Patents by Inventor Glenn C. Lemmers

Glenn C. Lemmers 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).

  • ACCESSORY DRIVE GEAR HUB FOR A DIFFERENTIAL
    Publication number: 20160290473
    Abstract: Embodiments herein relate to piece-part, sub-assembly, assembly, and component levels of a differential composed of a sun gear configuration and utilized in an integrated drive generator. An integrated drive generator is a hydro-mechanical transmission that drives a synchronous salient pole generator. The integrated drive generator is a constant speed output, variable speed input transmission that includes the differential and a hydraulic unit. In general, the integrated drive generator utilizes the variable speed input from an accessory gear box of an engine to drive or control a hydraulic unit, which in turn drives or controls a churn leg member of the differential. As the differential is driven, speeds of each speed member of the differential are then summed to generate the constant speed output to drive the synchronous salient pole generator.
    Type: Application
    Filed: April 3, 2015
    Publication date: October 6, 2016
    Inventors: Glenn C. Lemmers, JR., Aaron M. Finke, Doren C. Smith, Andrew P. Grosskopf, David S. Behling
  • ROLLER BEARING OUTER RACE FOR HYDRAULIC UNIT
    Publication number: 20160281781
    Abstract: A roller bearing outer race of a hydraulic unit has a body comprising a central section having an exterior curved portion, an exterior angled portion, and a circular inner portion, wherein a central aperture defining a first axis passes through the circular inner portion of the central section, a first arm extending from a first side of the central section, and a second arm extending from a second side of the central section. A race within the circular inner portion of the central section, the race defined by a first race wall and a second race wall and wherein a thickness of the first arm and the second arm is about 0.450 inches (1.143 cm) and a radial distance of an exterior surface of the exterior curved portion from the first axis is about 0.657 inches (1.669 cm).
    Type: Application
    Filed: March 26, 2015
    Publication date: September 29, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Doren C. Smith, Edward C. Allen, Jong-Yeong Yung
  • PISTON AND SLIPPER ASSEMBLY FOR HYDRAULIC UNIT
    Publication number: 20160281691
    Abstract: A piston and slipper assembly of a hydraulic unit includes a slipper and a piston. The slipper includes a swashplate interface having a balance land and a piston ball socket extending to a ball engagement end, where a slipper length is defined between the balance land and the ball engagement end. The piston includes a piston ball member having a ball and a piston body. The ball engages with the piston ball socket. The piston body is coaxially fixed within a piston sleeve. The piston sleeve defines a piston diameter, and a piston length is defined between a centroid of the ball and a piston end face. A ratio of the piston diameter to the slipper length is between 1.35 and 1.42, and a ratio of the piston length to the piston diameter is between 2.51 and 2.55.
    Type: Application
    Filed: March 25, 2015
    Publication date: September 29, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Doren C. Smith, Mark J. Franklin
  • VARIABLE COAXIAL SHAFT FOR HYDRAULIC UNIT
    Publication number: 20160273645
    Abstract: A variable coaxial shaft for a hydraulic unit includes a shaft body having a variable input shaft interface to drive rotation of a variable input shaft of the hydraulic unit. The variable coaxial shaft also includes a differential assembly interface having a first sealing interface, a second sealing interface, and one or more lubrication ports between the first sealing interface and the second sealing interface. The differential assembly interface is configured to be driven by a differential assembly. The one or more lubrication ports provide a lubrication path to the differential assembly. A shaft length is defined between a first end of the variable input shaft interface and a second end of the differential assembly interface. A ratio of the shaft length to a shaft diameter of the shaft body is between 18.65 and 19.12.
    Type: Application
    Filed: March 20, 2015
    Publication date: September 22, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Mark J. Franklin
  • PORT PLATE ASSEMBLY FOR HYDRAULIC UNIT
    Publication number: 20160273359
    Abstract: A port plate assembly of a hydraulic unit includes a port plate and a journal bearing. The port plate includes a fixed-speed interface side having a fixed-speed interface surface, and a variable-speed interface side having a variable-speed interface surface. A plurality of kidney-shaped apertures is defined at a kidney pitch diameter about a central bore of the port plate between the fixed-speed interface surface and the variable-speed interface surface. The port plate also includes control cylinder interface formed at a control cylinder radial offset from a central axis of the central bore, where a ratio of the control cylinder radial offset to the kidney pitch diameter is between 1.629 and 1.639. The journal bearing is installed in the central bore of the port plate, where the journal bearing provides an interface for a fixed-speed shaft and a variable-speed shaft of the hydraulic unit.
