Patents by Inventor David R. Torlai
David R. Torlai 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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Publication number: 20240149516Abstract: A load-bearing elevator suspension member includes a plurality of tension members and a compressible jacket at least partially encasing the plurality of tension members. The jacket includes a jacket base material mixed with a corrosion inhibitor that establishes a corrosion-inhibiting coating on the tension members. A method of making such a load-bearing elevator suspension member includes mixing the corrosion inhibitor into a thermoplastic jacket material and applying the resulting mixture to bare steel tension members. As the corrosion inhibitor in the mixture contacts the tension members, the corrosion inhibitor establishes a corrosion-inhibiting coating on the tension members.Type: ApplicationFiled: November 9, 2022Publication date: May 9, 2024Inventors: Brad GUILANI, David R. TORLAI
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Publication number: 20240101392Abstract: A braking mechanism includes a wedge selectably engageable with a guide rail, and a frictional surface defined on the wedge configured for selective engagement with the guide rail in an overspeed condition. The frictional surface includes a friction coating of polycrystalline blocky diamond material. An elevator system includes an elevator car, a guide rail along which the elevator car travels, and a braking mechanism located at the elevator car and selectably engageable with the guide rail to slow or stop travel of the elevator car along the guide rail. The braking mechanism includes a wedge having a frictional surface configured for selective engagement with the guide rail in an overspeed condition. The frictional surface includes a friction coating of polycrystalline blocky diamond material.Type: ApplicationFiled: September 27, 2022Publication date: March 28, 2024Inventors: Girija Marathe, David R. Torlai
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Patent number: 11261062Abstract: Disclosed is a modular sheave unit including: a bearing that includes an outer race, an inner race and one or more rolling elements therebetween; and a sleeve that includes one or both of: an outer sleeve axially surrounding the outer race, the outer sleeve including an outer surface defining a groove, the groove configured to receive a belt; and an inner sleeve axially surrounded by the inner race and disposed between the inner race and a mandrel.Type: GrantFiled: May 3, 2019Date of Patent: March 1, 2022Assignee: OTIS ELEVATOR COMPANYInventors: David R. Torlai, Jun Ma
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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: 20210362981Abstract: An elevator sheave includes a sheave body and a coating on a surface of the sheave body. The coating includes microcracks and a filler in the microcracks. A method of making a sheave for an elevator system is also disclosed.Type: ApplicationFiled: August 6, 2021Publication date: November 25, 2021Inventors: Xiaoyuan CHANG, David R. Torlai
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Patent number: 11111108Abstract: An elevator sheave includes a sheave body and a coating on a surface of the sheave body. The coating includes microcracks and a filler in the microcracks. A method of making a sheave for an elevator system is also disclosed.Type: GrantFiled: May 4, 2018Date of Patent: September 7, 2021Assignee: OTIS ELEVATOR COMPANYInventors: Xiaoyuan Chang, David R. Torlai
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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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Publication number: 20200346899Abstract: Disclosed is a modular sheave unit including: a bearing that includes an outer race, an inner race and one or more rolling elements therebetween; and a sleeve that includes one or both of: an outer sleeve axially surrounding the outer race, the outer sleeve including an outer surface defining a groove, the groove configured to receive a belt; and an inner sleeve axially surrounded by the inner race and disposed between the inner race and a mandrel.Type: ApplicationFiled: May 3, 2019Publication date: November 5, 2020Inventors: David R. Torlai, Jun Ma
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Patent number: 10822202Abstract: A unitized segmented sheave assembly is provided. The unitized segmented sleeve assembly includes sheaves arrayed in a side-to-side formation and respectively comprising bearings and an exterior running surface and spacers interleaved between neighboring sheaves. Respective inner races of the bearings of each sheave and respective interior portions of each spacer cooperatively form an interior annular surface. The unitized segmented sheave assembly further includes a sleeve disposable in abutment with the interior annular surface.Type: GrantFiled: July 13, 2018Date of Patent: November 3, 2020Assignee: OTIS ELEVATOR COMPANYInventors: Austin Lee, David R. Torlai, Jun Ma
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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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Patent number: 10647547Abstract: An elevator maintenance kit is provided for surfacing an elevator sheave that engages with an elevator tension member. The kit includes a substrate with an adhesive backing, and a substrate applicator that is operable to apply the substrate to the sheave as the sheave is rotated. The adhesive backing is operable to attach the substrate to the sheave during the sheave rotation.Type: GrantFiled: July 10, 2017Date of Patent: May 12, 2020Assignee: Otis Elevator CompanyInventors: Xiaoyuan Chang, David R. Torlai, Peter Keyo, Lance L. Lavender, Hong Yang
