Abstract: Sealing arrangement between relatively rotatable components that includes a first component having a cylindrical circumferential surface on one of an interior and exterior circumference, and a second component having a ring groove open toward the circumferential surface. A ring-shaped carrier is arranged to be displaceable in the ring groove, a centering rod is arranged to guide the ring-shaped carrier on the circumferential surface, and a radial lip seal is arranged to rest against the circumferential surface in an elastic manner. An axial seal is arranged to rest against a side wall of the ring groove, and an anti-twisting device is coupled to the ring-shaped carrier and arranged to enable a limited range of motion in all directions of a radial plane.

Abstract: A printable coating is disclosed, which is opaque as well as mar and scratch resistant. The coating contains a resin as a binder and, as a filler, titanium dioxide and boron nitride. The resultant coated film product can be used in various chemically and thermally demanding applications such as printed circuit board bar-code labels, wave solder masking tapes, automotive labels, and electrical insulation.

Abstract: A laminated air brake tubing includes inner and outer nylon layers with an intermediate fiber reinforcing layer. The tubing further includes one and preferably two layers of high density polyethylene positioned adjacent either of said nylon layers with a protective layer separating the fiber reinforcing layer from the high density polyethylene layer. The protective layer is preferably a thin layer of nylon or nylon alloy. Further, the high density polyethylene layer may include compatibilizing agents preventing delamination. The air brake tubing of the present invention meets the current requirements for air brake tubing, however it is less expensive than currently available air brake tubing.

Abstract: A laminated air brake tubing includes inner and outer nylon layers with an intermediate fiber reinforcing layer. The tubing further includes one and preferably two layers of high density polyethylene positioned adjacent either of said nylon layers. The polyethylene layers are cross-linked preferably by irradiation. Further, the high density polyethylene layer may include compatibilizing agents preventing delaminating. The air brake tubing of the present invention meets the current requirements for air brake tubing, however it is less expensive than currently available air brake tubing.

Abstract: The present invention is directed to improved thermoplastic compositions which possess, when utilized for plenum cable construction, not only enhanced low flame and smoke properties, but also enhanced physical properties, such as tensile strength, elongation retention, high and low temperature stability, etc. The thermoplastic compositions may be utilized in various embodiments for producing both the insulation and jacketing layers of plenum cables. In addition, the present invention is also directed to the insulated wire and the jacketed electrical cable produced utilizing the improved thermoplastic compositions.

Abstract: A secondary containment system for containing fuel leaks or leaks of other environmentally hazardous fluids includes a containment chamber and a detection system for detecting leaks. The containment system includes a fluid-carrying inner pipe and a containment pipe surrounding the inner pipe with an interstitial space being defined between the two pipes for containment of leaks. The interstitial space is pressurized with an inert fluid at a constant pressure greater than the pressure of the fluid flowing through the inner fluid-carrying pipe. Monitoring of the pressure of the inert fluid in the interstitial space triggers an alarm indicating that a leak has occurred. The location of the leak can be determined by the use of multiple pressure sensors. The containment pipe is reenforced to withstand pressures of at least 75 psi.

Abstract: A valve apparatus comprises a valve body, a piston disposed within the valve body, and a rolling diaphragm poppet that is attached the piston to regulates fluid flow through the valve via interaction with a valve seat within the valve body. The valve body has a chamber extending therethrough that includes a valve seat at one chamber end that defines a fluid inlet passage into chamber. The piston disposed within the chamber and is adapted for axial displacement therein by an actuating means. The rolling diaphragm poppet is attached to an end of the piston and is of a one-piece construction. The poppet includes a head that has a circular radial cross section, and that has a frontside surface that is adapted to interface with the valve seat in the chamber to control fluid flow therethrough. The head also has a backside surface that is adapted to accommodate attachment with an end of the piston.

