41results about How to "Low coefficient of friction" patented technology

An access port for use in laparoscopic surgery is disclosed. The port includes a duct having a one-way valve and a tubular seal. The one-way valve has opposed surfaces that co-apt in response to internal pressure within the duct. The tubular seal has an inner layer with a low friction coefficient surrounded by an outer elastic layer that biases the inner layer into sealing engagement with a surgical tool inserted through the duct. The one-way valve seals the duct in the absence of a tool extending through the duct. The low friction coefficient of the inner layer facilitates insertion and removal of the tool through the duct. The port has a distal end insertable into a pressurized cavity, and a proximal end that extends from the cavity and provides access thereto.

A laryngoscope blade for detachably connecting to a handle has a rigid skeleton to resist deformation or breakage. The blade includes a first end and a second opposite end. The first end is connectable to the handle. The second end is insertable through a patient's mouth and down the throat and / or hypopharynx to expose the voice box. A light conductor extends through the blade and transmits light from the handle to the second end. The blade has first and second surfaces extending between the first and second ends. The first surface faces and effectively diverts a patient's tongue when the second end is inserted into the patient's mouth and throat. A resilient cushion extends from the second surface. The cushion is supple and deformable to absorb pressure exerted on the cushion by inadvertent contact with the teeth while being inserted in the patient's mouth and throat. The cushion includes an outer skin with a relatively low coefficient of friction. The cushion helps to prevent or minimize accidental damage to the teeth with no restriction on the insertion of the blade.

A method and system for performing linear and circular movement patterns is provided. The method and the system include a limb-activated linearly and circularly moveable apparatus comprising a rotatable platform coupled to a slideable base. A limb gripping the apparatus can slide the apparatus across a surface while rotating the platform. The apparatus is designed to constantly realign the joints involved in the movements and without straining the joints of the body to maximize productivity and promote joint comfort.

A vehicle operation assisting system includes an assist yaw rate calculator which calculates an assist yaw rate necessary to avoid an obstacle based on a detection result of the obstacle by a radar device, an actual vehicle moving amount calculator which calculates an actual vehicle moving amount from a yaw rate and a lateral acceleration of a vehicle. When an avoiding operation detector determines an avoiding operation of a driver, a target vehicle moving amount setting device replaces a standard moving amount based on an avoiding operation of a driver with the assist yaw rate, and a vehicle movement controller controls lateral movement of the vehicle so that the actual vehicle moving amount agrees with the assist yaw rate. At this time, in addition to the yaw rate, the lateral acceleration is also used for calculating the actual vehicle moving amount, and therefore an upset of the vehicle behavior can be avoided by properly controlling the lateral movement of the vehicle on a road having a low friction coefficient on which the tires easily skid. A vehicle operation assisting system capable of properly performing an obstacle avoiding operation and a restoring operation even on a road having a low friction coefficient is thereby provided.

There is provided a conductive material comprising a base material made up of a Cu strip, a Cu—Sn alloy covering layer formed over a surface of the base material, containing Cu in a range of 20 to 70 at.%, and having an average thickness in a range of 0.1 to 3.0 μm, and an Sn covering layer formed over the Cu—Sn alloy covering layer having an average thickness in a range of 0.2 to 5.0 μm, disposed in that order, such that portions of the Cu—Sn alloy covering layer are exposed the surface of the Sn covering layer, and a ratio of an exposed area of the Cu—Sn alloy covering layer to the surface of the Sn covering layer is in a range of 3 to 75%. The surface of the conductive material is subjected to a reflow process and preferably, an arithmetic mean roughness Ra of the surface of the material in at least one direction, is not less than 0.15 μm while the arithmetic mean roughness Ra thereof, in all directions, is not more than 3.0 μm and the average thickness of the Cu—Sn alloy covering layer is preferably not less than 0.2 μm. The conductive material is fabricated by a method whereby the surface of the base material is subjected to roughening treatment, an Ni plating layer, a Cu plating layer and an Sn plating layer are formed, as necessary, over the surface of the base material, and subsequently, a reflow process is applied.

