Patent ID: 7429299

Claim:
A system for controlled dispensing of material onto a window sash, comprising: a) a nozzle for dispensing the material into contact with a surface of the window sash; b) a drive for relatively moving said nozzle with respect to said window sash along a path of travel defined by a perimeter of the window sash at controlled speeds; c) a gear pump for delivering said material to the nozzle at controlled volumetric rates that correspond to the controlled speeds of relative motion between the nozzle and the sash; d) a supply that delivers the material to an inlet to the pump; and e) a controller coupled to said drive and said gear pump for controlling the drive to control the relative motion between the nozzle and the window sash and for controlling an angular velocity of a gear of said gear pump to control the flow rate of material dispensed by the nozzle based on the relative motion of the nozzle with respect to the window sash.