    Type: Application
    Filed: March 18, 2015
    Publication date: September 22, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Doren C. Smith
  • CYLINDER BLOCK ASSEMBLY FOR HYDRAULIC UNIT
    Publication number: 20160273531
    Abstract: A cylinder block assembly of a hydraulic unit includes a cylinder block having a plurality of piston bores arranged circumferentially about a central axis of the cylinder block assembly and extending through a first face of the cylinder block. Each of the piston bores has a pitch diameter defined radially with respect to the central axis of the cylinder block assembly. A second face of the cylinder block has pressure ports that extend from the piston bores. The cylinder block assembly further includes a balance plate coupled to the second face of the cylinder block. The balance plate includes apertures that align with the pressure ports, where a cylinder block assembly outer length is defined between the first face of the cylinder block and an outer face of the balance plate. A ratio of the pitch diameter to the cylinder block assembly outer length is between 1.24 and 1.27.
    Type: Application
    Filed: March 18, 2015
    Publication date: September 22, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Mark J. Franklin
  • Roller bearing outer race for hydraulic unit
    Patent number: 9435378
    Abstract: A roller bearing outer race of a hydraulic unit has a body comprising a central section having an exterior curved portion, an exterior angled portion, and a circular inner portion, wherein a central aperture defining a first axis passes through the circular inner portion of the central section, a first arm extending from a first side of the central section, and a second arm extending from a second side of the central section. A race within the circular inner portion of the central section, the race defined by a first race wall and a second race wall and wherein a thickness of the first arm and the second arm is about 0.450 inches (1.143 cm) and a radial distance of an exterior surface of the exterior curved portion from the first axis is about 0.657 inches (1.669 cm).
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: September 6, 2016
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Kris H. Campbell, Glenn C. Lemmers, Jr., Doren C. Smith, Edward C. Allen, Jong-Yeong Yung
  • SLIPPER RETAINER BALL FOR HYDRAULIC UNIT
    Publication number: 20160208785
    Abstract: A slipper retainer ball of a hydraulic unit having an aperture passing through a body, the body having a flat bottom surface, a flat top surface, an external curved surface, and an interior profiled surface that extends in an axial direction from the bottom surface to the top surface. The interior profiled surface includes a first surface extending parallel to the axis from the bottom surface in the axial direction, a second surface extending perpendicular to the axis from the first surface and outward toward the external curved surface, a third surface extending from the second surface axially at a first angle, a fourth surface extending from the third surface in the axial direction, and a fifth surface extending from the fourth surface to the top surface at a second angle that is skew from the axis. The axial thickness of the body is about 0.471 inches.
    Type: Application
    Filed: January 16, 2015
    Publication date: July 21, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Mark J. Franklin
  • SLIPPER RETAINER FOR HYDRAULIC UNIT
    Publication number: 20160208784
    Abstract: A slipper retainer of a hydraulic unit having a circular body having a back surface and an outer edge, the circular body defining a diameter of about 2.240 inches (5.629 cm), a central aperture through a center of the circular body, the circular body having a curved surface defining an edge of the central aperture, wherein the curved surface is defined by a sphere that is centered at a point located a distance of about 0.209 inches (0.531 cm) from the back surface of the body, and a plurality of slipper apertures located between the curved surface of the circular body and the outer edge of the circular body, wherein each slipper aperture of the plurality of slipper apertures has a diameter of about 0.464 inches (1.179 cm).
    Type: Application
    Filed: January 16, 2015
    Publication date: July 21, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Doren C. Smith
  • ROLLER BEARING OUTER RACE FOR HYDRAULIC UNIT
    Publication number: 20160208853
    Abstract: A roller bearing outer race of a hydraulic unit having a body having a first part and a second part. The first part comprising a central section having an exterior curved portion, an exterior angled portion, and a circular inner portion, wherein a central aperture defining a first axis passes through the circular inner portion of the central section, a first arm extending from a first side of the central section, and a second arm extending from a second side of the central section. A race within the circular inner portion of the central section, the race defined by a first race wall and a second race wall and wherein a thickness of the first arm and the second arm is about 0.450 inches (1.143 cm) and a radial distance of an exterior surface of the exterior curved portion from the first axis is about 0.657 inches (1.669 cm).
