Drive assembly for acoustic sources
OwnerSvein Vaageinventor
Life of this patent
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Abstract
Drive assembly for acoustic sources having sound emitting surfaces adapted to be excited into vibration movements, in particular for use in seismic explorations. The assembly comprises an electric rotational motor (17) with an associated axle which comprises an axle part (18) the outer cross-sectional contour of which at least partially in the axial extension of the axle part is non-circular, but preferably smoothly rounded. Further the assembly comprises a number of push rods (21, 22) being arranged radially in relation to the axle (18) and adapted to preferably indirectly at their radially inner ends (23, 24) to be influenced by the non-circular axle part (18) during rotation of the axle, whereas the radially outer ends of the push rods (21, 22) are adapted to excite said sound emitting surfaces (1) into vibrational movement.
Claims19
Drive assembly for acoustic sources having vibrationally excitable sound emitting surfaces, said drive assembly comprising:
- an electric rotational motor having an axle which comprises at least one axle part, wherein the circumference of at least one transverse cross-section of the axle part is non-circular, wherein the axle part has a conicity, and
- a push rod having an inner end and an outer end, wherein the push rod is arranged radially in relation to the axle, wherein the inner end of the push rod is communicable with the axle part, wherein the sound emitting surfaces are excitable into vibrational movement by the outer end of the push rod.
Drive assembly for acoustic sources having vibrationally excitable sound emitting surfaces, said drive assembly comprising:
- an electric rotational motor having an axle which comprises at least one axle part, wherein the circumference of at least one transverse cross-section of the axle part is non-circular, and
- a push rod having an inner end and an outer end, wherein the push rod is arranged radially in relation to the axle, wherein the inner end of the push rod is communicable with the axle part, wherein the sound emitting surfaces are excitable into vibrational movement by the outer end of the push rod, wherein the push rod comprises a biasing device for adjusting the length of the push rod.
Dependencies are inferred from the claim text.