Abstract: A coupling system comprises a first coupling member having a tongue that projects axially a distance therefrom, and a second coupling member that is threadable attached to the first coupling member. The tongue is inserted within a groove disposed within a second coupling member body. The tongue is axially displaced within the groove by rotation of one of the first or second coupling member relative to the non-rotated coupling member to form a leak-tight seal therebetween. At least one of the first or second coupling member body includes a hollow passage that extends axially therethrough. An elastomeric member is disposed within the groove and is interposed between a base portion of the groove and an end portion of the tongue.

Abstract: A magnetically-driven centrifugal pump comprises a pump body having a pump chamber extending therein from a pump body open end to a pump body closed end, and includes a liquid inlet port and a liquid outlet port for accommodating passage of liquid to and from the pump chamber. An outer magnet assembly is disposed concentrically around the pump chamber and attached to a drive means. An inner magnet assembly is disposed within the pump chamber and is mounted to a shaft that is rotatably mounted within the pump chamber. An impeller is attached to the inner magnet assembly and is mounted to the shaft. Together, the shaft, inner magnet assembly and impeller are rotated within the pump chamber by magnetically coupling with the outer magnet assembly. A diaphragm is disposed within the open end of the pump body and is positioned adjacent the impeller. The diaphragm includes a sleeve that extends radially therefrom and is adapted to form a leak-tight seal with the pump body without the use of O-ring seals.

Abstract: A valve assembly comprises a valve body and at least one valve seat is disposed within the valve body. A groove is disposed therein concentrically around the valve seat. A poppet assembly is disposed within the valve body and comprises an imperforate valve stem and a valve plug at an end of the valve stem. For three-way flow, the valve body includes two valve seats, and a valve plug at each valve stem end. A cap is attached to an end of the valve body top and a first flexible imperforate diaphragm is disposed within the cap. A second flexible imperforate diaphragm is disposed within the valve body between the poppet assembly and the first diaphragm, and forms a leak-tight seal with the valve body. A base is attached to an opposite end of the valve body. A third flexible imperforate diaphragm is disposed in the valve body between the poppet assembly and the base, and forms a leak-tight seal with the valve body.

Abstract: This invention relates to a fluoropolymer coated glass fabric having excellent flexibility, weatherability, ultraviolet light-stability, and moisture-resistance characteristics, which are suitable for protective cover applications, such as antenna cover.

Abstract: A temperature sensing system for over-heat detection includes a temperature sensing cable, interface unit and termination unit. The interface unit is configured to issue interrogation, communication and power signals to the termination unit through the temperature sensing cable. During normal operation issuance of the interrogation signal results in no reflection pulses, as the signal is dissipated through the termination resistance in the termination unit. When an over-heat, short circuit or open circuit condition exists, a reflected pulse is detected by the interface unit and this information is used to determine the type and location of the condition. The interface unit is also configured to supply power to the termination unit which in turn is stored in the termination unit to power its operations, including setting of the resistor values. The termination unit is used as an instrument of calibration in the subject system.

Abstract: A multilayered cling signage sheet for use in conventional printers, including laser printers. The sheet includes a first layer to provide structural integrity to the sheet. A second print receptive layer is adhered to one side of the first layer. A third layer which is a low modulus cling elastomer is adhered to the other side of the first layer. The cling elastomer is characterized in that it will releasably adhere to a substantially flat surface.

Abstract: A spray gun includes a body with a barrel portion having an inner chamber that extends therethrough from a front to a rear portion, and a grip portion. The grip portion includes a water inlet conduit and water outlet conduit disposed therein that each extend through the grip portion to the internal chamber. A spray nozzle is disposed within the front portion of the barrel and includes a valve seat disposed around an inlet end of a passageway extending therethrough. A popper assembly is slidably disposed within the inner chamber and has a cylindrical body with a valve element at one end that is adapted to form a liquid-tight seal with the valve seat when the gun is operated in a no flow position. The poppet assembly also includes a diaphragm at an opposite end of the body that is adapted to form a liquid-tight seal with an adjacent portion of the inner chamber.

