Patent ID: 9677252
Date: 2017-06-13
CPC Classifications: E02F

Claim:
1. First and second wear parts in combination for earthmoving and mining equipment, the first wear part including a forwardly extending protuberance, the protuberance including a cone portion defined at least in part by spaced apart upper and lower faces and opposed spaced apart side faces, the upper and lower faces being joined to the side faces by curved corner faces and the opposed upper and lower faces converging towards each other and the opposed side faces converging towards each forwardly so that the curved corner faces diminish forwardly, and the protuberance including a downwardly extending keying ridge forming opposed spaced apart shoulders with the lower face of the cone portion, the upper and lower faces and side faces of the cone portion terminating in a beak portion at the front of the protuberance, the beak portion having opposed spaced apart upper and lower faces joined by opposed spaced apart side faces, the upper face, lower face and side faces of the beak portion being contiguous with the upper face, lower face and side faces of the cone portion respectively, and the upper and lower faces of the beak portion being generally parallel and the side faces of the beak portion also being generally parallel, and wherein the downwardly extending keying ridge extends forward to the lower face of the beak portion, the second wear part including a mounting portion with a rearwardly opening cavity therein, the cavity including a cone portion extending forward from the rear opening, the cone portion being defined at least in part by spaced apart upper and lower faces and opposed spaced apart side faces, the upper and lower faces being joined to the side faces by curved corner faces and the opposed upper and lower faces converging towards each other away from the rear opening and the opposed side faces converging towards each other away from the rear opening so that the curved corner faces diminish away from the rear opening, and an upwardly open keying recess forming opposed spaced apart shoulders with the lower face of the cone portion, the upper and lower faces and the side faces of the cone portion terminating in a beak portion at the front of the cavity, the beak portion being defined at least in part by opposed spaced apart upper and lower faces joined by opposed spaced apart side faces, the upper face, lower face and side faces of the beak portion being contiguous with the upper face, lower face and side faces of the cone portion respectively, and the upper and lower faces of the beak portion being generally parallel and the side faces of the beak portion also being generally parallel and contiguous with a front face of the beak portion, and wherein the upwardly open keying recess extends forward to the lower face of the beak portion of the cavity and opens to the rear opening of the cavity, the first and second wear parts being so made and arranged that the beak portion of the protuberance substantially engages in the beak portion of the cavity with the upper and lower faces and side faces of the beak portion of the protuberance engaging with the upper and lower faces and side faces of the beak portion of the cavity, and the upper and lower faces and side faces of the cone portion of the first wear part engaging with the upper and lower faces and side faces of the cone portion of the cavity, with the downwardly extending ridge engaging in the upwardly open recess such that the spaced apart shoulders of the keying ridge engage with the respective opposed spaced apart shoulders formed by the keying recess upon relative sideways movement of the second wear part on the first wear part.