Patents Represented by Attorney, Agent or Law Firm A Calderon
-
Patent number: 6937606Abstract: Data structures, a method, and an associated transmission system for IP fragmentation and IP reassembly on network processors in order to minimize memory allocation requirements. Frame data for IP fragmentation or reassembly on a network processor is read into buffers to which are associated various control structures. The control structures permit IP fragmentation or reassembly to be accomplished without creating multiple copies of the frame or fragments.Type: GrantFiled: April 20, 2001Date of Patent: August 30, 2005Assignee: International Business Machines CorporationInventors: Claude Basso, Jean Louis Calvignac, Marco C. Heddes, Joseph Franklin Logan, Fabrice Jean Verplanken
-
Patent number: 6609487Abstract: A composite o-ring seal enables a wiring harness to extend from an exterior of the valve cover to an interior portion of the valve cover. The composite o-ring seal has at least one wire and an outer casing molded about the at least one wire. An entry opening extends from the outer casing at a first location and an exit opening extends from the outer casing at a second location. The entry and exit openings allow the wire to extend from the outer casing so that it may be connected between components on opposing sides of the valve cover without having to modify the engine block or other components.Type: GrantFiled: November 9, 2000Date of Patent: August 26, 2003Assignee: Caterpillar IncInventor: Daniel C. Morris
-
Patent number: 6591484Abstract: A piston insertion machine for inserting piston assemblies into respective cylinders of an internal combustion engine. The piston insertion machine eliminates the need for individually lifting and inserting the piston assemblies into the respective cylinders. The piston insertion machine includes a barrel assembly for holding the piston assembly. A first set of components pivot the piston barrel assembly (and thus the piston assembly) from an upright position to a horizontal position. Another component inserts the piston assembly into the cylinder of the engine block.Type: GrantFiled: June 14, 2001Date of Patent: July 15, 2003Assignee: Caterpillar IncInventors: James A. Cook, Brad A. Moore, Kevin R. Shaffer, James L. Thien, Robert L. Walters
-
Patent number: 6563131Abstract: Off-current is not compromised in a field effect transistor having a gate length less than 100 nanometers in length by maintaining the conduction channel width one-half to one-quarter of the gate length and locating the gate on at least two sides of the conduction channel and to thus create a full depletion device. Such a narrow conduction channel is achieved by forming a trough at minimum lithographic dimensions, forming sidewalls within the trough and etching the gate structure self-aligned with the sidewalls. The conduction channel is then epitaxially grown from the source structure in the trough such that the source, conduction channel and drain region are a unitary monocrystalline structure.Type: GrantFiled: June 2, 2000Date of Patent: May 13, 2003Assignee: International Business Machines CorporationInventors: James W. Adkisson, Paul D. Agnello, Arne W. Ballantine, Christopher S. Putnam, Jed H. Rankin
-
Patent number: 6516511Abstract: A piston ring compressor having position sensors for aligning a piston assembly with a cylinder of an engine block. The position sensors enable a piston assembly to be properly aligned with the cylinder prior to inserting the piston assembly into the cylinder without damaging either the piston assembly or the cylinder. The position sensors are linear variable distance transducer which are used to align the centerline of the piston ring compressor with the centerline of the cylinder.Type: GrantFiled: June 29, 2000Date of Patent: February 11, 2003Assignee: Caterpillar IncInventors: James A. Cook, Brad A. Moore, Kevin R. Shaffer, James L. Thien, Robert L. Walters
-
Patent number: 6484396Abstract: A method of manufacturing a camshaft used in an internal combustion engine. The method of manufacturing the camshaft produces a camshaft which has reduced weight and added wear resistance at a lobe of the camshaft. The camshaft is manufactured to provide increased efficiency of the internal combustion engine. The method of making the camshaft includes mixing wear resistant material with a base material and metering the mixture into a rotating die. The rotating die rotates at a predetermined speed and forces the wear resistant material to the outer surface of the lobes.Type: GrantFiled: June 29, 2001Date of Patent: November 26, 2002Assignee: Caterpillar IncInventors: Thomas Majewski, Michael J. Pollard
-
Patent number: 6477836Abstract: A pilot control system for maintaining a constant operating hydraulic fluid pressure in a hydraulic system throughout a range of hydraulic fluid flow and temperature conditions. The pilot control system has a pilot pump and a pilot relief valve in fluid communication with the pilot pump. A first pressure reducing valve is in fluid communication with the pilot pump and the pilot relief valve so as to reduce the pressure to components downstream of the pressure reducing valve.Type: GrantFiled: October 26, 2000Date of Patent: November 12, 2002Assignee: Caterpillar Inc.Inventors: Donald L. Bianchetta, Bernard J. Wulff, John V. Mount
-
