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US 4,709,362 AGranted
Oscillating orbital vibrator
AssigneeConoco Inc.
InventorJack H. Cole
Life of this patent
Estimating the term…
Abstract
An orbital vibratory mass is used for generating seismic signals and the like. An annular reaction mass is mounted on a crank by means of bearing. The reaction mass orbitally oscillates relative to the axis of the crank shaft without rotating. This reduces the internal forces created in the reaction mass by centrifugal force and enables less exotic, less expensive materials to be used in its construction.
Claims19
An oscillating orbital vibrator comprising;
- (a) a rotatable shaft;
- (b) a crank mounted on said shaft for rotation therewith, said crank having an outer periphery;
- (c) a first race of a cylindrical bearing affixed to said outer periphery of said crank;
- (d) a reaction mass having a cylindrical opening therein, said opening having an inner periphery;
- (e) a second race of said cylindrical bearing affixed to said inner periphery of said opening;
- (f) bearing means positioned between said first and second bearing races;
- whereby when said shaft and crank are rotated, said reaction mass orbitally oscillates with respect thereto inducing a vibratory motion.
4 more elements
In a seismic waveform generator, means for generating periodic seismic signals on a continuous basis, said means comprising:
- (a) a cylindrical housing;
- (b) a rotatable shaft journaled in said housing, said shaft having a crank mechanism connected thereto;
- (c) a reaction mass mounted on said crank mechanism by means of a bearing, said reaction mass orbitally oscillating about said crank mechanism in response to the activation of said rotatable shaft, to produce a vibratory motion.
Dependencies are inferred from the claim text.