A polyetherimide of improved color and processes for preparing the polyetherimide are disclosed.

A radially conveying stirring device with at least one stirring element hub configured to rotate about a rotational axis, with at least one stirring blade and with at least one carrier arm connecting the stirring blade to the stirring element hub, wherein there is at least one half-line which starts from the rotational axis, goes through a center of mass of a connecting surface area of the carrier arm to the stirring element hub and is free from intersection points with the stirring blade, and wherein the stirring blade features at least one beveling dividing the stirring blade into at least two stirring blade sections, wherein the carrier arm is embodied at least substantially L-shaped, wherein the beveling is arranged at least substantially in parallel to the rotational axis.

A blade member has a shaft portion connected to a rotating shaft, and a blade plate portion projecting from the shaft portion toward an outer peripheral wall of a container. The blade plate portion has a plane-like configuration without being formed with a through-out portion, and extends in an up-and-down direction along the shaft portion. The blade plate portion has a projection portion, at a tip end side apart from the shaft portion, projecting upwardly. A top portion of the projection portion is non-edge surface without being formed with an angled portion.

A blender base is generally described. The blender base includes a base frame. An outer shell may be connected to the base frame. A motor housing is supported by the base frame and positioned inside the outer shell. The motor housing is isolated from direct connection with the outer shell to reduce the transfer of noise and vibration from the motor to the outer shell.

A dynamic mixer, useful for mixing components of viscous compounds, in particular for components of dental impression compounds, and use thereof, the mixer having a mixing tube that contains a drivable rotor and that has on one end an end wall having at least two inlet openings for components, and at the other end an outlet opening for the mixture thereof. The rotor has a rotor disk having at least one entraining element that faces the end wall, and at least one rotor disk opening for the components to pass through to the side of the rotor disk that is remote from the end wall. At least one mixing element is arranged on the rotor hub between the rotor disk and the outlet opening. At least one projecting pin is arranged on the end wall toward the rotor disk, and the at least one entraining element has at least one recess for the at least one pin.

A kneading tool of a type prearranged for being mounted rotatable about an axis of rotation of a kneading machine includes: a central shaft defining a main axis; and plurality of arms transverse to said shaft, which are positioned in different orientations about the main axis and/or in different positions along said axis so as to be staggered and not overlying with respect to one another.

An automated computer-controlled sampling system and related methods for collecting, processing, and analyzing agricultural samples for various chemical properties such as plant available nutrients. The sampling system allows multiple samples to be processed and analyzed for different analytes or chemical properties in a simultaneous concurrent or semi-concurrent manner. Advantageously, the system can process soil samples in the as collected condition without drying or grinding. The system generally includes a sample preparation sub-system which receives soil samples collected by a probe collection sub-system and produces a slurry (i.e. mixture of soil, vegetation, and/or manure and water), and a chemical analysis sub-system which processes the prepared slurry samples for quantifying multiple analytes and/or chemical properties of the sample. The sample preparation and chemical analysis sub-systems can be used to analyze soil, vegetation, and/or manure samples.

A fluid mixing system includes a container, such as a flexible bag, bounding a compartment. A flexible drive line is disposed within the compartment, the drive line having a first end rotatably connected to a first end of the container and an opposing second end rotatably connected to a second end of the container. At least one mixing element, such as an impeller, can be coupled with the flexible drive line. Rotation of the drive line facilitates rotation of the impeller within the container.

A stirring device has at least one at least substantially metallic stirring blade carrier and a plurality of stirring blades, which are connected to the stirring blade carrier, wherein the stirring blades are at least substantially made of a non-metallic material, wherein the non-metallic material is a ceramic material, wherein the stirring blades are releasably connected to the stirring blade carrier, wherein it is possible to release and/or establish a mechanical, namely a negative-fit and/or positive-fit connection between the stirring blades and the stirring blade carrier in a damage-free and/or non-destructive manner, and wherein the stirring blade carrier comprises at least one recess, which is configured to at least partly accommodate at least one of the stirring blades.

The recess comprises at least one partial region implemented in a contiguous fashion if viewed in parallel to a rotational axis of the stirring blade carrier.

A mixing tool has an elongated tubular conduit with a flattened portion at a lower end, a garden hose fitting joined to an upper end, a mixing blade having one or more horizontal wings, a tapered lower end, and an extension at an upper end inserted into the flattened portion and fastened through walls of the flattened portion, and two opposing, horizontal hand grips joined to the elongated tubular conduit at a position closer to the garden hose fitting than to the mixing blade. A user is enabled to prepare a pourable concrete mix by inserting the mixing blade into a quantity of dry ingredients, connecting a garden hose, causing water to flow through the elongated tubular conduit, around the mixing blade extension, into the dry ingredients, and turning the mixing blade by manipulating the opposing horizontal handgrips, to mix the moistened dry ingredients into the pourable concrete mix.