Patent ID: 7571753
Filing Date: 2009-08-11
Classification: B29C,B29K,B29L,Y10T

Abstract:
1. A heat and sealant delivery nozzle for sealing seams between adjacent sheets of flooring and formed from separate, mating sealant feeding and hot air conducting members that fit and are secured together to enclose first and second plenum chambers therebetween, whereby said sealant feeding member and said hot air conducting member together form a plurality of hot air inlet ducts for receiving hot air from a hot air supply including a first hot air inlet duct leading from said hot air supply to said first plenum chamber, a second hot air inlet duct leading from said hot air supply to said second plenum chamber, and said hot air conducting member has a linear seam preheating floor contact edge with forward and rearward extremities and a plurality of separate hot air exhaust ports lying along its length, all in airflow communication with said first plenum chamber, and said sealant feeding member has a hollow, sealant feed tube formed by its structure and defining a sealant feed channel therewithin that has a straight, linear alignment, and said sealant feed channel is isolated from direct airflow communication with said hot air supply, and said sealant feed channel has a sealant inlet opening above said second plenum chamber and a sealant outlet opening formed adjacent to and forward from said floor contact edge of said hot air conducting member, and said second plenum chamber is located immediately adjacent to said sealant feed tube which serves as a septum between said sealant feed channel and said second plenum chamber, and a sealant preheating duct is defined leading from said hot air supply to a sealant preheating port located above and immediately adjacent to said sealant feed tube.