Patents by Inventor John Rutledge
John Rutledge has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20230303345Abstract: A raising assembly for use with a gangway connected for rotation between a raised stowed position and a lowered deployed position. The raising assembly comprises at least one fluid actuated cylinder connected to the gangway. A raising actuator is operative to cause operation of the cylinder in a manner that rotates the gangway toward the stowed position while the raising actuator is continuously activated by an operator. A lowering actuator is operative to cause operation of the cylinder in a manner that rotates the gangway toward the deployed position due to gravitational forces while the lowering actuator is continuously activated by the operator. The raising assembly is configured to maintain the gangway at a current position between the stowed position and the deployed position if the operator does one of ceasing to activate the raising actuator while raising the gangway or ceasing to activate the lowering actuator while lowering the gangway.Type: ApplicationFiled: May 26, 2023Publication date: September 28, 2023Inventors: John Rutledge LAWSON, James Michael O'KEEFE, Jeff W. REICHERT, Jeffrey David SCOTT
-
Patent number: 11701953Abstract: A container tarping assembly comprises a frame structure. A left spreader assembly and a right spreader assembly adapted to carry a tarp are also provided. The left spreader assembly includes first and second left travelers. The right spreader assembly includes first and second right travelers. The travelers are each movable in reciprocating fashion along a predetermined path between a first limit and a second limit. A plurality of drive mechanisms are respectively associated with the travelers to move the traveler in the reciprocating fashion, each of the drive mechanisms having a bidirectional motor.Type: GrantFiled: November 10, 2021Date of Patent: July 18, 2023Assignee: SAFE RACK LLCInventors: Robert W. Honeycutt, Zachary James Long, Joseph N. Lane, Paul Thomas King, Jr., Mark Frederick Ingersoll, John Rutledge Lawson, Raquel Strickland
-
Patent number: 11685618Abstract: A gangway comprises a fixed platform and a support structure connected to the fixed platform in a manner that allows the support structure to rotate with respect to the fixed platform between a raised stowed position and a lowered deployed position. A self-raising assembly is operative to rotate the support structure from the deployed position to the stowed position. The self-raising assembly includes at least one fluid actuated cylinder connected between the fixed platform and a distal end of the support structure. A raising actuator is usable by an operator to cause operation of the cylinder in a manner that rotates the support structure toward the stowed position.Type: GrantFiled: January 13, 2022Date of Patent: June 27, 2023Assignee: Safe Rack LLCInventors: John Rutledge Lawson, James Michael O'Keefe, Jeff W. Reichert, Jeffrey David Scott
-
Patent number: 11655754Abstract: An engine assembly comprises: an internal combustion engine having: a combustion chamber; an air inlet for supplying air to the combustion chamber; a fuel injector for supplying fuel to the combustion chamber; an exhaust outlet for releasing exhaust gas from the combustion chamber and a rotatable drive shaft, wherein combustion of fuel in air within the combustion chamber results in rotation of the drive shaft. The engine assembly further comprises: a turbocharger system comprising: a turbine configured to recover energy from exhaust gas provided via the exhaust gas outlet; and a turbocharger compressor configured to receive energy from the turbine and thereby to compress air for use in combustion of fuel in the combustion chamber. The engine assembly further comprises: a supercharger system comprising a supercharger compressor configured to receive kinetic energy from the drive shaft and to compress air for use in combustion in the combustion chamber.Type: GrantFiled: November 27, 2019Date of Patent: May 23, 2023Assignee: Perkins Engines Comapny LimitedInventor: John Rutledge
-
Publication number: 20220135353Abstract: A gangway comprises a fixed platform and a support structure connected to the fixed platform in a manner that allows the support structure to rotate with respect to the fixed platform between a raised stowed position and a lowered deployed position. A self-raising assembly is operative to rotate the support structure from the deployed position to the stowed position. The self-raising assembly includes at least one fluid actuated cylinder connected between the fixed platform and a distal end of the support structure. A raising actuator is usable by an operator to cause operation of the cylinder in a manner that rotates the support structure toward the stowed position.Type: ApplicationFiled: January 13, 2022Publication date: May 5, 2022Inventors: John Rutledge Lawson, James Michael O'Keefe, Jeff W. Reichert, Jeffrey David Scott
-
Publication number: 20220056839Abstract: An engine assembly comprises: an internal combustion engine having: a combustion chamber; an air inlet for supplying air to the combustion chamber; a fuel injector for supplying fuel to the combustion chamber; an exhaust outlet for releasing exhaust gas from the combustion chamber and a rotatable drive shaft, wherein combustion of fuel in air within the combustion chamber results in rotation of the drive shaft. The engine assembly further comprises: a turbocharger system comprising: a turbine configured to recover energy from exhaust gas provided via the exhaust gas outlet; and a turbocharger compressor configured to receive energy from the turbine and thereby to compress air for use in combustion of fuel in the combustion chamber. The engine assembly further comprises: a supercharger system comprising a supercharger compressor configured to receive kinetic energy from the drive shaft and to compress air for use in combustion in the combustion chamber.Type: ApplicationFiled: November 27, 2019Publication date: February 24, 2022Applicant: Perkins Engines Company LimitedInventor: John RUTLEDGE
