公开(公告)号：US20220260738A1

公开(公告)日：2022-08-18

申请号：US17735425

申请日：2022-05-03

申请人： Dennis Keith Reust

发明人： Dennis Keith Reust

IPC分类号： G01V1/135 ,  B06B1/12

摘要： Earth vibrators, such as servo-hydraulic vibrators, are improved to produce more output force and less distortion at very low frequencies by capturing mass from the vehicles which carry them, adding sufficient inertial mass to the reaction mass without adding much vehicle and equipment weight while also avoiding increases to the servo-hydraulic vibrator's stroke length. In particular, improvements to servo-hydraulic vibrators, at low frequencies, will couple some mass from the carrier vehicle frame and its load using non-rigid coupling only when additional mass is needed using dampers connected between the reaction mass and the carrier vehicle's frame, with the added damping being applied by a control system at very low frequencies of output where the vibrator is otherwise unable to produce force equal to its hold-weight.

公开(公告)号：US11346966B2

公开(公告)日：2022-05-31

申请号：US17213973

申请日：2021-03-26

申请人： Dennis Keith Reust

发明人： Dennis Keith Reust

IPC分类号： G01V1/155 ,  G01V1/133 ,  F16F15/023 ,  F16F15/02

摘要： Earth vibrators, such as servo-hydraulic vibrators, are improved to produce more output force and less distortion at very low frequencies by capturing mass from the vehicles which carry them, adding sufficient inertial mass to the reaction mass without adding much vehicle and equipment weight while also avoiding increases to the servo-hydraulic vibrator's stroke length. In particular, improvements to servo-hydraulic vibrators, at low frequencies, will couple some mass from the carrier vehicle frame and its load using non-rigid coupling only when additional mass is needed using dampers connected between the reaction mass and the carrier vehicle's frame, with the added damping being applied by a control system at very low frequencies of output where the vibrator is otherwise unable to produce force equal to its hold-weight.

公开(公告)号：US11092172B2

公开(公告)日：2021-08-17

申请号：US16926679

申请日：2020-07-11

申请人： Dennis Keith Reust

发明人： Dennis Keith Reust

IPC分类号： F16K11/07 ,  F15B13/04 ,  F15B13/043

摘要： An improved servovalve for a seismic vibrator or vibration machine which includes a left additional passageway conducting a portion of sampled pressure from a left cylinder pressure chamber to only a portion of the right end drive surface of the spool, wherein the portion of the right end drive surface is less that of the entirety of the right end drive surface; and a right additional passageway conducting a portion of sampled pressure from a right cylinder pressure chamber to only a portion of the left end drive surface of the spool, wherein the portion of the left end drive surface is less that the entirety of the left end drive surface; thereby providing at least two additional passageways configured to provide linear proportional pressure feedback in spool movement control.

公开(公告)号：US11852762B2

公开(公告)日：2023-12-26

申请号：US17735425

申请日：2022-05-03

申请人： Dennis Keith Reust

发明人： Dennis Keith Reust

IPC分类号： G01V1/155 ,  G01V1/135 ,  B06B1/12 ,  F16F15/023

CPC分类号： G01V1/135 ,  B06B1/12

摘要： Earth vibrators, such as servo-hydraulic vibrators, are improved to produce more output force and less distortion at very low frequencies by capturing mass from the vehicles which carry them, adding sufficient inertial mass to the reaction mass without adding much vehicle and equipment weight while also avoiding increases to the servo-hydraulic vibrator's stroke length. In particular, improvements to servo-hydraulic vibrators, at low frequencies, will couple some mass from the carrier vehicle frame and its load using non-rigid coupling only when additional mass is needed using dampers connected between the reaction mass and the carrier vehicle's frame, with the added damping being applied by a control system at very low frequencies of output where the vibrator is otherwise unable to produce force equal to its hold-weight.

公开(公告)号：US20210396896A1

公开(公告)日：2021-12-23

申请号：US17213973

申请日：2021-03-26

申请人： Dennis Keith Reust

发明人： Dennis Keith Reust

IPC分类号： G01V1/155 ,  G01V1/133

摘要： Earth vibrators, such as servo-hydraulic vibrators, are improved to produce more output force and less distortion at very low frequencies by capturing mass from the vehicles which carry them, adding sufficient inertial mass to the reaction mass without adding much vehicle and equipment weight while also avoiding increases to the servo-hydraulic vibrator's stroke length. In particular, improvements to servo-hydraulic vibrators, at low frequencies, will couple some mass from the carrier vehicle frame and its load using non-rigid coupling only when additional mass is needed using dampers connected between the reaction mass and the carrier vehicle's frame, with the added damping being applied by a control system at very low frequencies of output where the vibrator is otherwise unable to produce force equal to its hold-weight.

公开(公告)号：US20210010491A1

公开(公告)日：2021-01-14

申请号：US16926679

申请日：2020-07-11

申请人： Dennis Keith Reust

发明人： Dennis Keith Reust

IPC分类号： F15B13/04 ,  F15B13/043

摘要： An improved servovalve for a seismic vibrator or vibration machine which includes a left additional passageway conducting a portion of sampled pressure from a left cylinder pressure chamber to only a portion of the right end drive surface of the spool, wherein the portion of the right end drive surface is less that of the entirety of the right end drive surface; and a right additional passageway conducting a portion of sampled pressure from a right cylinder pressure chamber to only a portion of the left end drive surface of the spool, wherein the portion of the left end drive surface is less that the entirety of the left end drive surface; thereby providing at least two additional passageways configured to provide linear proportional pressure feedback in spool movement control.