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公开(公告)号：USD856382S1
公开(公告)日：2019-08-13
申请号：US29644428
申请日：2018-04-17
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公开(公告)号：USD856377S1
公开(公告)日：2019-08-13
申请号：US29644427
申请日：2018-04-17
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公开(公告)号：USD847871S1
公开(公告)日：2019-05-07
申请号：US29638484
申请日：2018-02-27
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公开(公告)号：USD856378S1
公开(公告)日：2019-08-13
申请号：US29644429
申请日：2018-04-17
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公开(公告)号：US20210087887A1
公开(公告)日：2021-03-25
申请号：US16768836
申请日：2019-01-11
摘要： A reamer (1) for underground passageways, comprising: a support housing (3) and a plurality of radially extending cutting wings (11); a plurality of ring segments (13), wherein each ring segment (13) includes an arcuate ring portion (15), wherein the plurality of ring segments (13) are assembled to form a stabilization ring (17) bridging radial outer edges (12) of the plurality of cutting wings (11), wherein the stabilization ring (17) is fastened to at least one of the cutting wings (11) to resist radial movement of the reamer (1).
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公开(公告)号：US20210051833A1
公开(公告)日：2021-02-25
申请号：US16965858
申请日：2019-01-31
IPC分类号： A01B21/08
摘要： A link assembly (3) and system (203) including a first link portion (7, 207) and a second link portion (9, 209). The first link portion (7, 207) includes a bulbous end (13). The second link portion (9, 209 a socket (15). To link adjacent link assemblies (3) or the first link portion (7, 207) to the second link portion (9, 209), the bulbous end (13) is received in the socket (15). In one example, the link assembly (3) is part of an agricultural ground engaging chain (1) having harrow member portions (5). In other examples, the link assembly and system (203) are used to link first element (204) and second elements (206) to one another. This may be used to join or anchor vehicles, structures and the like.
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