-
Patent number: 11254527Abstract: A gangway comprises a fixed platform and a support structure connected to the fixed platform in a manner that allows the support structure to rotate with respect to the fixed platform between a raised stowed position and a lowered deployed position. A self-raising assembly is operative to rotate the support structure from the deployed position to the stowed position. The self-raising assembly includes at least one fluid actuated cylinder connected between the fixed platform and a distal end of the support structure. A raising actuator is usable by an operator to cause operation of the cylinder in a manner that rotates the support structure toward the stowed position.Type: GrantFiled: April 3, 2020Date of Patent: February 22, 2022Assignee: Safe Rack LLCInventors: John Rutledge Lawson, James Michael O'Keefe, Jeff W. Reichert, Jeffrey David Scott
-
Patent number: 10934949Abstract: A combined engine system is disclosed which may help to meet electrical power demand of a common load that can vary in an unpredictable manner. The system comprises at least one primary engine and one or more secondary engines. An after-treatment system is connected to the engines to receive exhaust flow from each of the engines. A controller is configured to operate the system in a first operating mode when only the primary engine is running and a second operating mode when the secondary engines are run together with the primary engine. Exhaust flows from each of the engines are passed through the after-treatment system which allows the after-treatment system to be heated by the exhaust flow of the primary engine before receiving exhaust flows from the secondary engines.Type: GrantFiled: March 14, 2019Date of Patent: March 2, 2021Assignee: Caterpillar Inc.Inventor: John Rutledge
-
Patent number: 10815592Abstract: The present invention relates to a thermal insulating structure including at least one baffle, to an article of wear and a sleeping bag including such a thermal insulating structure, and to a method for manufacturing such a thermal insulating structure. In some embodiments, the baffle includes a plurality of natural and/or synthetic down fibers and a plurality of low-melt fibers, wherein the low-melt fibers have been melted to the natural and/or synthetic down fibers by heating inside the baffle.Type: GrantFiled: December 6, 2017Date of Patent: October 27, 2020Assignee: adidas AGInventors: Julie Caroline Gretton, John Rutledge, Stephen John Russell, Vera Chetty, Matthew James Tipper
-
Publication number: 20200317456Abstract: A gangway comprises a fixed platform and a support structure connected to the fixed platform in a manner that allows the support structure to rotate with respect to the fixed platform between a raised stowed position and a lowered deployed position. A self-raising assembly is operative to rotate the support structure from the deployed position to the stowed position. The self-raising assembly includes at least one fluid actuated cylinder connected between the fixed platform and a distal end of the support structure. A raising actuator is usable by an operator to cause operation of the cylinder in a manner that rotates the support structure toward the stowed position.Type: ApplicationFiled: April 3, 2020Publication date: October 8, 2020Inventors: John Rutledge Lawson, James Michael O'Keefe, Jeff W. Reichert, Jeffrey David Scott
-
Publication number: 20190360212Abstract: A method is disclosed of attaching a tread assembly of a spiral staircase to a vertical support column. One step of the method involves providing a tread assembly having a tread portion attached to an arcuate mounting plate defining at least one hole through which extends a fastener defining external threads, the mounting plate having a first face defining a first radius of curvature. Another step involves providing a support column extending along an axis, the support column having a plurality of axially and angularly spaced apart tread attachment locations, each of the tread attachment locations having an arcuate outer surface defining a corresponding aperture for receipt of the fastener, the arcuate outer surface defining a second radius of curvature that is greater than the first radius of curvature. According to another step of the method, the tread assembly is loosely connected to one of the tread attachment locations of the support column.Type: ApplicationFiled: July 10, 2019Publication date: November 28, 2019Inventor: John Rutledge Lawson
-
Patent number: 10487514Abstract: A method is disclosed of attaching a tread assembly of a spiral staircase to a vertical support column. One step of the method involves providing a tread assembly having a tread portion attached to an arcuate mounting plate defining at least one hole through which extends a fastener defining external threads, the mounting plate having a first face defining a first radius of curvature. Another step involves providing a support column extending along an axis, the support column having a plurality of axially and angularly spaced apart tread attachment locations, each of the tread attachment locations having an arcuate outer surface defining a corresponding aperture for receipt of the fastener, the arcuate outer surface defining a second radius of curvature that is greater than the first radius of curvature. According to another step of the method, the tread assembly is loosely connected to one of the tread attachment locations of the support column.Type: GrantFiled: July 10, 2019Date of Patent: November 26, 2019Assignee: Safe Rack LLCInventor: John Rutledge Lawson
