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91 results about "Contiguity" patented technology

A contiguity is a continuous mass, or a series of things in contact or in proximity. In a different meaning, contiguity is the state of being contiguous. The concept was first set out in the Law of Contiguity which states that things that occur near each other in time or space are readily associated.

Hybrid cemented carbide composites

Embodiments of the present invention include hybrid composite materials comprising a cemented carbide dispersed phase and a cemented carbide continuous phase. The contiguity ratio of the dispersed phase of embodiments may be less than or equal to 0.48. The hybrid composite material may have a hardness of the dispersed phase that is greater than the hardness of the continuous phase. For example, in certain embodiments of the hybrid composite material, the hardness of the dispersed phase is greater than or equal to 88 HRA and less than or equal to 95 HRA and the hardness of the continuous phase is greater than or equal to 78 and less than or equal to 91 HRA. Additional embodiments may include hybrid composite materials comprising a first cemented carbide dispersed phase wherein the volume fraction of the dispersed phase is less than 50 volume percent and a second cemented carbide continuous phase, wherein the contiguity ratio of the dispersed phase is less than or equal to 1.5 times the volume fraction of the dispersed phase in the composite material. The present invention also includes a method of making a hybrid cemented carbide composite by blending partially and / or fully sintered granules of the dispersed cemented carbide grade with “green” and / or unsintered granules of the continuous cemented carbide grade to provide a blend. The blend may then be consolidated to form a compact. Finally, the compact may be sintered to form a hybrid cemented carbide.
Owner:KENNAMETAL INC

Hybrid cemented carbide composites

Embodiments of the present invention include hybrid composite materials comprising a cemented carbide dispersed phase and a cemented carbide continuous phase. The contiguity ratio of the dispersed phase of embodiments may be less than or equal to 0.48. The hybrid composite material may have a hardness of the dispersed phase that is greater than the hardness of the continuous phase. For example, in certain embodiments of the hybrid composite material, the hardness of the dispersed phase is greater than or equal to 88 HRA and less than or equal to 95 HRA and the hardness of the continuous phase is greater than or equal to 78 and less than or equal to 91 HRA.Additional embodiments may include hybrid composite materials comprising a first cemented carbide dispersed phase wherein the volume fraction of the dispersed phase is less than 50 volume percent and a second cemented carbide continuous phase, wherein the contiguity ratio of the dispersed phase is less than or equal to 1.5 times the volume fraction of the dispersed phase in the composite material.The present invention also includes a method of making a hybrid cemented carbide composite by blending partially and / or fully sintered granules of the dispersed cemented carbide grade with “green” and / or unsintered granules of the continuous cemented carbide grade to provide a blend. The blend may then be consolidated to form a compact. Finally, the compact may be sintered to form a hybrid cemented carbide.
Owner:KENNAMETAL INC

Expandable belt and tread drum

A belt and tread drum having an annular shell comprising a plurality of circumferentially spaced segments, each of which is mounted on a carrier which disposed in circumscribing relationship to a generally cylindrical actuator rotatably connected with a reciprocating piston disposed within a cavity defined between the actuator and a hub fixed to a central core of the drum. Translational movement of the piston between extended and retracted positions in a direction parallel to the rotational axis of the drum is converted into selected rotational movement of the actuator relative to the hub. A plurality of sets of links interposed between the segments and the actuator and hub have their first ends commonly pivotally pinned to a segment. The second end of one link of each set of links is pivotally pinned to the actuator and the second end of the other link of each set of links is pivotally pinned to the hub. Rotation of the actuator relative to the hub controls the arcuate separation of these second ends such that bringing these second ends toward contiguity moves the segments radially outwardly, and conversely, moving these second ends arcuately apart serves to move the segments radially inwardly of the drum. A hand wheel establishes maximum and minimum rotational movement of the actuator and provides a visual indication of the radial positions of the several segments, i.e. the diameter of the drum.
Owner:DAVIAN ENTERPRISES LLC

Method for machining bearing block parts with precision dimensions

ActiveCN103612073AControl deformationNo more scrappingAviationFluorescence
The invention discloses a method for machining bearing block parts with precision dimensions. The method is characterized in that an independent important diameter dimension fine turning procedure is added after all machining procedures are completed; the flatness of a reference plane for the parts, the flatness of a disc chuck of a machine tool and the flatness of a fixture positioning surface are controlled, and process control on the coloring contiguity of the reference plane for the parts is strengthened; the disc chuck and a fixture surface of the machine tool are trimmed, so that the flatness of the fixture positioning surface can be guaranteed, the fitting degree between the machining reference plane for the parts and the fixture positioning surface is higher than 75%, and suspension of compressed positions is prevented. The method mainly includes rough lathing, stabilizing treatment, finish lathing, corrosion, boss plane milling, through hole linear cutting, semi-fine turning, planar groove electric sparkle treatment, fine turning, hole boring and elongated slot milling, inner plane and disc edge milling, plane and hole milling, inclined hole drilling, tapping, grinding, inner hole fine turning, fluorescence treatment and inspection. The method has the advantages that deformation of the aviation and aerospace bearing block parts with the precision dimensions in machining procedures can be effectively controlled, and the method is wide in application range and prospect.
Owner:SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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