公开(公告)号：US4108272A

公开(公告)日：1978-08-22

申请号：US796494

申请日：1977-05-12

Applicant: John Lloyd Paitson ,  Robert N. Hendley

Inventor： John Lloyd Paitson ,  Robert N. Hendley

IPC: G01V1/137 ,  G01V1/38

CPC classification number: G01V1/137

Abstract: A rapid-fire air gun for generating acoustic pulses in a body of water includes a reservoir of high-pressure air, a shut-off valve, and a throttle valve for admitting air to an attached firing chamber. The firing chamber has an exhaust port that is sealed by a spring-loaded exhaust valve. When the shutoff valve is open, high pressure air is admitted to the firing chamber through the throttle valve at a rate depending upon the effective aperture through the throttle valve. The exhaust valve is set to open at some selected pressure and to close at some lower pressure. When the air pressure in the firing chamber exceeds the pressure setting of the exhaust valve, the valve opens to impulsively release a jet of high pressure air which generates an acoustic pulse. When the air pressure in the firing chamber drops, the valve closes and the air pressure again builds up in the firing chamber. A series of such openings and closings generates a pulse train. The pulse repetition rate, that is the frequency of the pulse train, depends on the throttle valve setting and/or the tension of the exhaust valve load spring.

Abstract translation: 用于在水体中产生声脉冲的快速喷气枪包括高压空气储存器，截止阀和用于将空气引入附着的燃烧室的节流阀。 燃烧室具有由弹簧加载的排气阀密封的排气口。 当截止阀打开时，高压空气通过节流阀以一定的速率通过燃烧室进入，这取决于通过节流阀的有效孔径。 排气阀设置为在某些选定压力下打开，并在一定压力下关闭。 当燃烧室中的空气压力超过排气阀的压力设定时，阀打开以脉冲地释放产生声脉冲的高压空气射流。 当燃烧室中的空气压力下降时，阀关闭，空气压力再次在燃烧室中积聚。 一系列这样的开口和关闭产生脉冲串。 脉冲重复率，即脉冲串的频率，取决于节流阀的设定和/或排气阀负载弹簧的张力。

公开(公告)号：US3961303A

公开(公告)日：1976-06-01

申请号：US468129

申请日：1974-05-08

Applicant: John Lloyd Paitson

Inventor： John Lloyd Paitson

IPC: G01V1/38 ,  G01V1/00

CPC classification number: G01V1/3826

Abstract: A depth controller whose streamlined body has only negative variable lift-producing means, such as a pair of vanes that can produce a controllable downward force. Embodied in the controller are also means providing an uncontrollable upward force. The vanes are preferably movable by translation or rotation in a single plane, inclined relative to the horizontal. Depth control means are operatively coupled to retract the vanes inward as the controller moves from the water surface down to a reference depth. The uncontrollable positive lift producing means return the controller to the desired depth should it fall below the reference depth. Each controller can be used to effectively maintain a seismic streamer cable section at or near the desired reference depth.

Abstract translation: 一种深度控制器，其流线型主体仅具有可变的提升产生装置，例如可产生可控向下的力的一对叶片。 在控制器中体现的也是提供不受控制的向上力的手段。 叶片优选通过在相对于水平方向倾斜的单个平面中的平移或旋转来移动。 当控制器从水面向下移动到参考深度时，深度控制装置可操作地联接以使叶片向内缩回。 不可控的正升降机产生装置将其降低到参考深度以下时，将控制器返回到所需的深度。 每个控制器可用于有效地将地震拖缆电缆部分维持在所需参考深度处或附近。

公开(公告)号：US4049078A

公开(公告)日：1977-09-20

申请号：US647549

申请日：1976-01-08

Applicant: John Lloyd Paitson ,  Clifford E. Anderson

Inventor： John Lloyd Paitson ,  Clifford E. Anderson

IPC: G01V1/137 ,  G01V1/04

CPC classification number: G01V1/137 ,  Y10T74/18304

Abstract: An apparatus for generating a series of seismic acoustic pulses in a body of water. The series is characterized by having continuously-variable, non-repetitive time intervals between successive pulses during a continuous seismic recording. The preferred generator is an air gun comprising a variable-speed motor with a rotating cam for actuating a sleeve valve which alternately opens and closes exhaust ports in a high-pressure chamber. As the valve repeatedly opens, jets of high-pressure air are impulsively expelled into the surrounding water, thereby generating an underwater acoustic pulse train.

