Abstract: A patterned indicator is provided which contains latent information. The patterned indicator includes a first substrate having first and second surfaces, the first surface having a uniform pattern printed of an ink thereon. A second transparent substrate having first and second surfaces is also provided. An adhesive activator is provided on the first surface of the second substrate. The indicator is activated by placement of the first surfaces of the first and second substrates into adhesive contact such that the ink and adhesive activator coact to cause the ink pattern to gradually bleed and blend together to cause a change visually perceptible through the transparent substrate in a selected time interval.A preferred embodiment of the invention is a parking permit, while other preferred embodiments include transit tickets, admission tickets, time passage indicators for other applications.

Abstract: An identification badge comprises a base coated with an adhesive protected by release paper. This badge is assembled by removing the release paper, placing an identification card into contact with the adhesive, and then attaching a fastener through a slot in the base of the badge. Various fasteners may be used to attach this badge to wearer's apparel. The badge can be assembled without damaging the identification card or the identification indicia, contained therein. The identification card can also be mounted so that the identification indicia is placed against a transparent, adhesive and viewed through a transparent base. In this embodiment, the information placed on the identification card cannot be altered without damaging the identification card. Also in this embodiment, a timing indicator can be incorporated into the badge so as to show the expiration of the badge after a selected period of time.

Abstract: A time indicator comprising a front part and a rear part, the rear part comprising an ink pattern layer overlaying a rear support member. The front part comprises a transparent front support layer, and an opaque adhesive layer having a front ink display surface, the adhesive layer capable of dissolving the ink pattern on the rear part, whereby contacting the front part with the rear part by applying the opaque adhesive layer onto the ink pattern layer activates the dissolution and migration of ink in a selected time interval from the ink pattern layer, through the opaque adhesive layer to the front ink display surface for viewing through the transparent front support layer.

Abstract: A one piece spring clip is provided which includes first and second relatively stiff elongate arms. Each arm has a gripping portion at one end and a jaw portion at an opposite end. A web interconnects the arms intermediate their ends, the web forming a pivot for the arms. A substantially U-shaped spring having a first end and a second end is disposed between the gripping portions of the arms. The first end of the spring is flexibly connected to one arm. A detent is formed on the other arm. The second end of the spring is resiliently biased to engage the detent when the gripping portions of the arms are initially moved toward each other, the spring yieldingly holding the jaws closed. The second end of the spring is continuously engaged in the detent for subsequent pressure and relaxation of pressure on the gripping portions of the arms to pivot the arms about the web, whereby the clamping portions of arms are movable toward and away from each other for receiving and retaining an object therebetween.

Abstract: A time indicator that rapidly changes color after a specific time interval is provided. The time indicator includes a base substrate with colored dye deposited on a first surface; a barrier applied over the colored dye; and a substrate having an adhesive on a first surface thereof. The substrate and the base substrate are put into adhesive contact. The adhesive coacts with the barrier to dissolve the barrier in a specified time interval. The adhesive then contacts the colored dye to dissolve the dye and permit the dye to migrate through the adhesive to cause a color change visible through the substrate.

Abstract: The time indicator device of this invention is provided with a display layer with at least one defined display region therein. A migration layer is provided which overlies and is attached to the display layer. The migration layer has at least one migration region therein and in use each migration region is in contact with at least one display region. An activation layer is provided which has at least one defined activation region therein. The activation region includes a migrating agent capable of migrating laterally through the migration region. When the activation layer overlies the migration layer, each activation region overlies at least one migration region. The migration region connects each activation region with at least one display region which is laterally distal from the activation region. In use and in order to activate the device the activation layer and migration layer are adhesively attached to each other.

Abstract: A time indicator is provided that changes color or produces an image or information after a specific time interval. The time indicator includes a base substrate with colored dye deposited on a first surface; and a substrate having an adhesive on a first surface thereof, the adhesive positioned at discrete locations on the first surface of the substrate. The substrate and the base substrate are put into adhesive contact. The adhesive contacts and coacts the colored dye to dissolve the dye and permit the dye to migrate through the adhesive to cause a color change visible through the substrate. The discrete adhesive inhibits lateral migration of the dye to preserve the image or information of the dye in a clear and/or understandable condition.

Abstract: A writing board is provided for mounting an overlying sheet for writing information thereon and an underlying sheet for storing a copy of the information. The board comprises a board having a writing surface thereon wherein portions of the surface are non-adhesive and tacky. A mounting means is attached to the board for removably mounting to the board the overlying sheet along an edge of the sheet. Portions of the non-adhesive tacky surface grip the underlying sheet to the surface to prevent slippage of the underlying sheet while writing thereon. Preferably, an other mounting means is attached to the board for additionally removably mounting the underlying sheet to the board along the edge of the sheet. The preferred mounting means it comprises a plurality of clips, wherein a means is provided for releasing the clip upon forcing the board down on a hard surface. Preferably the underlying sheet is a plurality of temporary identification badges and the overlying sheet a log therefore.