Abstract: A double-diaphragm gauge protector constructed according to principles of this invention comprises a diaphragm housing formed from a upper housing body, a lower housing body, and a central housing body interconnected between the upper and lower housing bodies. A first diaphragm is disposed within the upper housing body forming an upper chamber therebetween and a liquid pressure-transfer medium is disposed within the upper chamber. The first diaphragm includes a transfer pad that projects outwardly away from a frontside or downwardly facing bottom surface of the first diaphragm toward the lower housing body. A second diaphragm is disposed within the lower housing body forming a lower chamber therebetween. The second diaphragm also includes a transfer pad that projects outwardly away from a frontside or upwardly facing top surface of the second diaphragm toward the first diaphragm. The transfer pads of the first and second diaphragms are positioned one on top of the other.

Abstract: A coupling apparatus includes first and second coupling members each having the form of a hollow conduit having a radially extending flange at a first end, an axially extending sleeve defining a second end adapted to connect with a fluid transport fitting, and a fluid transport passageway running axially therethrough. Each flange has a generally planar axially facing frontside surface. In one embodiment, the frontside surface of the first coupling member flange has at least one integral tongue extending axially outwardly therefrom, and the frontside surface of the second coupling member flange has at least one groove disposed axially therein. Each tongue is placed within a respective tongue to form a liquid-tight seal when frontside surfaces of the first and second coupling member flanges are joined together. In another embodiment, the frontside surfaces of each first and second coupling flange include at least one groove disposed axially therein.

Abstract: A multilayered cling signage sheet for use in conventional printers, including laser printers. The sheet includes a first layer to provide structural integrity to the sheet. A second print receptive layer is adhered to one side of the first layer. A third layer which is a low modulus cling elastomer is adhered to the other side of the first layer. The cling elastomer is characterized in that it will releasably adhere to a substantially flat surface.

Abstract: O-ringless coupling device including a pair of junction elements for attachment to the ends of flow lines to be connected and a coupling nut. One of the elements is provided with a coupling face having at least one annular groove formed therein circumscribing the fluid passageway. The sidewalls of the groove or grooves are angularly inclined relative to each other so that the width of the groove decreases with depth. The opposing face of the second junction element is provided with an annular rib, the transverse thickness of which is adapted to mate with the opposing groove of the first element such that when the nut is used to draw the two junction elements together, the rib mates with the groove and forms a seal therebetween. Preferably, the distal extremity of the rib is narrower than the proximal extremity and is of a dimension such that the walls of the annular rib mate with the walls of the annular groove such that coupling pressure wedges them together forming pressure seals at the engaging sidewalls.

Abstract: A valve apparatus for distributing flow from an inlet among either of two outlets consists of essentially four components comprising a valve body, a second valve seat, a poppet assembly, and an actuator assembly. The valve body comprises an inlet port and two outlet ports disposed between a top end and a bottom end of the body. The inlet and outlet ports communicate with a centrally located valve chamber. A first valve seat is integral with the body and is disposed in the chamber between the inlet port and the second outlet port. A second valve seat is formed separately from the body and is disposed within the chamber between the inlet port and the first outlet port. A poppet assembly is disposed within the chamber and comprises an enlarged diameter section integral with a valve stem positioned between opposing top and bottom ends of the stem. The enlarged diameter section comprises an upper shoulder adjacent the second valve seat and a lower shoulder adjacent the first valve seat.

Abstract: A flame-retardant optical fiber cable tubing bundle which can be vertically mounted in the shaft of a building comprised of a plurality of tubes; a first thermoplastic layer surrounding the tubes; and, a tape wrapped spirally along the longitudinal axis of the first thermoplastic layer. A second thermoplastic layer surrounds the tape. A method for complying with the UL 1666 fire test procedure for a cable tubing bundle intended for vertical installation includes the steps of liquefying a cross-sectional area of a thermoplastic layer of the cable tubing bundle; forcing the flow of the liquified thermoplastic inwardly to the center of the cable tubing bundle; and, charring the liquified thermoplastic to form a cross-sectional area of solid material in the interior of the cable tubing bundle.