69results about How to "Coefficient of friction" patented technology

A method and apparatus for applying tabs to a traveling web of material at a transfer position when the tabs are provided to the transfer position in a path that is skew to the web travel path. A tab supply assembly carries the tabs in a tab path that is either perpendicularly skew or obliquely skew to the travel path of the web. The web is generally spaced from the tab supply assembly. A plurality of bump transfer surfaces is adapted to urge the web towards the tab supply assembly, thereby contacting a tab.

[Purpose] A belt drive system, in which a drive belt 20 is wrapped between a drive pulley 1 drivingly connected to a drive source 11 and a driven pulley 2 connected to an driven unit 12 via a joint 32 provided to stop torque transmission when receiving a load equal to or over a predetermined value and torque is transmitted via the drive belt 20 from the drive pulley 1 to the driven pulley 2, ensures that when the driven unit 12 malfunctions, the joint 32 stops the torque transmission without unnecessarily increasing the coefficient of friction against the driven pulley 2 or the belt tension.[Solution] The belt drive system is configured so that when a slip corresponding to the load on the joint 32 equal to or over the predetermined value occurs between the drive belt 20 and the driven pulley 2, the coefficient of friction between the drive belt 20 and the driven pulley 2 becomes higher than that before the slip occurs.

An inhalator, an inhalator component and a method for manufacturing an inhalator component. The inhalator and inhalator component have at least one surface made of polymer material that includes a coating layer. The coating layer substantially reduces moisture penetration through the surface and lowers the specific electric resistance of the surface.

The invention relates to a variable-pitch vane for a turbomachine compressor, the vane including a bushing mounted to rotate about a guide pivot of the vane for mounting in a casing of the turbomachine, the pivoting contact between the bushing and the guide pivot being of the nickel-graphite and titanium type.

The present invention relates to a method of manufacturing enamels selected from: polyurethanes, polyamides, polyamide-imides, polyesters, polyester-imides, polyester amide-imides, polyimides, polyepoxy compounds, and polyphenyl oxide compounds; said method comprising an operation in which a functionalized polysiloxane oligomer is obtained by causing a functionalized polysiloxane having a reactive first functional group to react with a first functionalized monomer used in synthesizing said enamel, said first monomer having a second functionalized group that reacts with said first functional group. According to the invention, the method subsequently comprises the following operations: said functionalized polysiloxane oligomer is caused to react with a second functionalized monomer that is used in synthesizing said enamel, said second monomer having a third functional group that reacts with said functionalized polysiloxane oligomer, thereby obtaining a grafted polysiloxane having organic chains that are identical to those of said enamel; and said enamel is synthesized using said first and second monomers and said grafted polysiloxane.

A stick shift handle assembly has a stick shift handle and an actuator for releasing the stick shift handle for movement between a plurality of gear positions. The actuator has a housing. A sleeve is disposed between the actuator and the housing. The sleeve has a first co-efficient of friction lower than a second co-efficient of friction of the housing.

A yarn for strands of an artificial turf ground cover, including a tape filament (4) having a core layer (8) and two outer layers (9) of a different material than the core layer (8), each on one of two opposite sides of the core layer. The core layer (8) contains at least polyester or polyolefin material, and the outer layers (9) contain high-density polyethylene. An artificial turf ground cover and a playing field including such a yarn and a method for producing such a yarn are also described. The high-density polyethylene has a relatively small coefficient of friction with the human skin and the yarn has a good shape recovery after deformation in spite of containing HDPE in outer layers.

Steel substrate suitable for forming operations which includes a coating thereon wherein the coating includes a corrosion resistant layer of polyamide-imide having a dry film thickness between 1 and 10 μm.

A paper-feeding roller including a rubber composition containing short fibers in which the short fibers has an average fiber diameter not less than 10 μm nor more than 100 μm and an average fiber length not less than 0.01 mm nor more than 4 mm. At least one part of all of the short fibers is radially oriented at an angle not less than 10 degrees nor more than 90 degrees with respect to a plane which contacts a surface of the paper-feeding roller, with one end of each of the radially oriented short fibers disposed exposably on the surface of the paper-feeding roller.

A yarn for strands of an artificial turf ground cover, including a tape filament (4) having a core layer (8) and two outer layers (9) of a different material than the core layer (8), each on one of two opposite sides of the core layer. The core layer (8) contains at least polyester or polyolefin material, and the outer layers (9) contain high-density polyethylene. An artificial turf ground cover and a playing field including such a yarn and a method for producing such a yarn are also described. The high-density polyethylene has a relatively small coefficient of friction with the human skin and the yarn has a good shape recovery after deformation in spite of containing HDPE in outer layers.

An electric power steering device is provided with a construction that can suppress the generation of stick slip between the outer peripheral face of a rotation shaft (13), and the inner peripheral face of inner rings (20a, 20b) of rolling bearings (19a, 19b). Therefore, in the present invention a lubricant (24) or an elastomer (25) is interposed between the inner peripheral face of at least one of the inner rings of the inner rings (20a, 20b), and the outer peripheral face of the rotation shaft (13). Additionally in the case where a lubricant (24) is interposed at a part of the rotation shaft (13), there is provided a surface for retaining the lubricant in this part.

The coefficient of friction of an elastomeric sample can be determined by: (a) providing a friction test machine having a rigid wheel with an outer surface defining a curvilinear friction surface, a sample holder and, a force measurement device; (b) placing the elastomeric sample onto the sample holder; (c) adjusting the elastomeric sample and the curvilinear friction surface into frictional engagement thereby forming a curvilinear deformation in the elastomeric sample; (d) rotating the rigid wheel; and, (e) using the force measurement device to obtain a geometry independent measurement indicative of the coefficient of friction of the elastomeric sample.