Patent number: 6474274Abstract: A flywheel energy storage system for maintaining fan speed of a cooling fan on an internal combustion engine. The flywheel energy storage system allows a fan to rotate independent of the internal combustion engine and use energy stored in a flywheel for the continued rotation of the fan when a speed of the internal combustion engine falls below a predetermined speed. In this manner, the fan can provide an adequate air flow to cool the components of the internal combustion engine regardless of the speed of the internal combustion engine. To accomplish this, a fan is coupled to a clutch and a flywheel.Type: GrantFiled: December 14, 2000Date of Patent: November 5, 2002Assignee: Caterpillar Inc.Inventor: David L. Lehman
-
Patent number: 6467155Abstract: A transfer control system for enabling technicians to insert a piston assembly into a cylinder of an engine block. The transfer control system ensures that only one technician at a single time is capable of controlling the insertion of the piston assembly into the cylinder of the engine block. The transfer control system has a proximity sensor and a first control system in communication with the proximity sensor. A second control system is in communication with the first control system.Type: GrantFiled: June 29, 2000Date of Patent: October 22, 2002Assignee: Caterpillar IncInventors: James A. Cook, Brad A. Moore, Kevin R. Shaffer, James L. Thien, Robert L. Walters
-
Patent number: 6463893Abstract: A cooling fan drive system for connecting a charge pump to an output of a cooling fan motor. This arrangement allows hydraulic fluid to be suctioned into the charge pump when the charge pump is remote from a hydraulic tank. The cooling fan drive system has a hydraulic tank that stores hydraulic fluid. A cooling fan pump is connected between the hydraulic tank and a cooling fan motor. A connector is connected between the cooling fan motor, the charge pump and the hydraulic tank. This arrangement allows flow of hydraulic fluid from the cooling fan motor to the charge pump.Type: GrantFiled: October 31, 2000Date of Patent: October 15, 2002Assignee: Caterpillar IncInventors: James A. Foster, Jeffrey L. Slunder, Scott M. Longhurst
-
Patent number: 6367141Abstract: A method of inserting a piston assembly into a cylinder of an engine block. The method eliminates the need for a technician to individually lift and insert the piston assemblies into the respective cylinders. The method for inserting the piston assembly into the cylinder aligns the piston assembly with the cylinder and inserts the piston assembly into the cylinder by pivoting the piston assembly from an upright position to a horizontal position, and inserting the piston assembly into the cylinder of the engine block.Type: GrantFiled: June 29, 2000Date of Patent: April 9, 2002Assignee: Caterpillar Inc.Inventors: James A. Cook, Brad A. Moore, Kevin R. Shaffer, James L. Thien, Robert L. Walters
-
Patent number: 6293245Abstract: A cylinder head sealing system having a fail safe leakage control system. The fail safe leakage control system provides a leakage fluid path which allows any sealed fluid to leak externally from a cylinder head joint and not contaminate any other vital fluids. This feature permits the engine to “limp home” or continue operation until a permanent repair can be made to the engine. Thus, when a seal of the internal combustion engine fails, the fluid may flow within the fluid leakage paths externally from the cylinder head joint which prevents the fluid from flowing within the cylinder or other engine ports and contaminating the fluids therein.Type: GrantFiled: January 12, 2000Date of Patent: September 25, 2001Assignee: Caterpillar Inc.Inventor: Allyn P. Bock
-
Patent number: 6003400Abstract: A wrist mechanism for a robotic manipulator having kinematically zero length and mutually orthogonal unlimited joints is provided. The wrist mechanism provides access to any reachable point from any arbitrary direction. The wrist mechanism includes an intermediate joint created by two parallelogram four-bar linkages operating in parallel. Each of the four bar linkages include two side bars, a fixed bar and a coupler bar. The coupler bars extend to support a last link of the wrist mechanism which holds an end effector. The kinematic lengths of the side bars are less than the kinematic lengths of the fixed and coupler bars. The side bars of the first parallelogram four-bar linkage are fixed out of phase with respect to the side bars of the second parallelogram four-bar linkage. Also, the side bars of both parallelogram four-bar linkages occupy multiple planes which, along with the kinematic lengths of all the linkage bars, allows for unlimited rotation and zero dwell time.Type: GrantFiled: May 16, 1998Date of Patent: December 21, 1999Assignees: Jason W. Rauchfuss, Andrew M. CalderonInventor: Jason W. Rauchfuss
-
Patent number: 5839204Abstract: A portable dryer including a housing having an integrated fold up handle. At the outlet of the housing is an adjustable vent. The portable dryer is battery powered and may be used as cosmetic air dryer. A motor drives a variable speed fan which produces both cool and hot air.Type: GrantFiled: August 13, 1997Date of Patent: November 24, 1998Inventors: Brenda A Cinque, Eugene Delaney
-
Patent number: 5550837Abstract: A codeword forcing technique is applied which provides gradual degradation of an audio output during fading such that analog degradation in a fading signal environment is simulated.Type: GrantFiled: May 24, 1994Date of Patent: August 27, 1996Assignee: Telogy Networks, Inc.Inventor: Hyokang Chang