Abstract: Index tab holders are movably mounted on top portions of file folders or data separation sheets to locate the tab holders in selected lateral locations without removing the tab holders from the file folders. Linear rails associated with the top portions of the file folders cooperate with ribs on the tab holders to mount and laterally guide the tab holders on the file folders.

Abstract: A single or double post sign structure that is configured to accommodate the attachment of panels to one or both sides of a vertical upright. The sign panel is provided with keyed indentations that are located at the top and bottom edges of the panel to permit capture and rigid securement of the sign panel by a pair of retaining buttons that are used to anchor the sign panel to the sign post. Each retaining button is provided with protrusions corresponding to the keyed indentations of the sign panel. As a result, when the protrusion of the retaining button is engaged and seated in the keyed indentation of the sign panel, it becomes locked in place so that there is no room for lateral movement or removal of the panel. As a result, vandals or thieves are prevented from laterally sliding the sign panel to improperly remove it.

Abstract: A temporary or portable traffic signal can be utilized to regulate traffic during power outages. However, when power is restored and the normal operation of the permanently installed traffic signal resumes, then a method of interconnecting the permanent and temporary systems ensures that the operation of the two system are synchronized in predetermined and/or selectable modes of operation. Whenever power is available, an interface detects operation of the permanently installed main system and produces signals that can be used in one mode of operation to direct the portable system to ignore its internal timing sequences and synchronize with the main system, or in another mode of operation to cease its operation.

Abstract: A transparent, reversible sign for use in traffic barricades.

Abstract: A transparent, reversible sign for use in traffic barricades.

Abstract: A cylindrically curved self supporting changeable indicia substrate retaining display for securing and displaying a variety of printed indicia substrates; more particularly, as a changeable golf sponsor display; comprising an indicia substrate retaining appendage formed by a completely through cut, and tear preventive, indicia substrate retaining slit in a single flexible display substrate. Said indicia substrate is secured by surrounding and retained curvature stresses when subjected to directionally predetermined compression; with all tensions retained by a ground penetrating fixed width wire rod leg set that is vertically invertable and or retractable for use as an indoor self supporting display.

Abstract: A display apparatus for securing a display item for display is provided. The display apparatus comprises a monolithic frame made of a flexible light weight material having a body formed around the periphery of a central opening within which one or more display items can be mounted; and one or more fastening mechanisms extended from the inner perimeters of the frame body inward toward center of the central opening for slidably receiving the one or more display items. Each of the fastening mechanisms comprises first and second flexible loop tongues each having inner and outer surfaces, the inner surfaces of the first and second loop tongues facing each other and approximately coplanar to provide a receiving space therebetween, such that one or more edges of at least one display item can be frictionally secured in between said receiving space by wedging open the coplanar inner surfaces of the flexible loop tongues apart for a relatively tight fit therebetween.