Kejr Engineering, Inc.

Kejr Inc.

Gregory H Scott

Thomas M Christy

Melvin P Kejr

Michael E Carlin

A soil sampler liner with areas of reduced wall thickness is defined by a continuous wall that has a reduced area extending along at least a portion of the length of the liner. The liner is inserted into the inner bore of a sampler probe, and a soil sample is taken by vertically inserting the probe and liner into the ground. The wall of the liner has at least two distinct areas of varying thickness; a reduced wall area and wall areas adjacent to the reduced wall area. The walls are sufficiently strong to withstand the forces applied to the liner when taking relatively large-diameter soil samples. The thickness of the wall at the reduced wall area is less than the thickness of the wall at the adjacent areas to permit a user to easily and safely cut through the wall at the reduced wall area and remove a large-diameter soil sample from the liner. The liner is also radially compressible into a flattened shape for compact and economical packaging and shipment of liners in relatively large quantities.

Soil sampler liner with areas of reduced wall thickness

A connector couples a pair of elongated rods in axial alignment for transmitting axial and rotational forces along a longitudinal axis of the rods through the connection. The connector includes interfitting male and female sections projecting in longitudinal extension from their corresponding respective rods, with the male section including an elongated transversely polygonal member having a transversely extending notch. The female section comprises an elongated channel having a cross-section configuration for complementally receiving the male section for rotation with the latter and having a transversely extending segment configured to be received in the notch when the rods are in axial alignment to lock the rods together for axial movement as a unit. The female section also includes a pair of elongated apertures respectively positioned on opposite facing surfaces of the channel relative to the longitudinal axis. The apertures communicate the channel with the exterior of the female section and are positioned to permit the sections to be moved into or removed from their connected positions when the rods are disposed in positions with their respective longitudinal axes at an angle with respect to one another.

Connector for coupling a pair of rods

An assembly for locking the drive point at the forward end of an elongated sample tube includes a tapered drive point presenting a threaded chamber, a bolt having a threaded stem, a collar disposed about the stem and a locking member disposed about the stem and adapted for engaging a recess near the forward end of the tube. The bolt head may present a tool receiving slot for remotely releasing the locked drive point assembly. The bolt stem may include a recessed groove for receiving a setscrew through the drive point to ensure that the bolt does not become completely disengaged from the drive point when the point is released from the forward end of the sample tube.

Drive point locking method and apparatus

A ground water sampling device has an elongated cylindrical hollow housing positioned at a desired depth below the ground surface. The housing has an opening formed at its lower end and an inner surface with an annular groove disposed adjacent the opening. The device has an elongated screen capable of being telescopically received in the housing and capable of being deployed through the opening of the housing. The screen has an annular slot formed on its outer surface adjacent its upper end. A resilient locking collar is compressed inwardly and received in the slot of the screen when the screen is received in the housing prior to its deployment. The collar expands outwardly into the groove of the housing when the slot of screen is longitudinally aligned with the groove during deployment of the screen. The collar in its expanded position is disposed in both the slot and the groove so that the screen is locked in its deployed position.

Growing community of inventors

Salina, KS, United States of America

Gregory H Scott