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公开(公告)号：US20200370591A1
公开(公告)日：2020-11-26
申请号：US16416830
申请日：2019-05-20
Applicant: Hamilton Sundstrand Corporation
Inventor： Yiwei Jiang , Michael R. Blewett , Edward W. Goy
Abstract: An assembly for a coupling together rotatable components according to an example of the present disclosure includes, among other things, a rotor shaft extending along a centerline axis, the rotor shaft defining an inner bore extending from an axial end of the rotor shaft, a gear mounted on an outer diameter of the rotor shaft, a lock nut threadedly engaged with the outer diameter of the rotor shaft such that the lock nut abuts against an axial end face of the gear, and a retainer including a step portion extending from a head portion and including a projection portion extending from the step portion. The projection portion is insertable into the inner bore to bias the lock nut against the axial end face of the gear, and the step portion is dimensioned to establish an interference fit with the rotor shaft along the inner bore. A starter assembly and a method of assembly are also disclosed.
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公开(公告)号：US20170260910A1
公开(公告)日：2017-09-14
申请号：US15069454
申请日：2016-03-14
Applicant: Hamilton Sundstrand Corporation
Inventor： Yiwei Jiang , Michael R. Blewett
IPC: F02C7/32 , F16H57/025
CPC classification number: F02C7/32 , B64D2027/268 , F01D25/28 , F05D2260/30 , F05D2260/311 , F05D2260/96 , F16H57/025
Abstract: A gearbox mounting link between a gas turbine engine structure and a gearbox mounting location comprises two engine attachment brackets secured to an engine structure, and attachment plate rotatably attached between the engine attachment brackets, and a secondary retention sleeve and fastener. The attachment plate includes a fusibly separable section configured to attach to the gearbox, a static section, and a shear necks connecting the statis section to the fusibly separable section. The secondary retention sleeve is supported by and secured to the static section. The secondary retention fastener is supported by the secondary retention sleeve, and is disposed through an oversized fastener passage through the fusibly separable section, thereby loosely retaining the fusibly separable section in at least one of the two degrees of freedom in the event of a load sufficient to break the shear necks, separating the fusible separable section from the static section.
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公开(公告)号：US10215100B2
公开(公告)日：2019-02-26
申请号：US15069431
申请日：2016-03-14
Applicant: Hamilton Sundstrand Corporation
Inventor： Yiwei Jiang , Michael R. Blewett
IPC: F02C7/32 , F16H57/025
Abstract: A mounting link between a gas turbine engine and a gearbox comprises a gearbox arm, a fusibly breakable bolt, and two engine attachment brackets. The gearbox arm attaches to the gearbox, and extends along an axis defining a first dimension between the gas turbine engine structure and the gearbox. The fusibly breakable bolt extends through the gearbox arm, and has a central shear section that mates with the gearbox arm. The engine attachment brackets have primary and secondary retention annuli, and attachment flanges that attach to the gas turbine engine structure. The primary retention annuli are each concentric to an outer section of the fusibly breakable bolt, and have a radius selected to tightly retain those outer sections in the first dimension. The secondary retention annuli are each concentric to a portion of the shear section, and have a larger radius to loosely retain the shear section.
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公开(公告)号：US10132245B2
公开(公告)日：2018-11-20
申请号：US15137276
申请日：2016-04-25
Applicant: Hamilton Sundstrand Corporation
Inventor： Yiwei Jiang , Michael R. Blewett
IPC: F02C7/32 , F16F15/02 , F16H57/025
Abstract: A link assembly between an engine and a gearbox includes a male link coupled to the engine or the gearbox, a female link coupled to the engine or the gearbox, wherein the female link receives the male link to allow translation of the male link relative to the female link and to form a radial interface, wherein the radial interface dampens translation of the male link relative to the female link, and a pin releasably coupled to the male link and the female link to selectively retain the male link and the female link.
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公开(公告)号：US10012149B2
公开(公告)日：2018-07-03
申请号：US15069399
申请日：2016-03-14
Applicant: Hamilton Sundstrand Corporation
Inventor： Yiwei Jiang , Michael R. Blewett
IPC: F16H57/02 , F02C7/32 , F16H57/025
CPC classification number: F02C7/32 , F01D21/045 , F05D2230/60 , F05D2250/42 , F05D2260/30 , F05D2260/311 , F05D2260/36 , F05D2260/96 , F16H57/025
Abstract: A gearbox mounting link between a gas turbine engine structure and a gearbox mounting location comprises an engine attachment piece rotatably secured to the gas turbine engine structure. The engine attachment piece comprises first and second plates extending in parallel planes and separated by a gap having a gap width. A gearbox attachment piece is situated between the parallel plates, and is secured to the gearbox. A breakable primary retention fastener extends snugly through the parallel plates and the gearbox attachment piece, thereby rigidly retaining the gearbox with respect to the gas turbine engine in two degrees of freedom so long as the breakable primary retention fastener remains intact. A durable secondary retention fastener extending snugly through the parallel plates, and extends with clearance through the gearbox attachment piece via an oversized fastener passage, thereby constraining the gearbox attachment piece in the event that the breakable primary retention fastener breaks.
