Gearbox for a rotary, mineral cutting head

Details Gearbox for a rotary, mineral cutting head Gearbox for a rotary, mineral cutting head

1987-09-03

1989-07-11

Smith, Leonard E.

Pumps

Three or more cylinders arranged in parallel, radial, or...

Radial cylinders

91492, 299 17, 417463, F04B 110, E21C 2560

Patent

active

048466310

ABSTRACT:
A gearbox for a rotary, mineral cutting head, comprises a casing housing speed reduction gearing and also a portion of a drive shaft supported by first and second, spaced-apart bearings, with at least one radially extending cylinder having a closed inner end and an open, outer end provided in said drive shaft and a reciprocable piston partially housed in said cylinder with a fluid seal between said piston and said cylinder; a variable volume, pressure-generating chamber defined between a radially inner end of said piston and a closed, inner end of its cylinder; a ring surrounding said drive shaft and having an inner profile and with a radially outer end of said piston in contact with said inner profile and with said piston.

REFERENCES:
patent: 1910581 (1933-05-01), Vickers
patent: 2461121 (1949-02-01), Markham
patent: 3204561 (1965-09-01), Roosa
patent: 4049318 (1977-09-01), Fruin
patent: 4212497 (1980-07-01), Borowski
patent: 4331064 (1982-05-01), Cheylus
"High Pressure Water Jet Assisted Cutting System for Shearer Loaders", Mining Magazine, Sep. 1987.

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