Abstract: A substrate bears holographic imagery, selected portions of which are covered by non-holographic imagery printed in predetermined geometric registry with the holographic images. Multiple replicas of this interactive graphic work are mass-produced by embossing an array of the holographic imagery into a substrate in roll form, together with eyemarks located periodically along the roll. Using these eyemarks, the roll is optically sheeted and the non-holographic imagery then printed on the holographic substrate.

Abstract: A method for minimizing localized corrosion of fluid containers that occurs as a consequence of most non-chemical procedures for removing scale deposits is described. It counteracts the unavoidable side-effect of the lowering of the local pH in the vicinity of the bubbles of CO.sub.2 that are generated during an electromagnetically-induced controlled precipitation procedure. The method is a simple and facile procedure for curbing the localized corrosion occurring as a result of most non-chemical procedures for removing scales. The method is desirably performed by an induction coil wrapped around a fluid container such as a pipe encrusted with scale through which hard water is flowing. A pulsing electrical current is successively applied through the coil and halted, preferably for 3 to 10 minutes each. When the current is applied, a transitory induced magnetic field is generated in the solution, and scale encrusted on the fluid container dissolves in the solution.

Abstract: A scroll-conveyor centrifuge for separating a suspension into at least a liquid phase and solid material which is deposited through centrifugal force on the interior surface of the centrifuge bowl and which is conveyed along that surface to the solid material discharge opening located at an axial end portion of the bowl through rotation of the centrifuge helix at a differential rate with respect to the bowl. Abrasion of the interior bowl surface and operating power requirements due to movement of the solid material in the direction of the bowl circumference are both reduced by the simple expedient of applying to the interior bowl surface a texturing through the spray application of a thin adhering layer having a rough surface facing the helix.

Abstract: A sliding door which is moveable back and forth by a stationary drive motor nit, which has a drive pinion meshing with a gear rack attached to the door or the door's bottom rail, the gear rack being made of a series of adjacent rack segments extending in the sliding direction of the door and inserted in a retaining channel affixed to the door, the segments being manufactured as finished molded pieces and attached to each other with uniform tooth pitch along the rack, whereby the rack is low in cost, adaptable to various door displacement distances, and parts which are subject to heavy wear are readily replaceable.

Abstract: A container for photographs includes a container housing having walls defining a chamber, and a separating member subdividing the chamber into a main chamber for receiving a number of photographs and a sub-chamber for receiving negative strips for photographs. The photographs include a number of photograph prints arranged in edge-to-edge relationship, and a number of adhesive strips, one of each respectively being attached to the neighboring edges of such photograph prints to join the photograph prints into an elongated chain form.

Abstract: An identification system in which power drain is minimized is disclosed. The system comprises a reader (10) including a first signal generator (12) for generating a first signal (F1) which is then radiated by an antenna (17). An identifier (11) is shown which includes an antenna (20) for receiving the first signal for transmission to a signal modulator (32) which operates to modulate the first signal in accordance with a preassigned code for the identifier. The modulated signal is then used to periodically unload or change the reactance of the antenna (20) which action in turn changes the reactance of the reader antenna (17) and the consequent voltage on the reader antenna. By detecting the change in the voltage on the reader antenna the code of the identifier is determined. Power is used efficiently by low frequency oscillation within the signal modulator, by unloading during modulation, and by changing circuit reactance without changing the circuit load.

Abstract: A resonant circuit which forms part of a security tag for use in an electronic security system includes a fusible link which opens the circuit in response to radio frequency at the resonant frequency. The fusible link opens at a lower signal intensity than otherwise, because the substances of which it is made include at least one accelerator that promotes the fuse action.

Abstract: A person desiring to check out articles protected by security tags deposits these articles at one end of a check-out aisle. From there, they are transported to the opposite end of the check-out aisle as part of the check-out procedure. The person who deposited the articles is restrained from accompanying these articles all the way through the check-out aisle, but is able to reach its opposite end only via a path which is separate from the check-out aisle itself. That separate path is equipped with an electronic article surveillance system. The same separate path and its associated electronic article surveillance system serve several check-out aisles.

Abstract: Security tags which bear a resonant circuit made of conductors on opposite sides of a dielectric are deactivated by applying to a tag sufficiently high RF power at the resonance frequency to produce breakthrough between opposed conductors. A tag presence alert signal is intentionally extended beyond the period of active tag presence detection. During high power operation, the system inhibits other nearby RF deactivating and electronic article surveillance systems. The RF transmissions of all these systems may also be slaved. The high power RF produced by the deactivating system is principally dissipated where it causes no undesirable heating effects.

Abstract: An electronic security system and an electronic proximity key for use therein are disclosed in which a multitiered distributed architecture is used to rapidly and flexibly provide ingress and egress through a plurality of electronic locks. In the event of loss of communication with the central processor, the system will continue to function at lower levels of security without interrupting requests for ingress and egress, and will continue to provide alarm monitor processing. An improved proximity key for actuating the security system is disclosed which includes coupling coils that are integrally formed as part of the integrated circuit lead frame associated with the coding circuitry of such key.

Abstract: A person desiring to check out articles protected by security tags deposits these articles at one end of a check-out aisle. From there, they are transported to the opposite end of the check-out aisle as part of the check-out procedure. The person who deposited the articles is restrained from accompanying these articles all the way through the check-out aisle, but is able to reach its opposite end only via a path which is separate from the check-out aisle itself. That separate path is equipped with an electronic article surveillance system. The same separate path and its associated electronic article surveillance system serve several check-out aisles.

Abstract: A resonant circuit-bearing tag, which is capable of causing an article protection system to give an alarm, is provided with a release liner surface. To permit removal of an article to which the tag is attached without causing an alarm, a metal foil-bearing label is adhered to the release liner surface of the tag. By virtue of the release liner on the tag, the label is susceptible of being peeled off the tag, thereby restoring the tag's ability to cause an alarm.

Abstract: The invention discloses a weaving device, which includes (a) a support base adapted to support a number of weaving needles in spaced substantially parallel relationship; (b) two groups of weaving needles, each needle having a longitudinal axis and being adapted to be supported removably at one end by the support base, each needle further having a needle body, a free projecting tip at one end of the needle body and, remote therefrom, attachment means for attachment of a warp thread; and (c) moving means adapted for causing moving the tips of needles.

Abstract: To develop a latent image, which exists in the form of different potential values on different areas of a substrate, an auxiliary substrate is coated with toner by charging the toner triboelectrically and applying a potential to propel the charged toner onto the auxiliary substrate. This toner-coated substrate is brought into close proximity with the image forming substrate, while being maintained at a potential which lies between the different potential values of the latent image.

Abstract: The data stream input to the recovery logic is taken from a point at which its transitions are timecoincident with those of the data stream input to the phase comparator of the phase locked oscillator loop used to control the generation of the recovery windows. No delay is provided between the data stream take-off point and its input to the recovery logic. The PLO and the window generating circuits cooperate to maintain data and clock representative transitions in the data stream applied to the recovery logic centered in the respective windows.