公开(公告)号：US4114723A

公开(公告)日：1978-09-19

申请号：US749548

申请日：1976-12-10

Applicant: John Lloyd Paitson ,  Marion Lonnie Parker

Inventor： John Lloyd Paitson ,  Marion Lonnie Parker

IPC: G01V1/137 ,  G01V1/38

CPC classification number: G01V1/137

Abstract: An air actuated seismic signal generator, commonly termed an air gun includes a cylindrical casing that is divided into a control chamber and a firing chamber by a sliding valve. The end face of the sliding valve that is exposed to the control chamber has a greater area than the end face exposed to the firing chamber. An air exhaust port is provided in the firing chamber; the exhaust port may be opened or closed by sliding the valve away from or towards a seat that is associated with the exhaust port. Air is admitted to the control chamber at a relatively low pressure of about 500 psi, and holds the valve in the exhaust-port-closed position because of the differential forces on the valve end faces. The firing chamber is pressurized to a relatively high pressure of about 5000 psi by a separate air supply. There is no air communication or equalization between control and firing chambers. When some of the air in the control chamber is dumped, the differential forces are upset and the sliding valve moves away from the exhaust port seat, to impulsively release the air in the firing chamber. As the piston moves away from the seat, it momentarily compresses the air remaining in the control chamber. The compressed air acts like a spring, absorbs the motion of the valve and bounces the valve back towards the exhaust port seat. At the same time a fresh supply of control air is admitted to the control chamber to finally push the valve closed again. The amount of air remaining in the control chamber and hence the "resiliency" of the air spring can be set by means of calibrated orifices in the air dump line.

Abstract translation: 通常称为气枪的空气致动地震信号发生器包括通过滑动阀分为控制室和燃烧室的圆柱形壳体。 暴露于控制室的滑阀的端面的面积大于暴露于燃烧室的端面的面积。 在燃烧室内设有排气口; 排气口可以通过将阀从与排气口相关联的座椅朝向或朝向与排气口相关联的座椅滑动来打开或关闭。 空气以约500psi的相对低的压力进入控制室，并且由于阀端面上的差分力将阀保持在排气口关闭位置。 通过单独的空气供应将燃烧室加压至约5000psi的较高压力。 控制和发射室之间没有空气通信或均衡。 当控制室中的一些空气被倾倒时，差动力不稳定并且滑阀从排气口座移开，以冲击地释放燃烧室中的空气。 当活塞离开座椅时，它瞬间压缩剩余在控制室中的空气。 压缩空气的作用就像一个弹簧，吸收阀门的运动并将阀门弹回到排气口座椅。 同时，控制室进入新鲜的控制空气，最后再次关闭阀门。 控制室中剩余的空气量和空气弹簧的“弹性”可以通过空气倾倒管线中的校准孔来设定。

公开(公告)号：US3953905A

公开(公告)日：1976-05-04

申请号：US488368

申请日：1974-07-15

Applicant: John Lloyd Paitson

Inventor： John Lloyd Paitson

IPC: B63B22/18 ,  B63B21/52

CPC classification number: B63B22/18 ,  B63B2201/16 ,  B63B2201/20 ,  B63B2211/02

Abstract: A spar buoy is dynamically stabilized by providing a streamlined, V-shaped wing just above the center of gravity of the spar. The wing has a dihedral sufficient to stabilize the spar in three axes while under tow. The buoy may be equipped with a radio transmitter and a flasher beacon for tracking by an automatic direction finder.

Abstract translation: 通过在翼梁的重心上方提供一条流线型的V形翼，动态稳定翼梁浮标。 机翼具有足够的二面体，以在三轴下稳定翼梁，同时在牵引下。 浮标可以配备无线电发射器和闪光信标，用于通过自动测向仪进行跟踪。