality of apertures. The plurality of fasteners includes a first member and a second member. The first member having a head placed on the first surface, and a body extending through an aperture. The body includes a locking portion structured and arranged to prevent a rotation of the first member relative to the plate. The second member is coupled to a threaded portion of the body and is positioned on the second surface. The second member is configured to fasten the plurality of fasteners to the plate using the threaded portion. Further, each head of the plurality of fasteners have a predetermined shape. | 02-11-2016 |
20160039345 | ANTI-SKID STRUCTURE - An anti-skid structure is provided. The anti-skid structure includes a mounting plate having a surface, a first length and a second length, with a plurality of projections embossed on the surface of the mounting plate. Each of the plurality of projections includes a frustum structure, and a cylindrical structure on a top of the frustum structure. A distance between each projection of the plurality of projections, and an adjacent projection of the plurality of projections, along each of the first direction and the second direction is 44 mm. | 02-11-2016 |
20150323071 | Braking System - The present disclosure relates to a vehicle having a braking system and a method of engaging the braking system. The braking system engages a brake mechanism as a waiting brake. The vehicle has a dual function device which is configured such that when the dual function device is activated when the vehicle transmission system is in a drive mode, the transmission system is maintained in that drive mode, and when the dual function device is activated when the transmission system is in the neutral mode, the brake mechanism is engaged. | 11-12-2015 |
20150323070 | BRAKING SYSTEM - The present disclosure relates to a braking system and, more particularly, to a braking system for engaging a brake mechanism as a waiting brake for a load carrying vehicle. The braking system utilises an electrohydraulic brake control mechanism comprising at least one automatic retard control valve to engage the brake mechanism, which is activated by a dual function apparatus which also controls another operation of the vehicle. | 11-12-2015 |
20150323069 | Braking System - The present disclosure relates to a method of disengaging a brake mechanism used as a waiting brake for a load carrying vehicle. In a vehicle comprising an automatic transmission system having at least one drive mode and a neutral mode, changing the mode of the transmission system from neutral mode to a drive mode automatically disengages the brake mechanism. | 11-12-2015 |
20150321648 | Braking System - The present disclosure relates to a braking system and, more particularly, to a braking system for engaging a brake mechanism as a waiting brake for a load carrying vehicle. The braking system comprises first and second brake mechanisms. A controller is configured to control the operation of the second brake mechanism such that, if a predetermined fault condition is determined whilst the first brake mechanism is engaged, the controller automatically engages the second brake mechanism. | 11-12-2015 |
20150240451 | Method For Controlling A Machine - The present disclosure is related to a method of controlling a machine having an engine, a hydraulic pump and an operator input device. The method includes storing operation data corresponding to multiple operating parameters of the machine over a predetermined number of working cycles. The operation data is compared with respective predetermined ranges of operating parameters. Further, the machine in controlled in a normal mode of operation if the stored operation data lies outside the respective predetermined ranges. Further, the machine is controlled in an override mode if the stored operation data lies within the predetermined ranges. In the override mode, the machine is controlled based on estimated values of the operating parameters. Further, the method includes switching to the normal mode if a current operator input lies outside a predetermined range of the operator input. | 08-27-2015 |
20150233090 | TURRET ASSEMBLY FOR MACHINES - A turret assembly for supporting a moveable boom assembly is disclosed. The turret assembly includes a base assembly structured and arranged for selective rotation. The turret assembly further includes a swing motor being attached to the base assembly. The swing motor has a housing portion projecting outward from the base assembly in a direction towards the boom assembly. The turret assembly further includes a mount assembly having a forward attachment portion, a rearward attachment portion and a hinge portion defined therebetween. The hinge portion of the mount assembly is configured to support the moveable boom assembly coupled thereto. The forward attachment portion and the hinge portion are structured and arranged to define a recess pocket. The swing motor is at least partially disposed within the recess pocket. | 08-20-2015 |
