30results about How to "Reduce friction load" patented technology

A fiber placement system including positioner and a fiber delivery apparatus having a creel assembly and a fiber placement head is provided. The positioner moves the entire fiber delivery apparatus including the creel assembly and the fiber placement head via at least three linear degrees of freedom. The fiber delivery apparatus includes an articulating wrist for moving the fiber placement head relative to the creel assembly. The fiber placement apparatus is substantially free of linear degrees of freedom within the fiber tow paths between the spools and the fiber placement head. One or more rotational degrees of freedom may be provided along the tow path. In one embodiment, the interface between the fiber delivery apparatus and the positioner is laterally offset such that a portion of the creel axially overlaps with vertical ram of the positioner.

A fastener driving tool includes a power source including a cylinder, a piston with a driver blade reciprocating in the cylinder, a tool nose associated with the power source for receiving the driver blade for driving fasteners fed into the nose, and a magazine housing a supply of the fasteners. A magazine feeder mechanism is associated with the magazine for sequentially feeding fasteners into the nose, and the feeder mechanism includes a reciprocating feed piston. A conduit is connected between a port in the cylinder and the feed mechanism for diverting combusted gas for activating the feed piston. The port is disposed in the cylinder a specified distance below a piston prefiring position, and the distance is reflective of a delay of feeding the gas to the feed piston at least until engagement between an end of the driver blade and a head of a fastener in the tool nose.

A fastener driving tool including a power source having a reciprocating driver blade, a tool nose associated with the power source for receiving the driver blade for driving fasteners fed into the nose, a magazine constructed and arranged to house a supply of the fasteners and a magazine feeder mechanism associated with the magazine for sequentially feeding fasteners into the nose. The feeder mechanism operates between a retracted position and an advanced position. An electromechanical retention device is operationally associated with the feeder mechanism and is configured for retaining the feeder mechanism in the retracted position until the driver blade is positioned to allow fastener advancement into the nose.

A steering column assembly includes a column jacket having a jacket portion and a compression bracket attached thereto. The compression bracket includes a planar wall spaced from the column portion and a sidewall extending between the planar wall and the jacket portion. The sidewall defines a telescope slot extending along a longitudinal axis. A shaft extends through the telescope slot of the sidewall. A roller is supported on and rotatable about the shaft, and in rolling engagement with the planar wall. The roller positions the shaft within the telescope slot to prevent sliding frictional engagement between the shaft and the sidewall. The rolling coefficient of friction between the roller and the planar wall is less than the sliding coefficient of friction between the shaft and the sidewall to reduce a frictional load produced during longitudinal collapse of the steering column assembly.

When an engagement-side clutch taking charge of rotation control in an upshift is the same as a rotation control clutch of a previous gear shift, it is determined that there is a likelihood that a thermal load of a clutch friction material will increase, and the thermal load of the clutch friction material is decreased by delaying gear shift start. By setting a delay time by which the gear shift start is delayed when an accelerator depression amount is small to be shorter than when the accelerator depression amount is large depending on the accelerator depression amount, a gear shift which is an upshift can be performed without unnecessary waiting.

A method is provided for maintaining the aggregate stiffness of a pivot bearing assembly generally employed along with an actuator assembly of a magnetic disk drive, while increasing the stiffness in a predetermined direction. More specifically, bearing cartridges used in conjunction with actuator assemblies of the prior art employ at least one ball bearing assembly positioned about a stationary shaft. A modification is presented herein that generally concerns repositioning and maintaining the balls of the ball bearing along a predetermined axis for efficient reaction of loads.

An image forming apparatus provided by the present invention includes a plurality of image carrying members, an intermediate transfer belt, a plurality of rollers, and a correcting mechanism. The intermediate transfer belt is endless and, to it, toner images formed on the image carrying members respectively are transferred by being sequentially superposed on each other. The correction mechanism includes a slanted bearing, which rotatably supports a tension roller, and a main body guide roller which makes contact with the slanted bearing when it moves as a result of the intermediate transfer belt meandering and moves the slanted bearing along with one end of the tension roller in the axial direction in the direction perpendicular to the axial direction to correct meandering of the intermediate transfer belt with respect to the tension roller. The main body guide roller is a rotary member which rotates while in contact with the slanted bearing.

A portable belay anchor system is disclosed that provides a coupling location for safety rope attached to a climber, such as a roof inspector. The portable belay anchor system includes a base having a mast coupled thereto. The mast has a shaft portion and a flange portion. A plurality of removable weights are positioned on the shaft, coupled to the flange portion. The flange portion supports the weights so that the weight is carried by the shaft itself. A retaining member is coupled to the mast to hold the weights on the mast. A shackle is also coupled to the mast. A rope is coupled to the shackle to act a the belay rope which the user positions through a belay brake device.

