A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
97/119
A01B 59/042 (2006.01) A01B 63/112 (2006.01) G01L 5/13 (2006.01)
Patent
CA 1116943
4923 ABSTRACT A tractor draft sensing apparatus in which an elongated sensing shaft is supported in spaced fulcrum supports and carries a pair of draft links on its end portions located outward of the supports. Draft force signals are provided by an elongate member which is attached at one end to the shaft, extends generally parallel to the shaft, and carries at its other end a follower which engages a cam and pivots the cam to give a signal proportional to shaft bending and hence to the draft forces applied to the shaft. The elongate member also carries a separate follower which engages a guide surface on a guidance member to ensure that the elongate member moves relative to the shaft generally in a horizontal plane only during shaft bending. The shaft may also be shaped so that its neutral axis between the fulcrum supports is displaced transversely of the shaft, generally in the direction of application of the draft force, relative to its neutral axis location within the supports.
328548
Gowling Lafleur Henderson Llp
Massey-Ferguson Services N.v.
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