20150097417 | HYDRAULIC ACCUMULATOR PRE-CHARGE PRESSURE DETECTION FOR HYDRAULIC BRAKING SYSTEM - A system and method for detecting a pre-charge pressure of a hydraulic braking system are disclosed. A controller receives pressure readings from a pressure sensor indicative of the pressure of a hydraulic brake accumulator or the lower pressure of more than one accumulator. In response to fluid being provided to the hydraulic accumulator, the controller determines a first rate of pressure change, a second rate of pressure change different than the first rate, and a transition pressure between the first and second rates. The controller determines an approximate pre-charge pressure of the hydraulic brake accumulator based on the transition pressure. A warning can be provided to the operator or another when the determined pre-charge pressure is lower than a reference pressure. | 04-09-2015 |
20150066290 | INDICATION SYSTEM FOR A MACHINE - A light indicator system for a machine is disclosed. The light indicator system includes a single light assembly positioned on an exterior facing surface of an operator cab of the machine. The light assembly is positioned such that it is viewable from outside the machine. The light indicator system also includes a payload monitoring module configured to generate a signal indicative of an amount of payload on the machine. The light indicator system further includes a transmission module configured to generate a signal indicative of a mode of operation of the machine. The light indicator system includes a controller communicably coupled to the light assembly, the payload monitoring module, and the transmission module. | 03-05-2015 |
20150059860 | METHOD TO STABILIZE PRESSURE IN AN ELECTRO-HYDRAULICALLY CONTROLLED BRAKE CHARGE SYSTEM - A method to stabilize pressure in an electro-hydraulically controlled brake charge system is provided. The brake charge system includes a load-sensing pump, an accumulator, a sensor, a high pressure cut-off valve, a controller, and a charge supply valve. The method includes determination of a pre-determined cut-out pressure and a pre-determined time threshold. The accumulator is pressurized with the fluid from the load-sensing pump. As accumulator pressure becomes equal to the pre-determined cut-out pressure, the controller initiates a counter-timer. When the counter-timer reaches the pre-determined time threshold, an electronic solenoid is activated, flow of the fluid is thus controlled through the charge supply valve based on a signal from the electronic solenoid. | 03-05-2015 |
20140222303 | METHOD FOR CONTROLLING DUMP BODY OF A HAULING MACHINE - A method for controlling a dump body of a hauling machine wherein the hauling machine includes an engine, at least one extendable cylinder, a lift energy source, and a controller is provided. The method includes initiation of the dump operation, detection of payload from the payload signal, calculation of engine throttle based on the payload information, and detection of machine speed based on the machine speed signal. Upon detection of machine speed, if the machine speed coincides with the first selective dump command, the transmission is disengaged and the payload is released at selective dump angle. If the machine speed coincides with the second selective dump command, the payload is released at selective dump angle. | 08-07-2014 |
20140219755 | ACTUATING SYSTEM FOR EJECTOR OF DUMP TRUCK - An actuating system for an ejector of a dump truck is disclosed herein. The dump truck includes a load carrying container having a first end and a second end. The actuating system includes a fluid cylinder, a first pulley, a second pulley, a third pulley, a first belt, and a second belt. The first pulley coupled to a second end of the fluid cylinder. The first belt coupled to the ejector blade at one end and coupled to the second pulley at the other end. The first belt passes over the first pulley and the second pulley to pulls the ejector blade in a first direction as the fluid cylinder extends. Similarly, the second belt passes over the first pulley and the third pulley to pull the ejector blade in a second direction as the fluid cylinder retracts. | 08-07-2014 |
20140151137 | HITCH ASSEMBLY FOR ARTICULATED MOBILE MACHINE - A hitch assembly is disclosed for use with an articulated mobile machine. The hitch assembly may have a yoke portion, a tube portion, a driveshaft, and a hitch carrier to rotationally support the driveshaft inside the tube portion and having a plurality of first holes. The hitch assembly may further have a plurality of fasteners to connect the hitch carrier to the tube portion via the plurality of first holes, and a thrust collar to threadingly engage a periphery of the hitch carrier and having a plurality of second holes. The hitch assembly may additionally have a locking plate with at least one pin to engage at least one of the plurality of second holes, and a plurality of third holes to receive at least some of the plurality of fasteners. The number of the plurality of second holes is greater than the number of the plurality of first holes. | 06-05-2014 |
