Machine tool device i.e. hand-held machine tool device, for use in hot-melt gun, has display unit comprising element, which is automatically reversible variable in appearance based on influencing variable

摘要

#CMT# #/CMT# The device has a display unit (20a) comprising an element (22a), which is automatically reversible variable in appearance based on an influencing variable. The reversible variable element is formed by a thermochromic coating, which reversibly changes color and transparency with transition temperature that has value between 30 degree Celsius and 60 degree Celsius. The reversible variable element is formed by a base body made of a material into which a reversible variable material additive is formed. The element partially forms a visual display element of the display unit. #CMT#USE : #/CMT# Machine tool device i.e. hand-held machine tool device, for use in a hand-held machine tool (all claimed) i.e. hot-melt gun. #CMT#ADVANTAGE : #/CMT# The reversible variable element partially forms the visual display element of the display unit, so that the user is warned by the constructively simple reversible variable element from risk of burns by contact of heated regions of the hand-held machine tool. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic side view of a hand-held machine tool formed as a hot-melt gun with a display unit and a reversible variable element formed as a thermochromic coating of a nozzle cap at a state before changing appearance of the reversible variable element. 12a : Handle 14a : Actuating element 18a : Housing 20a : Display unit 22a : Reversible variable element.