-
Publication number: 20190323438Abstract: A combined engine system is disclosed which may help to meet electrical power demand of a common load that can vary in an unpredictable manner. The system comprises at least one primary engine and one or more secondary engines. An after-treatment system is connected to the engines to receive exhaust flow from each of the engines. A controller is configured to operate the system in a first operating mode when only the primary engine is running and a second operating mode when the secondary engines are run together with the primary engine. Exhaust flows from each of the engines are passed through the after-treatment system which allows the after-treatment system to be heated by the exhaust flow of the primary engine before receiving exhaust flows from the secondary engines.Type: ApplicationFiled: March 14, 2019Publication date: October 24, 2019Applicant: Caterpillar Inc.Inventor: John Rutledge
-
Patent number: 10378212Abstract: A spiral staircase comprises a mounting column extending along a longitudinal axis. A plurality of tread assemblies each having a tread portion attached to a mounting plate is also provided. The tread assemblies are axially and angularly offset from an adjacent tread assemblies along the mounting column. In this aspect, each mounting plate has a first face that engages a corresponding portion of an outer surface of the mounting column and a second face from which the tread portion extends. Each of the tread assemblies further have attachment hardware that secures the mounting plate to the mounting column. Prior to attachment to the mounting column and in an unstressed state, the mounting plate has a first radius of curvature and the corresponding portion of the outer surface of the mounting column has a second radius of curvature.Type: GrantFiled: May 23, 2018Date of Patent: August 13, 2019Assignee: Safe Rack LLCInventor: John Rutledge Lawson
-
Patent number: 10253464Abstract: A gangway comprises a fixed platform and a support structure. The support structure is connected to the fixed platform in a manner that allows the support structure to rotate with respect to the fixed platform. A releasable position locking assembly inhibits rotation of the support structure in a raising direction.Type: GrantFiled: July 22, 2016Date of Patent: April 9, 2019Assignee: Safe Rack, LLCInventors: John Rutledge Lawson, James Pearce Daniel, III
-
Publication number: 20180155859Abstract: The present invention relates to a thermal insulating structure including at least one baffle, to an article of wear and a sleeping bag including such a thermal insulating structure, and to a method for manufacturing such a thermal insulating structure. In some embodiments, the baffle includes a plurality of natural and/or synthetic down fibers and a plurality of low-melt fibers, wherein the low-melt fibers have been melted to the natural and/or synthetic down fibers by heating inside the baffle.Type: ApplicationFiled: December 6, 2017Publication date: June 7, 2018Inventors: Julie Caroline Gretton, John Rutledge, Stephen John Russell, Vera Chetty, Matthew James Tipper
-
Patent number: 9735723Abstract: A method to control the rotor position in a reluctance motor includes: energizing a phase winding to an energized state so as to move a rotor relative to a stator; switching the phase winding between the energized state and a freewheeling state over a pulsing period to produce a plurality of phase current pulses wherein the phase current freewheels in the freewheeling state over a freewheeling period of each current pulse; sampling rates of change of phase current and amplitudes of phase current during a plurality of freewheeling periods; de-energizing the phase winding; and computing the angular position of the rotor.Type: GrantFiled: July 28, 2016Date of Patent: August 15, 2017Assignee: Perkins Engines Company LimitedInventors: John Rutledge, Stephen Watkins
-
Publication number: 20170033719Abstract: A method to control the rotor position in a reluctance motor includes: energising a phase winding to an energised state so as to move a rotor relative to a stator; switching the phase winding between the energised state and a freewheeling state over a pulsing period to produce a plurality of phase current pulses wherein the phase current freewheels in the freewheeling state over a freewheeling period of each current pulse; sampling rates of change of phase current and amplitudes of phase current during a plurality of freewheeling periods; de-energising the phase winding; and computing the angular position of the rotor.Type: ApplicationFiled: July 28, 2016Publication date: February 2, 2017Applicant: Perkins Engines Company LimitedInventors: John Rutledge, Stephen Watkins
-
Publication number: 20170030034Abstract: A gangway comprises a fixed platform and a support structure. The support structure is connected to the fixed platform in a manner that allows the support structure to rotate with respect to the fixed platform. A releasable position locking assembly inhibits rotation of the support structure in a raising direction.Type: ApplicationFiled: July 22, 2016Publication date: February 2, 2017Inventors: John Rutledge Lawson, James Pearce Daniel, III
-
Patent number: 6177662Abstract: A method and apparatus (10) for the heating of convective material contained within the lumen of an inductive heating coil (12, 15, 16, 17) such that the cans (20) are rotated about their axes as they are heated. When the cans (20) are to be heated above the boiling point of their contents the cans (20) are passed through a rotary pressure lock (13, 19, 22) so that the heating of the contents of the cans (20) occurs under a super-atmospheric pressure.Type: GrantFiled: December 21, 1999Date of Patent: January 23, 2001Inventor: Peter John Rutledge