Apparatus for extracting subterranean gas samples
First Claim
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1. Apparatus for extracting subterranean gas samples comprising:
- an elongated stiff rod pointed on the lower end and having a gas passageway from adjacent the lower end to adjacent the upper end thereof, the rod being formed of an outer tubular shaft and a telescopingly received inner shaft longitudinally positionable relative to said outer shaft, said gas passageway being opened and closed by relative movement of said inner and outer shafts,means for driving said rod into the earth whereby the lower end thereof is below the earth'"'"'s surface;
a collar means rotatably received on said outer tubular shaft having means rotatably engaging said inner shaft providing means to telescopically move said inner shaft relative to said outer shaft to open and close said gas passageway whereby said passageway may be closed until said rod lower end is driven beneath the earth'"'"'s surface, after which said passageway may be opened; and
means adjacent the upper end of said rod for extracting a gas sample from said gas passageway.
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Abstract
An apparatus for extracting subterranean gas samples including an elongated stiff rod having a gas passageway from near the bottom end to near the top end, a means for driving the rod into the earth whereby the lower end is positioned below the earth'"'"'s surface, a means to selectably open and close the gas passageway so that the passageway may be closed until the rod lower end is driven beneath the earth'"'"'s surface after which the passageway may be opened, and means adjacent the upper end of the rod for extracting a gas sample from the passageway.
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Citations
13 Claims
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1. Apparatus for extracting subterranean gas samples comprising:
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an elongated stiff rod pointed on the lower end and having a gas passageway from adjacent the lower end to adjacent the upper end thereof, the rod being formed of an outer tubular shaft and a telescopingly received inner shaft longitudinally positionable relative to said outer shaft, said gas passageway being opened and closed by relative movement of said inner and outer shafts, means for driving said rod into the earth whereby the lower end thereof is below the earth'"'"'s surface; a collar means rotatably received on said outer tubular shaft having means rotatably engaging said inner shaft providing means to telescopically move said inner shaft relative to said outer shaft to open and close said gas passageway whereby said passageway may be closed until said rod lower end is driven beneath the earth'"'"'s surface, after which said passageway may be opened; and means adjacent the upper end of said rod for extracting a gas sample from said gas passageway. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 12)
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8. Apparatus for extracting subterranean gas samples comprising:
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an outer tubular shaft having a gas passageway from adjacent the lower end to adjacent the upper end thereof; a telescopingly received inner shaft longitudinally positionable relative to said outer shaft, said gas passageway being opened and closed by relative movement of said inner and outer shafts, said outer and inner shafts providing a stiff rod pointed on the lower end, means for driving said stiff rod into the earth whereby the lower end thereof is below the earth'"'"'s surface; means to selectably open and close said gas passageway whereby said passageway may be closed until said rod lower end is driven beneath the earth'"'"'s surface, after which said passageway may be opened; means adjacent the upper end of said rod for extracting a gas sample from said gas passageway; and
whereinsaid outer tubular shaft is defined by at least one transition from a larger exterior diameter upper portion to a smaller exterior diameter lower portion providing a frusto-conical transition area spaced above said rod pointed lower end, said transition area providing a ground seal when said rod is driven into the ground. - View Dependent Claims (10, 11, 13)
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Specification