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).
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Patent number: 11021054Abstract: 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: GrantFiled: February 8, 2017Date of Patent: June 1, 2021Assignee: MAGNA POWERTRAIN OF AMERICA, INC.Inventors: Bradley Ketchel, Wade Smith, Ralph Larson, Ryan Strand
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Patent number: 10851886Abstract: 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: GrantFiled: August 22, 2019Date of Patent: December 1, 2020Assignee: MAGNA POWERTRAIN OF AMERICA INC.Inventors: Michael Bujold, Ralph Larson
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Patent number: 10759274Abstract: 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: GrantFiled: February 8, 2017Date of Patent: September 1, 2020Assignee: MAGNA POWERTRAIN OF AMERICA, INC.Inventors: Bradley Ketchel, Wade Smith, Ralph Larson, Ryan Strand
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Publication number: 20200063856Abstract: 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: ApplicationFiled: August 22, 2019Publication date: February 27, 2020Inventors: Michael Bujold, Ralph Larson
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Publication number: 20190031023Abstract: 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: ApplicationFiled: February 8, 2017Publication date: January 31, 2019Inventors: Bradley Ketchel, Wade Smith, Ralph Larson, Ryan Strand
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Publication number: 20190024772Abstract: 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: ApplicationFiled: February 8, 2017Publication date: January 24, 2019Applicant: MAGNA POWERTRAIN OF AMERICA, INC.Inventors: Bradley Ketchel, Wade Smith, Ralph Larson, Ryan Strand
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Publication number: 20120047644Abstract: 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: ApplicationFiled: August 30, 2010Publication date: March 1, 2012Inventor: Ralph Larson
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Publication number: 20070131502Abstract: 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: ApplicationFiled: January 25, 2007Publication date: June 14, 2007Inventors: James Clark, Dominic Licavoli, James Sheets, Ralph Larson
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Patent number: 7159698Abstract: 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: GrantFiled: July 22, 2004Date of Patent: January 9, 2007Assignee: Bendix Spicer Foundation Brake, LLCInventors: Daniel E. Banks, Alan Hendershot, Thomas L. Runels, Ralph Larson
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Publication number: 20060181860Abstract: 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: ApplicationFiled: February 13, 2006Publication date: August 17, 2006Inventor: Ralph Larson
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Publication number: 20060137986Abstract: 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: ApplicationFiled: December 23, 2004Publication date: June 29, 2006Inventors: James Crawford Holmes, Ralph Larson
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Publication number: 20060016646Abstract: 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: ApplicationFiled: July 22, 2004Publication date: January 26, 2006Inventors: Daniel Banks, Alan Hendershot, Thomas Runels, Ralph Larson
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Publication number: 20060016652Abstract: 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: ApplicationFiled: July 20, 2004Publication date: January 26, 2006Inventors: James Clark, James Sheets, Dominic Licavoli, Ralph Larson
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Publication number: 20050274490Abstract: 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: ApplicationFiled: November 26, 2003Publication date: December 15, 2005Inventor: Ralph Larson
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Publication number: 20050155752Abstract: 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: ApplicationFiled: November 19, 2004Publication date: July 21, 2005Inventors: Ralph Larson, Robert Proulx
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Patent number: 5560423Abstract: A heat pipe which is flexible and thus conformable to the space in which it is to be deployed consists of two or three layers, namely, a relatively thin, highly conductive plate as a bottom layer, a plastic sheet as a top layer and wicking as an optional middle layer. The bottom plate has a relatively high modulus of elasticity and it is stiff, yet ductile. It is preferably made of metal, such as aluminum, or a plastic sheet or plate. To manufacture the heat pipe, the bottom and top layers are aligned, with the wicking between them, and sealed together around three edges. Liquid coolant is then added and the fourth edge is sealed. The sealing is preferably performed by heat sealing. The heat pipe may include heat-dissipating fins or ridges on the end of the pipe that operates as a condenser. The opposing end of the pipe, which acts as the evaporator, is positioned proximate to a heat-generating component.Type: GrantFiled: July 28, 1994Date of Patent: October 1, 1996Assignee: Aavid Laboratories, Inc.Inventors: Ralph Larson, Richard J. Phillips
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Patent number: 4894709Abstract: A microchannel heat sink used to cool a high power electronic device such as an integrated circuit comprising a plurality of channels in close thermal contact to the integrated circuit and through which a liquid is passed to create either a developing laminar flow or a turbulent flow. The turbulent flow may be either developing or fully developed. The heat sink features a compensation heater surrounding the integrated circuit and heated at the same rate as the integrated circuit to thereby provide a more uniform temperature at the perimeter of the integrated circuit.Type: GrantFiled: March 9, 1988Date of Patent: January 16, 1990Assignee: Massachusetts Institute of TechnologyInventors: Richard J. Phillips, Leon R. Glicksman, Ralph Larson
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Patent number: 4148477Abstract: A simulated ski slope slide including an elongate forwardly and downwardly inclined deck having a flat top surface and elongate endless carrier belt with a fibrous pile surface engaged about the deck to extend longitudinally thereof and driven so that its upper portion moves continuously rearwardly and upwardly relative to the top surface of the deck, a bed of flaked ice inter-engaged with the pile surface of the carrier belt and an elongate endless retaining belt arranged to occur adjacent the lower and end portions of the carrier belt to engage the bed of ice and hold said bed of ice engaged with the carrier belt when the bed of ice occurs at the lower and end portions of the carrier belt.Type: GrantFiled: January 10, 1978Date of Patent: April 10, 1979Inventor: Ralph Larson