Patent ID: 6884230

Claim:
A dispensing head for a handheld applicator for dispensing a multicomponent sealant from the applicator, the applicator comprising an applicator body, the dispensing head comprising: a) respective multiple fluid passageways connectable, one to each, with sources of multiple fluid sealant components in the applicator, to receive pressurized flows of fluid sealant components; b) at least one sealant dispensing cannula to dispense the sealant components; c) a flexible manifold defining a mixing volume wherein the mixing volume is provided with a closable opening to permit clearing of the mixing volume and wherein the manifold can convey the sealant components from the sources to the at least one dispensing cannula, said flexible manifold formed of a resilient material and having: i) multiple inlet ports sealingly engageable one with each fluid source to receive a respective sealant component; and ii) at least one outlet port sealingly engageable downstream of the inlet ports to supply the sealant components to the at least one dispensing cannula; and d) a suction conduit connectable with a suction source and a clearing valve communicating with the suction conduit and with the mixing volume closable opening, the clearing valve being selectively operable to close the closable opening and to connect the closable opening with the suction conduit to apply suction to the mixing volume for clearing purposes.