Patents by Inventor James L. Hubbard

James L. Hubbard 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: 20200369491
    Abstract: Disclosed is a liner for a traction sheave including a top surface and a bottom surface mutually spaced on a height-wise axis (H), a front surface and a back surface mutually spaced on lengthwise axis (L), and a plurality of side surfaces including a first side surface and a second side surface mutually spaced in a widthwise axis (W), wherein in a first cross sectional profile of the plurality of side surfaces forms convergent-divergent profile.
    Type: Application
    Filed: August 14, 2020
    Publication date: November 26, 2020
    Inventors: James L. Hubbard, David R. Torlai, Peter Keyo
  • Patent number: 10766746
    Abstract: Disclosed is a liner for a traction sheave including a top surface and a bottom surface mutually spaced on a height-wise axis (H), a front surface and a back surface mutually spaced on lengthwise axis (L), and a plurality of side surfaces including a first side surface and a second side surface mutually spaced in a widthwise axis (W), wherein in a first cross sectional profile of the plurality of side surfaces forms convergent-divergent profile.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: September 8, 2020
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: James L. Hubbard, David R. Torlai, Peter Keyo
  • Publication number: 20200270100
    Abstract: Disclosed is a method for retrofitting an elevator machine with a thrust bearing, including removing, from a bearing stand, a first cover plate, providing access to an end portion of a motor shaft, securing an extension shaft against the end portion of the motor shaft, securing a thrust bearing housing against or axially offset from the bearing stand, positioning a thrust bearing in the bearing housing, wherein an inner race of the thrust bearing is securely positioned against, and axially fixed to, the extension shaft, and an outer race of the thrust bearing is securely positioned against the bearing housing, and securing a second cover plate to the bearing housing.
    Type: Application
    Filed: May 8, 2020
    Publication date: August 27, 2020
    Inventors: Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty, Bruce P. Swaybill, Jesse R. Richter, Gary P. Mendrala, Patricia Derwinski, Christopher H. Koenig
  • Patent number: 10737908
    Abstract: Disclosed is a method for retrofitting an elevator machine with a thrust bearing, including removing, from a bearing stand, a first cover plate, providing access to an end portion of a motor shaft, securing an extension shaft against the end portion of the motor shaft, securing a thrust bearing housing against or axially offset from the bearing stand, positioning a thrust bearing in the bearing housing, wherein an inner race of the thrust bearing is securely positioned against, and axially fixed to, the extension shaft, and an outer race of the thrust bearing is securely positioned against the bearing housing, and securing a second cover plate to the bearing housing.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: August 11, 2020
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty, Bruce P. Swaybill, Jesse R. Richter, Gary P. Mendrala, Patricia Derwinski, Christopher H. Koenig
  • Publication number: 20200207580
    Abstract: A method is disclosed of retrofitting an elevator machine with primary and secondary braking, the machine being disposed on a machine support frame in an elevator machine room, and engaging one or more ropes for providing selective movement of an elevator car disposed in an elevator shaft, the machine having a drive sheave including a cylindrical brake drum, and brake components including dual brake arms; the method including: removing the brake components; affixing flanged disc segments about the drum and interlocking the flanged disc segments to form a brake rotor; and mounting respective brake calipers to frame mounts for providing primary and secondary braking to the elevator machine.
    Type: Application
    Filed: March 9, 2020
    Publication date: July 2, 2020
    Inventors: Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty, Bruce P. Swaybill, Jesse R. Richter, Gary P. Mendrala, Patricia Derwinski, Christopher H. Koenig
  • Patent number: 10618775
    Abstract: A method is disclosed of retrofitting an elevator machine with primary and secondary braking, the machine being disposed on a machine support frame in an elevator machine room, and engaging one or more ropes for providing selective movement of an elevator car disposed in an elevator shaft, the machine having a drive sheave including a cylindrical brake drum, and brake components including dual brake arms; the method including: removing the brake components; affixing flanged disc segments about the drum and interlocking the flanged disc segments to form a brake rotor; and mounting respective brake calipers to frame mounts for providing primary and secondary braking to the elevator machine.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: April 14, 2020
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty, Bruce P. Swaybill, Jesse R. Richter, Gary P. Mendrala, Patricia Derwinski, Christopher H. Koenig
  • Publication number: 20200055696
    Abstract: An illustrative example embodiment of an elevator sheave liner includes a liner body having a first surface configured to engage an elevator load bearing member and an oppositely facing second surface. The liner body includes a plurality of blind holes in the second surface including at least a first blind hole and a second blind hole. The first blind hole has a first depth and the second blind hole has a second, different depth. A material of the liner body has a first thickness between the first blind hole and the first surface and a second, different thickness between the second blind hole and the first surface.
