Concealment assemblies for fire protection sprinklers. The concealment assembly includes a cover member having an external surface with a base coating of uniformly applied polymer. One or more different polymer coatings are disposed in a discontinuous manner over the base polymer to provide a visual contrast and form desired indicia.

A system and method for manufacturing a strip or label used to place a substantially invisible identifying mark is disclosed. A strip is treated by removing at least one area of a liner element, a film layer and an adhesive layer. Each one of the removed areas is substantially congruent with the other removed areas. A laser or other ablating device is used to remove the areas through vaporization. The strip element is peeled away from the liner element, exposing the adhesive layer. The adhesive layer is thereafter pressed against a substantially flat metal surface. The laminate top coat and the film layer are removed from the object, leaving the adhesive layer in place. The adhesive material is impregnated with a UV sensitive material, but is otherwise invisible.

A ruggedized placard utilizes a multilayer construction including a clear primary layer or cover and an indicia layer, the indicia being viewable through the clear primary layer.

An identification plate, in which at least one security sign is arranged within the contours of a cover layer. As a result, the security sign is embedded in the cover layer and thus becomes an integral component of the identification plate. Such a security sign can no longer be removed from the identification plate. The identification plate according to the invention thus offers as much protection against manipulation as possible.

A marking element that enables to suppress counterfeiting specific information by making specific information made by electronic watermark pattern hard to be read. The marking element includes: a marking formed in a base plate with background pattern having engraved recesses made by irradiating the base plate with a laser; an identifying mark formed with recesses made by overwrite-engraving the background pattern with the laser, the recesses being deeper than the recesses of the background pattern; and a hidden mark with recesses made by overwrite-engraving the part different from the part of the identifying mark in the background pattern with the laser, the recesses are formed to be deeper than the background pattern, wherein the hidden mark having different recognition form from the identifying mark.

A metal poster is formed with an integral frame which is relief printed on the obverse face of a sheet metal plate with layers of UV curable inks. Image indicia imprinted on the plate is surrounded by the relief printed frame. The ink layers extend into selvage areas of the plate. The selvage areas are folded over to the rear face of the sheet metal plate to provide the frame with relief printed rounded peripheral edges.

Concealment assemblies for fire protection sprinklers. The concealment assembly includes a cover member having an external surface with a base coating of uniformly applied polymer. One or more different polymer coatings are disposed in a discontinuous manner over the base polymer to provide a visual contrast and form desired indicia.

This is a method and apparatus for use therein that provides a novel means to mark the location of a utility of a home or other building. The method comprises attaching a stencil marker to the form at the location of a utility before the slab is poured, pouring the slab and allowing it to cure, and then removing the form and stencil marker. In one or more embodiments, the stencil marker comprises a lightweight material capable of being folded without failure. The location of the fold is so that at least one indicator hangs down from the form and to the concrete.

A display structure for a wrench includes a handle which includes a mirror surface or a matte surface. At least one display area is formed in the handle and is a recessed area in which at least two embossed areas and at least one blank area are formed. At least one display portion is formed within the at least one display area. The at least one display portion has a colored area formed on the top thereof, so that the at least one display portion has a color that is different from that of the body of the wrench.

A quick release device of a hand tool includes: a main body; an operating portion, including a slidable sleeve movably disposed around the main body and a pin radially inserted into the slidable sleeve, the operating portion further including a movable rod movably disposed in the main body, the pin connected with the movable rod; an annular plastic body, rotatably disposed around the slidable sleeve and corresponding to the pin, a stepped structure formed between the slidable sleeve and the annular plastic body; an identification portion, disposed around the annular plastic body; wherein the slidable sleeve is movable between first and second positions, when the slidable sleeve moves toward the first position, the pin drives the movable rod to move toward a fixing position; when the slidable sleeve moves toward the second position, the pin pushes the movable rod to move toward a releasing position.