A method of designing a drill bit which comprises selecting a core material 76', selecting a bit crown material 13, configuring a hollow bit crown to be fabricated of the bit crown material where the hollow bit crown has a thickness sufficient to maintain a configuration as a quantity of molten core material is disposed therein. The bit crown material may be formed from a mixture of particulate ma...

A method of designing a drill bit which comprises selecting a core material 76', selecting a bit crown material 13, configuring a hollow bit crown to be fabricated of the bit crown material where the hollow bit crown has a thickness sufficient to maintain a configuration as a quantity of molten core material is disposed therein. The bit crown material may be formed from a mixture of particulate ma...

A hardfacing composition for a roller cone drill bit including a carbide phase comprising about 50-80% by weight of the hardfacing composition of a combination of 80-200 mesh macrocrystalline tungsten carbide and 80-200 mesh crushed cast carbide. The remainder of the hardfacing composition comprising a binder alloy. An further embodiment, for a hardfacing composition is included, comprising; a car...

A method of manufacturing a cutting element having a substrate and an ultra hard material layer sintered together where at least a portion of the substrate is partially densified prior to sintering, is provided.

A fabric for the forming, press and dryer sections of a paper machine, for use as a reinforcing base for a polymeric-resin-coated paper-processing belt or as a corrugator belt, or in other industrial settings where a material is being dewatered, is formed from a monofilament yarn, which is spirally wound in the form of a closed helix, adjacent turns thereof being abutted against and joined securel...

An electrochemical cell having a positive electrode, a negative electrode and an electrolyte is dosed with an additive which acts on the negative electrode to reduce electrolysis and, hence, water consumption of the cell during the course of operation of the cell, in particular when the cell is in a state of overcharge. The additive is arranged to reduce the flow of current between the electrodes ...

A collapsible mechanism for molding the bead of a tire includes a series of sectors (132,134) configured for radial and diagonal movement to selectively apply a continuous, uniform surface (148,150) for molding and shaping the bead. The sectors collapse into a retracted, release position to allow for placement of the tire within and removal of the tire from the mold.

An improved method and system for reducing the power consumption of computing devices capable of communicating over a wireless network allows longer device operation and/or the use of smaller batteries. The wireless computing device supports a low power channel for receiving control signals during idle periods of operation. When the computing device is idle, the device is configured to power down ...

The invention provides a separator in lead acid battery, composed of fiber material and polymers; the polymers provide functions of increasing the mechanical strength for separators, avoiding shortage between positive and negative electrodes, and decreasing the thickness of separators. The invention also provides a manufacturing method of battery separators, whereby polymers are used to coat or ab...

A terminal post (21) capable of delaying acidification thereof, mainly referring to the surface of a terminal post being formed with a plurality of grooves or protruding rings, so as to enlarge the contact surface between the posts and resin (12) filled in the interior of the lead-acid battery (1), for the purpose of avoiding or delaying sulfate solution to infiltrate towards the posts through cap...

A cermet cutting insert has a texture comprising a carbonitride hard phase primarily composed of Ti, a metal binding phase, and incidental impurities, wherein the binding phase comprises a Co-Ni-W alloy containing tungsten (W) : 15 to 35 percent by weight, nickel (Ni) : 10 to 35 percent by weight, and cobalt (Co) : 35 to 70 percent by weight, wherein the total amount of tungsten, nicke...

A frusto-conical body (15) of a tissue or foil impregnated with a synthetic resin carries inside a wear-resistant metal coating (20), intended for directly contacting the thread, made from a planar foil (20') cut by photoetching from a planar stainless steel sheet having a high surface hardness and shaped to a continuous, frusto-conical ring (20") by mutually joining the ends (20a-20b) of the foil...

For each quote entered into a computerized anonymous trading system, the system determines if it is waiting to be "hit" (would be matched with the first hit of a predetermined size) at a substantial number of trading floors, and if so, notifies the trader originating the quote. The substantial number of floors is preferably expressed as greater than a predetermined percentage of the available trad...

A packaging unit (1) for continuously producing aseptic sealed packages (2), containing a pourable food product, from a tube (14) of packaging material filled with the food product; the unit (1) has a first and second chain conveyor (10, 11) respectively having a number of jaws (12) and a number of counter-jaws (13), which interact with and grip the tube (14) to heat-seal cross sections of the tub...

A packaging unit (1) for continuously producing aseptic sealed packages (2), containing a pourable food product, from a tube (14) of packaging material filled with the food product and fed along a vertical supply path (A); the unit (1) has a first and second chain conveyor (10, 11) respectively having a number of jaws (12) and a number of counter-jaws (13), which interact with the tube (14) to gri...

To operate a bobbin winding station, to form cross wound bobbins, the workstation computer (32) sets the pressure action (APD) of the yarn brake (114,116) at the yarn tensioner (36) on the yarn (22), according to the measurements from the yarn take-off force sensor (54). The actual pressure force (APDist) is compared with a pressure threshold value (APDmax). If the threshold value is achieved or ...

The invention relates to a fire alarm (F) comprising at least one sensor (6, 14, 15) for detecting fire parameters and an evaluation circuit (7) which triggers an alarm signal if a defined first value is exceeded by a corresponding fire parameter. The at least one sensor (6, 14, 15) also monitors a second, greater value of the fire parameter concerned and if said second value is exceeded triggers ...

The present invention discloses a novel electrolyte for lead-acid battery. Said electrolyte contains no sulfuric acid, and has the following advantages: its service life is long (generally for about 3 years), the environmental pollution is greatly reduced, it is safe in use and carryover, and is not frozen within-20 deg.C, and its cost is low.

A computer tomography apparatus of this invention includes an x-ray tube configured to emit x-rays while rotating around an object to be examined, a radiation detector configured to have detection elements arranged in a plurality of rows along a slice-thickness direction, each row having a plurality of the detection elements configure to detect x-rays that had passed through the object, a data acq...

A lead cell baffle includes porous fiber material characterizing in the polymer absorbed in the hole, the said porous fiber is glass fiber, chemical synthetic fiber or glass fiber mixed chemical synthetic fiber, the polymer is phenol, resin or polymer of similar characteristics. The process method is to mainly spray, immerge, print, or adhere the baffle and cover or sbsorb the polymer on the baffl...