20140138066 | COOLING PACKAGE FOR A MACHINE - A cooling package for a machine is disclosed. The cooling package includes a heat exchanger pivotably coupled to a frame of the machine. A fan assembly is pivotably coupled to the heat exchanger. In one embodiment, the cooling package includes at least one isolation mount configured to couple a fan shroud of the fan assembly with the frame. The cooling package also includes at least one latch to couple the fan shroud with the heat exchanger. | 05-22-2014 |
20140125070 | COOLING PACKAGE LATCH MECHANISM - A cooling package latch system is disclosed. The cooling package latch system includes a bracket removably coupled with a cooling package. The bracket includes a protruding striker. The cooling package latch system also includes a latch plate coupled to a sidewall proximate to the cooling package, and pivotable about a lateral axis. The latch plate includes a slot configured to hold the protruding striker to latch the cooling package at an angular position relative to an operational position. | 05-08-2014 |
20140096419 | WORK TOOL COUPLER LINKAGE - An electrically actuated coupling device for a machine and an implement is disclosed. The device includes a frame and an electric motor coupled to a drive shaft that extends between right and left ends of the frame. The motor causes the shaft to extend or retract from each end of the frame simultaneously. Each end of the frame includes a guide for receiving a latch. Each latch is pivotally coupled to a spring and each spring is pivotally coupled to a specially shaped lever which is pivotally coupled to the frame as well as an end of the shaft. The electric motor may be activated by the operator from within the cab. | 04-10-2014 |
20130164106 | ATTACHMENT FOR A BUCKET - An attachment for a bucket is disclosed. The bucket includes a plurality of panels including a bottom panel and two side panels. The bottom panel extends between the two side panels and has an edge. The attachment includes a plate having two major opposing surfaces. The attachment further includes an adapter extending from at least one of the two major opposing surfaces of the plate, the adapter being configured to engage the bottom panel of the bucket. The attachment further includes an attachment mechanism cooperating with at least one of the plate and the adapter to detachably attach the attachment to at least one panel in the plurality of panels of the bucket. | 06-27-2013 |
20130160441 | QUICK COUPLER CIRCUIT FOR CONSTRUCTION EQUIPMENT | 06-27-2013 |
20130098023 | ENERGY RECOVERY CONTROL CIRCUIT AND WORK MACHINE - An energy recovery control circuit is provided with an energy recovery system for recovering energy of a work equipment. The energy recovery control circuit includes an recovery control valve block in which a plurality of valves that constitute the energy recovery system are incorporated. The recovery control valve block includes a main spool, in which a plurality of control characteristics concerning recovery of energy are consolidated. | 04-25-2013 |
20130071295 | WORK MACHINE - A work machine has a machine body, a work equipment, a cab, a storage box and a liquid reducing agent tank. The work equipment is provided at a center of a front part of the machine body. The cab disposed at one of widthwise sides of the work equipment. The storage box is provided at the other widthwise side of the work equipment. The liquid reducing agent tank contains a liquid reducing agent for reducing nitrogen oxides. The liquid reducing agent tank is provided at a rear part of an interior of the storage box. | 03-21-2013 |
20120260646 | HYDRAULIC CIRCUIT CONTROL DEVICE AND WORK MACHINE - A controller controls the solenoid-operated variable pressure relief valves that are provided to control, at set pressures that can be electrically commanded, pressure of hydraulic oil fed to an attachment cylinder. The controller is provided with a control logic that is capable of controlling the aforementioned solenoid-operated variable pressure relief valves. The control logic performs the aforementioned calculation by compensating for pressure override characteristics of each solenoid-operated variable pressure relief valve based on input signals related to the set relief pressure for and a relief valve passing flow rate of the solenoid-operated variable pressure relief valve, and outputting to the solenoid-operated variable pressure relief valve command signals related to the adjusted set relief pressure resulting from the compensation of the pressure override characteristics. | 10-18-2012 |
20120131913 | HYDRAULIC SWING-CONTROLLING APPARATUS OF WORK MACHINE - In a work machine including a hydraulic pump ( | 05-31-2012 |
