Patents by Inventor Ralph Larson

Ralph Larson 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).

  • Patent number: 11021054
    Abstract: An integrated pinion/bearing/coupling (PBC) assembly for use with a hypoid gearset in power transfer assemblies of motor vehicles having mounting features and venting features, The integrated PBC assembly includes a hollow pinion unit made of steel and including a pinion shaft segment and a pinion gear segment, and a coupling unit having a hub segment made of aluminum. A brazing sleeve is used to braze the aluminum hub segment of the coupling unit to the steel pinion shaft segment of the pinion unit.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: June 1, 2021
    Assignee: MAGNA POWERTRAIN OF AMERICA, INC.
    Inventors: Bradley Ketchel, Wade Smith, Ralph Larson, Ryan Strand
  • Patent number: 10851886
    Abstract: A two-speed transfer case for a four-wheel drive vehicle is provided. The transfer case has a two-speed planetary gearset, a range clutch, and a range shift mechanism. The planetary gearset includes a carrier unit having at least one crack arresting feature configured to limit propagation of a stress crack. The carrier unit includes a plurality of mounting holes for securing planet gears for rotation relative to the carrier unit. The gearset includes a sun gear configured for and a ring gear, with the planet gears in meshed engagement with the sun gear and the ring gear. The crack arresting feature extends at least partially through a portion of the carrier unit and is configured to receive a crack propagating from a central aperture of the carrier unit. The crack arresting feature is disposed radially between the central aperture and the mounting holes.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: December 1, 2020
    Assignee: MAGNA POWERTRAIN OF AMERICA INC.
    Inventors: Michael Bujold, Ralph Larson
  • Patent number: 10759274
    Abstract: An integrated pinion/bearing/coupling (PBC) assembly for use with a hypoid gearset in power transfer assemblies of motor vehicles having mounting features and venting features. The integrated PBC assembly includes a hollow pinion unit made of steel and including a pinion shaft segment and a pinion gear segment, and a coupling unit having a hub segment made of aluminum. A brazing sleeve is used to braze the aluminum hub segment of the coupling unit to the steel pinion shaft segment of the pinion unit. The PBC assembly can further include a constant velocity joint (CVJ) unit connected to, or formed as part of, the coupling unit.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: September 1, 2020
    Assignee: MAGNA POWERTRAIN OF AMERICA, INC.
    Inventors: Bradley Ketchel, Wade Smith, Ralph Larson, Ryan Strand
  • Publication number: 20200063856
    Abstract: A two-speed transfer case for a four-wheel drive vehicle is provided. The transfer case has a two-speed planetary gearset, a range clutch, and a range shift mechanism. The planetary gearset includes a carrier unit having at least one crack arresting feature configured to limit propagation of a stress crack. The carrier unit includes a plurality of mounting holes for securing planet gears for rotation relative to the carrier unit. The gearset includes a sun gear configured for and a ring gear, with the planet gears in meshed engagement with the sun gear and the ring gear. The crack arresting feature extends at least partially through a portion of the carrier unit and is configured to receive a crack propagating from a central aperture of the carrier unit. The crack arresting feature is disposed radially between the central aperture and the mounting holes.
    Type: Application
    Filed: August 22, 2019
    Publication date: February 27, 2020
    Inventors: Michael Bujold, Ralph Larson
  • Publication number: 20190031023
    Abstract: An integrated pinion/bearing/coupling (PBC) assembly for use with a hypoid gearset in power transfer assemblies of motor vehicles having mounting features and venting features, The integrated PBC assembly includes a hollow pinion unit made of steel and including a pinion shaft segment and a pinion gear segment, and a coupling unit having a hub segment made of aluminum. A brazing sleeve is used to braze the aluminum hub segment of the coupling unit to the steel pinion shaft segment of the pinion unit.
    Type: Application
    Filed: February 8, 2017
    Publication date: January 31, 2019
    Inventors: Bradley Ketchel, Wade Smith, Ralph Larson, Ryan Strand
  • Publication number: 20190024772
    Abstract: An integrated pinion/bearing/coupling (PBC) assembly for use with a hypoid gearset in power transfer assemblies of motor vehicles having mounting features and venting features. The integrated PBC assembly includes a hollow pinion unit made of steel and including a pinion shaft segment and a pinion gear segment, and a coupling unit having a hub segment made of aluminum. A brazing sleeve is used to braze the aluminum hub segment of the coupling unit to the steel pinion shaft segment of the pinion unit.
    Type: Application
    Filed: February 8, 2017
    Publication date: January 24, 2019
    Applicant: MAGNA POWERTRAIN OF AMERICA, INC.
