Abstract: A laminate for use as a sticker, identity card, or the like has a back sheet having a front face bearing indicia and a back face that is provided with adhesive to adhere it to a substrate. The front face is adhered to a transparent cover sheet by means of a plurality of spaced-apart adhesive zones, so that any attempt to peel apart the laminate will result in tearing of the back sheet at these zones. In addition the adhesive on the back sheet may be provided in zones alternating with the zones on the front of the back sheet, so that irreversible destruction of this back sheet is ensured in the event of tampering.

Abstract: A valve assembly adapted to be emplaced upon a pipe comprises a housing having a bore extending perpendicular to the pipe to which the valve is to be connected and serving as a guide passage for a drill adapted to penetrate the pipe wall. The housing is formed with a transverse slot through which a slider can be inserted to block escape of fluid from the passage upon withdrawal of the drill. The control member is then mounted in this passage and can be used to open and close the valve which communicates with the pipe to which the valve connects via the aforementioned slot.