The invention relates to a lubricating oil additive containing ultrafine rare-earth powder. The additive consists of the following components in percentage by mass: natural serpentine mineral powder, ultrafine rare-earth powder, surfactant, a dispersing agent, a friction modifier, an auxiliary and base oil, wherein the ultrafine rare-earth powder is one of cerium hydroxide, neodymium oxide and cerium fluoride; the surfactant is borate, span-60 or oleic acid; the dispersing agent is either polyisobutene dibutyl succinimide or high molecular weight polyisobutene dibutyl succinimide; the friction modifier is one of melamine cyanurate, boron nitride and calciuym nitride; the auxiliary comprises 72% of dialkyl disulfo oxygen molybdenum phosphate sulfide, 18% of polymethyl tetradecyl acrylate and 10% of a vinyl-propylene copolymer; and the base oil is 500SN base oil. The additive has obvious corrosion resistance; and after an engine is treated technically by using the self-repairing additive, the dry friction coefficient of the machine is reduced from original 0.05 to be less than 0.005 and therefore the surface abrasion is reduced.

The invention provides a low-force high-efficiency simulated lunar rock drilling core bit, which comprises a hollow cylindrical drill body. The end of the drill body is provided with an ellipsoidal head. A coring channel is formed between the inner surface of the drill body and the barrier ring. The outer surface of the drill body is provided with a spiral wing. The surface of the ellipsoidal head is processed with an ellipsoidal spiral wing for chip removal. It is set on the same helical line as the helical wing, and two groups of sharp-edged cutting tools are uniformly arranged on the circumferential direction of the ellipsoidal head, which are respectively the inner sharp-angle cutting tool group and the outer sharp-angle cutting tool group. The inner sharp-angle cutting tool group includes multiple The inner sharp cutting tool and the outer sharp cutting tool group include a plurality of outer sharp cutting tools, the number of the inner sharp cutting tool is equal to the head number of the ellipsoidal spiral wing, and the number of the outer sharp cutting tool is equal to the number of heads of the screw wing. The numbers are equal. The invention can obtain better debris removal effect and higher core extraction rate in the surface drilling test of molded lunar soil.

The invention discloses a flow distributing device, a heavy oil viscosity decreasing exploitation system and an extraction method thereof. The flow distributing device comprises a hollow body and a sliding sealing block. The hollow part is a through hole, and the upper end and the lower end of the through hole are used for being connected with oil pipes. A first opening and a second opening are formed in the side wall of the body in the axial direction. A first check valve communicated with the first opening is arranged on the first opening, and a second check valve communicated with the second opening is arranged on the second opening. The sliding sealing block is arranged in the hollow part of the body in a sealed mode, can be fixed to a pumping rod, and can move axially along with the pumping rod. The heavy oil viscosity decreasing exploitation system with the flow distributing device and the extraction method thereof can effectively extract heavy oil.

A power transmission device provided by the present invention can establish a combination state smoothly between a first fastening part of a driving gear and a second fastening part of a driven gear by a simple structure. In the power transmission device, a plurality of cam grooves (91,93) are formed on a variable speed drum (84), a sliding part (109) having an abutting surface (114) which abuts against a clutch shell (56) is in snap joint with a clutch hub (57), and an arm part (116) for driving the sliding part (109) is configured, is connected with the cam groove (93) and drives the slidingpart 109 along with the action of the variable speed drum (84), thereby enabling the sliding part 109 to abut against the clutch shell (56).

The invention discloses a micro-jetting adhesive dispensing driving device. The device comprises an upper driving unit 1, a lower driving unit 2, a swinging unit 3 and an output unit 4; the two driving units are symmetrically arranged on two sides of the swinging unit; each driving unit adopts the flexible structure comprising a plurality of flexible hinges and rod pieces, and leftward-and-rightward micro-amplitude swinging of the rod pieces connected with the swinging unit is realized through elastic deformation of the flexible hinges; the swinging unit comprises a flexible hinge and a T-shaped rod, leftward-and-rightward swinging of the driving units is transferred to the swinging unit through elastic deformation of the flexible hinge, and up-and-down micro-amplitude swinging of the swinging unit is realized; the output unit comprises two symmetrically-arranged arc-shaped flexible beams and a striker fixing rod, up-and-down swinging of the swinging unit is transferred to the output unit through elastic deformation of the arc-shaped flexible beams, up-and-down micro-amplitude swinging of the rod pieces for mounting strikers is realized, and the micro-jetting function is realized.The designed micro-jetting adhesive dispensing driving device can be used in the fields of bioengineering, rapid manufacturing, electronic packaging and the like.