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).
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Patent number: 11718501Abstract: An illustrative example embodiment of an elevator sheave wear monitoring device includes at least one detector situated to detect a position of elevator roping that is indicative of a condition of a sheave that the roping at least partially wraps around, the at least one detector providing an output corresponding to the detected position of the elevator roping and indicating an amount of wear of the sheave that exceeds at least one threshold.Type: GrantFiled: April 6, 2020Date of Patent: August 8, 2023Assignee: OTIS ELEVATOR COMPANYInventors: Kyle B. Martin, James L. Hubbard
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Publication number: 20230242377Abstract: A turning device includes a hand disc coupled to an input shaft; a reduction gear set accommodated in a housing and connected to the input shaft and an output shaft; and a shaft connector for connecting the output shaft and a motor spindle.Type: ApplicationFiled: April 7, 2023Publication date: August 3, 2023Inventors: FengKun Zhu, Hongliang Wu, James L. Hubbard
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Patent number: 11667495Abstract: 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: GrantFiled: May 2, 2019Date of Patent: June 6, 2023Assignee: OTIS ELEVATOR COMPANYInventors: FengKun Zhu, Hongliang Wu, James L. Hubbard
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Patent number: 11492230Abstract: 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: GrantFiled: August 20, 2018Date of Patent: November 8, 2022Assignee: OTIS ELEVATOR COMPANYInventor: James L. Hubbard
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Patent number: 11377323Abstract: 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: GrantFiled: March 9, 2020Date of Patent: July 5, 2022Assignee: OTIS ELEVATOR COMPANYInventors: 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
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Patent number: 11299374Abstract: 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: GrantFiled: May 8, 2020Date of Patent: April 12, 2022Assignee: OTIS ELEVATOR COMPANYInventors: 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
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Patent number: 11254544Abstract: 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: GrantFiled: August 14, 2020Date of Patent: February 22, 2022Assignee: OTIS ELEVATOR COMPANYInventors: James L. Hubbard, David R. Torlai, Peter Keyo
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Publication number: 20220033219Abstract: An elevator system including: an elevator car configured to travel through an elevator shaft; a first guide beam extending vertically through the elevator shaft, the first guide beam including a first surface and a second surface opposite the first surface; a beam climber system configured to move the elevator car through the elevator shaft, the beam climber system including: a first wheel in contact with the first surface; and a first electric motor configured to rotate the first wheel; a first motor brake mechanically connected to the first electric motor, the first motor brake configured to slow the elevator car; and a brake condition based monitoring system configured to detect when the first motor brake is dragging.Type: ApplicationFiled: July 31, 2020Publication date: February 3, 2022Inventors: Randy Roberts, Edward Piedra, Sam Thieu Wong, James L. Hubbard
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Publication number: 20210309486Abstract: An illustrative example embodiment of an elevator sheave wear monitoring device includes at least one detector situated to detect a position of elevator roping that is indicative of a condition of a sheave that the roping at least partially wraps around, the at least one detector providing an output corresponding to the detected position of the elevator roping and indicating an amount of wear of the sheave that exceeds at least one threshold.Type: ApplicationFiled: April 6, 2020Publication date: October 7, 2021Inventors: Kyle B. MARTIN, James L. HUBBARD
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Publication number: 20200369491Abstract: 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: ApplicationFiled: August 14, 2020Publication date: November 26, 2020Inventors: James L. Hubbard, David R. Torlai, Peter Keyo
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Patent number: 10766746Abstract: 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: GrantFiled: August 17, 2018Date of Patent: September 8, 2020Assignee: OTIS ELEVATOR COMPANYInventors: James L. Hubbard, David R. Torlai, Peter Keyo
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Publication number: 20200270100Abstract: 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: ApplicationFiled: May 8, 2020Publication date: August 27, 2020Inventors: 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
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Patent number: 10737908Abstract: 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: GrantFiled: November 22, 2016Date of Patent: August 11, 2020Assignee: OTIS ELEVATOR COMPANYInventors: 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
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Publication number: 20200207580Abstract: 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: ApplicationFiled: March 9, 2020Publication date: July 2, 2020Inventors: 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
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Patent number: 10618775Abstract: 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: GrantFiled: November 18, 2016Date of Patent: April 14, 2020Assignee: OTIS ELEVATOR COMPANYInventors: 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
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Publication number: 20200055696Abstract: 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: ApplicationFiled: August 20, 2018Publication date: February 20, 2020Inventor: James L. Hubbard
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Publication number: 20200055707Abstract: 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: ApplicationFiled: August 17, 2018Publication date: February 20, 2020Inventors: James L. Hubbard, David R. Torlai, Peter Keyo
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Publication number: 20190337760Abstract: 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: ApplicationFiled: May 2, 2019Publication date: November 7, 2019Inventors: FengKun Zhu, Hongliang Wu, James L. Hubbard
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Patent number: 10442659Abstract: 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: GrantFiled: June 27, 2016Date of Patent: October 15, 2019Assignee: Otis Elevator CompanyInventors: Amir Lotfi, Bruce P Swaybill, James L Hubbard
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Patent number: 10273119Abstract: 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: GrantFiled: September 10, 2015Date of Patent: April 30, 2019Assignee: OTIS ELEVATOR COMPANYInventors: James L. Hubbard, Ismail Agirman, Takashi Onodera