Patents Represented by Law Firm Phillips, Moore, Weissenberger Lempio & Strabala
  • Accumulator type fuel injection assembly
    Patent number: 3982694
    Abstract: A dual phase fuel injection nozzle assembly, including primary injection means which operate to provide a fine flow of fuel through an outward-opening check valve assembly and through a relatively small orifice. The assembly also includes secondary injection means which operate as an accumulator type fuel nozzle, utilizing a "non-return" valve to trap the fuel under pressure in an accumulator chamber and an inward-opening valve to control flow from the accumulator chamber through a relatively large orifice. The two phases are correlated with engine operating conditions to provide optimum rates of fuel injection over the entire operating range of a diesel engine.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: September 28, 1976
    Assignee: Caterpillar Tractor Co.
    Inventor: John M. Bailey
  • Hydraulic actuators equipped with cushioning means
    Patent number: 3979998
    Abstract: A hydraulic actuator comprising a pair of pressure oil chambers each of which has a cushioning port, the two cushioning ports being connected to each other through a cushioning means. The cushioning means includes a pair of cracking valves whose closing pressure is lower than its opening pressure and a pair of restricting means for restricting the flow of a pressure oil provided with regard to said cracking valves. This structure permits an output means for the actuator to be stopped smoothly as a result of fully absorbing the inertial energy that accompanies the output means.
    Type: Grant
    Filed: September 27, 1974
    Date of Patent: September 14, 1976
    Assignee: Caterpillar Mitsubishi Ltd.
    Inventor: Hideo Wada
  • Pivot pin including detachable pilot section
    Patent number: 3979994
    Abstract: A mobile construction machine comprises a pair of working components pivotally connected together by a pin. The pin has a first stop means secured on a first end thereof to prevent longitudinal movement of the pin in a first direction relative to the components and a second stop means releasably attached to a second end of the pin to prevent it from moving in the opposite direction. Upon removal of the second stop means from the pin, the pin may be removed from aligned bores formed through the components to disconnect the same. Upon reinstallation of the pin, a conically shaped self-centering member is attached to the pin in lieu of the second stop means to facilitate reinsertion of the pin into the bores formed in the components.
    Type: Grant
    Filed: January 23, 1975
    Date of Patent: September 14, 1976
    Assignee: Caterpillar Tractor Co.
    Inventor: Gerard M. G. J. Collignon
  • Variable hydrostatic bearing between barrel and head of axial piston units
    Patent number: 3980003
    Abstract: A hydraulic fluid pressure energy translating machine is provided with hydrostatic pressure-balancing means which communicate with the primary port to balance hydrostatic forces acting on the barrel during operation of the machine to maintain an optimum bearing clearance between the head and barrel, thereby controlling fluid leakage and maintaining adequate lubrication and support at this interface.
    Type: Grant
    Filed: February 7, 1975
    Date of Patent: September 14, 1976
    Assignee: Caterpillar Tractor Co.
    Inventors: Robert J. Huebner, Carman P. Lynnes, Ralph A. Matzelle, Richard L. M. Sears
  • Hitch pin assembly for a tractor-scraper vehicle and the like
    Patent number: 3980321
    Abstract: A hitch pin assembly for a tractor-scraper vehicle and the like in which the assembly serves as an articulation element in a location encumbered with many other pieces of equipment causing difficult access. The assembly comprises a pivot pin threaded on both ends and formed for fitting completely axially through a pair of machine elements mounted on the tractor and scraper respectively, a pair of adjusting nuts internally threaded to fit the threaded ends of the pivot pin, and a pair of locking elements in the form of retainer plates adapted to fit over the pair of adjusting nuts and restrain them against rotation with respect to the machine elements.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: September 14, 1976
    Assignee: Caterpillar Tractor Co.
    Inventor: Thomas R. Hamilton
  • Stress-relieved axle mounting for track-type vehicles
    Patent number: 3980149
    Abstract: A track-type vehicle comprises a main frame having a pair of laterally spaced track roller frames pivotally mounted on either side thereof. The rearward ends of the track roller frames are pivotally mounted for vertical movements on opposite ends of an axle extending transversely therebetween. The axle is mounted on the main frame by a pair of self-aligning spherical bearing assemblies.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: September 14, 1976
    Assignee: Caterpillar Tractor Co.
    Inventors: Gary D. Blomstrom, Thomas E. Cochran, Mohamed Abdel-Fattah Abdel-Latif, Lyle E. York
  • Maintenance monitor for telephone switching systems
    Patent number: 3980839
    Abstract: A data processing system for monitoring a telephone switching system comprises a microprocessor controller, random access and read only memories, and data input and error output means. The data processing system analyzes the received data to determine if the switching system is operating correctly, and if it is not outputs coded information indicating the errors discovered and methods for switching system repair.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: September 14, 1976
    Assignee: Lynch Communication Systems, Inc.
