Cutter-bit assemblies

Details Cutter-bit assemblies Cutter-bit assemblies

1985-02-05

1986-12-02

Leppink, James A.

Mining or in situ disintegration of hard material

Miscellaneous

299 92, 37142A, E21B 1000

Patent

active

046260340

ABSTRACT:
A cutter-bit assembly employs an arcuate wedge 16 to secure a cutter-bit 2 within a pocket 4 of a holder 1. An additional deformable insert or resilient backing piece 18 is also located in an arcuate gap between the cutter-bit shank and a curved surface of the holder. The insert or backing piece co-operates with teeth 19 to lock the wedge in position.

REFERENCES:
patent: 2322929 (1943-06-01), Fulke
patent: 3608218 (1971-09-01), Sturgeon
patent: 4267653 (1981-05-01), Hahn et al.
patent: 4455771 (1984-06-01), Poncin
patent: 4456307 (1984-06-01), Merter et al.

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