    Type: Application
    Filed: January 16, 2015
    Publication date: July 21, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Doren C. Smith, Edward C. Allen
  • Turbomachine drive arrangement
    Patent number: 9394831
    Abstract: An example arrangement for driving a turbomachine includes an input shaft that is configured to rotate a rotor of the turbomachine through a hydraulic log and gear differential rotatable coupled to the input shaft. A motor-generator is rotatably coupled to the differential. The motor-generator has a motor mode of operation and a generator mode of operation. The motor-generator is configured to drive the input shaft through the hydraulic log and differential when the motor-generator is in the motor mode of operation. The input shaft is configured to drive the motor-generator through the hydraulic log and differential when the motor-generator is in the generator mode of operation.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: July 19, 2016
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Eric A. Brust, Glenn C. Lemmers, Jr.
  • VARIABLE WOBBLER FOR HYDRAULIC UNIT
    Publication number: 20160201697
    Abstract: A variable wobbler of a hydraulic unit includes a body having a first end and an opposite second end, the first end including an annular wall and an inner surface configured to contact a piston of the hydraulic unit. The body further includes an outer wall, an inner wall defining an inner diameter, and a conical inner wall extending from the inner wall. The variable wobbler further includes a first trunnion extending outwardly from the body and a second trunnion extending outwardly from the body.
    Type: Application
    Filed: January 14, 2015
    Publication date: July 14, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Doren C. Smith, Ted A. Martin, Jonathan C. Dell, Jong-Yeong Yung
  • FIXED WOBBLER FOR HYDRAULIC UNIT
    Publication number: 20160201698
    Abstract: A fixed wobbler of a hydraulic unit includes a body having a first end and an opposite second end, the first end defining a first surface, and the second end defining a second surface oriented at an angle relative to the first surface, the body having an outer diameter and an inner wall defining an inner diameter, wherein the outer diameter is approximately 2.1655+0.0000?0.0007 inches (5.5004+0.000?0.0018 cm), and wherein the inner diameter is approximately 1.043±0.003 inches (2.6492±0.0076 cm).
    Type: Application
    Filed: January 14, 2015
    Publication date: July 14, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Doren C. Smith, Jonathan C. Dell, Jong-Yeong Yung, Ted A. Martin
  • FIXED COAXIAL SHAFT FOR A HYDRAULIC UNIT
    Publication number: 20160177725
    Abstract: A fixed coaxial shaft of a hydraulic unit is provided including a body having a first end and a second opposite end. A plurality of first splines is formed in an exterior surface of the body adjacent the first end and a plurality of second splines is formed in the exterior surface of the body adjacent the second end. The plurality of first splines and the plurality of second splines are substantially identical. The body of the shaft has an outer diameter of about 0.640±0.0005 inches (1.626±0.0013 centimeters), an inner diameter of about 0.517±0.010 inches (1.313±0.0254 centimeters), and an overall length of about 2.678±0.005 inches (6.802±0.0127 centimeters).
