36results about How to "Maintain friction" patented technology

An engine oil composition is composed of: (1) at least one oil selected from the group consisting of a mineral oil and a synthetic lubricant as a base oil; (2) a molybdenum dithiocarbamate in an amount of 50 to 2000 ppm by weight when calculated as molybdenum (Mo), relative to the total weight of the engine oil composition; (3) zinc dithiophosphate in an amount of 0.01 to 0.2 wt % when calculated as phosphorus (P), relative to the total amount of the engine oil composition; and (4) an ashless organic polysulfide compound in an amount of 0.01 to 0.4 wt % when calculated as sulfur (S), relative to the total amount of the engine oil composition.

A hinge has a sleeve and a shaft and is mounted between a cover and a base of an electrical device. The sleeve is hollow, is attached to the base and has an internal diameter. The shaft is attached to the cover, is mounted pivotally in the sleeve and has a hollow torsion rod. The torsion rod has an external diameter, an opening end and multiple slots. The external diameter of the torsion rod is bigger than the internal diameter of the sleeve to provide friction. The slots are formed in the torsion rod without communicating with the opening end to provide uniform friction. Because the torsion rod is hollow to provide spaces for the torsion rod to be deformed, the torsion rod maintains its shape. Therefore the torsion rod provides uniform friction with the sleeve.

The apparatus of the present invention provides an improved automotive accessory drive system. The automotive accessory drive system including a drive pulley operatively connected to an engine, and a plurality of driven pulleys operatively connected to one of a plurality of driven devices. A flexible drive belt connectively couples the drive pulley and the plurality of driven pulleys, and is operable to transfer drive forces therebetween. The automotive accessory drive system also includes a flexible drive belt tensioner operable to maintain frictional engagement between the flexible drive belt and the drive pulley and at least one of the driven pulleys. The flexible drive belt tensioner has a damper element that preferably includes a damper housing, and a variable viscosity fluid disposed within the damper housing. The variable viscosity fluid is configured to provide a variable dampening rate and is selectively operable to lock the flexible drive belt tensioner.

The invention relates to the field of daily necessities, in particular to a cleaning device and a manufacturing method of the cleaning device. The cleaning device comprises at least one monofilament, the monofilament comprises a filamentous low-melting-point polyester fiber filament, and the polyester fiber filament is wrapped by a fiber wrapping layer. According to the cleaning device and the manufacturing method of the cleaning device, materials are formed by combining low-melting-point polyester fibers and polyester fibers or polypropylene fibers, the materials are wound and are in the shape of the cleaning device, the hardness and friction force of the cleaning device can be kept through the characteristics of the low-melting-point polyester fiber materials, and the cleaning capacity of the cleaning device is guaranteed finally. It is guaranteed that friction force and hardness of the cleaning device cannot be too large through chinlon materials with the outer layers covered with threads, the low-melting-point polyester fibers are prevented from scratching objects, and the cleaning device and the manufacturing method can be widely applied to cleaning balls and net-shaped or block-shaped cleaning products.

An automatic belt biasing device is provided for biasing a drive belt into frictional contact with rollers of a conveyor. The belt biasing device maintains a drive belt in contact with rollers of a live roller conveyor to provide drive for the rollers to propel items or packages along the conveyor. A spring attached to a pivot arm or pair of scissoring pivot arms adjusts a biasing force applied by guide wheels of the belt biasing device to the drive belt due to changes in drive belt tension. The belt biasing device may be selectively adjustable based on required roller pitch distances. The belt biasing device is pivotably coupled to the roller conveyor allowing the guide wheels to apply equal pressure to the drive belt while allowing the pivot arms to actuate and increase or decrease the biasing force provided by the belt biasing device.

The invention discloses a paper feeding wheel and a manufacturing method thereof. The paper feeding wheel consists of a plastic framework and a rubber wheel sleeved on the plastic framework, wherein the rubber wheel is made of a rubber composition; and the rubber composition comprises rubber with high wear resistance and strength, an effective rubber vulcanizing system, more than one antioxidants, and a proper amount of reinforcing filler and softening agent, wherein the effective rubber vulcanizing system is suitable for a composition of butadiene rubber and natural rubber; one of the more than one antioxidant has a function of assisting in demoulding after rubber is vulcanized; and the proper amount of reinforcing filler and softening agent can improve the strength of the rubber wheel and cannot obviously improve hardness. The invention has the advantages that: the manufacturing process is simple, and the rubber wheel is formed by a mold through one-time compression moulding, and is not required to be processed; the surface of the paper feeding wheel is hardly subjected to frost spray; and the frictional property of the surface of the paper feeding wheel can be kept for a long time.