    Type: Application
    Filed: August 20, 2018
    Publication date: February 20, 2020
    Inventor: James L. Hubbard
  • Publication number: 20200055707
    Abstract: Disclosed is a liner for a traction sheave including a top surface and a bottom surface mutually spaced on a height-wise axis (H), a front surface and a back surface mutually spaced on lengthwise axis (L), and a plurality of side surfaces including a first side surface and a second side surface mutually spaced in a widthwise axis (W), wherein in a first cross sectional profile of the plurality of side surfaces forms convergent-divergent profile.
    Type: Application
    Filed: August 17, 2018
    Publication date: February 20, 2020
    Inventors: James L. Hubbard, David R. Torlai, Peter Keyo
  • Publication number: 20190337760
    Abstract: A brake disc release device, a turning device, and an elevator rescue package and method. The brake disc release device comprises: an actuating mechanism; a gear connected to a first end of the actuating mechanism; a first slider capable of sliding along a first guide piece and comprising a rack portion for engagement with the gear and a first wedge portion; a second slider capable of sliding along a second guide piece and comprising a second wedge portion for engagement with the first wedge portion of the first slider; and a pulling cable having a first end connected to the second slider and a second end connected to the brake disc.
    Type: Application
    Filed: May 2, 2019
    Publication date: November 7, 2019
    Inventors: FengKun Zhu, Hongliang Wu, James L. Hubbard
  • Patent number: 10442659
    Abstract: A brake for an elevator car includes a multiple of sequentially operated brake segments to control a timing and a rate of brake torque for deceleration of the elevator car.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: October 15, 2019
    Assignee: Otis Elevator Company
    Inventors: Amir Lotfi, Bruce P Swaybill, James L Hubbard
  • Patent number: 10273119
    Abstract: An elevator load weighing system (100) includes a brake assembly (104) configured to apply a braking force that inhibits vertical movement of an elevator car (106), and rotate in response to realizing a torque applied thereto. A position monitoring mechanism (112) is coupled to the brake assembly (104) and is configured to output a position signal in response to a rotation of the brake assembly (104). An electronic elevator control module (102) is configured to determine a zero-torque position of the brake assembly (104) prior to engaging the brake assembly (104). The electronic elevator control module (102) is further configured to detect at least one rotational brake displacement of the brake assembly (104) based on the position signal.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: April 30, 2019
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: James L. Hubbard, Ismail Agirman, Takashi Onodera
  • Patent number: 10214382
    Abstract: An elevator brake disk assembly is provided. The elevator brake disk assembly includes a brake disk which is keyed to and rotatable with a shaft of an elevator machine, a machine frame and dampers. The dampers are respectively anchored to the machine frame and biased to symmetrically hold the brake disk during rotations thereof.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: February 26, 2019
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Wei Wei, James L. Hubbard
  • Patent number: 10141817
    Abstract: In one embodiment, an electric machine includes a rotor including a plurality of permanent magnets and rotatable about a central axis of the machine. The machine further includes a stator including a cylindrical stator shell and a plurality of stator windings positioned at the stator shell and located radially inboard of the plurality of permanent magnets. A plurality of heat sink segments are secured to a radially inboard surface of the stator shell. Each heat sink segment of the plurality of heat sink segments includes a base portion located at the radially inboard surface and a plurality of fins extending radially inwardly from the base portion.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: November 27, 2018
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: James L. Hubbard, Marco Venturini, Davide Tenti
  • Patent number: 10081518
    Abstract: Embodiments are directed an elevator machine comprising: a stator assembly, and a plurality of support plates coupled to the stator assembly, wherein a respective at least one of the support plates is coupled on each end of the stator assembly and configured to enable the stator assembly to expand radially and axially in a substantially uniform manner over a range of temperatures.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: September 25, 2018
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: James L. Hubbard, Zlatko Strbuncelj
  • Publication number: 20180194593
    Abstract: An elevator brake disk assembly is provided. The elevator brake disk assembly includes a brake disk which is keyed to and rotatable with a shaft of an elevator machine, a machine frame and dampers. The dampers are respectively anchored to the machine frame and biased to symmetrically hold the brake disk during rotations thereof.