In a rotary connector in which a movable body rotating with rotation and revolution of a planetary gear and a flat cable having a reversed portion are housed within a housing space defined between outer and inner cylindrical bodies, restricting walls extending in the circumferential direction with an opening therebetween are erected on the movable body molded of resin, the reversed portion is passed through the opening, and the radial movement of the flat cable is restricted. A plurality of groove portions are formed in the inner peripheral surfaces of the restricting walls so as to be continuous with one another along the circumferential direction, and the depth d of the groove portions and the central angle θ corresponding to the length in the circumferential direction of the groove portions are set within ranges of 0.5 mm≦d≦2.0 mm and 5 degrees≦θ≦30 degrees.

A lubricating oil composition contains a lubricating base oil and components (A) to (D): (A) a primary amine; (B) a tertiary amine; (C) at least one of metal sulfonate, metal phenate and metal salicylate; and (D) at least one of acid phosphate and acid phosphite.

An emergency determination mechanism determines whether the necessity of an emergency stop of a vehicle is high. If the emergency determination mechanism determines that the necessity of the emergency stop is high, a granular object sprinkling device sprinkles granular objects on a road surface in front of a vehicle in a running direction. At the same time, when the granular object sprinkling device is operated to sprinkle the granular objects, an ABS control device changes the setting of a target slip ratio as a target value in ABS control from a relatively small first value to a relatively large second value.

An exhaust gas treatment device for an exhaust gas system of an internal combustion engine, in particular of a motor vehicle, includes a housing and at least one exhaust gas treatment insert arranged in the housing and sheathed by bearing material on the circumference. To improve the axial fixation of the position of the exhaust gas treatment insert in the housing, at least one frictional structure is provided between the bearing material and the housing.

The invention relates to a gear drive unit (10), in particular to adjust moveable parts in a motor vehicle, with a gear housing (15) and a shaft (18) positioned therein along a longitudinal axis (30), which shaft is supported on the housing (15) via an axial stopping face (35) on a counter stopping face (36), wherein at least one of the stopping faces (35, 36) is inclined perpendicular to the longitudinal axis (30) against a plane (42) by an angle of inclination (40) in order to generate an axial force, and a component (44), which cooperates with at least one of the stopping faces (35, 36), is arranged in a displaceable manner perpendicular to the longitudinal axis (30). In doing so, the coefficient of friction between the at least one stopping face (35, 36) and the component (44) is greater than the tangent of the angle of inclination (40).

A chip-card-receiving device has a carriage for holding a chip card, means for fixing and releasing a chip card, and a clamping element. The carriage is displaceably mounted between an insertion / removal position and a reading / writing position on a carrier. The clamping element is spring-mounted on the carriage such that the clamping element rests resiliently on an inserted chip card. The clamping element has ramps formed on the carrier such that the clamping element is lifted from a plane of the chip card in an insertion / removal position of the carriage.

Disclosed is a wiper which is which is highly retentive of water, soft to the touch, and improved in sheet strength and a method for manufacturing the same. An interlining layer contains pulp fibers, first and second surfacing layers contain non-fusible fibers, and a reinforcing layer contains fusible fibers and rayon fibers. The fusible fibers are fusion-bonded but the non-fusible fibers remain unfused. Sheet surfaces are free from the fusible fibers.

The invention discloses a grease-storing bearing retainer with rectangular R pockets. The bearing retainer is provided with ball holes and is characterized in that the ball holes are the rectangular R pockets with arc corners, and pits are formed in the wall surfaces of the rectangular R pockets and contact balls. The bearing retainer has the beneficial effects that as the pockets are rectangular, a peripheral clearance is reduced by 70%, and an axial floating space is enlarged by 80%; the R pits are formed in the wall surfaces of the rectangular R pockets, and R is slightly less than the radian of the balls, thereby achieving the aims of storing the lubricating grease to generate a grease film so as to reduce a friction coefficient; and the R pits are formed in the wall surfaces of the rectangular R pockets and play a role in guiding the design of an R pit structure. The bearing retainer can ensure that a bearing runs stably and rotatably with high precision when working at a high speed and an ultrahigh speed, break through the conditions of low precision and heating of the conventional bearing at a high speed, and improve the precision of whole machinery equipment.

The coefficient of friction of an elastomeric sample can be determined by: (a) providing a friction test machine having a rigid wheel with an outer surface defining a curvilinear friction surface, a sample holder and, a force measurement device; (b) placing the elastomeric sample onto the sample holder; (c) adjusting the elastomeric sample and the curvilinear friction surface into frictional engagement thereby forming a curvilinear deformation in the elastomeric sample; (d) rotating the rigid wheel; and, (e) using the force measurement device to obtain a geometry independent measurement indicative of the coefficient of friction of the elastomeric sample.

A thumb protector comprising an upper layer attached to a lower layer at first distal ends with an attachment mechanism to connect second distal ends of the upper and lower layers is provided. The second distal ends of the layers form an aperture and have a circumference smaller than a thumb circumference to retain the thumb protector on the thumb. The lower layer is soft and elastic to disperse pressure applied to an external surface of the lower layer to thereby reduce pressure applied to the thumb to prevent soreness and callous formation while still imparting a natural sense of feel.

A paper-feeding roller including a rubber composition containing short fibers in which the short fibers has an average fiber diameter not less than 10 μm nor more than 100 μm and an average fiber length not less than 0.01 mm nor more than 4 mm. At least one part of all of the short fibers is radially oriented at an angle not less than 10 degrees nor more than 90 degrees with respect to a plane which contacts a surface of the paper-feeding roller, with one end of each of the radially oriented short fibers disposed exposably on the surface of the paper-feeding roller.