US 11,939,869 B2
Mineral bit and cutting tip therefor
Oswald D. Zaayman, Westcliffe, CO (US)
Assigned to CARRIERE INDUSTRIAL SUPPLY LIMITED, Lively (CA)
Filed by Carriere Industrial Supply Limited, Lively (CA)
Filed on Sep. 10, 2021, as Appl. No. 17/471,690.
Claims priority of provisional application 63/077,015, filed on Sep. 11, 2020.
Prior Publication US 2022/0082016 A1, Mar. 17, 2022
Int. Cl. E21C 35/19 (2006.01); E21C 35/18 (2006.01); E21C 35/183 (2006.01)
CPC E21C 35/19 (2013.01) [E21C 35/18 (2013.01); E21C 35/1835 (2020.05); E21C 35/1837 (2020.05)] 19 Claims
OG exemplary drawing
 
1. A mineral bit having a body with a cutting tip attachment face for releasably retaining a cutting tip, the cutting tip attachment face being a concave surface and extending across the entire attachment face spanning from one side surface to the other side surface of the body for engaging a convex rear surface of the cutting tip, wherein the cutting tip attachment face is configured to be opposite a cutting face of the cutting tip.
 
12. A mineral bit comprising a body having a head portion and a shank, and a cutting tip secured to the head portion, the cutting tip having a base surface free of projections and a convex rear surface each opposing the head portion, wherein the base surface is adjacent the convex rear surface, and wherein the head portion includes a cutting tip attachment face for releasably retaining the cutting tip, the attachment face being a concave surface for mounting-the convex rear surface of the cutting tip.