| 摘要 |
A fluid tight geophone case having a case nose having an interior cavity for receiving the geophone to be enclosed and a mounting means for receiving an elongated spike wherein the case nose includes a threaded collar and indentation in the collar for receiving a first O-ring seal, a case top which is tapered having a hollowed-out central area, a small passageway at the top which is a restriction in the form of a cone with base directed toward the central area and a large opening at the bottom which is internally threaded to mate with the case nose and having a slot to receive the first O-ring seal, a tapered compression cone having thin side walls, a small tapered end having an aperture which is formed in an inverted cone forming a grommet cavity with the passageway of the cone, a shaped cavity in the interior of the compression cone and a large opening at the other end with an annular shaped slot formed around the outer periphery of the end to receive a second O-ring seal and a yieldable grommet located in the grommet cavity to clamp and seal against a cable passing through the grommet passageway is shown.
|
