Patent ID: RE43772

Claim:
A seed tube, through which individual seeds pass, for an agricultural seeding machine, said the seed tube comprising: a side a front wall and a rear wall opposite the front wall, the front wall and the rear wall defining a hollow interior therebetween, the front wall configured to face a direction of travel of the seed tube, the front wall having a continuous non-disjoint substantially smooth surface exposed to said the seeds and including at least a portion thereof comprised of of the front wall being formed from a substantially transparent material; and a sensor including a transmitter, said transmitter positioned adjacent an outside of said side wall, and operating through said transparent material including a first half sensor and a second half sensor, the sensor configured to operate through the transparent material to detect passage of individual seeds through said seed tube ; and a mount having a structure which extends from an exterior surface of the front wall with the transparent material and configured to receive and hold the first half sensor on the exterior surface, and the rear wall including a second half mount configured to hold the second half sensor .