The invention discloses an anti-falling screw, which belongs to the field of fasteners. The structure includes a screw head and a screw rod. The screw head is a circular cylinder with a layer of wear-resistant coating sprayed on the surface. The structure overlaps a word groove and a cross groove, and the groove is provided with a magnet adsorption film and a wear-resistant layer, and a wing-shaped protective edge is provided around the screw head cylinder; the surface of the screw rod forms an external thread The outer surface of the upper part of the screw rod near the screw head is provided with an elastic ring. The invention solves the problems of inconvenient use of ordinary screws, wear of the groove after repeated use, and easy falling off, which causes the screw to rust and harm the human body.

In various electrohydrodynamic (EHD) fluid mover designs disclosed herein, electric field strength may be locally reduced in peripheral regions of an emitter-to-collector electrode gap. As a result, detrimental accumulations of silica, dust and other airborne contaminants can be reduced on surfaces in such peripheral regions, which may otherwise be susceptible to accumulations and/or difficult to clean or condition. In some cases, localized reduction in electric field near sidewall surfaces can provide desirable localized reductions in susceptibility to contaminant related spark or shunting current paths. In some cases, such as when a field blunting structure is employed and (as a result) a generally more uniform electric field pattern is provided locally, an engineered or purposeful local reduction both electric field strength and ion generation in peripheral regions of an emitter-to-collector electrode gap may be quite desirable.

A sanding and smoothing apparatus for pool cue shafts comprises an elongate resilient main body having generally concentrically disposed resilient radially-inner and radially-outer C-shaped members. The apparatus is sized for mating engagement with the tapered shaft of a pool cue received in close fitting conforming relation with the inner surface of the radially-inner C-shaped member. The inner surface of the radially-inner C-shaped member is provided with a suitable abrasive sanding material, which may comprise a sanding sheet or an abrasive coating.

The invention relates to the field of conveying structures for glass processing, and discloses a conveying mechanism for building glass processing. The conveying mechanism for building glass processing comprises multiple conveying rollers, a reset mechanism, an airflow power mechanism and a pushing mechanism, wherein the reset mechanism comprises slide reset pieces arranged on the outer sides of the end parts of the conveying rollers in a swinging way; the airflow power mechanism comprises an air inlet pipe and an air guiding pipe located between the conveying rollers and the slide reset pieces; a pipe port at one end of the air guiding pipe directly faces a pipe port at one end of the air inlet pipe; the pushing mechanism comprises a sliding barrel fixedly arranged above the conveying rollers; a sliding shaft is arranged in the sliding barrel in a penetrating way and is connected with a reset spring; a pipe port at one end, far away from the air inlet pipe, of the air guiding pipe directly faces the upper end of the sliding shaft and is located on the axial direction of the sliding shaft; pendulum shafts are hinged to the lower end of the sliding shaft; a torsional spring is connected between the pendulum shafts and the sliding shaft; and one ends, far away from the sliding shaft, of the pendulum shafts penetrate through the gap between the air inlet pipe and the air guiding pipe and are abutted against the slide reset pieces so as to enable the slide reset pieces to deviate. The conveying mechanism for building glass processing provided by the invention can solve the problem that glass is easy to deviate and slide during the conveying process.

The invention relates to a screwless hinge which comprises a single-tooth connecting piece, a double-tooth connecting piece and a sleeve pipe. The double-tooth connecting piece and the a single-toothconnecting piece are connected through the sleeve pipe; the sleeve pipe and a single tooth are in interference fit; and an opening is formed in the double-tooth connecting piece. According to the screwless hinge provided by the invention, a rotation effect of an existing hinge is improved, a certain friction force can be always kept after wear in the hinge rotation process, and the hinge is prevented from sliding.

A clamping unit, particularly for an injection molding machine, includes at least one moving platen which is moveably arranged on a frame element. At least one hydrostatic support is provided in an area between the platen and the frame element for facilitating back and forth displacement of the moving platen to thereby avoid speed-dependent friction values. Operation of the clamping unit is realized by building up pressure in a hydrostatic support before the moving platen is initiated for displacement so that the moving plate is slightly raises platen in relation to the frame element. After displacement of the moving platen, the pressure in the hydrostatic support is decreased again.

The invention discloses a pre-adjusting method of a new energy automobile charging pile wire automatic winding device. The new energy automobile charging pile wire automatic winding device comprises awire winding outer barrel for spirally winding or unwinding a charging wire, an automatic wiring device for limiting the charging wire to be distributed on the winding outer barrel along a spiral track, an automatic wire clamping device for clamping and fixing the charging wire wound on the wire winding outer barrel, and a pre-adjusting device. The pre-adjusting method comprises the steps that: the part, exposed out of the upper portion of a machine head shell body, of a driving screw is rotated; the driving screw rotates to drive a square nut to move along a direction longitudinal hole; themovement of the square nut causes the compression amount of a range adjusting pressure spring in a normal state; and an elastic force of the range adjusting pressure spring applied to a range adjusting longitudinal rod and extrusion stress of the range adjusting longitudinal rod applied to the right side of the inclined end surface are adjusted, the tight contact between an adjusting disc and theleft end of a swing block assembly is ensured, and certain pressing force and friction force are kept.