| 摘要 |
<p>Safety apparatus is provided which is adaptable to an aerosol sparay can (11) such that spraying can occur only in one direction or in a limited number of desired directions. The direction of spraying is in accordance with a feature (79) on a spray head (35, 36) and a mating feature (80, 81, 82, 83) on a mounting cup (16), when mating alignment is achieved, spraying can occur. When the spray head (35, 36) and the mounting cup (16) are out of mating alignment, spraying cannot occur.</p> |
