E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
262/82
E21C 25/00 (2006.01) E21C 35/183 (2006.01) E21C 35/18 (2006.01)
Patent
CA 2000859
Abstract of the Disclosure Ground Engaging Bit Having a Hardened Tip Ground engaging bits having hardened tips are beneficial when working extremely hard ground and/or planing asphalt or concrete. In these applications, the ground engaging bits rotate in their holders while performing the cutting action. Since the material needed to make a hardened tip is normally very expensive, it is beneficial to best utilize all, or at least most of, the hardened tip and to provide a hardened tip that remains sharp during its effective life. The present ground engaging bit has a body with a convex non-linear forward end surface and a hardened tip with a corresponding concave non-linear rearward end surface to mate with the forward end surface of the body. The hardened tip has a continuous concave surface of revolution defined on its intermediate portion with a radius thereof being less than the diameter of its rearward flange portion. This arrangement uses less material to form the hardened tip and also provides a bonded surface that during the brazing operation allows the brazing material to freely flow evenly over the interface between the two surfaces. This arrangement provides an effective ground engaging bit that remains sharp during the life of the ground engaging bit while using less material to make the hardened tip.
Klett Gene R.
Lonn Alan H.
Caterpillar Inc.
Smart & Biggar
LandOfFree
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