Multiple adhesive foam bead applicator

A low-cost, hand-held apparatus for applying multiple streams of an adhesive to a roof substrate in a single pass, the apparatus comprising:

• a handle member having a valve assembly mounted thereon, the valve assembly having an adhesive inlet and an adhesive outlet,
• a cross-member interconnected to the handle member and extending generally perpendicular thereto, the cross-member having means for positioning the cross-member a preselected distance from the roof substrate,
• multiple adhesive stream dispensing means including a primary adhesive distribution tube disposed on said handle member and extending between said nozzle assembly adhesive outlet and at least two secondary adhesive distribution tubes, the at least two secondary adhesive distribution tubes extending between said handle member and a plurality of adhesive application tubes disposed on said cross-member, said multiple adhesive stream dispensing means further including tube interconnection means including wye fittings interconnecting said primary adhesive distribution tube with said at least two secondary adhesive distribution tubes and further interconnecting said at least two secondary adhesive distribution tubes with said plurality of adhesive stream application tubes, said valve assembly outlet being adapted to receive an adhesive transfer tube extending from an adhesive supply source, said valve assembly further including a manually operated adhesive dispensing valve capable of operation with one hand, said adhesive stream application tubes having a diameter of between approximately one-half inch and three-quarters inch.

A low-cost, hand-held foam application rake for applying multiple beads of an adhesive in a preselected spacing to a generally planar substrate in a single pass, the rake comprising:

• an elongated handle member having a valve assembly mounted thereon, the valve assembly having an inlet and an outlet,
• an elongated cross-member interconnected to the handle member and extending generally perpendicular thereto, the cross-member having means for positioning the cross-member a preselected distance from the substrate in operation, the positioning means including two skid members adapted to slidingly engage said substrate, the skid members being spaced apart and extending away from said cross-member,
• adhesive dispensing means providing a fluid passage between said valve assembly outlet and said cross-member, the adhesive dispensing means including a network of adhesive passage tubes, the network including a primary distribution tube and at least two secondary distribution tubes, the primary distribution tube being disposed on said handle member and extending between said valve assembly outlet and the at least two secondary distribution tubes, said secondary distribution tubes extending between said primary distribution tube and a plurality of adhesive application tubes disposed on said cross-member, said network of adhesive passage tubes including wye fittings interconnecting said primary distribution tube with said at least two secondary distribution tubes and interconnecting said at least two secondary distribution tubes with said plurality of adhesive application tubes, said valve assembly outlet being adapted to receive an adhesive transfer tube extending from an adhesive supply source, said valve assembly further including a manually operated adhesive dispensing valve capable of operation with one hand, said adhesive application tubes having a diameter of between approximately one-half inch and three-quarters inch.

A low cost, hand-held applicator for applying multiple beads, under pressure, of equal amounts of an adherent compound in a single pass onto a roofing substrate, the applicator comprising:

• a base member, a handle member extending therefrom, the base member extending generally perpendicular to the handle member, said base member including means for slidably engaging the roofing substrate and maintaining said base member at a preselected distance from said roofing substrate;
• a tubular network for dispensing the adherent compound multiple beads under pressure in equal amounts upon said roofing substrate, the tubular dispensing network being attached to said applicator and extending from said handle member to said base member, said tubular dispensing network including a primary distribution tube in fluid communication with multiple secondary distribution tubes, the multiple secondary distribution tubes being in fluid communication with multiple application tubes maintained proximate to said base member, each of said secondary distribution tubes being of substantially equal length to promote distribution of said equal amounts of said adherent compound multiple beads through said primary distribution tube to said multiple secondary distribution tubes and out of said multiple application tubes onto said roofing substrate, the apparatus receiving said adherent compound under pressure from a pressurized adherent compound supply source.

A low-cost, hand-held adhesive foam application rake for applying multiple beads of an adhesive in a preselected spacing to a generally planar substrate in a single pass by depositing equal amounts of adhesive in adjacent multiple beads thereof, the rake comprising:

• an elongated handle member having a connection assembly mounted thereon, the connection assembly having an inlet and an outlet;
• an elongated cross-member interconnected to the handle member and extending generally perpendicular thereto, the cross-member further having means for positioning the cross-member away from the planar substrate a preselected distance in operation of said rake, the positioning means including two spaced apart members extending away from said cross-member and adapted to engage said substrate in a sliding manner;
• adhesive dispensing means providing a fluid passage network between said connection assembly outlet and said cross-member, the fluid passage network including a plurality of interconnected adhesive passage tubes, the network including a primary adhesive distribution tube and at least two secondary adhesive distribution tubes in fluid communication with said primary adhesive distribution tube, each of said at least two secondary distribution tubes extending between said primary distribution tube and said cross-member, each of said at least two secondary distribution tubes being of substantially equal length to promote distribution of said equal amounts of said adhesive multiple beads onto said roofing surface, whereby each of said at least two secondary distribution tubes cooperates with said primary distribution tube to define fluid passages of equal length, the apparatus receiving said adhesive under pressure from a pressurized adhesive supply source.