摘要:
An apparatus for collecting powder exhausted from an electrostatic fluidized bed coater, in which exhaust air passes from the cloud chamber of the coater into an inner exhaust chamber and then passes through a porous plate to an outer exhaust chamber, the powder carried by the exhaust air being stopped by the porous plate and thereafter collected from the inner chamber.
摘要:
High frequency cable with short twist lays with the insulation thickness of conductors being different from that of others, the thickness of insulation being dependent upon twist lay length so as to achieve a desired characteristic impedance and signal attenuation.
摘要:
A cable for use as aerial service wire having a core of conductors and a load carrier in the form of a plurality of spaced apart tensile reinforcing members spaced from the core as a group laterally on one side of the core. Part of the jacket surrounds the core and is interconnected to another jacket part surrounding the group of filaments. The jacket part surrounding the filament group has a width greater than its thickness so that it may fit within a wedge clamp for stringing purposes. The two parts of the jacket are capable of being separated between the filament group and the core to allow a wedge clamp to be fitted. For this purpose, the cable may be fitted with a non-adherent tape inside the jacket and between the jacket parts with the jacket parts interconnecting around edges of the tape.
摘要:
A device for filling the interstices of a multi-stranded cable with powder, comprising an outer tubular housing and a concentric inner tube with an annular chamber therebetween for moving powder filler from an inlet to the outlet end of the device. Air is deliverable under pressure to the outlet end of the device to disperse the powder as a cloud.
摘要:
An electrical cable having a jacket surrounding a metal shield which, in turn, surrounds the cable core. The jacket comprises a polyolefin with a modifier provided by a carboxylic acid or anhydride thereof with the jacket lying in intimate overall contact with an outer surface of the shield and being bonded by the modifier throughout the overall contact areas to the shield.
摘要:
A telecommunications cable having no metal sheath, but having a plurality of equally pre-tensioned and inextensible tensile members embedded in the cable jacket. These members are spaced apart around the core and extend longitudinally of the cable to apply an axially compressive force upon the jacket. The members may be glass fibers and each member is preferably a roving of fibers. The filaments may be coated with a material which sticks them to the jacket and the core may be filled with a moisture blocking material.
摘要:
Method and apparatus to maintain homogeneity in a mixture of a fluid carrier and a quantity of magnetically permeable particles in which the mixture within a cylindrical container is subjected to the influence of a magnetic field which rotates around the container, and which at any instant is centered about its own axis lying outside the container. The field has an axis with directional components in a circumferential sense and in the axial sense of the container. In the apparatus, the field is produced by electrical coils connected for multiphase operation, side-by-side around the container and each coil is in a circumferentially and axially inclined relationship to the container.
摘要:
An electrode for a fluidizable bed coating apparatus comprising a plurality of electrically conductive tubes and a tube carrier. The tubes extend from the carrier and have free ends at which there is a concentration in intensity of an electric field when the tubes are connected into an electric circuit, and the tubes channel fluidizing gas through them and through the concentrations in intensity of the electric field.
摘要:
In a method of applying a jacket to a metal shield of a cable, the jacket comprises a polyolefin having a modifier provided by a carboxylic acid or its anhydride. As the jacket extrudate passes onto the shield, air pressure is lowered at the surface of the shield to provide intimate overall contact between jacket and shield. Heating, additional to that provided by the extrudate, is employed to raise the outside bonding temperature of the shield up to at least the bonding temperature of the modifier so as to provide a bond between the jacket and the shield.
摘要:
In a method of insulating an electrical conductor, the conductor passes upwardly through a coating fluid and a die means which is carried in a vertical position by a supporting fluid force. This force is provided by the supporting force of the fluid or a magnetic force which holds the die in suspension. Freedom for horizontal movement of the die is provided to enable it to move in a manner corresponding to any lateral movement of the conductor, this die movement being controlled by hydrodynamic forces between conductor and die to maintain the concentricity of a fluid layer formed on the conductor.