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US 9,518,464 B2Granted
Combination polycrystalline diamond bit and bit holder
AssigneeThe Sollami Company
InventorPhillip Sollami
Life of this patent
Estimating the term…
Abstract
A quick change type bit/bit holder includes several different structures for holding the item in a bit block without the necessity of a fastener. The bit portion of the bit/bit holder combination includes a ductile steel insert with a polycrystalline diamond coated tungsten carbide bit positioned therein. The ductility of the steel insert acts as a shock absorber to allow the bit to successfully remove concrete as well as asphalt in a road milling machine.
Claims16
A bit holder for road milling machinery comprising:
- a shank comprising:
- an elongate generally cylindrical member having a distal end including an annular axially inwardly extending groove therein defining an interior surface of an annular outer sidewall, the outer sidewall having a thickness between about ⅛ and ½ inch.
A bit holder for road milling machinery comprising:
- a shank comprising:
- an elongate generally cylindrical member having a distal end including an annular axially inwardly extending groove therein defining an interior surface of an annular outer sidewall, the outer sidewall having a thickness between about 1/16 and ¼ inch.
Dependencies are inferred from the claim text.