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US 7,740,085 B2Granted
Vibratory apparatus for a rotary-vibratory drill
OwnerRaymond J. Roussyinventor
Life of this patent
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Abstract
A vibratory apparatus comprises an eccentric mass disposed within a housing. A shaft and bushing are received by the eccentric mass and couple the eccentric mass to a crankshaft. An internal conduit extends longitudinally within the shaft. Input and output conduits each communicate with the internal conduit to allow a lubricant to flow through the shaft. A bore extends radially through the bushing. Lubricant flowing through the shaft may further flow through the bore and form a lubricating layer between the bushing and the eccentric mass.
Claims9
A vibratory apparatus, the apparatus comprising:
- a housing;
- an eccentric mass disposed within the housing;
- a crankshaft rotatably mounted within the housing and operatively coupled to the eccentric mass;
- a bushing received by the eccentric mass, the bushing having an outer surface and an inner space;
- a bore extending radially through the bushing, the bore being generally perpendicular to a longitudinal axis of the bushing;
- a shaft received within the inner space of the bushing and extending axially from the bushing, the shaft being connected to the crankshaft and the bushing being allowed radially movement about the shaft;
- an internal conduit extending longitudinally within the shaft, an input and output conduit each communicating with the internal conduit to allow a liquid to flow through the shaft;
- and
- an operating mechanism for rotating the crankshaft.
6 more elements
Dependencies are inferred from the claim text.