摘要:
A pipe preparation device is disclosed for chamfering pipe ends and placing witness marks thereon to provide a visible indication that the pipes are properly engaged with a coupling. The device includes a body having co-axially aligned receptacles at opposite ends, the receptacles being sized to receive pipes having different diameters from one another. Cutting blades are mounted on the body and project into each receptacle. The blades have cutting edges that engage the end of a pipe inserted into a receptacle and cut a chamfer when the body is rotated relatively to the pipe. Two scoring tools project into each receptacle. The tools have contact surfaces that engage a pipe inserted into the receptacle. The tools in each receptacle are offset from one another and form two circumferential grooves around the pipe when the body and pipe are rotated relatively to each other. The grooves act as witness marks.
摘要:
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 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 lip 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 angularly oriented to engage a pipe and prevent its removal from the coupling.
摘要:
A method of making a coupling for joining pipe segments is disclosed. The method includes providing a fitting with a socket for receiving a pipe end. A first region of the fitting adjacent to the socket is expanded to a larger diameter than the socket. A second region of the fitting adjacent to the first region is expanded to a larger diameter than the first region. A third region of the fitting adjacent to the second region is expanded to a larger diameter than the second region. A sealing member is positioned in the first region, a retainer is positioned in the second region and a support washer is positioned in the third region. A lip is turned inwardly on the third expanded region to capture the components within the coupling.
摘要:
A support apparatus includes a first substantially horizontal member positioned adjacent to first and second elongated substantially vertical member members. The first substantially horizontal member has a channel formed in its rear side. The channel is sized and configured to receive wiring for display devices. The first substantially horizontal member is supported or attached to first and second collars positioned on the first and second elongated substantially vertical members such that movement of the first and second collars adjusts a vertical position of the first substantially horizontal member. One or more display devices, such as LCD screens or computer monitors, may be positioned on the first substantially horizontal member. Preferably, each display device positioned on the first substantially horizontal member is connected to the first substantially horizontal member via a connector that utilizes a releasable attachment mechanism that permits an easy removal or connection to the first substantially horizontal member.
摘要:
A support apparatus includes a first substantially horizontal member positioned adjacent to first and second elongated substantially vertical member members. The first substantially horizontal member has a channel formed in its rear side. The channel is sized and configured to receive wiring for display devices. The first substantially horizontal member is supported or attached to first and second collars positioned on the first and second elongated substantially vertical members such that movement of the first and second collars adjusts a vertical position of the first substantially horizontal member. One or more display devices, such as LCD screens or computer monitors, may be positioned on the first substantially horizontal member. Preferably, each display device positioned on the first substantially horizontal member is connected to the first substantially horizontal member via a connector that utilizes a releasable attachment mechanism that permits an easy removal or connection to the first substantially horizontal member.
摘要:
To avoid repeated damage to a lower section of a metal roll-up door, the lower section is replaced by a more impactable curtain assembly. The curtain assembly is so readily scalable, horizontally and vertically, that much of it can be manufactured and field assembled right at the installation site. The curtain assembly may comprise one or more strips of fabric that are cut from a roll of a certain width. The length of the fabric strips corresponds to the width of the doorway, and the number of strips is based on the vertical span of the door section that is being replaced. Windbars can be attached where adjacent strips connect to each other. A weighted, semi-rigid bottom bar reinforces the lower edge of the finished roll-up curtain. Under impact, the bottom bar has sufficient flexibility to allow the curtain to resiliently break away from within the door's vertical guide tracks.
摘要:
A retractable barrier includes a rollup or otherwise retractable panel that can extend between two spaced apart support members. When not in use, the panel can retract onto one of the support members to permit passage. The barrier provides substantial impact resistance by having the reactive force of the impact transfer directly between the barrier's retractable panel and its support members without having to rely on the strength of the panel's take-up roller or the strength of the roller's anti-rotation mechanism. This can be accomplished by having a slot-engaging stop member mounted directly to the panel itself. The stop member is preferably a pipe, rod, bar or some other vertically elongate member that can broadly distribute an impact reactive force over the height of the panel. In some embodiments, the barrier can be set for various doorway widths by simply repositioning the stop member's location on the retractable panel.
摘要:
A support apparatus includes a support member having at least one thread, a collar attached to the support member that is moveable along the one or more threads of the support member and at least one arm assembly attached to or positioned on the collar. The one or more threads may include a ridge formed on the support member or a groove formed in the support member. The one or more arm assemblies are configured to hold an object such as, for example, a monitor, copy holder, liquid crystal display or light fixture.
摘要:
A support apparatus includes a first substantially horizontal member positioned adjacent to first and second elongated substantially vertical member members. The first substantially horizontal member has a channel formed in its rear side. The channel is sized and configured to receive wiring for display devices. The first substantially horizontal member is supported or attached to first and second collars positioned on the first and second elongated substantially vertical members such that movement of the first and second collars adjusts a vertical position of the first substantially horizontal member. One or more display devices, such as LCD screens or computer monitors, may be positioned on the first substantially horizontal member. Preferably, each display device positioned on the first substantially horizontal member is connected to the first substantially horizontal member via a connector that utilizes a releasable attachment mechanism that permits an easy removal or connection to the first substantially horizontal member.
摘要:
A retractable barrier includes a rollup or otherwise retractable panel that can extend between two spaced apart support members. When not in use, the panel can retract onto one of the support members to permit passage. The barrier provides substantial impact resistance by having the reactive force of the impact transfer directly between the barrier's retractable panel and its support members without having to rely on the strength of the panel's take-up roller or the strength of the roller's anti-rotation mechanism. This can be accomplished by having a slot-engaging stop member mounted directly to the panel itself. The stop member is preferably a pipe, rod, bar or some other vertically elongate member that can broadly distribute an impact reactive force over the height of the panel. In some embodiments, the barrier can be set for various doorway widths by simply repositioning the stop member's location on the retractable panel.