An apparatus is provided for everting a tubular pipe lining material for rehabilitating an existing pipe. The apparatus has a sealed storage container storing a rotary body around which the pipe lining material is wound in a roll. An electric motor undergoes rotation in a first rotational direction to rotate the rotary body to wind the pipe lining material on the rotary body and undergoes rotation in a second rotational direction opposite to the first rotational direction. An eversion nozzle is ...

A remotely activated shut-off for stopping a fluid flow in a fluid line by actuating an existing valve in fluid connection with the fluid line wherein the valve is within an existing valve body and includes an existing external element for the actuating of the valve between a valve open position and a valve closed position. The shut-off including an outer body having means for connecting the outer body to the valve body in a mounted position such that the external element is substantially covere...

A wiper apparatus for sweeping or clearing debris from a surface, such as cuttings generated in a machining operation that have collected on a collecting surface, comprises rotatable wiper arms and dependent wiper blades. The wiper apparatus can be self-powered or it can be driven by a screw mechanism that engages the wiper arms, causing the wiper arms to rotate. The wipers are capable of relative movement in relation to the wiper arms, and the wipers may be rigid or flexible. Springs can be use...

A coaxial valve includes a valve box having an inlet opening, an outlet opening, and a common flow channel. An axially movable cylindrical valve casing has an opening for a fluid inlet port and an opening for a fluid outlet port, both of which are joined up in the flow channel. A coaxially positioned shutoff mechanism located inside the valve box closes off the inlet port or the outlet port of the valve casing. To provide for axial movement, the valve casing has at least one external circular gr...

A damper device includes a drive part, a baffle driven by the drive part, a frame including an aperture part which is opened or closed by the baffle, and a cover member for covering a joint part provided for the drive part to prevent moisture existing outside of the drive part from entering into the drive part. An adhesive is preferably coated in the joint part for the drive part to prevent the moisture from entering into the drive part.

Electric drive for a switching valve, the switching valve having such a drive, and a regenerative thermal oxidizer including the switching valve and drive system. The electric drive system allows for the starting and stopping of the rotation of a rotary valve with accurate positioning. The stopping of the valve includes dissipation of the kinetic energy of the valve by electric means. The valve is allowed to move vertically and oscillating rotary motion is possible. The drive system preferably i...

A vacuum sealing method and system for evacuating air from and sealing a flexible plastic bag of the type having a mating male rib and a female sealing channel closure along the length of the bag opening. A flowable liquid is applied to the female channel. The rib and channel are engaged along their length to leave a short portion of the closure unclosed, a hollow tubular evacuation tube connected with a vacuum pump is inserted into the bag through the unclosed portion, pinching pressure is manu...

A position restoring apparatus for an open and close device includes a casing base, a first actuating member, a second actuating member, a first end cover, a second end cover, an output shaft and a motor. The casing base has main member with a hollow seat. The first actuating member has a first disk part with a first block and a first rack at a lateral side of the first block. The second actuating member has a second disk part with a second block and a second rack. The first end cover provides a...

A semiconductor device is disclosed. In one embodiment the semiconductor device includes a semiconductor body of which is integrated a temperature sensor for measuring the temperature prevailing in the semiconductor body. The temperature sensor has a MOS transistor and a bipolar transistor. The MOS transistor is integrated into the semiconductor body nd configured such that the substhreshold current intensity of the MOS transistor is proportional to the temperature to be measured. The subthresho...

An apparatus for extracting air from within flexible packages having granular or otherwise flowable contents includes a package conveyor and a downwardly-open, vacuum extraction hood through which the packages are conveyed so that an upper portion of each package is moved through the extraction hood. The interior of the hood is joined in fluid communication with a vacuum source, so that air is extracted from within each package as it is conveyed through the hood. The present apparatus further in...