    Inventor: Alan G. Hutcheson
  • Duplex filter system
    Patent number: 3979292
    Abstract: A duplex filter system having two filterized fluid flow circuits for maintaining continuous fluid flow to an engine or similar liquid utilizing device during a filter change operation. A fluid control system is provided including liquid-obstructing air vent means for selectively venting air under pressure from an empty one of said two circuits while retaining fluid under pressure within the other said circuit during charging of said empty circuit, whereby fluid pressure within the system is regulated, and the fluid flow controlled. Detection means for detecting pressure within each of the two circuits.
    Type: Grant
    Filed: August 10, 1973
    Date of Patent: September 7, 1976
    Assignee: Caterpillar Tractor Co.
    Inventor: Charles W. Kuhn
  • Mover unit for irrigation line
    Patent number: 3978882
    Abstract: A wheeled mover unit has mounted to the frame thereof a ring gear, and a rollingly movable irrigation line has fixed thereto oppositely extending arms, to which are mounted hydraulic motors for driving pinion gears in engagement with the ring gear. Conduit means run from a hydraulic pump at the end of the irrigation line to the hydraulic motors to drive the pinion gears so that such pinion gears orbit about the ring gear, turning the oppositely extending arms to in turn rotate the irrigation line.
    Type: Grant
    Filed: October 16, 1975
    Date of Patent: September 7, 1976
    Assignee: R. M. Wade & Co.
    Inventor: Gail Cornelius
  • Hinge disconnect means for a door
    Patent number: 3978550
    Abstract: A hinge assembly for connecting a door with a frame member includes an arm pivotally secured relative to the frame member, and an arm secured to the door. A spring pin is utilized to secure the two arms together so that the door is pivotally connected to the frame member. The arms and connecting means associated therewith are positioned so that they are inward of the door with such door in its closed position.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: September 7, 1976
    Assignee: Caterpillar Tractor Co.
    Inventor: William J. Brown
  • Cable insulation stripping tool
    Patent number: 3978582
    Abstract: A tool for removing insulation from a cable includes roller means for supporting cables of different diameters while permitting rotation of the tool relative to the cable. The tool includes a blade which is positioned to urge and move the tool and cable relatively axially for each turn of the tool and cable relatively. A bar member is included for limiting relative axial movement of the cable and tool for each turn of the tool and cable relatively, to a certain distance less than such axial distance movement determined by the positioning of the blade, at each turn of the tool and cable relatively.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: September 7, 1976
    Assignee: Speed Systems, Inc.
    Inventor: Walter J. Maytham
  • V-Type internal combustion engine
    Patent number: 3978828
    Abstract: A V-8 internal combustion engine has its two cylinder banks disposed at an included angle of 65.degree. and each adjacent pair of crankpins of a two-plane, counterweighted crankshaft displaced at an angle of 25.degree. with respect to each other. Sharp edges initially formed at diametrically opposed intersections of each pair of crankpins are ground-off to form an S-shaped blended surface area thereat for reducing stress concentrations.
    Type: Grant
    Filed: August 14, 1972
    Date of Patent: September 7, 1976
    Assignee: Caterpillar Tractor Co.
    Inventor: Robert L. Weber
  • Parking brake system with transmission interlock
    Patent number: 3978946
    Abstract: A parking brake system with transmission interlock means is provided with means to override the interlock means. The parking brake system is spring-actuated and fluid pressure released with means to vent the transmission controls when the parking brake is engaged. A special interlock valve is provided to selectively override the normal system to prevent venting of the transmission.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: September 7, 1976
    Assignee: Caterpillar Tractor Co.
    Inventor: Michael D. Ream
  • Wrecking and hauling truck
    Patent number: 3977546
    Abstract: A truck body unit configured for wrecking and/or hauling operations includes a fabricated body unit having a structural framework suitable for connection to a chassis frame with a flat bed generally configured for hauling operations, a boom being pivotably connected with the structural framework adjacent a rearward end of the body unit for movement between a lowered position in general alignment with the bed and an erect position with a rearward end of the boom extending past and above the rearward end of the flat bed. The boom is adapted for supporting a load to be towed with a motor being operatively interconnected between the boom and the structural framework for raising and lowering the boom. Although the boom is particularly contemplated for raising a load by operation of the interconnecting motor means, a separate winch unit may also be provided for increased operating versatility of the truck.