Disclosed is an image forming apparatus for lowering friction coefficient and lowering surface energy of photoconductor surface in particular, which comprises an electrophotographic photoconductor, charging unit, light exposure unit, developing unit, transferring unit, and fixing unit, the electrophotographic photoconductor comprises a photosensitive layer on a conductive support and fluoropolymer fine particles at the outermost layer, a part of the fluoropolymer fine particles are exposed above the surface of the outermost layer in configurations of primary particles and secondary particles formed by flocculation of plural primary particles, and sum of area ratios of particles in the configurations of the primary particles and the secondary particles, each particles having an average diameter D of 0.15 μm≦D≦3.0 μm as respective projected figures of exposed portion above the surface of the outermost layer, is 10% to 60% based on the entire surface area of the outermost layer, and wherein the binder resin in the outermost layer comprises a polyalylate copolymer resin having a structural unit of alkylene-aryldicarboxylate.

A garment has a pocket with an opening located at the waistband of the garment. A strap includes a stretchy membrane and at least one of the opposite ends of the strap extends into openings in the garment to form a horizontal pocket opening. The strap may be made of an elastic material. A fabric can conceal part of the strap and may surround or be attached to the strap. The pocket lining has front and rear walls attached together, with top horizontal portions of the front and rear wall attached behind an exposed portion of the strap. The walls of the pocket lining may be attached to two join seams of the garment. Stretching the strap outwards will open the pocket thus accessing belongings stored therein. When the pocket is closed, the elastic material of the strap provides stretch and recoil, securing any belongings safely inside the pocket.

The present invention provides a film for the protection of the surface of polarizer film. Said film surface has anti-static coated layer. The coating solution contains polythiophene, surfactant, binding resin and water. According to the present invention, said protection film on the surface on the polarizer film has the excellent anti-static, transmittance, anti-foul and water repellence. It is able to prevent the invasion of imbuing with dust, accumulative anti-static and water vapor from the processing of assembling and transportation so as to influence the quality of polarizer film.

An intermediate transfer member for electrophotography includes a substrate and a non-ceramer polyurethane compliant layer. Disposed directly on the compliant layer is an outermost surface layer consisting essentially of a non-particulate, non-elastomeric ceramer or fluoroceramer and nanosized inorganic particles that are distributed within the non-particulate ceramer or fluoroceramer in an amount of at least 5 and up to and including 50 weight % of the outermost surface layer. This intermediate transfer member can be incorporated into a suitable imaging apparatus for forming a toned image on a receiver element.

A dental implant system employs an improved abutment screw with acceptable biocompatibility, corrosion, strength, and preload characteristics. In particular, embodiments provide a dental implant system having an artificial implant and an abutment which are fastened with a screw formed from stainless steel, such as surgical grade 316L stainless steel. In some embodiments, the stainless steel screw is coated with a malleable material, such as gold, silver, or polytetraflouroethylene, to improve screw preload. Alternatively, the stainless steel screw may be coated with a harder material, such as diamond like carbon (DLC), amorphous diamond, crystalline diamond, or a combination thereof, which provides a low coefficient of friction providing improved preload properties.

A lightweight, mobile friction stir welding machine, a sticking pad for the friction stir welding machine, and a friction stir welding system are provided. The sticking pad has a flat base member facing an object, an annular sealing member protruding from one of major surfaces of the base member so as to surround a central area of the surface of the base member, a slippery member attached to the end surface of the annular sealing member facing the object, and one or some deformation-suppressing protrusions protruding from the surface facing the object of the base member. The slippery member is made of a material that can make the slippery member contact the object with a friction coefficient lower than that with which the sealing member can be in contact with the same object.

An economic ferrous sintered multilayer roll-formed bushing, a producing method of the same and a connecting device are provided, in which a ferrous sintered sliding material layer is tightly sintered-bonded to a back metal steel, the ferrous sintered sliding material layer being intended to have low coefficient of friction, having excellent seizing resistance and abrasion resistance and providing self-lubricating property so as to prolong a lubrication interval or eliminate the necessity of lubricating.The ferrous sintered multilayer roll-formed bushing according to the present invention comprises: a back metal steel; a ferrous sintered sliding material layer sinter-bonded to the back metal steel; a diffusion layer of ferrous alloy particle formed at the vicinity of the bonding boundary between the ferrous sintered sliding material layer and the back metal steel; and a Cu alloy phase formed at the vicinity of the bonding boundary and extending in the direction of the bonding boundary.

