1981-03-30
1984-03-20
Levy, Stuart S.
Cutlery
308173, 308230, 308233, F16C 1950, F16C 1910
Patent
active
044377096
ABSTRACT:
The present invention provides for a two piece, circular yoke apparatus which would be substantially U-shaped in cross section which is adapted to fit around the flange of a splined coupling to shift the coupling between the splined shafts of a hydro-brake and the draw works of an oil well drilling rig. Also provided would be a plurality of thrust bearings located on the inner side of the edges of the U of the body of the apparatus for engaging the splined coupling as the coupling rotates in its operation. The bearings would serve as a frictionless service for the rotation of the unit, and the edges of the U-body would be provided with channels for allowing a lubricant into the channel made by the edges and back wall of the U-body for maintaining the bearings lubricated during the process. Also provided is a yoke stand, for example a dowel pin type with a saddle type stand or on a screwed and dowel pin type.
REFERENCES:
patent: 643126 (1900-02-01), Guy et al.
patent: 696973 (1902-04-01), Holmes
patent: 728499 (1903-05-01), Reuter
patent: 1796473 (1929-05-01), Nixon
patent: 2080042 (1937-03-01), Gregory
patent: 4285550 (1981-08-01), Blackburn et al.
Hannon Thomas R.
Levy Stuart S.
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