1543 results about "Friction reducing" patented technology

A lubricating composition for internal combustion engines especially useful with fuels having less than 350 ppm sulfur comprises a lubricating oil basestock, a boron containing ashless dispersant, a molybdenum containing friction reducing agent, a metal type detergent and zinc dithiophosphate.

A process and process line is provided for preparing a friction-reduced hydraulic fracturing fluid at a central location which can be readily transported to an oil or gas well in a formation at a well site, comprising: preparing a mixture of polymer and water at the central location by shearing the polymer in the water in a high shear environment to create the friction-reduced hydraulic fracturing fluid; pumping the friction-reduced hydraulic fracturing fluid through a series of pumps and pipelines to the well site; and injecting the hydraulic fracturing fluid into the oil or gas well at a pressure sufficient to cause fracturing of the formation.

A self-adhesive bandage for prevention and treatment of skin breakdown by relief of friction and shear forces. The bandage includes a pair of thin film membranes, one of which is a portion of a dome and is free to move a limited distance with respect to the other. The dome is located on a skin contact layer that can be adhered to one's skin. A method of making such a bandage includes forming a dome in a flexible film and adhesively attaching a skirt surrounding the dome to a skin contact layer. Similar friction reducing devices may be incorporated in shoes, other clothing, or sports equipment.

A lubricant composition having improved lubricant properties, comprising: (a) a lubricating fluid; and (b) nano graphene platelets (NGPs) dispersed in the fluid, wherein nano graphene platelets have a proportion of 0.001% to 60% by weight based on the total weight of the fluid and the graphene platelets combined. Preferably, the composition comprises at least a single-layer graphene sheet. Preferably, the lubricating fluid contains a petroleum oil or synthetic oil and a dispersant or surfactant. With the addition of a thickener or a desired amount of NGPs, the lubricant becomes a grease composition. Compared with graphite nano particle- or carbon nanotube-modified lubricants, NGP-modified lubricants have much better thermal conductivity, friction-reducing capability, anti-wear performance, and viscosity stability.

The invention relates to an apparatus for machining hard tissue and soft tissue associated therewith, having a housing, a rotating shaft having an axis essentially parallel to a longitudinal axis of the apparatus, and adapted to provide power to the apparatus by rotation of the shaft, a drive assembly, having a gear having a rotational axis oriented perpendicular to the longitudinal axis of the apparatus and adapted to mesh with the rotating shaft, a gear hub rigidly attached to the gear, which rotates when the gear rotates, and adapted to attached to a bearing assembly, a bearing assembly having a moveable member rigidly attached to the gear hub, a non-moveable member rigidly attached to the housing, and one or more friction reducing members disposed between the moveable and non-moveable members, and two or more locking members adapted to generate opposing forces helping to hold the drive assembly together, and a cutting element rigidly attached to the drive assembly, wherein the gear hub and bearing assembly are press fit together and the gear and gear hub each comprise complementary interlocking noncircular geometries.

Disclosed is a tube for installing an optical fiber unit having lubricous surface, which is installed in a communication pipe. The tube for installation includes an inner layer having lubricant components to decrease friction against an optical fiber unit, and an outer layer provided around the inner layer and composed of polymer having a lower friction coefficient than polyethylene so as to decrease friction when the tube is installed in the communication pipe. The tube is easier to install than the conventional one due to decreased friction against the communication pipe.

In one embodiment, a wear band comprises a rotating element having a bore receivable on a tubular, the bore comprising first and second bore portions slidably receiving first and second sleeve bearings. Outer surfaces of the sleeve bearings slidably engage the bore portions and the bores of the sleeve bearings slidably engage the tubular. A first and a second stop collars may be received on the tubular to together straddle the rotating element and sleeve bearings to longitudinally secure the rotating element in a position on the tubular. The tubular may be included within a tubular string run into a borehole or into the bore of an installed casing, such as in casing while drilling. The rotating element provides stand-off between a tubular and the wall of a bore, reduces frictional resistance to longitudinal sliding and also to rotation of the tubular string within the bore.

A full functioning safety light bar and signal assembly for attachment to a vehicle hitch has a light system that uses a wiring harness assembly having one or more of the following lights: driving, brake / signal, flasher / emergency, reverse, marker, strobe, fog or illuminating lights. Electric sensors in the body of the light bar unit control strobe and illuminating lights. The assembly may match differently sized vehicle bumpers. Extension bars with light fixture assemblies can be attached to the light bar units to add greater illumination upon backing of the vehicle, and collars or strips of friction reducing materials may be attached on the hitch components to reduce vibration or noise. Locked protective covers are used to keep lights or lens in the light bar units from becoming scratched or damaged. Lockable security compartments are provided in the safety light bar to store items such as spare keys.

A friction reducing ship reduces frictional resistance between the external hull plate 1 and water W by ejecting air A from the external hull plate 1 into water W to generate micro-bubbles B on the surface of the external hull plate 1. A structural feature of the ship is that micro-bubbles B are generated by creating a negative pressure region in the water W admitted in the water intake opening 2a, disposed below the waterline WL in the bow section 1a, so as to eject atmospheric air above the water into the water to generate micro-bubbles B, and discharging the micro-bubbles B together with water to the water discharge opening 2b provided in the bottom section 1b.

A composition and method for breaking down and denaturing friction-reducing compound introduced into the ground during the drilling of oil wells and for destroying other contaminants and biohazards naturally present within and artificially introduced into oil wells, which are formed as a result of the drilling and pumping processes. The composition comprises several species of oxidizing agent compounds that are effective in breaking down hydrogen sulfide produced by bacteria as well as the friction-reducing polymer used during drilling and several other organic compounds.

An improved coated body having a nanocrystalline CVD coating of Ti(C,N,O) is disclosed. The coating is formed using the MTCVD process and including, as part of the gaseous mixture, CO, CO2 or mixtures thereof. The use of this dopant during the coating results in a much smaller, equiaxed grain size. The method of forming the body is also disclosed.

Disclosed is an introducer apparatus comprising an sleeve fixation mechanism or introducer member, such as a catheter, introducer, or ring-like structure, which is attached to a protective sleeve comprising a thin flexible material such a polymeric film. The sleeve is inverted into the passageway of a second member, such as a catheter, feeding tube, introducer, etc., that is advanced through the passageway of the introducer member and is introduced into a bodily passage of a patient, such as the bile duct, nasal passages, colon, etc. The sleeve everts from the passageway of the second member during its advancement to lay down a friction-reducing surface. The sleeve prevents frictional contact between the second member and delicate or sensitive tissues.