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公开(公告)号：US20210331721A1
公开(公告)日：2021-10-28
申请号：US17223868
申请日：2021-04-06
摘要： A railroad freight car coupling system utilizing purely mechanical cushioning assemblies at opposed ends of the car. Each cushioning assembly includes an elongated draft gear assembly including two individually operable and axially spaced assemblies for absorbing both buff and draft forces. Each draft gear assembly includes an axially elongated and hollow metal housing with a first open end and a second open end disposed in longitudinally spaced relation relative to each other. The draft gear assembly is provided with first and second spring biased assemblies at opposed open ends of the housing for absorbing, storing and returning energy directed against a railroad freight car with which the draft gear assembly is arranged in operable combination.
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公开(公告)号：US11560162B2
公开(公告)日：2023-01-24
申请号：US16856592
申请日：2020-04-23
摘要： An energy absorption system for a railcar having an elongated sill with front and rear stops defining a pocket therebetween. To facilitate use of known railcar structures, the energy absorption system can be used in combination with a railcar also having a sill with center stops disposed between the front and rear stops. A coupler having a head portion and a shank portion is arranged in operable combination with the energy absorption system. The energy absorption system also includes a first cushioning assembly positioned in the sill pocket. A first follower is urged toward and engageable with the front stops under the influence of the first cushioning assembly and is operably engageable with a free end of the shank portion of the coupler. A second cushioning assembly is positioned in generally axial alignment with first cushioning assembly. A second follower is positioned and normally urged by the energy absorption system toward and configured to engage with the center stops. An axially elongated yoke encompasses the first and second cushioning assemblies, terminates in an open forward end, and is coupled to the shank portion of the coupler. The first and second cushioning assemblies act in series relative to each other to absorb and cushion impact forces directed against them when the energy absorption system operates in a buff direction. Advantageously, the second follower acts in concert with the center stops and the second cushioning assembly to minimize excessive system cycles while better dissipating train action energy when the energy absorption system operates in a draft direction.
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公开(公告)号：US11472447B2
公开(公告)日：2022-10-18
申请号：US17223868
申请日：2021-04-06
摘要： A railroad freight car coupling system utilizing purely mechanical cushioning assemblies at opposed ends of the car. Each cushioning assembly includes an elongated draft gear assembly including two individually operable and axially spaced assemblies for absorbing both buff and draft forces. Each draft gear assembly includes an axially elongated and hollow metal housing with a first open end and a second open end disposed in longitudinally spaced relation relative to each other. The draft gear assembly is provided with first and second spring biased assemblies at opposed open ends of the housing for absorbing, storing and returning energy directed against a railroad freight car with which the draft gear assembly is arranged in operable combination.
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公开(公告)号：USD963520S1
公开(公告)日：2022-09-13
申请号：US29693236
申请日：2019-05-31
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