Hybrid retainer sleeve for tool inserted into block

Details Hybrid retainer sleeve for tool inserted into block Hybrid retainer sleeve for tool inserted into block

2011-08-16

2011-08-16

Kreck, John (Department: 3672)

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Rolling or rotatable-type bit mount

Reexamination Certificate

active

07997660

ABSTRACT:
A sleeve utilizing two methods of retention—a friction fit and a rear retention feature—is disclosed. The sleeve includes a circumferentially compressible portion that provides a friction fit when inserted into a bore and includes a projected portion around an end circumference that is used to mate with the rear of a tool block and urges the sleeve (and the tool) rearward. The disclosure also relates to a tool and block assembly, a method of retaining a tool in a holder and a mining machine incorporating the sleeve.

REFERENCES:
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patent: 4484783 (1984-11-01), Emmerich
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patent: 4684176 (1987-08-01), Den Besten et al.
patent: 4763956 (1988-08-01), Emmerich
patent: 5302005 (1994-04-01), O'Neill
patent: 5303984 (1994-04-01), Ojanen
patent: 5503463 (1996-04-01), Ojanen
patent: 7234782 (2007-06-01), Stehney
patent: 24 58 485 (1976-06-01), None

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