    Type: Application
    Filed: January 11, 2017
    Publication date: July 12, 2018
    Inventors: Wei Wei, James L. Hubbard
  • Patent number: 10017356
    Abstract: A guide rail for an elevator car in a hoistway includes a base connectable with a wall of the hoistway. A web portion is connected to and extends from the base to a rail tip. The web portion includes a closed cross-section defining a web cavity extending along a length of the guide rail. The closed cross-section is formed of a sheet metal material to improve the torsional stiffness of the rail. A filler strip is located in the closed web cavity to prevent damage to the closed cross-section under braking forces applied to the guide rail.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: July 10, 2018
    Assignee: OTIS ELEVATOR COMPANY
    Inventor: James L. Hubbard
  • Patent number: 10000366
    Abstract: An exemplary brake device includes a brake element configured to apply a braking force to resist rotation of an associated component. A mounting member is configured to mount the brake device to a stationary surface. The mounting member is at least partially moveable relative to the stationary surface responsive to a torque on the brake device. A sensor provides an indication of a force associated with any movement of the mounting member relative to the stationary surface responsive to the torque.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: June 19, 2018
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: James L. Hubbard, Daryl J. Marvin, Stephen R. Nichols, Harold Terry
  • Publication number: 20180141781
    Abstract: A method is disclosed of retrofitting an elevator machine with primary and secondary braking, the machine being disposed on a machine support frame in an elevator machine room, and engaging one or more ropes for providing selective movement of an elevator car disposed in an elevator shaft, the machine having a drive sheave including a cylindrical brake drum, and brake components including dual brake arms; the method including: removing the brake components; affixing flanged disc segments about the drum and interlocking the flanged disc segments to form a brake rotor; and mounting respective brake calipers to frame mounts for providing primary and secondary braking to the elevator machine.
    Type: Application
    Filed: November 18, 2016
    Publication date: May 24, 2018
    Inventors: Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty, Bruce P. Swaybill, Jesse R. Richter, Gary P. Mendrala, Patricia Derwinski, Christopher H. Koenig
  • Publication number: 20180141783
    Abstract: Disclosed is a method for retrofitting an elevator machine with a thrust bearing, including removing, from a bearing stand, a first cover plate, providing access to an end portion of a motor shaft, securing an extension shaft against the end portion of the motor shaft, securing a thrust bearing housing against or axially offset from the bearing stand, positioning a thrust bearing in the bearing housing, wherein an inner race of the thrust bearing is securely positioned against, and axially fixed to, the extension shaft, and an outer race of the thrust bearing is securely positioned against the bearing housing, and securing a second cover plate to the bearing housing.
    Type: Application
    Filed: November 22, 2016
    Publication date: May 24, 2018
    Inventors: Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty, Bruce P. Swaybill, Jesse R. Richter, Gary P. Mendrala, Patricia Derwinski, Christopher H. Koenig
  • Publication number: 20170313552
    Abstract: An elevator load weighing system (100) includes a brake assembly (104) configured to apply a braking force that inhibits vertical movement of an elevator car (106), and rotate in response to realizing a torque applied thereto. A position monitoring mechanism (112) is coupled to the brake assembly (104) and is configured to output a position signal in response to a rotation of the brake assembly (104). An electronic elevator control module (102) is configured to determine a zero-torque position of the brake assembly (104) prior to engaging the brake assembly (104). The electronic elevator control module (102) is further configured to detect at least one rotational brake displacement of the brake assembly (104) based on the position signal.
    Type: Application
    Filed: September 10, 2015
    Publication date: November 2, 2017
    Applicant: OTIS ELEVATOR COMPANY
    Inventors: James L. Hubbard, Ismail Agirman, Takashi Onodera