Abstract: A wall feedthrough fitting for a conduit has a guide tube centered on an axis, adapted to be mounted in a wall with the conduit passing axially through the tube, and having an outer end of a predetermined inside diameter. A flexible and shrinkable sleeve generally centered on the axis has an inner portion secured to an outer surface of the guide-tube outer end and a shrinkable outer portion projecting axially outward past the outer end. A support tube of generally the same inside diameter as the guide tube is releasably coaxially fitted with the guide-tube outer end, and is fitted in, lines and supports the outer portion of the sleeve.

Abstract: An anchored guide tube centered on an axis and a conduit passing axially through the tube are relatively sealed by a feedthrough fitting having a flexible and shrinkable sleeve having an inner portion secured to an outer surface of the guide tube at an end thereof and a outer portion folded back over the inner portion and forming an annular fold generally at the tube end. A lubricant or the like is provided for facilitating sliding of the outer portion on the inner portion from a storage position folded back over and lying on the inner portion and a use position extending outward past the tube end away from the inner portion.

Abstract: A feedthrough fitting for sealing around at least one conduit extending longitudinally through a cutout in wall at a transverse spacing from an inner surface of the cutout has an elastomeric one-piece seal having a pair of longitudinally oppositely directed faces, an outer surface corresponding generally to the inner surface, at least one longitudinally throughgoing passage extending between the faces and to the conduit, and at least one lateral split extending completely longitudinally between the faces and completely laterally from the passage to the outer surface. Thus the seal can be spread at the split to fit around the conduit. A respective end plate covers generally all of each of the faces and is formed of a plurality of separate sections together forming a hole corresponding to and longitudinally aligned with the passage.

Abstract: A feedthrough fitting seals around at least one conduit extending longitudinally through a wall opening forming two pairs of parallel inner side surfaces and forming longitudinally directed inner and outer peripheral surfaces. The fitting comprises a plurality of similar elastomeric liner blocks each extending the full width of the opening from one of the side surfaces thereof to the opposite parallel side surface thereof. Each block is formed with at least one interface surface directly engaging the interface surface of an adjacent block, at least one half seat on one of the interface surfaces complementary to the conduit and snugly engaging same, a nonplanar formation extending the full width of the opening on each of the interface surfaces and hermetically interfitting with the nonplanar formation of the adjacent block, and outwardly directed inner and outer lips that extend laterally past the respective opening and engage on the inner and outer peripheral surfaces.

Abstract: The apparatus for detection of fire in a building includes at least one duct for at least one cable, particularly an electrical cable, through a wall opening in one of the walls of the building. The duct having two sealing members sealing the wall opening on both sides of the wall against the cable and the wall of the cable-feed passage is a fire retardant seal, by which the line of the cable is sent between different fire zones separated by the wall from each other while preventing the spread of fire between the fire zones. At least one electrical temperature sensor is mounted inside of the duct and at least one electrical connecting conductor connecting the temperature sensor and a detection device for direct detection of a sensor signal from the temperature sensor is guided from the interior of the duct to the wall and is fire protected in the wall. The duct with the sensors and the connecting conductors are embedded in the wall of the building during its manufacture.

Abstract: A feedthrough for a conductor in a wall opening which may be subjected to fire comprises to elastomeric parts including a hard part fitted into a soft part and together defining a conductor passage. The soft part presses against the wall opening. The hard part which consists of an elastomeric material contains a large amount of fire-retardant additive. The hard part also may have spaces receiving a fire-retardant substance which communicates by ducts along the joint surfaces of the two parts with the conductor passage.

Abstract: A feedthrough assembly for conduits basically has a wall formed with a throughgoing passage extending along an axis and having a radially inwardly directed wall surface. At least one conduit passes axially through the passage. A lining member in the passage receives at least one elastomeric adapter member having an outer surface complementarily radially outwardly engaging the wall surface and an inner surface snugly surrounding and engaging the conduit. A tightening unit has a tightening member that presses the inner and outer surfaces of the adapter member sealingly against the respective conduit and wall surface. One of the members is formed with at least one hollow chamber open radially inward at its inner surface and a mass of material generally fills the chamber. This material reacts endogenetically and emits a fire-inhibiting gas when heated substantially. The bulk of the fire-retarding material is provided in the adapter block.

Abstract: A feedthrough assembly for a conduit has, as is known, a wall formed with a throughgoing passage extending along an axis and having a radially inwardly directed wall surface. An elastomeric adapter sleeve has an outer surface complementarily radially outwardly engaging the wall surface, an inner surface snugly surrounding and engaging a conduit passing axially through the passage, and an axially backwardly open and annular groove between the surfaces and of a predetermined radial width in a relaxed condition of the sleeve. A tightening ring of a radial dimension greater than the width of the groove fits so tightly in the groove as to press the sleeve radially outward against the surface of the passage and inward against the conduit. The ring is formed of at least two similar sector-shaped ring parts having the same radius of curvature as the groove and having ends provided with angularly interfitting formations.

Abstract: An electrical wall feedthrough fitting is cast directly in a concrete wall and comprises an electrically conducting elongated member each of whose ends is formed with an outwardly open blind bore. An electrically insulating sleeve surrounds all but the ends of this member to prevent contact of the conductive member with the reinforcement in the wall. A terminal screw can be fitted into each of the bores for forming a good electrical connection. The middle part of a conducting member may be constituted as a flexible cable to allow the distance between the two ends to be varied or to allow the two ends to be offset relative to each other. A seal at each of the ends may be compressed to further increase the watertightness of the seal around such a fitting.

Abstract: A wall feedthrough fitting comprises a feedthrough tube that is embedded in a wall and has a pair of opposite ends each exposed to the respective face of the wall. An annular seal surrounds this tube adjacent one of the ends and radially inwardly bears on the tube and radially outwardly bears on a holding ring embedded in the wall and spacedly surrounding the tube. This holding ring extends axially toward one end of the tube beyond the seal and has between the seal and this one end an internal screwthread. A pressure ring is threaded into this holding ring and may bear directly via an axial face or indirectly via an intermediate ring on the seal. The tube may be provided at its one end with an external thread that engages a complementary thread inside the pressure ring.

Abstract: A wall duct assembly is disclosed comprising a duct piece or unit having arranged on its outside diameter retaining grooves for sealing structures. The sealing structures can be adjusted through the aid of pressure rings to provide effective sealing of the duct unit in walls or like structures.