A core catcher for a core sampler has a hollow, semi-ellipsoidal body adapted to be fitted into a sample tube and being open at one end to permit material to be sampled to pass into the tube through the body. The body is slit axially from its other end to form a plurality of resilient, flexible, longitudinally and transversely arched fingers which may be flexed outwardly or away from one another as material to be sampled passes through the body. The fingers have convex, free ends which terminate short of one another to minimize scoring of the sample. The fingers are of such length as to enable their free ends to be deflected inwardly of the body into overlapping relation to form a support for material in the tube.
A hollow truncated cone made from material with elastic properties which expands around a core being cut from the sidewall of a borehole drilled in the earth with a core cutting means rigidly connected to a core barrel. The hollow truncated core is held in position inside the core barrel such that it does not rotate with the core cutting means during the cutting of a core.
A retrieval device, suitable among other uses for lifting solid and liquid materials from underground locations, comprises a generally cylindrical section, a plurality of projecting members extending from said generally cylindrical section and hinged or otherwise flexibly secured thereto so as to be capable of movement between a first position in which they are aligned with the surface of said generally cylindrical section and a second position in which they are inclined inwards towards the axis of the cylinder, and flexible webs extending between adjacent projecting members.
A core sampling device of the type utilized in forming concrete test cores in situ including a double-walled sleeve which is placed into the wet, fluid concrete in combination with an insertion tool whereby the sleeve, due to its configuration, may be pressed or "screwed" into the fluid concrete. By virtue of the double-walled construction of the sleeve, once the concrete has cured, the test core may be easily removed therefrom.
4346612 - Liquid sampler - Owned by The United States of America as represented by the Secretary of the Army (Washington, DC)
A liquid sampler, and particularly, a liquid sampler for sampling liquid taining frazil ice, employs a sampling tube open at both top and bottom which can be thrust into the liquid to be sampled and a membrane-type cylindrical valve which is closed by pulling a single string which is looped about the cylindrical membrane. A cutting shoe at the lower end of the sampling tube permits cutting through ice for obtaining the sample.
An in-place soil sampler assembly includes an outer barrel or tube coupled to a corer point at one end thereof. An inner samping tube is contained within the outer tube. A soil sample retainer has a support ring connected to one end of the inner sampling tube. The support ring carries a plurality of flexible arcuate leaves each having a base portion secured to the ring and each having an apex moveable with respect to the support ring between opened and closed position. A collar is mounted at the end of the outer tube to form a cavity for receiving the soil sample retainer when the leaves are opened for passage of a soil sample from the corer point into the inner sampling tube; the leaves are closed when the support ring is removed from the cavity so as to form a convex soil sample support surface facing in the direction of the inner sampling tube for holding a soil sample therein. The inner sampling tube and soil sampler retainer are removable from the outer tube as a unit while the outer tube remains in place to avoid disturbing soil samples taken from succeeding core sections.
