A core member for a high-strength, light-weight panel for use as a temporary landing field mat, decking for trucks, tractors, rail cars, or the like is disclosed. The panel has a cover member secured to one side of the core member. The core member has a first core strip. The first core strip has a first bonding section provided with a first bonding flange projecting from one end of the first bonding section. A first bonding portion is provided on one side of the first bonding section. The first ...

The invention relates to a plastic drill core tray of the type having a plurality of longitudinally extending channels disposed in a side by side relationship which are dished in cross-section to contain a drill core. The effective contained angle of the cross-section at the dished bottom of the channels is greater than 90.degree.. The plastic tray is reinforced with elongated metal reinforcing ribs having a U-shaped cross-section. The ribs are adhered to adjacent longitudinally extending margin...

A core tray constructed of a lightweight material with individual flutes each having an arc shaped bottom, to accommodate a cylindrical core sample, and upstanding side and divider walls, to separate one sample from another. The core tray has sloping side walls terminating at their upper ends in rounded shoulders and legs are formed on the bottoms of the side walls. Rounded junctions are formed between the legs and tray bottom, which are arranged such that the top of one core tray will slide eas...

There is disclosed in the present specification a core chuck including a deformable outer sleeve of elastomer or equivalent material and a multi-lobar generally rigid internal actuator for expanding the sleeve as a result of relative angular motion in either direction between the sleeve and the actuator from their at-rest positions. The sleeve is non-cylindrical having a plurality of core engaging ridges and is compressible for initial insertion into the core.

A core plug for mounting in the opposite ends of a tubular roll of material for rotatably supporting the roll about a spindle. The core comprises an annular, web-like, base portion which includes an axially-extended sleeve member defining a central opening adapted to receive the spindle member. A generally cylindrical rim integral with the base portion terminates in a radially-extending flange at the end of the rim opposite the base portion. A plurality of stiffening members are located intermed...

A core plug for insertion into a bore defined by relatively soft material to maintain the shape of the bore. The core plug has a cylindrical wooden body and a plurality of resilient, wire members extending circumferentially about the body. The wire members are formed with a point projecting radially out from the body which dig into the soft material to prevent the plug from readily moving out of the bore after being inserted into it. The wire members are mounted by their ends in a shallow groove...

A core drill has a fixed disk and a movable disk within the drilling cylinder. Both disks are tapered at their periphery and a tension ring is placed around the peripheries. The drilling cylinder is driven through the ring and the disks. A center drill is provided in the drilling cylinder for centering prior to the drilling with said cylinder. SUMMARY OF THE INVENTION The present invention relates to a core drill which is used for a large bore drilling of mortar, timber, bamboo, Japanese-style w...

In an arrangement of an initial core, the core is loaded with 572 high enrichment fuel assemblies H with 4.2 wt % average enrichment and 300 low enrichment fuel assemblies L with 1.5 wt % average enrichment. The average enrichment of the core is about 3.3 wt %. In this core, only the low enrichment fuel assemblies are loaded into the most outer position of the core and the high enrichment fuel assemblies are loaded into an area other than the most outer position. In this arrangement, the average...

A dust core consists essentially of ferromagnetic powder; and an insulating binder, in which the ferromagnetic powder is dispersed; wherein the insulating binder is a silicone resin comprising a trifunctional alkyl-phenyl silicone resin and optionally containing an inorganic insulator such as an inorganic oxide, carbide or nitride. Preferably the alkyl-phenyl silicone resin is a methyl-phenyl silicone resin and comprises about 20 to 70 mol % of trifunctional groups. The dust core can be produced...

A transformer core that can realize a winding having a fractional number of turns. At least one of the two side posts of the transformer core has a trench or a through hole. The winding on the side post passes through the trench or the through hole. For a POT-type transformer core, the trench or the through hole is formed on the bobbin, and winding passes through the trench or the through hole on the bobbin.