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Patent Agency Ranking
公开(公告)号：US11199106B1
公开(公告)日：2021-12-14
申请号：US16999497
申请日：2020-08-21
Applicant: Hamilton Sundstrand Corporation
Inventor： Yiwei Jiang , Michael D. Schelonka , Erik D. LeBeau
Abstract: A shroud having an annular member extending along an axis from a first end to a second end. The annular member has an inside surface radially inward from an outside surface that diverges from the first end towards the second end relative to the axis. The shroud further includes a flange that extends radially outward from the outside surface and a recess, each located at the second end. The recess extends radially outward from the inside surface and circumferentially about the axis. An axial extent of the recess at least partially coincides with an axial extent of the flange.
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公开(公告)号：US10975772B2
公开(公告)日：2021-04-13
申请号：US16269956
申请日：2019-02-07
Applicant: HAMILTON SUNDSTRAND CORPORATION
Inventor： Yiwei Jiang , James Vandung Nguyen , Edward W. Goy
Abstract: A starter for a gas turbine engine includes a rotor shaft rotatable about an axis and includes an inner bore extending from an axial end of the rotor shaft with respect to the axis. A sun gear is on the rotor shaft. A lock nut is received against an axial end face of the sun gear and threadedly engaged with an outer diameter of the rotor shaft. A retainer is positioned to bias the nut against the axial end face and includes a projection portion threadedly engaged with the rotor shaft in the inner bore. A bolt through the projection portion is threadedly engaged with the rotor shaft.
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公开(公告)号：US10006373B2
公开(公告)日：2018-06-26
申请号：US15069454
申请日：2016-03-14
Applicant: Hamilton Sundstrand Corporation
Inventor： Yiwei Jiang , Michael R. Blewett
IPC: F02C7/32 , F16H57/025 , F01D25/28 , B64D27/26
CPC classification number: F02C7/32 , B64D2027/268 , F01D25/28 , F05D2260/30 , F05D2260/311 , F05D2260/96 , F16H57/025
Abstract: A gearbox mounting link between a gas turbine engine structure and a gearbox mounting location comprises two engine attachment brackets secured to an engine structure, and attachment plate rotatably attached between the engine attachment brackets, and a secondary retention sleeve and fastener. The attachment plate includes a fusibly separable section configured to attach to the gearbox, a static section, and a shear necks connecting the statis section to the fusibly separable section. The secondary retention sleeve is supported by and secured to the static section. The secondary retention fastener is supported by the secondary retention sleeve, and is disposed through an oversized fastener passage through the fusibly separable section, thereby loosely retaining the fusibly separable section in at least one of the two degrees of freedom in the event of a load sufficient to break the shear necks, separating the fusible separable section from the static section.
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公开(公告)号：US20170260908A1
公开(公告)日：2017-09-14
申请号：US15069420
申请日：2016-03-14
Applicant: Hamilton Sundstrand Corporation
Inventor： Yiwei Jiang , Michael R. Blewett
IPC: F02C7/32 , F16H57/025 , F16H57/028
CPC classification number: F02C7/32 , B64D2027/268 , F01D25/28 , F05D2260/30 , F05D2260/311 , F05D2260/36 , F05D2260/96 , F16H57/025 , F16H57/028
Abstract: A mounting link between an engine and a gearbox comprises an engine attachment piece, a gearbox attachment piece, and primary and secondary retention fasteners. The engine attachment piece is rotatably secured to the engine, and the gearbox attachment piece is rotatably secured to the gearbox. The primary retention fastener rigidly constrains the gearbox attachment piece with respect to the engine attachment piece in a single degree of freedom, but is configured to shear at a breakpoint load. The secondary retention fastener constrains the gearbox attachment piece loosely with respect to the engine attachment piece, and can withstand the breakpoint load. The gearbox attachment piece and engine attachment piece abut in a friction fit that provides Coulomb damping.
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公开(公告)号：US11078951B2
公开(公告)日：2021-08-03
申请号：US16416830
申请日：2019-05-20
Applicant: Hamilton Sundstrand Corporation
Inventor： Yiwei Jiang , Michael R. Blewett , Edward W. Goy
Abstract: An assembly for a coupling together rotatable components according to an example of the present disclosure includes, among other things, a rotor shaft extending along a centerline axis, the rotor shaft defining an inner bore extending from an axial end of the rotor shaft, a gear mounted on an outer diameter of the rotor shaft, a lock nut threadedly engaged with the outer diameter of the rotor shaft such that the lock nut abuts against an axial end face of the gear, and a retainer including a step portion extending from a head portion and including a projection portion extending from the step portion. The projection portion is insertable into the inner bore to bias the lock nut against the axial end face of the gear, and the step portion is dimensioned to establish an interference fit with the rotor shaft along the inner bore. A starter assembly and a method of assembly are also disclosed.
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