36766 ⎘
Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material through an outlet orifice by pressure with mechanically or electrically actuated piston or the like characterised by the piston driving means; Stepwise advancing mechanism, e.g. pawl and ratchets; Lever actuated comprising a freely rotating element, e.g. a roller, between the lever and a piston rod driving means, e.g. a pawl