    Type: Application
    Filed: December 19, 2014
    Publication date: June 23, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Doren C. Smith
  • TAIL CONE GENERATOR WITH INTEGRAL SPEED INCREASING GEARBOX
    Publication number: 20160149469
    Abstract: A gas turbine engine is provided, comprising a tail cone and a low-pressure spool outside the tail cone. An input shaft may be coupled to the low-pressure spool and inside the tail cone. A differential may be coupled to the input shaft and inside the tail cone. A generator may be coupled to the differential and also disposed inside the tail cone. An oil pump may be configured to pump oil through the generator to the differential. A generator assembly is also provided. The generator assembly may comprise an input shaft, a differential coupled to the input shaft, a rotating transfer tube coupled to the differential, a generator coupled to rotating transfer tube, and an oil pump configured to pump oil from the generator, through the rotating transfer tube, and into the differential.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 26, 2016
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Glenn C. Lemmers, Todd A. Spierling
  • THERMAL DISCONNECT ASSEMBLY WITH FLIGHT CONTROL PERMANENT MAGNET GENERATOR FOR INTEGRATED DRIVE GENERATOR
    Publication number: 20160146264
    Abstract: A thermal disconnect assembly for an integrated drive generator includes an input shaft, an output shaft, a eutectic solder, and a disconnect clutch. The input shaft is driven by an external mechanical source. The output shaft is coupled to the input shaft through a disconnect clutch in a coupled state, is driven by the input shaft and rotates with the input shaft in the coupled state. The eutectic solder is configured to hold the output shaft in the coupled state and melt upon reaching a threshold temperature. The disconnect clutch is configured to urge the output shaft toward a decoupled state upon melting of the eutectic solder such that the output shaft does not rotate with the input shaft in the decoupled state.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 26, 2016
    Inventor: Glenn C. Lemmers, JR.
  • FIXED SHAFT FOR HYDRAULIC UNIT
    Publication number: 20160146243
    Abstract: A fixed shaft of a hydraulic unit is provided including a body having a first end and a second opposite end. A first flange and a substantially identical second flange are integrally formed with the body of the shaft adjacent the second end. The second end of the body has an outer diameter of 0.990±0.005 inches (2.515±0127 cm). The first and second flange each have an axial length parallel to a longitudinal axis of the body of about 0.085±0.010 inches (0.216±0.0254 cm). The first and second flange having an outer diameter of 1.359 inches (3.452 cm). The first flange and the second flange are separated by from one another by a distance of about 0.3162 inches (0.8031 cm). The portion of the body between the first flange and the second flange has an outer diameter of about 1.2013 inches (3.051 cm).
    Type: Application
    Filed: November 24, 2014
    Publication date: May 26, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Mark J. Franklin
  • VARIABLE SHAFT FOR HYDRAULIC UNIT
    Publication number: 20160146244
    Abstract: A variable shaft of a hydraulic unit is provided including a body having a first end and a second opposite end. A first flange and a substantially identical second flange are integrally formed with the body of the shaft adjacent the second end. The first flange and the second flange each have an axial length parallel to a longitudinal axis of the body of about 0.085±0.010 inches (0.216±0.0254 cm). The first flange and the second flange have an outer diameter of 1.359 inches (3.452 cm). The first flange and the second flange are separated by from one another by a distance of about 0.3162 inches (0.8031 cm). A portion of the body between the first flange and the second flange has an outer diameter of about 1.2013 inches (3.051 cm).
    Type: Application
    Filed: November 24, 2014
    Publication date: May 26, 2016
    Inventors: Kris H. Campbell, Glenn C. Lemmers, JR., Mark J. Franklin
  • PRESSURE-REGULATING VALVES
    Publication number: 20160116074
    Abstract: A pressure-regulating valve assembly includes a sleeve body and a spool. The sleeve body has an interior surface and a sense port. The spool has an external surface and is slideably received within the sleeve body such that the external spool surface and the sleeve body interior surface define therebetween a plurality of sleeve body chambers. A first of the sleeve body interior chambers is a deadheaded chamber in fluid communication with the environment external to the sleeve body through the sense port for controlling pressure of fluid traversing the pressure-regulating valve assembly.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 28, 2016
    Inventor: Glenn C. Lemmers, JR.
  • Rotating rectifier assembly and method
    Patent number: 9154046
    Abstract: A rectifier assembly and method are provided. The rectifier assembly includes an annular bus bar including an electrically conductive material, and an insulator ring receiving the annular bus bar. The insulator ring defines radially-extending resistor pockets and diode pockets therein. The rectifier assembly also includes resistors disposed in the resistor pockets and electrically connected with the annular bus bar, and diodes disposed in the diode pockets and electrically connected with the annular bus bar. The rectifier assembly also includes an outer housing receiving the annular bus bar and the insulator ring, such that the insulator ring is positioned radially between the annular bus bar and the outer housing.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: October 6, 2015
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventors: Joseph Paul Krause, Dhaval Patel, Glenn C. Lemmers, Jr., Mark J. Franklin