Abstract: Rotatable heating apparatus including a support portion, a shell portion, a heating portion, a power supply portion and a control portion; the support portion including a frame section, the frame section including spaced upstanding sections, the upstanding sections including shaft supports; the shell portion including a substantially cylindrical outer section, a smaller substantially cylindrical inner section disposed within the outer section adjacent thereto and spaced therefrom, substantially parallel first and second end sections adjacent the ends of the cylindrical inner section, first and second annular sections enclosing the spacing between the ends of the inner and outer cylindrical sections, a shaft member disposed along the axis of the shell portion; the heating portion including a plurality of spaced electrical heating elements disposed between the inner and outer cylindrical sections, the heating elements extending from the first annular section to a point adjacent the second annular section, insul

Abstract: An electrically heated hair curling iron includes a handle with a tubular electric heating element having a first end adjacent the handle, a second and spaced outwardly from the handle, and an outer peripheral surface provided with a plurality of accurately spaced grooves extending longitudinally between the first end and the second end. A removable hair grooming attachment is mounted on the heating element and includes an annular frame having a plurality of accurately spaced longitudinal support bars slidably engaged in the grooves through a first frame end having an inner diameter larger than that of the heating element. The opposite end of the frame has an inner diameter less than that of the heating element and abuts the second end of the element to limit the sliding movement of the attachment toward the handle and a detachable fastener extends through the abutting ends of the frame and heating element to secure the frame in place.

Abstract: Apparatus for removably holding a heater element having at least one end with an electrical contact. The apparatus includes a body of heat and electrically insulating material having a first segment for releasably and solely supporting an elongated heater element by the contact end of said element and a second segment connected to and axially aligned with said first segment for mounting an electrical terminal which engages the contact at the end of a supported heater element. A third segment extends from the body for manually gripping the holder apparatus without danger of thermal hazard or contamination so that the heater element may be installed in and removed from a work station such as a heated fuser roller.

Abstract: Heat seal apparatus is disclosed which comprises a heater unit having a heater therein and a roller insertable in and removable from the heater unit. The roller, when in the heater unit, is in heat transfer relation with the heater so as to be heated to a predetermined temperature level. When the roller is removed for application on a package for heat sealing purposes, the heat stored in the roller performs the heat sealing function thus obviating the need for a heater located within the roller and for a power cord connected to the roller. The roller is a sealed, hollow tube filled with a suitable heat storage medium, such as paraffin or another low vapor pressure, high heat capacity compound, so as to ensure sufficient heat capacity in the roller for heat sealing purposes, to ensure uniform roller temperatures, and to require only a localized contact with the heater for substantially uniformly heating the roller.

Abstract: An electrically heated hair curling brush includes a generally cylindrical elongated handle having an elongated, thermally non-conductive brush support rotatably mounted within the handle and axially extending therefrom. An electric PTC heating element is housed within a brush cylinder non-rotatably mounted on the axially extending portion of the brush support. An elastically deformable elliptical locking ring within the handle surrounds the brush support and has a protrusion on the inner surface of each of its long sides engageable in recesses formed in the confronting surface of the brush support to lock the handle and brush support together so as to prevent relative rotation therebetween. A manually depressible button on one of the short sides of the locking ring projects through an opening in the handle.

Abstract: An electrically heated hair curling appliance includes a handle assembly having an electric heating element extending fixedly from one end thereof and a removable tubular hair grooming member mounted on the heating element for rotary and axial movement relative thereto. The hair grooming member may include, on its outer surface, a plurality rows of teeth defining a brush or a pivoted hair clamping member.

Abstract: A fixing apparatus for electrophotography includes a fixing drum having an infrared radiation heat source in the interior thereof and a backing roller which cooperates with the fixing drum to transport a recording sheet. The fixing drum is made of a transparent material that is permeable to infrared radiation and has an outer coating of a material that absorbs a part of the infrared radiation.

Abstract: A hand-held steam hair curler-brush includes a perforated open-ended metallic cylinder extending forwardly from a handle. Secured to the handle and extending into the interior of the cylinder is a cylindrical member containing an electric heating element and having a closed end remote from the handle and a side wall spaced from the interior of the cylinder to define a first annular space therebetween. A rotatable perforated cylindrical barrel surrounds the cylinder and is spaced therefrom by first and second supports at the ends of the cylinder to define a second annular space therebetween. The support at the end of the cylinder remote from the handle includes a manually actuatable steam producing means closing the open end of the cylinder and arranged to create steam in the first annular space by bringing water into contact with the heated closed end of the cylindrical member.

