Grease filling arrangement in a cutter for a boring head

Details Grease filling arrangement in a cutter for a boring head Grease filling arrangement in a cutter for a boring head

2007-09-14

2008-11-04

Gay, Jennifer H (Department: 3672)

Boring or penetrating the earth

With storage means for bit lubricant carried by bit or shaft

C175S344000

Reexamination Certificate

active

07445062

ABSTRACT:
An arrangement for replenishing lubricating grease in drill cutters (3) that include a conical outer barrel (7) which is rotatable about a shaft (5) disposed centrally in the cutter, wherein there is provided in the cutter shaft (5) a passageway (16) that extends along the shaft from the cutter end of largest diameter and that connects with a transverse passageway (18) which opens into a bearing-accommodating space (13) in the cutter for delivering lubricating grease to the space (13), and wherein a lubricating nipple (19) is provided on the cutter end wall of largest diameter and functions to allow lubricating grease to be released from the bearing-accommodating space (13).

REFERENCES:
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patent: 3193028 (1965-07-01), Radzimovsky
patent: 3244459 (1966-04-01), Ortloff
patent: 3413045 (1968-11-01), Wohfeld
patent: 3419093 (1968-12-01), Lichte et al.
patent: 4228863 (1980-10-01), Liljekvist et al.
patent: 4709462 (1987-12-01), Perkin et al.
patent: 5137097 (1992-08-01), Fernandez
patent: 5520257 (1996-05-01), Crewa
patent: 2082868 (1997-06-01), None
patent: 926222 (1955-05-01), None
patent: 96/25581 (1996-08-01), None

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