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    Pneumatic vibration generator
    1.
    发明授权
    Pneumatic vibration generator 失效
    气动振动发电机

    公开(公告)号：US3605555A

    公开(公告)日：1971-09-20

    申请号：US3605555D

    申请日：1970-01-05

    Applicant: GEN DYNAMICS CORP

    Inventor： WISE BOYD A

    IPC: B06B1/20 ,  B25D9/08 ,  B25D9/14 ,  F01L15/02 ,  F01B7/18 ,  F01L21/02

    CPC classification number: B25D9/14 ,  B06B1/20 ,  B25D9/08

    Abstract: A SELF-EXCITED PNEUMATIC OSCILLATOR IS DESCRIBED WHICH INCLUDES A RECIPROCATING VALVE MEMBER THAT IS CAPABLE OF HIGH FREQUENCY OPERATION. THE VALVE MEMBER IS DISPOSED IN A HOUSING HAVING A FIRST ACTIVE SPRING CHAMBER, AND A SECOND SPRING CHAMBER SPACED THEREFROM. BOTH SPRING CHAMBERS ARE CHARGED BY A SOURCE OF PRESSURIZED AIR AND ACT UPON OPPOSITE ENDS OF THE VALVE MEMBER. A DISCHARGE CHAMBER IS DISPOSED SO THAT IT IS BROUGHT PERIODICALLY IN COMMUNICATION WITH THE FIRST CHAMBER AS THE VALVE RECIPROCATES, WHEREBY THE OSCILLATOR CONVERTS THE ENERGY OF THE PRESSURIZED FLUID FLOWING FROM THE ACTIVE CHAMBER TO THE DISCHARGE CHAMBER INTO SELF-SUSTAINED RECIPROCATING MOTION OF THE VALVE. THE OSCILLATOR INCLUDES A FILTER BETWEEN THE SOURCE OF PRESSURIZED AIR AND THE SPRING CHAMBERS TO MINIMIZE ALTERNATING PRESSURE FLUCTUATIONS IN THE AIR SUPPLY LINE, THEREBY ENHANCING EFFICIENCY. THE FILTER AND VALVING PROVIDE FOR AUTOMATIC SELF-STARTING FOLLOWED BY A SHIFT TO A PREDETERMINED VALVE POSITION FOR EFFICIENT OPERATION AT MAXIMUM LOAD.

    Self-excited oscillator
    2.
    发明授权
    Self-excited oscillator 失效
    自激振荡器

    公开(公告)号：US3630294A

    公开(公告)日：1971-12-28

    申请号：US3630294D

    申请日：1970-01-05

    Applicant: GEN DYNAMICS CORP

    Inventor： BOUYOUCOS JOHN V ,  WISE BOYD A

    IPC: B25D9/08 ,  E21B1/00 ,  E21B1/30 ,  B25D9/00

    CPC classification number: E21B1/00 ,  B25D9/08

    Abstract: A self-excited pneumatic oscillator is described which includes a reciprocating hammer member adapted to impact an anvil. The hammer is disposed in a housing structure which includes a porting arrangement. As the hammer moves towards engagement with the anvil, it in sequence opens a discharge port and then an intake port in communication with a source of pressurized air. The space between the front surface of the hammer and an extended housing section which supports the anvil defines an active cavity. The space between the housing and the rear surface of the hammer defines a passive spring cavity. The hammer and these cavities define a system which is acoustically resonant and oscillates at a frequency determined by the dimensions and masses thereof to convert the flow of pressurized air into reciprocating motion of the hammer and provides isolation (minimizing pressure fluctuations) between the oscillator and the air source.

    Impact tools
    8.
    发明授权
    Impact tools 失效
    影响工具

    公开(公告)号：US3662843A

    公开(公告)日：1972-05-16

    申请号：US3662843D

    申请日：1970-01-29

    Applicant: GEN DYNAMICS CORP

    Inventor： WISE BOYD A

    IPC: B25D9/12 ,  B25D17/06 ,  B25D9/04

    CPC classification number: B25D17/06 ,  B25D9/12

    Abstract: Impact tools are described which have an anvil system for transmitting force pulses generated by the hammer to a load. The anvil system includes an impact spring arrangement, the spring being either mechanical or liquid. In one embodiment the spring has a variable spring rate which changes under the duration of the force pulses. In the other embodiment the spring is operative to absorb the energy in the trailing end of the force pulse and return it to the hammer. In this manner, force pulses are transmitted which have a shape which may be efficiently utilized by the load.

    Abstract translation: 描述了具有用于将由锤产生的力脉冲传递给负载的砧座系统的冲击工具。 砧系统包括冲击弹簧装置，弹簧是机械的或液体的。 在一个实施例中，弹簧具有在力脉冲的持续时间内变化的可变弹簧刚度。 在另一个实施例中，弹簧用于吸收力脉冲后端的能量并将其返回到锤子。 以这种方式，传递力脉冲，其具有可被负载有效利用的形状。

    Acoustic impact device
    9.
    发明授权
    Acoustic impact device 失效
    声音冲击装置

    公开(公告)号：US3570609A

    公开(公告)日：1971-03-16

    申请号：US3570609D

    申请日：1968-11-14

    Applicant: GEN DYNAMICS CORP

    Inventor： WISE BOYD A

    IPC: B25D9/02 ,  B25D9/12 ,  B25D17/06 ,  E21B1/00 ,  E21B1/26 ,  E21B1/38 ,  H01F41/10

    CPC classification number: B25D9/12 ,  B25D17/06 ,  H01F41/10

    Abstract: An impact device is described which is suitable for use in a precussive tool and which utilizes a hammer that impacts an anvil to efficiently transmit force pulses to a load such as the earth formation. The anvil system includes an impact hammer, an elastic spring member, drill steel and a bit. The required load force and load deflection are caused by a single force pulse of the proper force amplitude and time duration. The impact device elements and the load itself each have a mechanical impedance analogue which can be represented in a mechanical circuit. The Q of this circuit is selected to be between about 0.7 to 1.5 with the result that the transmitted force pulses are readily absorbed by the load with a minimum of reflection, while impact spring stress levels and velocities are both held to reasonable values. A folded spring configuration is described which permits the application of the present invention to relatively small pneumatic air tool devices.

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