Variable depth core sampler
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsPeter M. Bourgeois, Robert J. Reger
Life of this patent
Estimating the term…
Abstract
A variable depth core sampler apparatus comprising a first circular hole saw member, having longitudinal sections that collapses to form a point and capture a sample, and a second circular hole saw member residing inside said first hole saw member to support the longitudinal sections of said first hole saw member and prevent them from collapsing to form a point. The second hole saw member may be raised and lowered inside said first hole saw member.
Claims15
A variable depth core sampler apparatus comprising:
- a cylindrical hole saw member having an open cutting end, a closed end, a cylindrical wall extending lengthwise therebetween and a plurality of longitudinal slots communicating with said open cutting end part way along the length of said cylindrical wall, forming a plurality of longitudinal sections separated thereby, and permitting the longitudinal sections to collapse to form a point and capture a sample;
- means for rotating said hole saw member around its longitudinal axis;
- and
- means for preventing said longitudinal sections from collapsing.
A variable depth core sampler apparatus comprising:
- a first cylindrical hole saw member having a first open cutting end, a first closed end, a cylindrical wall extending lengthwise therebetween, and a plurality of longitudinal slots communicating with and extending part way along the length of said wall, forming a plurality of longitudinal sections separated thereby, and permitting the longitudinal sections to collapse to form a point and capture a sample;
- means for rotating said first hole saw member around its longitudinal axis;
- a second cylindrical hole saw member having a second open cutting end, a second closed end and a cylindrical wall extending therebetween, residing inside and in supporting contact with the longitudinal sections of said first hole saw member, whereby said longitudinal sections are prevented from collapsing to form a point;
- and
- means for movably connecting said second hole saw member to said first hole saw member.
A variable depth core sampler apparatus comprising:
- a first circular hole saw member having a first open cutting end with a plurality of cutting teeth along the peripheral edge thereof, a first closed end, a cylindrical wall extending therebetween and having an L-shaped opening in the wall of said first hole saw member and a plurality of longitudinal slots communicating with and extending from said first open cutting end part way along the length of said cylindrical wall forming a plurality of longitudinal sections separated thereby, wherein said longitudinal sections having a weakened proximal portion, permitting the remaining longitudinal sections to collapse to form a point and capture a sample;
- a mandrel rotating said first hole saw member around its longitudinal axis;
- a second circular hole saw member having an second open cutting end with a plurality of cutting teeth along the peripheral edge thereof, a second closed end and a cylindrical wall extending therebetween, residing inside and in supporting contact with the longitudinal sections of said first hole saw member, whereby said longitudinal sections are prevented from collapsing upon themselves;
- and
- a pin fixably attached to wall of said second hole saw member slidably engaging the L-shaped opening of said first hole saw member, whereby said second hole saw member may be moved vertically with respect to said first hole saw member.
Dependencies are inferred from the claim text.