20110264334 | INTERFERENCE PREVENTION CONTROL DEVICE OF WORK MACHINE - The present invention provides an interference prevention control device of a work machine, wherein the interference prevention control device is capable of limiting movement of a cab based on a position of a tool and thereby preventing interference of the cab with the tool as well as improving the work efficiency of the work machine. A cab position sensor for detecting a position of a movable cab, as well as a boom angle sensor and an arm angle sensor for detecting a position of a tool at the distal end of the work equipment, are connected to a controller. Solenoid-operated directional control valves for limiting movement of a cab lifting cylinder are disposed in pilot passages of a spool of a pilot-operated control valve, and the solenoids of the solenoid-operated directional control valves are connected to the controller. Based on the positional relationship between the position of the cab (cab interference area) detected by the cab position sensor and the position of the tool detected by the boom angle sensor and the arm angle sensor, the controller controls movement of an actuator of the cab by means of the solenoid-operated directional control valves so as to prevent interference between the cab and the tool. | 10-27-2011 |
20110197576 | HYDRAULIC CONTROL SYSTEM IN WORKING MACHINE - A hydraulic control system that includes a controller that controls the accumulator flow rate control valve and a discharge flow rate of the hydraulic pump, wherein the controller: determines a minimum value among an operation demand flow rate to be demanded by an operation amount of hydraulic actuator operating members, a pump flow rate to be determined by a discharge pressure of the hydraulic pump under a constant horsepower control and a maximum flow rate of the hydraulic pump such that the determined minimum value is an actuator supply flow rate to be supplied to the plurality of hydraulic actuators, and controls the discharge flow rate and the accumulator flow rate so as to supply the actuator supply flow rate corresponding to a total flow rate of the discharge flow rate and the accumulator flow rate. | 08-18-2011 |
20110185637 | HINGE AND DOOR UNIT - A hinge enabling a plurality of hold-stay members to automatically lock when the door is fully open, increasing the durability of the hinge, and enabling easy release of the hold-stay members. A hinge includes a one-side hinge plate, a plurality of opposing-side hinge plate portions provided along the lengthwise direction of the hinge plate and supported by it, and an open-angle limiting mechanism for stopping, at a specific angle, opening movement of the opposing-side hinge plate portions. | 08-04-2011 |
20110018308 | DRESSING COVER STRUCTURE IN CONSTRUCTION MACHINE - A construction machine includes a tank with an upper surface and a side surface that is configured to allow a user to get onto and off the upper surface; and a dressing cover that covers part of the side surface, an upper portion of the dressing cover being formed by an inclined surface having an inclination angle set so as not to allow the user who gets onto and off the upper surface to step on the upper portion. | 01-27-2011 |
20110004379 | INTERFERENCE PREVENTION CONTROL DEVICE OF WORK MACHINE - The present invention provides an interference prevention control device of a work machine, wherein the interference prevention control device is capable of preventing interference between the cab and a tool of the work equipment regardless of whether either one of the cab or the work equipment is moved while the other is being operated, and thereby improving operation efficiency of the work machine. With regard to a work machine provided with a movable cab, a cab position sensor for detecting a cab position, as well as a boom angle sensor and an arm angle sensor for detecting a position of a tool at the distal end of the work equipment, are connected to a controller. Solenoid-operated directional control valves for limiting the movement of a boom cylinder and an arm cylinder for operating the work equipment are disposed in pressure passages of a pilot-operated control valve, and the solenoids of the solenoid-operated directional control valves are connected to the controller. The controller computes moving vectors based on the position of the cab detected by the cab position sensor and the moving speed of the cab determined by differentiation, predicts the cab position where the cab should be after a prescribed time, and controls the boom cylinder and the arm cylinder by means of the solenoid-operated directional control valves so as to prevent interference between the predicted cab position and the tool position. | 01-06-2011 |
20090136293 | TWO WIRE SIGNAL OVER POWER WORK TOOL COUPLING AND IDENTIFICATION - A coupler for a machine is disclosed. The coupler includes a housing sized to matingly engage a corresponding coupler housing. An electrical connector, disposed within the coupler housing is configured to create an electrical connection between the tool and the machine at a communication node. The electrical connection provides a circuit pathway for a conductor delivering both power and data to a plurality of devices connected to the machine. A message containing tool identification information is transmitted from the communication node when the coupler housing is connected to the complimentary coupler housing. | 05-28-2009 |