    Inventors: Bradley Ketchel, Wade Smith, Ralph Larson, Ryan Strand
  • Patent number: 8538526
    Abstract: A rate-adaptive pacemaker and a method for its operation in which the response factor for a minute ventilation sensor or other type of exertion level sensor is automatically set during a parameter adjustment mode that utilizes an activity level measurement to determine when the patient is at a target activity level with which is associated an appropriate target pacing rate. In a preferred embodiment, the target activity level corresponds to casual walking (e.g., 2 mph at a 4% grade) with a target pacing rate selected as appropriate for that level of activity in the individual patient.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: September 17, 2013
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Jeffrey E. Stahmann, Michael A. Querimit, Donald L. Hopper, Brian Ralph Larson, Paul F. Emerson, Daniel O'Brien
  • Publication number: 20120047644
    Abstract: A Toilet Flushing System using Wastewater (10) includes a mounting bracket assembly (24) for mounting within the tank (12) of a conventional water closet. The assembly (24) uses a release float (28) to rise with tank water level and eventually release a main float (26) when the tank water level reaches float release level. The main float (26), when released will cause a shutoff plunger (50) to engage a valve retaining arm (51) to release the valve release arm (56) and thereby shut off fresh water flow into the tank (12), and also activate flapper valve (34) to release flushing water into the toilet. Water is introduced into the tank (12) either via the fill valve (60) or via a drain pipe (10) interconnecting a gray water supply from the drain (16) of an adjacent sink basin (16).
    Type: Application
    Filed: August 30, 2010
    Publication date: March 1, 2012
    Inventor: Ralph Larson
  • Publication number: 20110152963
    Abstract: A rate-adaptive pacemaker and a method for its operation in which the response factor for a minute ventilation sensor or other type of exertion level sensor is automatically set during a parameter adjustment mode that utilizes an activity level measurement to determine when the patient is at a target activity level with which is associated an appropriate target pacing rate. In a preferred embodiment, the target activity level corresponds to casual walking (e.g., 2 mph at a 4% grade) with a target pacing rate selected as appropriate for that level of activity in the individual patient.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 23, 2011
    Inventors: Jeffrey E. Stahmann, Michael A. Querimit, Donald L. Hopper, Brian Ralph Larson, Paul F. Emerson, Daniel O'Brien
  • Publication number: 20070131502
    Abstract: A cam for a brake is provided that allows for greater brake shoe travel and thicker brake linings while providing the same or greater mechanical force as compared to conventional cams. One or more lobes of the cam include multiple portions having varying profiles in axial cross-section. The variation in the cam profiles results in a cam in which the outermost ends or tips of the lobes are longer than in conventional cams yet retain the same mechanical strength.
    Type: Application
    Filed: January 25, 2007
    Publication date: June 14, 2007
    Inventors: James Clark, Dominic Licavoli, James Sheets, Ralph Larson
  • Patent number: 7159698
    Abstract: A disc brake rotor assembly has a central carrier with a first side and a second side. At least two wear surfaces are releasably secured to the first side and at least two wear surfaces are releasably secured to the second side. A locking mechanism disposed within the central carrier selectively engages and releases the wear surfaces.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: January 9, 2007
    Assignee: Bendix Spicer Foundation Brake, LLC
    Inventors: Daniel E. Banks, Alan Hendershot, Thomas L. Runels, Ralph Larson
  • Publication number: 20060181860
    Abstract: A heat sink includes a heat conducting substrate and a plurality of directive heat elements disposed within the substrate such that a first end of each of the plurality directive heat elements are adapted to be disposed proximate a heat generating device and a second end of each of the plurality of directive heat elements are spaced apart within the substrate to promote the transfer to heat from the heat generating device through the directive elements to an area of the heat conducting substrate which is larger than the area of the heat generating device. In this way, the heat sink transforms a high heat flux density existing at one end of the directive heat elements proximate a device being cooled to a low heat flux density at an opposite end of the directive heat elements.
    Type: Application
    Filed: February 13, 2006
    Publication date: August 17, 2006
    Inventor: Ralph Larson
  • Publication number: 20060137986
    Abstract: A valve for controlling fluid flow has a housing with a plurality of ports. A movable element has a movable surface with an opening, and is capable of moving between (i) a first position in which the opening is aligned to at least one of the ports such that fluid can pass between ports, and (ii) a second position which blocks the passage of fluid between the ports. At least one rim seal encircles each of the ports, each opening, or both. A floating seal is positioned between the movable surface and the housing and is in contact with the at least one rim seal. The floating seal has a passage that aligns with the opening of the movable surface and at least one of the ports when the movable element is in the first position, and a continuous sealing surface about the passage that is sufficiently long to close off the opening of the movable surface as the movable element moves from the first position to the second position, thereby reducing leakage of fluid between the movable surface opening and the ports.