A copper zinc alloy that is used as a material for a sliding bearing wherein the alloy comprises 59-73% copper, 2.7-8.5% manganese, 1.5-6.3% aluminum, 0.2-4% silicon, 0.2-3% iron, 0-2% lead, 0-2% nickel, 0-0.4% tin, residual zinc and unavoidable impurities.

A dispensing aid is disclosed for facilitating removal of an individual product from a compressed package. The compressed package has multiple sides and contains a plurality of compressed products arranged in a row. Each of the products has first and second major surfaces. An opening is formed in the compressed package and is aligned perpendicular to the major surfaces of at least one of the products. The opening is sized to allow the products to be individually withdrawn. A slip sheet is positioned adjacent to at least the first major surface of the first product to be withdrawn. The slip sheet to the adjacent product has a lower average coefficient of friction value than the average coefficient of friction value of the first major surface of the product being withdrawn to an adjacent product. The slip sheet functions to reduce the force needed to remove the first product from the compressed package.

A fabric material including a plurality of strands of a warp yarn positioned in a warp direction, a plurality of strands of a first filling yarn positioned in a filling direction, each being impregnated by silver ions, and a plurality of strands of a second filling yarn positioned in the filling direction, each being impregnated by copper ions. The strands of said warp yarn are woven with those of the first and second filling yarns to form a face side and a back side, and the strands of the first and second filling yarns are woven alternately relative to one another with the strands of said warp yarn in said filling direction. The fabric material may be a satin, plain or twill pattern, and can be used as a bed sheet having a low coefficient of friction, wickability, absorbency, and “cool to the touch” properties.

A mating arrow mounted slide and arrow rest cradle assembly for bowfishing and bowhunting utilizes an arrow shaft mounted slide that is releasably snapped into a cradle carried by the riser of a bow, in which the slide cradle combination provides a tight arrow rest as well as an anchoring mechanism for one end of a line when used for bowfishing. When the arrow is released the slide unsnaps from the cradle and moves in unison with the arrow as the arrow moves out of the bow.

A vehicle traveling control apparatus comprises abnormality monitoring means for determining whether or not a driver of a vehicle is in an abnormal state where the driver loses an ability to drive the vehicle, and decelerating means for decelerating the vehicle to automatically stop the vehicle after a conclusive abnormality determination time point which is a time point when the abnormality monitoring means finalizes the determination that the driver is in the abnormal state. The decelerating means is configured to prohibit the deceleration of the vehicle when the vehicle is in the deceleration prohibition situation after the conclusive abnormality determination time point.

Disclosed herein are novel or improved microporous battery separator membranes, separators, batteries including such separators, methods of making such membranes, separators, and / or batteries, and / or methods of using such membranes, separators and / or batteries. Further disclosed are laminated multilayer polyolefin membranes with exterior layers comprising one or more polyethylenes, which exterior layers are designed to provide an exterior surface that has a low pin removal force. Further disclosed are battery separator membranes having increased electrolyte absorption capacity at the separator / electrode interface region, which may improve cycling. Further disclosed are battery separator membranes having improved adhesion to any number of coatings. Also described are battery separator membranes having a tunable thermal shutdown where the onset temperature of thermal shutdown may be raised or lowered and the rate of thermal shutdown may be changed or increased. Also disclosed are multilayer battery separator membranes having enhanced web handling performance during manufacturing processes and coating operations.

A lubricant composition is disclosed which can largely reduce abrasion, can exhibit a low friction coefficient steadily, and has a high corrosion resistance in the lubrication of an iron-based sliding member. The lubricant composition includes a lubricant base oil, a 3,4,5-trihydroxybenzoic acid ester in an amount of 0.01 to 10 mass % relative to the total amount of the lubricant composition, and a detergent dispersant in an amount of 0.1 to 20 mass % relative to the total amount of the lubricant composition.

A polyolefin rubber composition comprising (A) an ethylene / α-olefin / nonconjugated polyene random copolymer, (B) an organohydrogenpolysiloxane containing on average from 1 to less than 2 Si—H groups in a molecule, and (C) an addition reaction catalyst can be compression molded or steam vulcanized into a cured product having heat resistance and surface lubricity. The cured product is especially suited as weatherstrips and windshield wiper blades.

