Abstract: An index divider is reinforced using a polymer film having a bonding coating on one side thereof for bonding the polymer film to the index divider and a toner receptive polymer coating on the other side thereof.

Abstract: This invention relates to a method of melt processing a copolyester having a moisture content of 0.02 weight % or more comprising:(a) one or more dicarboxylic acids, and(b) a glycol component comprising from about 60 to 100 mole % 1,4-cyclohexanedimethanol.

Abstract: A thermal printer for printing on a continuous print medium by ink transfer from a thermal print ribbon has a print head which is pivotally mounted and which is driven in an oscillatory nodding motion by a stepper motor so as to repeatedly to bring a linear array of energizable printing elements to bear against a platen roller. Both the element array and the platen extend transversely to respective paths of travel of the print medium and the ribbon. The print medium is fed through the printer from an inlet region, between the platen and print head, and thence to an outlet region. The instantaneous rate of travel of the print medium past the print head is substantially the same as the rate of feed of print medium to the printer. Typically this rate is of the order of 250 to 400 mm per second. The ribbon also travels between the print head and the platen, overlying the print medium and is driven in such a manner that it travels at the same rate as the print medium during each printing operation.

Abstract: A toy having a first and a second guide line support, each guide line having two ends and a handle member respectively secured at each end. A body member for operating aerodynamically includes a frame, a sail, and spaced fasteners which are also secured to the first and to the second guide lines. In one embodiment support elements are slideably secured to the body member and to the fasteners for supporting the body in a desired orientation between the first and second guidelines. Alternatively, the support members may be included as a part of the frame of the body member.

Abstract: Alignment of a birefringent device characterized by a first face and a second face cut at Brewster's angle so that a plane of polarization is defined. The optical device is secured in the optical path by a rotatable member having an axis of rotation that is normal to the Brewster faces of the optical device. Coupled with the rotatable member on the axis of rotation is a support allowing adjustment of the angular position about the axis of rotation of the rotatable member. An operator adjusts the angular position of the rotatable member until the C-axis lies in the plane of polarization. Even though the C-axis may not be parallel to the direction of polarization, the depolarization effects of the misalignment are eliminated by proper adjustment of the angular position relative to the plane of polarization. A tunable, solid state laser using the alignment apparatus with a birefringent filter achieves greater linear tuning range.

Abstract: Alignment of a birefringent tunable laser gain medium characterized by a first face and a second face cut at Brewster's angle so that a plane of polarization is defined. The gain medium is secured in the optical path by a rotatable member having an axis of rotation that is normal to the Brewster faces of the optical device. Coupled with the rotatable member is a support allowing adjustment of the angular position about the axis of rotation fo the rotatable member. An operator adjusts the angular position of the rotatable member until the C-axis of the gain medium lies in the plane of polarization. Even though the C-axis may not be parallel to the direction of polarization, the depolarization effects of the misalignment are eliminated by proper adjustment of the angular position relative to the plane of polarization. A tunable, solid state laser using the alignment apparatus with a birefringent filter achieves greater linear tuning range.

Abstract: A steerable motorized power unit is constructed for detachable coupling to a conventional occupant propelled wheelchair in a manner such that it can be easily and conveniently coupled to, or uncoupled from, the chair by the occupant. Coupling pins are provided with mounting plates which can be fixedly clamped to the tubular chair frame at a selected position without requiring any modification to the frame and without interfering with the normal operation of the chair.

Abstract: There is disclosed a portable fire alarm apparatus which comprises a foldable housing consisting of a base assembly having a surface for resting upon a horizontal plane. A central section is pivotally mounted to the base assembly to extend in the vertical plane. Pivotally mounted to the top of the central section is a top planar section which is pivotally mounted and adapted to be positioned in the horizontal plane where it is above and parallel to the base assembly and held in position by means of lockable hinges. The top section contains a smoke or heat detector with the central section containing a speaker or an alarm, with the base section containing electrical circuitry and a power source for alarm operation. The central section has an internal surface which is concave to act as a sounding surface for the audio signal indicative of an alarm condition.

Abstract: A roller chain conveyor having wire cross flights and attachments for releasably mounting said cross flights on the chain to provide a conveying surface. The attachment has at least one groove therein to receive an extended portion of the cross flight. The attachments may also be used in conveyors having multiple roller chains therein.