Patent ID: 8757074

Claim:
A material decelerating device for use with an agricultural air distribution system having a distribution tube arranged for connection to a material outlet for placing material conveyed by air into a furrow, the material decelerating device comprising: a center tube extending in a longitudinal direction between an upper end and a lower end; an inlet tube having an upper end arranged to connect to the distribution tube and a lower end in communication with the center tube at an intermediate location between the upper and lower ends of the center tube so as to be arranged to deposit material and conveying air received from the distribution tube into the center tube; the lower end of the center tube having a lower opening therein and being arranged to communicate with the material outlet so as to be arranged to deposit material received from the inlet tube into the material outlet; the upper end of the center tube having an upper opening therein and being arranged to exhaust conveying air received from the inlet tube therethrough; and a cap portion including a guard member spanning across the upper opening at a location spaced above the upper end of the center tube so as to define a portion of the upper opening between the guard member and the upper end of the center tube; the cap portion being adjustable relative to the center tube so as to be arranged to vary a size of the upper opening.