    Type: Application
    Filed: December 23, 2004
    Publication date: June 29, 2006
    Inventors: James Crawford Holmes, Ralph Larson
  • Publication number: 20060016652
    Abstract: A cam for a brake is provided that allows for greater brake shoe travel and thicker brake linings while providing the same or greater mechanical force as compared to conventional cams. One or more lobes of the cam include multiple portions having varying profiles in axial cross-section. The variation in the cam profiles results in a cam in which the outermost ends or tips of the lobes are longer than in conventional cams yet retain the same mechanical strength.
    Type: Application
    Filed: July 20, 2004
    Publication date: January 26, 2006
    Inventors: James Clark, James Sheets, Dominic Licavoli, Ralph Larson
  • Publication number: 20060016646
    Abstract: A disc brake rotor assembly has a central carrier with a first side and a second side. At least two wear surfaces are releasably secured to the first side and at least two wear surfaces are releasably secured to the second side. A locking mechanism disposed within the central carrier selectively engages and releases the wear surfaces.
    Type: Application
    Filed: July 22, 2004
    Publication date: January 26, 2006
    Inventors: Daniel Banks, Alan Hendershot, Thomas Runels, Ralph Larson
  • Publication number: 20050274490
    Abstract: A heat removal system includes a heatsink assembly having a base and a plurality of heat conducting folded fin members projecting from a first surface of the base and arranged to leave an open space on the first surface of the base. At least one thermally conductive slug projects from the center of the folded fin members and the folded fin members are thermally coupled to the slug. A gas circulating system is disposed over the slug and fin members projecting from the first surface of the base. The sidewall of a fin may be provided with at least one aperture. The top surface of the fin is closed, thereby permitting the fin to operate as a plenum of sorts. The bottom of the troughs may also be closed. The fins/troughs act as a plenum. A method of producing the folded fin heatsink member is also described.
    Type: Application
    Filed: November 26, 2003
    Publication date: December 15, 2005
    Inventor: Ralph Larson
  • Publication number: 20050155752
    Abstract: A thermal interface material and methods for preparing the same are disclosed. The thermal interface material comprises a copper mesh and a slurry. The copper mesh is impregnated and coated with the slurry. The slurry comprises a liquid metal alloy mixed with a plurality of thermal conductive particles. The methods include methods for preparing the thermal interface material, preparing the slurry, preparing the mesh, preparing the device for receiving the material, and for applying the thermal interface to the device.
    Type: Application
    Filed: November 19, 2004
    Publication date: July 21, 2005
    Inventors: Ralph Larson, Robert Proulx
  • Patent number: 6504841
    Abstract: Scalable Computer Interconnect (CSI) compliant multi-stage switching networks compactly electrically communicatively interconnect a large number N of electrically communicating devices, typically computers or memories, in three-dimensional space. The logic networks, including a preferred “layered network” of U.S. Pat. No. 4,833,468, are (i) rotated, (ii) folded and (iii) squared per companion U.S. Pat. No. 6,301,247 so as to assume optimal topology. The topologically-optimized switching network logic is physically realized as (i) planar panels each mounting multi-chip modules, or tiles, each having logic switchpoints each realized by switch dice, plus vias through the tiles, plus pads upon both sides of the tiles, plus connective wiring layers upon the tile, connected by (ii) multi-conductor flexible flat printed circuit cables located between the adjacent panels. System peak performance is 24 teraflops/second.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: January 7, 2003
    Assignee: Lockheed Martin Corporation
    Inventors: Brian Ralph Larson, Charles Kryzak
  • Patent number: 6301247
    Abstract: Dense physical and electrical connection of (i) flat flexible multiconductor cables of the printed circuit or ribbon types, to (ii) to spaced-parallel planar modules, particularly to switching modules containing switching chips, is realized by (1) a particular connection geometry in combination with (2) a spring clip connector. Flat flexible multiconductor cables routed through free space either in (i) “X” and, optionally also, “Z” planes, or else in (ii) “Y” planes exclusively, have their conductors' ends stripped and bent 90° so as to lie upon conductive pads, arrayed along lines angled 45° to both the “X” and “Y” planes, located on the substrates of switching modules that are within “Z” planes.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: October 9, 2001
    Assignee: Lockheed Martin Corporation
    Inventors: Brian Ralph Larson, Charles Kryzak
  • Patent number: 6215786
    Abstract: Multi-stage switching networks may be constructed and expanded from small to very large networks that are contained within a compact physical volume. This is accomplished by replication of a pre-selected network module containing switches by a rotating, folding and squaring process that substantially reduces the length of connections between switches. This geometry allows very large networks by inductively combining smaller networks into larger networks. In networks constructed with this geometry, the length of the longest connections between switches is proportional to the square root of the number of ports provided by the network.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: April 10, 2001
    Assignee: Lockheed Martin Corporation
    Inventors: Brian Ralph Larson, Steven Allen Murphy