The invention aims at providing a preparation method of a wearable seal coating with a titanium fire preventing function. The preparation method is characterized in that the wearable seal coating is a three-layer coating system, wherein a bottom layer is an Ni3Al coating, a middle layer is a ZrO2.Y2O3 heat insulation coating, and a surface layer is a CuAl / BN wearable seal coating. The wearable seal coating is prepared by adopting a plasma spraying method, process parameters are as follows: the bottom layer has a process current of 500-520A and a spraying distance of 120-140mm as well as a spraying power of 30-36kW, the middle layer has a process current of 600-620A and a spraying distance of 80-110mm as well as a spraying power of 42-46kW, and the surface layer has a process current of 360-420A and a spraying distance of 110-130mm as well as a spraying power of 20-25kW. The three-layer coating system has better heat insulation performance, a certain scouring resistance, better wearability and low friction coefficient, and can be used as a titanium fire preventing coating of a titanium alloy casing.

The invention discloses a preparation method of novel two-dimensional material reinforced polyethylene glycol lubricating oil. The preparation method comprises the following steps: step I, adding Ti3AlC2 powder into an HF solution, performing the corrosion reaction, magnetically stirring for a plurality of time, then centrifugally washing, vacuum drying, and obtaining Ti3C2 powder; step II, mixingthe Ti3C3 powder in step I and an intercalating solvent, stirring, washing, drying, and obtaining the processed Ti3C2 powder; step III, dissolving the Ti3C2 powder processed in step II in the deionized water, ultrasonically processing, centrifuging, collecting supernatant, drying, and obtaining Ti3C2 two-dimensional nanosheets; and step IV, stirring and mixing the Ti3C2 two-dimensional nanosheetsobtained in the step III and polyethylene glycol, preparing different solutions of different concentrations, ultrasonically processing, and then performing the friction abrasion experiment. The preparation method has the advantages of excellent cooling performance, difficulty in combustion, low pollution, low cost and the like.

A sliding member includes: a metal substrate; an undercoat primer layer that is formed on a sliding surface of the metal substrate; and a resin layer that is formed on the undercoat primer layer. The resin layer is formed by curing a composition layer containing a bifunctional bisphenol A type epoxy resin, a leveling agent, and a polymerization initiator.

The invention relates to a retractile finger (1) for fitting to a grain harvester auger (3) main shaft (2), which retractile finger comprises an elongated portion (4) having at one of its ends a portion in the form of a guide (5) for fitting to the above-mentioned shaft (2), the elongated portion (4) and the portion in the form of a guide (5) being formed in one piece made of polyethylene with a molar mass of between 3.9 and 10.5 million g / mol.

A sealing element for a ball valve with a first sealing ring and a second sealing ring whose central axes are parallel, the first sealing ring and the second sealing ring being made of different materials, and the first sealing ring being located on a side of the second sealing ring facing towards a ball in a ball valve in an axial direction, and being used to make contact with a spherical surface of the ball to form a seat The first and second sealing rings are fixed together, and the first sealing ring is a stamped annular polytetrafluoroethylene (PTFE) sheet. Since PTFE has a very low friction coefficient, the friction torque between the first sealing ring and the spherical surface of the ball is relatively small, and the first sealing ring does not wear easily and is not prone to sealing failure. A ball valve using the sealing element is also disclosed.

A sports board has a board body having a top surface and an opposed bottom surface, a binding attachment structure formed on or in the board body, and a plurality of ribs collectively having longitudinal portions and transverse portions each having a thickness and a height that are predetermined to provide the sports board with a preselected longitudinal, transverse, and torsional stiffness desirable for sliding on the snow.

A magnetic climbing system comprising a plurality of magnet units adapted to be attached to the body of a user or to a robot or robot platform is described. The magnet units each comprise a permanent magnet unit for generating an attractive force between the magnet unit and a ferrous or magnetic structure. The magnet units further comprise an electromagnet arranged to operate in a first and a second state thereby generating a different magnetic flux leaving the magnet unit (and thus required for generating the attractive force). As such, the magnetic climbing system as described enables the generation of larger attractive forces, compared to known climbing systems. As a consequence, the climbing system according to the present invention may pose less stringent conditions to the friction coefficient of the surface that is climbed. It also creates the possibility of ceiling walking.