Abstract:
Coupling segments (12, 14) having angled end faces (16a, 16b) are provided with stop members (30, 32) at their respective ends which prevent misalignment of the coupling segments (12, 14) during their assembly onto the adjacent ends of pipes or fittings. The stop members (12, 14) being crushed down during final tightening of the coupling to permit further limited lateral movement of the ends of the coupling segment (12, 14), thus to provide a truly ridged coupling in which angling of the axes of the respective pipes or fittings is eliminated.
Abstract:
A roller tool for forming circumferential grooves around a pipe is disclosed. The tool is rotatable about an axis of rotation and has a circumferential surface engageable with a pipe. The tool surface includes first and second surface portions positioned in spaced relation and oriented perpendicularly to the axis of rotation. A radial surface portion extends between the first and second a surface portions and is oriented substantially parallel to the axis of rotation. An angled surface portion is positioned adjacent to the second surface portion. The angled surface portion is oriented at an angle up to about 70° and slopes away from the second surface portion.
Abstract:
A coupling for joining conduits together is disclosed, the coupling having male and female fitting portions held in engagement by a self-locking roller cam positioned on the female portion. The roller cam has a cam body rotatable about an axis offset from the center of the cam body. An annular roller surrounds the cam body and is rotatable relatively to it. An outwardly facing surface on the roller engages an opposing concave surface on the male portion of the coupling. Reaction forces between the roller and the opposing surface operate along a line of action initially positioned to one side of the offset axis to create a torque opposing rotation of the cam into engagement with the opposing concave surface. Further forced rotation of the cam into engagement with the opposing concave surface causes the line of action of the reaction force to shift to an opposite side of the offset axis thereby creating a torque which causes rotation of the cam body into engagement with the opposing concave surface to retain the male fitting portion within the female fitting portion.
Abstract:
A coupling (10) for joining pipe segments together is disclosed. The coupling is derived from a standard fitting and has a housing with a socket (12) and a first expanded region (20) adjacent to the socket and a second expanded region (26) adjacent to the first expanded region. A sealing member (42) is positioned in the first expanded region and a retainer (40) is positioned in the second expanded region. A flange (32) turned inwardly on the second expanded region captures the sealing member and the retainer. The retainer has a plurality of radial teeth (60) angularly oriented to engage a pipe and prevent its removal from the coupling. Each tooth has a stiffening rib (62) arranged lengthwise along the tooth.
Abstract:
A pipe coupling (20) includes a retainer (9) having spring fingers (36) that extend inwardly of the inner periphery of the coupling (20), and which are cammed outwardly by a pipe (24) when inserted into the coupling (20), the spring fingers (9) then returning to their original position under the stored spring force for them to snap into a groove (38) in the pipe (24) exterior, and thus provide a positive stop preventing withdrawal of the pipe (24) axially of the coupling (20).
Abstract:
A coupling for joining pipe segments together is disclosed. The coupling is derived frorn a standard fitting and has a housing with a socket and a first expanded region adjacent to the socket and a second expanded region adjacent to the first expanded region. A sealing member is positioned in the first expanded region, a retainer is positioned in the second expanded region and a support washer having transversely oriented radial and coaxial flanges is positioned adjacent to the retainer. A clamping tab turned inwardly on the second expanded region overlaps the radial flange and clamps the support washer and retainer against a shoulder within the second expanded region thereby also capturing the sealing member within the coupling. The retainer has a plurality of radial teeth angularly oriented to engage a pipe and prevent its removal from the coupling. The teeth are twisted about their longitudinal axes.
Abstract:
A jaw (39) for crimping a generally cylindrical compression sleeve (34) in a compression coupling is disclosed in, which at least two support members (39, 41) are adapted to support at least two arcuately shaped dies (24) for movement toward and away from each other for compressing the compression sleeve (34) about an inner concentric pipe or tube (36) to form a sealed coupling therewith. Each die has an inner arcuate die surface corresponding in shape and dimension to a predetermined outer surface portion of the compression sleeve so as to engage and compress the compression sleeve when positioned thereabout and moved toward each other. The dies (24) each have at least one crimping roller (30) rotatably mounted adjacent the die surface. The crimping roller (30) is adapted to form a crimp on the compression sleeve and the inner member to form a mechanical attachment therebetween. Various combinations of die/roller arrangements are disclosed to encircle and compress a sleeve/pipe combination to form a compression coupling.
Abstract:
A quick connector for joining pipes (22) having grooved ends has a circlip (16, 18) which is contracted circumferentially and locked in the contracted condition, the inner diameter (30) of the circlip (16, 18), when in the contracted condition, being less than the outer diameter of the pipe (22), the inner diameter of the circlip (30) and the bottom wall of the pipe groove (24) including surface configurations (30A) that are interfitted in the contracted condition of the circlip, and which inhibit relative rotation between the quick connector (16, 18) and the pipe (12) in addition to locking the connector (12) against axial removable from the pipe (22).
Abstract:
A coupling for joining pipe segments together is disclosed. The coupling is derived from a standard fitting and has a housing with a socket and an expanded region adjacent to the socket. Three shoulders are positioned within the expanded region. A sealing member and two support washers are positioned within the expanded region, each engaging a shoulder. A retainer is positioned in the expanded region between the two support washers. A lip, positioned at the end of the expanded region, extends radially inwardly and captures the sealing member, washers and retainer within the coupling. The retainer has a plurality of radial teeth angularly oriented to engage a pipe and prevent its removal from the coupling. One of the washers is kept in spaced relation from the other washer by a shoulder to prevent contact with the retainer upon assembly which may otherwise inhibit the teeth engaging the pipe.
Abstract:
A coupling (10) for joining pipe segments together is disclosed. The coupling is derived from a standard fitting and has a housing with a socket (12) and a first expanded region (20) adjacent to the socket, a second expanded region (26) adjacent to the first expanded region and a third expanded region (29) adjacent to the second. A sealing member (42) is positioned in the first expanded region, a retainer (44) is positioned in the second expanded region and a support washer (45) having transversely oriented radial and coaxial flanges is positioned adjacent to the retainer in the third expanded region. A lip (32) turned inwardly on the second expanded region overlaps the radial flange and captures the support washer, retainer and sealing member within the coupling. The retainer has a plurality of radial teeth (60) angularly oriented to engage a pipe and prevent its removal from the coupling.