Abstract: A lockable rotatable heated curling brush which is used for styling and curling hair includes a rod housing which serves as a handle, an inner tube fixedly connected to said handle and protruding therefrom, a heater inside said inner tube electrically connected to a swivel cord, and an outer tube rotatably supported by said inner tube, said outer tube having a round brush on the outer surface thereof. The outer tube is held in the handle by a circular guide in front which mates with a notched flange at the rear of the outer tube. There is a spring latch device which locks or frees the outer tube so it can rotate. The inner tube within the outer tube is aluminum and is in heat conducting relationship with the heater and the outer tube.

Abstract: An electrically heated hair curling brush for drying and styling hair includes an elongated handle having a longitudinal axis and provided at its front end with an axially extending inner tube affixed non-rotatably to the handle. An outer tube formed with a multiplicity of radial teeth defining a hair brush is engaged over the inner tube and supported for rotation about the longitudinal axis thereof by cooperating formations on the tube and handle. The cooperating formations include a circumferential rim on the front end of the handle defining a groove receiving and engaging a radially extending circumferential flange on the end of the outer tube adjacent the handle. A locking arrangement, including a radially displaceable spring-biased detent on the handle movable into engagement between radial locking teeth on the flange, is provided for selectively preventing rotation of the outer tube on the inner tube.

Abstract: A heat-pressure fusing apparatus that exhibits high thermal efficiency is disclosed.

Abstract: A welding device for welding together at least two superimposed foils of thermoplastic synthetic material includes an electrically heated temperature-controlled sealing roller and a counterpressure organ cooperating with roller to form a heated zone in which the foils are tightly welded while pressure is applied thereto. The sealing roller comprises a circular disk-like PTC (positive temperature coefficient) resistor which serves as the heating element and the temperature control, with the PTC resistor having a resistance characteristic which rises steeply in the range of the operating temperature of the sealing roller. The PTC resistor serving as the heating element comprises the effective part of the sealing roller which acts directly on the foils to be welded and has axially opposite electrically conductive end faces each provide with a disk-like metallic contact surface rotatable with the resistor and in electrical contact with the axial end faces.

Abstract: A process and a rubber-base bonding material in the form of a preformed strip for retreading vehicle tires using a prevulcanized tread and microwave heating for vulcanizing and binding the bonding strip to the tire carcass and to the tread is disclosed, wherein a bonding strip is used whose dielectric loss factor at the vulcanizing (retreading) temperature is higher than the loss factor of the prevulcanized tread, so that the microwave heat applied will be concentrated to the bonding strip and vulcanize the same providing satisfactory adhesion between carcass and tread without the already prevulcanized tread being destroyed or significantly reduced in quality due to the effect of the excess heat.

Abstract: The roller comprises a core and a shell secured to said core. The shell is made up of two coaxial pipes, i.e. an inner pipe secured to the core in the middle and an outer pipe fastened to the inner pipe in the middle and at the ends. This allows the shell to be made of small-diameter thin-walled pipes thus reducing the roller deflection and decreasing considerably the weight both of the roller proper and of the equipment utilizing said roller.

Abstract: Apparatus for heat sealing a thermally-sensitive material to a substrate material includes a frame, and a pair of internally heated shafts mounted fast on the frame. A roller member is rotatably mounted on each shaft, and is arranged to be heated by the heating element within the shaft. The rollers are rotated in opposite angular directions so that an object interposed at the nip will be translated therebetween. The facing peripheral portions of each roller member have a sinusoidal cross-section, with the peaks of one roller member being aligned with the valleys of the other. The roller members are spaced from one another to provide a degree of frictional resistance with the materials to be bonded together. The cross-sectional configuration in the roller members serves to provide a plurality of ribbon-like seals between the materials, without propagating a bubble as such materials are passed between the roller members.

Abstract: An apparatus for impressing relief patterns of high resolution, particularly phased holograms or phased diffraction gratings, in a thermoplastic information carrier, comprises a heatable impressing matrix in strip form, which carries the relief pattern and which, together with the information carrier, is passed between two calender rollers, the impressing matrix being adapted to be heated by a current flowing through it.

Abstract: A heat sealing unit for producing a heat sealed seam on plastic films wherein a plurality of fins made of thin ductile metal having good heat conducting properties are mounted on a thin flexible heating element. The heating element is in turn mounted on a resiliently compressible back-up pad. The fins are closely spaced and flattened against the heating element in overlapping relation so that they provide a relatively large heat sink and at the same time enable the unit to flex so as to conform to the contour of the plastic films to be heat sealed.