Patent ID: 6880592

Claim:
A canister guard for coupling to a canister at an outlet thereof and for preventing liquid chemical in the canister from exiting through the outlet when pressure is applied through a canister inlet of the canister, said canister guard comprising: an elongate housing enclosing an interior volume therewithin, said housing including a circumscribing sidewall, a closed bottom portion and a flow passage at an upper portion of the housing for egress of gas from the interior volume of the housing; circumferentially spaced-apart openings around a lower portion of the circumscribing sidewall, for flow of gas from outside of the housing into the interior volume thereof; and longitudinally spaced-apart flow-through baffles in the interior volume of the housing, each flow-through baffle being joined to a respective inlet opening in the circumscribing sidewall and extending from said inlet opening into the interior volume of the housing, with a discharge opening at an interior portion of the flow-through baffle, and an interior passage joining the inlet opening and the discharge opening, for flow of gas from outside of the housing through inlet openings, interior passages and discharge openings of the flow-through baffles into the interior volume of the housing, whereby when pressure is applied through an inlet of the canister, gas flows into the interior volume of the housing through (i) the circumferentially spaced-apart openings around the lower portion of the circumscribing sidewall and (ii) the longitudinally spaced-apart flow-through baffles, so that gas egresses from the housing through said flow passage at the upper portion of the housing and liquid escape from the canister is restrained during such gas egress.