A locking sleeve for connection with a valve box assembly of a central vacuum system includes, a first end adapted to couple to a wall of a valve box assembly, a second end opposite the first end, a central vertical axis between the first end and the second end, a first side adapted to be adjacent to a rear wall of a valve box assembly, a second side opposite the first side, a central horizontal axis between the first side and the second side, a slidable locking mechanism moveable in a sliding manner. The slidable locking mechanism is adapted to secure a vacuum hose assembly to the valve box assembly of the central vacuum system.

A connection arrangement includes a first and a second assembly, and an elastically deformable locking element disposed on the first assembly. The locking element is configured to releasably interlock the two assemblies and, during mounting of the two assemblies, to deform into a mounting condition and, after completion of the mounting, to form an undercut which counteracts detachment of the two assemblies. The first assembly has a stop which is movable between an operative position, which assists in maintaining the undercut of the locking element and in which the locking element bears against the stop and/or in which the locking element is deformable against the stop, and a detachment position, in which the stop, in relation to the operative position, is spaced further apart from the locking element and in which the locking element is deformable into a detachment condition for detachment of the two assemblies.

There is disclosed a side wall seal for piping comprising an annular ring adapted to be attached to a building sidewall, an annular wall extending outwardly from said annular ring and having a seam in said annular wall, a first ear extending outwardly from the annular wall adjacent a first side of the seam and a second ear extending outwardly from the annular wall adjacent a second side of the seam, and a closure mechanism for closing the seam around said piping. A wedge member may be used with the side wall seal to angle the piping downward.

A damper for an exhaust duct of an exhaust line of a semiconductor fabrication apparatus includes a damper body to be inserted into a fixing hole in the exhaust duct in a first direction, the damper body having a diameter substantially the same as a diameter of the fixing hole, and plural push buckles. The push buckles are provided on a distal end of the damper body along an outer circumferential surface of the damper body and spaced apart from each other around a circumference of the damper body, the push buckles being resilient and movable with respect to the outer circumferential surface along a second direction perpendicular to the first direction. When the push buckles have passed through the fixing hole in the first direction, the push buckles prevent a return movement through the fixing hole in a direction opposite to the first direction.

A mounting bracket for a hydrant that is fully concealed by the hydrant head. The mounting bracket is fastened to the structure and includes tabs which engage the hydrant head to tightly secure the hydrant to the structure. The hydrant head includes a structure engaging periphery such that the mounting screws are fully concealed and protected from the environment.

A feedthrough for feeding signals through a panel having opposite sides includes first and second parts. The first part can include a first body configured to be disposed in a first portion of an opening in a panel, a first lumen disposed within the first body, and a first engagement area comprising a first contact area. The second part can include a second body configured to be disposed in a second portion of the opening in the panel, a second lumen disposed within the second body, and a second engagement area configured to engage the first contact area, wherein engaging the first contact area with the second engagement area causes deformation of the first part, the second part, or both to hold the first part and the second part within the opening such that the first lumen and the second lumen are disposed generally concentrically with each other.

There is described a pipe connector for connecting first and second pipes slidably engageable one into the other, the pipe connector comprising: a side wall extending between a first end and a second end along a longitudinal axis and defining an interior space, the side wall being adapted to be inserted into a floor hole made into a floor; a floor flange extending laterally and outwardly from the first end of the side wall, the floor flange being adapted to rest on a floor surface when the side wall is inserted into the floor hole; and a guiding assembly secured to the side wall and comprising at least one resilient retaining finger for receiving the first pipe therebetween, the at least one resilient retaining finger being securable to the first pipe when the second pipe is engaged into the first pipe.

The present invention provides a base electrical box, and an end portion. The end portion is added to the base electrical box to substantially complete the electrical box. The electrical box also includes at least one intermediate portion that is added to complete the electrical box. The at least one intermediate portion is placed between the base electric box and the end portion.

Quick coupling device 1 for transferring liquid for an aircraft, comprising a female member 7 configured to be connected to a first reservoir, said female member 7 forming a passage and comprising a cylindrical portion 13 and a radial portion 14, a male member 2 configured to be connected to a second reservoir, said male member 2 forming a passage, slidably mounted in a liquid-tight manner in the female member 7 and comprising a cylindrical portion 3 and a radial portion 4, and a member 40 for locking the male member 2 in the female member 7, the locking member 40 being disposed between the radial portion 14 of the female member 7 and the radial portion 4 of the male member 2, the locking member 40 surrounding the male member 2 and leaving a limited sliding extent for the male member 2 with respect to the female member 7, engaging with the female member 7 in the locked position and releasing the female member 7 in the unlocked position, the locking member 40 comprising an axial blocking lock that can be actuated by an axial then rotating movement and that can be released by an axial then rotating movement, and a rotation brake, the lock and the brake being active in the locked position.

An embedded fire-resistant device includes a mounting plate, a container and a fire-resistant member. The mounting plate has a contact surface and a first connection member provided on the mounting plate. The container has an open side and a second connection member provided on the open side. The fire-resistant member is received in the container. The first connection member and the second connection member are configured to slidably couple to or separate from each other so that the mounting plate and the container can engage with or separate from each other. This is a design that benefits in installation and future inspection.