| 摘要 |
<p>Hand held aerosol canisters can be accidentally discharged if the valve remains open after hand pressure is removed. In the present invention, an actuating mechanism for a hand held canister (12) is provided in which a slider is moveable by finger pressure from a valve disengaged position into a valve engagable position and a concealed spring (28) returns the slider to a valve disengaged position when finger pressure is removed. The spring (28) is preferably moulded with the slider, projects through a slit (4) in the over cap (1) of the canister (12) and acts in a vertical plane against a stop depending from the over cap (1). It is energised when the slider is moved into the valve engagable position. The slider is preferably releasably locked in the valve disengaged position.</p> |
