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公开(公告)号：EP0896675A1
公开(公告)日：1999-02-17
申请号：EP97906349.0
申请日：1997-03-05
申请人： Unaco Systems Ab
发明人： TENGHAM, Rune
摘要： PCT No. PCT/NO97/00064 Sec. 371 Date Oct. 8, 1998 Sec. 102(e) Date Oct. 8, 1998 PCT Filed Mar. 5, 1997 PCT Pub. No. WO97/41454 PCT Pub. Date Nov. 6, 1997There is provided an acoustic source especially for use in seismic studies at sea. The acoustic source has a longitudinal axis and sound emitting surfaces adapted to be put into sound emitting movements towards and away from each other by use of a drive unit. The sound emitting surfaces comprise two curved plate members having upper and lower ends essentially symmetrically positioned in relation to the longitudinal axis of the acoustic source, and forming a convex cross section with their respective upper and lower edges converging towards each other. The upper and lower edges of the sound emitting surfaces, respectively, are connected to each other with two corresponding side elements, the side elements each being connected to at least one hinge stretching along at least a part of the length of the source. The acoustic source further comprises a rigid frame for supporting the drive unit and comprising at least two rigid slide rods slidingly attached to the side elements with slide bearings for permitting relative axial movement of the slide rods with respect to the side elements. Hinges connected to the side elements provide a direct connection between the upper and lower edges, respectively, of the sound emitting surfaces.
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公开(公告)号：EP1015912A1
公开(公告)日：2000-07-05
申请号：EP97906348.4
申请日：1997-03-05
申请人： Unaco Systems Ab
发明人： TENGHAMN, Rune
摘要： PCT No. PCT/NO97/00063 Sec. 371 Date Oct. 8, 1998 Sec. 102(e) Date Oct. 8, 1998 PCT Filed Mar. 5, 1997 PCT Pub. No. WO97/41453 PCT Pub. Date Nov. 6, 1997Acoustic source, especially for use in seismic studies at sea, with sound emitting surfaces adapted to be put into sound emitting movements toward and away from each other by use of a drive unit in a known manner, in which the sound emitting surfaces comprise two curved plate members essentially symmetrically positioned in relation to the longitudinal axis of the source, forming a convex cross section with their respective upper and lower edges converging towards each other, and the respective upper and lower edges of the sound emitting surfaces are flexibly connected to two corresponding side elements positioned between them, and that the source comprises a rigid frame for supporting the drive unit, comprising at least two rigid slide rods stretching through the side elements, and that rigid covers are mounted on the slide rods, covering at least the whole side elements, thus forming rigid, covering surfaces with a constant distance between the covers.
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公开(公告)号：EP1015912B1
公开(公告)日：2002-06-05
申请号：EP97906348.4
申请日：1997-03-05
申请人： Unaco Systems Ab
发明人： TENGHAMN, Rune
摘要： PCT No. PCT/NO97/00063 Sec. 371 Date Oct. 8, 1998 Sec. 102(e) Date Oct. 8, 1998 PCT Filed Mar. 5, 1997 PCT Pub. No. WO97/41453 PCT Pub. Date Nov. 6, 1997Acoustic source, especially for use in seismic studies at sea, with sound emitting surfaces adapted to be put into sound emitting movements toward and away from each other by use of a drive unit in a known manner, in which the sound emitting surfaces comprise two curved plate members essentially symmetrically positioned in relation to the longitudinal axis of the source, forming a convex cross section with their respective upper and lower edges converging towards each other, and the respective upper and lower edges of the sound emitting surfaces are flexibly connected to two corresponding side elements positioned between them, and that the source comprises a rigid frame for supporting the drive unit, comprising at least two rigid slide rods stretching through the side elements, and that rigid covers are mounted on the slide rods, covering at least the whole side elements, thus forming rigid, covering surfaces with a constant distance between the covers.
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公开(公告)号：EP0835462A1
公开(公告)日：1998-04-15
申请号：EP96923103.0
申请日：1996-05-28
申请人： Unaco Systems Ab
发明人： TENGHAM, Rune , ZETTERLUND, Magnus
摘要： Drive assembly for acoustic sources with vibrating surfaces (1) capable of being set in vibrational motion, especially for use in seismic studies, comprising a frame (4) comprising at least one preferably centrally positioned drive part (3, 13). The drive assembly also comprises: two or more fastening devices (2) mounted in relation to the sound emitting surfaces (1) and positioned on opposite sides of the frame (4); two or more flexible transmission elements (5) connecting the fastening devices (2) to each other and extending on both sides of the axis between the two fastening devices; two or more second drive parts (6, 7, 16, 17) connected to the transmission elements (5) and positioned in cooperation with said first drive parts (3, 13) in order to make electromagnetic drives; and that each of the electromagnetic drives are adapted to provide a controlled oscillating relative motion between the related drive parts (3, 6, 7, 16, 17).
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