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(11) | EP 0 290 259 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Fluid actuated dispenser |
| (57) A liquefied gas operated caulk dispensing gun with a housing sub-assembly (10) having
an elongate tubular housing (16) defining a chamber (18) for accommodating a tube
of caulk, an open dispensing end and an opposite valved closed end portion. A material
dispensing sub-assembly (12) is also provided removably connected to the dispensing
end of the housing sub-assembly (10) to form a dispensing assembly. The dispensing
sub-assembly (12) includes a nozzle (40), a caulk flow passage (37) communicating
with the chamber housing (16), wherein the flow passage (37) is sized to accommodate
a caulking tube outlet. The material sub-assembly (12) also includes a valve controlled
passage for selective communication between an inlet portion of the flow passage and
the nozzle (40), and a flow control valve (48) movable between open and closed positions
to control such selective communication. A seal mechanism is positioned in the dispensing
assembly to effect a seal between the flow passage (37) and a charge receiving portion
of the chamber (18). A valve (48) is included on the valved end portion of the housing
to permit liquefied gas to enter the charge receiving portion for the dispensing of
caulk, and for venting the charge receiving portion when the housing sub-assembly
(10) is to be disconnected from the material sub-assembly (12). A lever mechanism
is operatively connected to the flow control valve (48) for moving the valve (48)
from one position toward the other. |