초록 ▼

A coupling joint for releasably coupling two telescoping tubular members in sealing relationship to one another, one of the tubular members being continuously urged inwardly relative to the other tubular member whereby a seal between said members may be maintained at all times. The coupling joint, w

A coupling joint for releasably coupling two telescoping tubular members in sealing relationship to one another, one of the tubular members being continuously urged inwardly relative to the other tubular member whereby a seal between said members may be maintained at all times. The coupling joint, which may be utilized in a valve or the like with the valve body representing one of the tubular members and a bushing representing the other of the tubular members inserted into the open end of the valve body, includes the use of a resilient ring such as an O-ring for retaining the two tubular members together, the ring being positioned in opposed grooves in the telescoped portion of the tubular members. One of the grooves on one of the tubular members is a retaining ring groove for retaining the resilient ring during assembly of the two tubular members, and the other of the grooves on the other of the tubular members is a groove having a camming surface thereon so oriented that when the grooves are opposed to one another with the resilient ring therebetween, the compressive forces in the resilient ring seeking to expand the same exert resultant forces on the tubular members to cause said tubular members to be urged toward one another.

대표청구항 ▼

A coupling joint for telescoping tubular members of a fluid distribution system comprising: a first tubular member; a second tubular member having a portion inserted within said first tubular member; stop means on one of said first tubular member and said second tubular member to limit insertion of

A coupling joint for telescoping tubular members of a fluid distribution system comprising: a first tubular member; a second tubular member having a portion inserted within said first tubular member; stop means on one of said first tubular member and said second tubular member to limit insertion of said portion of said second tubular member into said first tubular member; a first annular groove on one of said tubular members and a second annular groove on the other of said tubular members, said first and second annular grooves being arranged to oppose one another when said first and second tubular members are in telescoping relationship; a resilient O-ring positioned in said first and second annular grooves when the same are opposed to one another for retaining said tubular members in telescoping relationship, said first and second annular grooves, when opposed to each other and when said stop means has limited insertion of said portion of said second tubular member within the end of said first tubular portion, having a cumulative radial dimension anywhere along and normal to a longitudinal axis of the grooves less than the unstressed diameter of a radial section of said resilient O-ring to cause continuous compressive forces to be exerted on said resilient ring by both said first and second annular grooves; and a camming surface in one of said grooves engaging said resilient O-ring and causing the continuously compressed resilient O-ring to seek to expand and to exert resultant forces on said first and second tubular members urging the same in an axial direction relative one another against said stop means.