A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
37/5
A01B 37/00 (2006.01) A01B 35/22 (2006.01)
Patent
CA 1237890
724-1606 ABSTRACT OF THE DISCLOSURE A scarifier tooth assembly of the type used on earth excavation equipment for digging furrows in the ground which comprises a replacement point and a clamp member for securing the point to a conventional tapered and grooved shank carried by the bucket of the earth excavating equipment. The point is of a forged integral construction and includes a tapered forward digging portion and a shaft portion extending rearwardly therefrom. The shaft portion defines a flat lower bearing surface adapted to abut a flat bearing surface on the shank and a curvilinear upper bearing surface adapted to abut an interior curvilinear bearing surface of the clamp member. Ear members project laterally from the rearward most end of the shaft portion of the point and fit about the shank for prevent- ing relative lateral movement between the point and shank. The clamp member is generally of an inverted "U"-shaped configura- tion and defines an inner curvilinear bearing surface and inwardly projecting lateral flanges at the open end thereof. Upon slighting the clamp over the point and shank, the projecting flanges fit within the locking grooves in the shank while the curvilinear bearing surface presses against the upper mating bearing surface on the shaft portion of the point, wedging and securing the point tightly between the clamp and shank.
489385
Launder Richard L.
Smart & Biggar
LandOfFree
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