초록 ▼

Seismic signal generating apparatus of the impact type that includes a signal generator having an impact mass therein, a base plate or coupling member that is engaged by the impact mass to generate the signal, a housing attached to the generator that encircles the impact mass and extends toward the

Seismic signal generating apparatus of the impact type that includes a signal generator having an impact mass therein, a base plate or coupling member that is engaged by the impact mass to generate the signal, a housing attached to the generator that encircles the impact mass and extends toward the base plate, and means for excluding water from within the housing so that the impact mass travels only through gas prior to engaging the anvil. The apparatus also includes control means for positioning the generator angularly and azimuthally.

대표청구항 ▼

Apparatus for imparting a seismic signal into the earth, comprising: seismic generator means for generating a seismic signal, comprising: an impact mass; and propulsion means for driving said impact mass to produce the seismic signal; coupling means, in engagement with the earth and engagable with s

Apparatus for imparting a seismic signal into the earth, comprising: seismic generator means for generating a seismic signal, comprising: an impact mass; and propulsion means for driving said impact mass to produce the seismic signal; coupling means, in engagement with the earth and engagable with said generator means, for transferring, into the earth, signals generated by said propulsion means driving said impact mass into engagement with said coupling means; lift frame means located above said coupling means and resiliently connected thereto; hollow housing means encompassing at least a portion of said generator means for inhibiting the entrance of water into said apparatus when used in an underwater environment and for confining noise produced by said apparatus when used in an atmospheric environment, comprising: a first end portion connected to said generator means; and a second generally annular end portion, said second end portion extending toward said coupling means; an annular connector member flexibly connecting the second end of said housing means to said lift frame means; and pivot means pivotally connecting said seismic generator means to said lift frame means.