    Type: Grant
    Filed: November 7, 1974
    Date of Patent: August 31, 1976
    Inventor: Richard Loza
  • Side handling attachment
    Patent number: 3977550
    Abstract: An attachment for use on a fork lift truck includes a base portion, and stabilizer bars movable relative thereto, laterally of the truck. The attachment also includes a platform movable relative to the base means laterally of the truck, and actuating means, including pulley and cable means, are utilized to initially move the stabilizer bars laterally of the truck, for engagement with a storage rack for stabilizing the fork lift truck. The platform is then shifted laterally to shift the load thereon. When this operation is completed, the platform is initially retracted, with the stabilizer bars in their outward or extended positions, and then the stabilizer bars themselves are retracted.
    Type: Grant
    Filed: November 18, 1974
    Date of Patent: August 31, 1976
    Assignee: Towmotor Corporation
    Inventors: John T. Crawford, Walter M. Shaffer
  • Rifle magazine
    Patent number: 3977114
    Abstract: A magazine for dispensing cartridges has improved capacity provided by an enlarged case and a hinged, two-piece follower pivotally mounted on a follower platform, which is elevated in the case by means of a spring. The enlarged case also serves as a hand rest to aid in steadying a rifle with which the magazine is used, thereby improving firing accuracy.
    Type: Grant
    Filed: June 18, 1975
    Date of Patent: August 31, 1976
    Inventor: Robert G. Poor
  • Low-effort proportional control valve
    Patent number: 3977301
    Abstract: A fluid control circuit for regulating fluid flow between a pressurized fluid source and a hydraulic motor, including a control valve having a movable spool for communicating fluid entering an inlet chamber from the source with service chambers in communication with the motor, a dump valve limiting communication of the inlet chamber with a drain in response to spring means and fluid communicated to the dump valve through a passage open to either of the service chambers when it is placed in communication with the inlet chamber by the control valve spool, the passage otherwise communicating the dump valve with a drain so that fluid communication between the inlet chamber and drain is limited only by the spring means. The force of the spring means may also be varied in certain embodiments of the invention.
    Type: Grant
    Filed: January 31, 1975
    Date of Patent: August 31, 1976
    Assignee: Caterpillar Tractor Co.
    Inventors: Neil W. Kroth, Kenneth R. Lohbauer, James E. Scheidt
  • Cylinder attachment means for an excavator and method for using the same
    Patent number: 3977548
    Abstract: A mobile excavator comprises a tracked undercarriage having an upper unit rotatably mounted thereon. A boom is pivotally mounted on the upper carriage and has a dipper arm pivotally mounted at a forward end thereof, the dipper arm in turn having a dipper mounted on its lower end. A double-action hydraulic cylinder is interconnected between the boom and an upper end of the dipper arm to selectively pivot the dipper arm on the boom. Attachment means are mounted on the boom to releasably attach the cylinder thereto upon removal of the dipper arm and its attendant structures for transport of the excavator.
    Type: Grant
    Filed: October 24, 1974
    Date of Patent: August 31, 1976
    Assignee: Caterpillar Tractor Co.
    Inventors: Michael Benjamin McCannon, Richard Charles Zielie
  • Step assembly for an earth-moving vehicle
    Patent number: 3976164
    Abstract: In an earth-moving vehicle, a step assembly having a step member and an attachment device is affixed outwardly of the frame of the vehicle to allow longitudinal displacement of the step member upon contacting an obstruction. The attachment device comprises a plurality of flexible members each having a flexible cable with rigid threaded rods affixed at each end for securing the step member to the vehicle frame or bracket affixed thereto; and an elastomeric tubular member encompassing the flexible cable, the elastomeric member acting as a spacer to spatially remove the step member from the vehicle frame while allowing the step member to deflect longitudinally relative to the vehicle frame upon contacting an obstruction adjacent to the path of the vehicle and to return the step member to its operating position upon clearing the obstruction.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: August 24, 1976
    Assignee: Caterpillar Tractor Co.
    Inventor: Calvin L. Miller
  • Cab mounting structure
    Patent number: 3976323
    Abstract: A vehicle includes a pair of substantially horizontal frame members, each defining a pair of apertures disposed transversely of the vehicle. A protective structure includes a pair of upwardly extending members, each defining transverse apertures which are sized and positioned so as to come into registry with the pair of apertures defined by a side member associated therewith. Pins are removably positionable in these registered apertures, each pin being positioned generally transversely of the vehicle.
    Type: Grant
    Filed: April 10, 1975
    Date of Patent: August 24, 1976
    Assignee: Caterpillar Tractor Co.
    Inventor: William H. Godfrey