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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: 20190337770Abstract: An elevator sheave includes a sheave body and a coating on a surface of the sheave body. The coating includes microcracks and a filler in the microcracks. A method of making a sheave for an elevator system is also disclosed.Type: ApplicationFiled: May 4, 2018Publication date: November 7, 2019Inventors: Xiaoyuan Chang, David R. Torlai
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Publication number: 20190047826Abstract: A unitized segmented sheave assembly is provided. The unitized segmented sleeve assembly includes sheaves arrayed in a side-to-side formation and respectively comprising bearings and an exterior running surface and spacers interleaved between neighboring sheaves. Respective inner races of the bearings of each sheave and respective interior portions of each spacer cooperatively form an interior annular surface. The unitized segmented sheave assembly further includes a sleeve disposable in abutment with the interior annular surface.Type: ApplicationFiled: July 13, 2018Publication date: February 14, 2019Inventors: Austin Lee, David R. Torlai, Jun Ma
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Patent number: 10023432Abstract: A method of making a guide rail for an elevator system includes providing a metallic guide rail having a base portion and a blade portion extending from the base portion The blade portion includes one or more guide surfaces interactive with a safety brake of the elevator system. A protective layer is applied to the guide rail for corrosion protection and a perimeter of the protective layer is adhered to the guide rail to seal the guide surfaces from corrosive elements, while not adhering the protective layer to the guide surfaces.Type: GrantFiled: November 8, 2013Date of Patent: July 17, 2018Assignee: OTIS ELEVATOR COMPANYInventors: Xiaoyuan Chang, David R. Torlai
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Publication number: 20170305721Abstract: An elevator maintenance kit is provided for surfacing an elevator sheave that engages with an elevator tension member. The kit includes a substrate with an adhesive backing, and a substrate applicator that is operable to apply the substrate to the sheave as the sheave is rotated. The adhesive backing is operable to attach the substrate to the sheave during the sheave rotation.Type: ApplicationFiled: July 10, 2017Publication date: October 26, 2017Inventors: Xiaoyuan Chang, David R. Torlai, Peter Keyo, Lance L. Lavender, Hong Yang
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Patent number: 9701517Abstract: An elevator maintenance kit is provided for surfacing an elevator sheave that engages with an elevator tension member. The kit includes a substrate with an adhesive backing, and a substrate applicator that is operable to apply the substrate to the sheave as the sheave is rotated. The adhesive backing is operable to attach the substrate to the sheave during the sheave rotation.Type: GrantFiled: May 4, 2012Date of Patent: July 11, 2017Assignee: Otis Elevator CompanyInventors: Xiaoyuan Chang, David R. Torlai, Peter Keyo, Lance L. Lavender, Hong Yang
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Publication number: 20160280512Abstract: A method of making a guide rail for an elevator system includes providing a metallic guide rail having a base portion and a blade portion extending from the base portion The blade portion includes one or more guide surfaces interactive with a safety brake of the elevator system. A protective layer is applied to the guide rail for corrosion protection and a perimeter of the protective layer is adhered to the guide rail to seal the guide surfaces from corrosive elements, while not adhering the protective layer to the guide surfaces.Type: ApplicationFiled: November 8, 2013Publication date: September 29, 2016Inventors: Xiaoyuan CHANG, David R. TORLAI
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Publication number: 20150210510Abstract: An elevator maintenance kit is provided for surfacing an elevator sheave that engages with an elevator tension member. The kit includes a substrate with an adhesive backing, and a substrate applicator that is operable to apply the substrate to the sheave as the sheave is rotated. The adhesive backing is operable to attach the substrate to the sheave during the sheave rotation.Type: ApplicationFiled: May 4, 2012Publication date: July 30, 2015Applicant: OTIS ELEVATOR COMPANYInventors: Xiaoyuan Chang, David R. Torlai, Peter Keyo, Lance L. Lavender, Hong Yang
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Publication number: 20130195626Abstract: A clutch bearing (34) for a transportation refrigeration unit includes one or more rolling elements (38) supportive of one or more components of an electromagnetic clutch for a transportation refrigeration unit, and a plurality of bearing races (36) configured to retain the one or more rolling elements. The bearing races include a coating of thin dense chromium to reduce corrosion and/or damage of the clutch bearing. A transportation refrigeration unit includes a power source (12) and a blower (32) of the transportation refrigeration unit. An electromagnetic clutch (14) is operably connected to the power source and the blower (132) and includes a rotor (16) positioned at a central axis and an armature (18) positioned at the central axis and having an axial air gap (22) to the rotor when the clutch is in a disengaged position. A clutch bearing is located at the central axis and is supportive of the rotor.Type: ApplicationFiled: September 28, 2011Publication date: August 1, 2013Applicant: Carrier CorporationInventors: Brian Tyler White, David R. Torlai