SEAL ASSEMBLY WITH ENERGIZER AND SEAL ELEMENT

    公开(公告)号:US20190107203A1

    公开(公告)日:2019-04-11

    申请号:US15729094

    申请日:2017-10-10

    IPC分类号: F16J15/3208 F16J15/3276

    摘要: A seal assembly for sealing between a first machine part and a second machine part. The first machine part has a housing groove with a side wall. The seal assembly includes a compression ring for being placed within the housing groove and a seal element for being placed within the housing groove. The seal element is energized by the compression ring and separates the compression ring from the side wall of the housing groove and the second machine part. The seal element has a seal bottom portion with a seal apex for contacting the second machine part, and a seal back portion for contacting the side wall of the housing groove. In a first position of the seal element the seal back portion extends axially inwardly from the side wall of the housing groove.

    PIPE-MAKING APPARATUS AND PIPE-MAKING METHOD FOR SPIRAL PIPE

    公开(公告)号:US20180038541A1

    公开(公告)日:2018-02-08

    申请号:US15569314

    申请日:2016-04-27

    IPC分类号: F16L55/162 F16L1/00 B29C63/32

    摘要: A spiral pipe 9 is formed by joining edges 93, 94 of adjacent turns of a strip member 90 while helically winding the strip member 90 using a pipe-making apparatus 3. A propulsive reaction force for moving in a winding direction of the strip member 90 is imparted to a following strip portion 92 or a preceding spiral pipe portion 91 of the strip member 90 by a propulsive reaction force imparting portion 10 of the pipe-making apparatus 3. The following strip portion 92 follows a preceding spiral pipe portion 91 that has already been made into a pipe. A resisting force in a direction opposite to the propulsive reaction force is imparted to the strip member 90 along the winding direction by a friction between a resisting force imparting portion 30 and the strip member 90 generated while the strip member 90 is moved forward. In this arrangement, a diameter limiting frame can be omitted, and thereby, the pipe-making apparatus 3 can be downsized.