36results about How to "Reduce pull-out force" patented technology

A pipette has a preferably thermoplastic pipette shaft, for slipping on a likewise preferably thermoplastic pipette tip, has a slip-on section which opens at least slightly conically, and an attachment section which is formed on the lower end of the pipette shaft and onto which the slip-on section of the pipette tip is slipped. A sealing section which is made of an elastically-flexible plastic material which seals well with low withdrawal forces is provided on the attachment section. Furthermore, preferably, a fixing section is formed on the plastic material of the attachment section of the pipette shaft at a location that is axially offset relative to the sealing section. The sealing section of elastic-flexible plastic material is molded directly, retentively, on the preferably thermoplastic material of the pipette shaft.

A hole punch device that reduces the force required to create a hole in papers or other sheet media. A punch element of the hole punch device includes a locally sloped or indented floor to create a bend in the sheet media as it is punched to create an enlarged, oval hole. The punch pin may include an expanding sleeve surround the pin that forms a larger diameter during the cutting stroke and springs back to a smaller diameter during a pull out stroke. A coiled torsion return spring is positioned remotely from and non-coaxially with the punch pin. A keyed pin and support frame arrangement ensures a predetermined rotational orientation of the pin for sequential cutting for reduced cutting force. A long lead-in surface in the frame helps installing sheet media into the feed slot of the punch element.

A cup having an inner cavity, for an articulation organ, and a metallic outer layer and in a portion of a spheroid, the outer layer including networks of meshes with nodes and struts, where the struts are tapered struts each having a tapered shape and being arranged such that the tapered shapes are uniformly oriented.

The invention provides a reverse circulation drilling device for a soft projecting coal seam. The device comprises a drilling machine, an active double-wall drilling rod, a double-channel pneumatic faucet; a power head is arranged on the drilling machine; the active double-wall drilling rod passes through the power head to be mounted; an inner pipe at one end of the active double-wall drilling rod is connected with a rubber pipe through the double-channel pneumatic faucet; a pulverized coal receiving device is connected to the tail end of the rubber pipe; an air box which communicates with internal and external pipe annular channels of the active double-wall drilling rod is arranged on the double-channel pneumatic faucet; the air box is connected with an air compressor through an air pipe; a drill bit is connected to the other end of the active double-wall drilling rod. With the adoption of the device, the disturbance to the coal seam can be minimized, so that the collapse in holes can be effectively prevented, and that the frequent drilling blocking accidents can be avoided; the circumstance that gas is concentrated is prevented, and therefore, the phenomenon of blowout through the holes can be effectively avoided; the production cost is low; in addition, the working environment at the construction field can be effectively improved; the purpose of drilling in collapse and reducing stratums synchronously by one drilling rod can be achieved.

The invention provides an iron-based mixed powder used for powder metallurgy. By improving the flowability of iron-base powder of low alloy steel powder containing Mo and Mn, the forming density of powder can be improved and the extraction force after the powder is formed can be reduced substantially, thereby realizing the improvement of the density and strength of the sintering body and the decrease of the manufacturing cost. The iron-base powder of the iron-based mixed powder used for powder metallurgy adopts water atomizing alloy steel powder containing, by mass, Mo of 0.3 to 1.0 percent, and Mn 0.1 to 0.25 percent, as pre-alloy. The rest is iron and impurities. And Cu powder of 0.5 to 4.0 percents by mass, graphite powder of 0.3 to 1.0 percent by mass and sheet shaped powder of 0.01 to 5.0 percents by mass are added into the iron-based mixed powder. The average grain diameter of a long diameter of the sheet shaped powder is less than 100 micro meters and the thickness is less than 10 micro meters. And the draw ratio is higher than 5.

A clamp (10) has a plate (12) with a harness-mounting part (11) to be fastened to a wire harness. Two spaced-apart stems (14) project from the plate (12). A spanning part (14) connects confronting portions of the stems (15) to form a cavity (18). A vane support (17) projects out from the end of each stem (15) and a vane (16) projects down and out from a tip of each vane support (17). A vehicle body-locking part (16a) formed at a tip of each vane (16). The spanning part (14) twists towards the cavity (18) when the wire harness is pulled in a withdrawal direction from the vehicle body to unlock the vehicle body-locking parts (16a) of the vanes (16) from the locking hole.

A container wall for storing and fermenting materials, comprising a clamping channel, having an undercut near the upper edge that is open for clampingly receiving a rim of at least one plastic foil that covers the container at the top, the clamping channel comprises a narrowed lateral insertion slot with an upper and a lower protrusion, to which the foil can be wrapped around. A lower wall of the clamping channel is wider than the thickness of the clamping rail at the facing longitudinal edge which is formed as a flat profile, the upper wall of the clamping channel is at least twice as wide as the thickness of the clamping rail. The insertion profile can be inserted into the clamping channel through the entry. When the foil that is wrapped around the insertion profile is under tension, the insertion profile is retained in the clamping channel by the protrusions.

A door catch for a sliding door of a motor vehicle includes a holding arm, with the holding arm being secured on a running rail of the sliding door using a holder and being pivotable against a preloaded spring. The catch has a latching member, the latching member being a nose which is arranged on the holding arm, and a counter-latching member, the counter-latching member being a latching cam which is acting transversely to the direction of travel of the sliding door. In the open position of the door, the holding arm latches, through said latching member, with said counter-latching member.

The invention discloses a magnetic absorbing unit for an underwater magnetic absorbing wheel-pedrail climbing robot and relates to a structural design of the magnetic absorbing unit for the magnetic absorbing wheel-pedrail climbing robot. The magnetic absorbing unit comprises a magnetic isolating housing and a yoke, and a first absorbing magnetic block, a second absorbing magnetic block, a first magnetic conductive steel plate, a second magnetic conductive steel plate, a first regulating magnetic block, a second regulating magnetic block, a lower magnetic isolating block and an upper magneticisolating block which are arranged below the yoke respectively form a lower absorbing magnetic circuit and an upper regulating magnetic circuit. The magnetic absorbing unit has simple structure and easy implementation; due to the increase of the regulating magnetic circuit, when the corresponding fixed magnetic absorbing unit is arranged above the pulling-up position of the magnetic absorbing unit, the fixed magnetic absorbing unit and the regulating magnetic circuit attract each other, thereby reducing the pulling-up force and achieving the purposes of reducing the power of a motor and reducing the loads of a flexible crawler. If the fixed absorbing unit is arranged at the tensioning position of the flexible crawler, the fixed absorbing unit can carry out non-contact tensioning on the flexible crawler, thereby solving the contradiction between the tensioning and sealing of the underwater wheel-pedrail magnetic absorbing climbing robot.

The present application relates to a shield (10) for the distal extremity of an administration device (3) comprising a hub (2) on which said shield (10) is to be removably engaged, said shield (10) having a wail (13) the internal face (14) of which defining an interior cavity (15) for receiving the extremity of the administration device (3), at least a portion (14a) of said internal face (14) being intended to be in contact with said hub (2) when said shield (10) is engaged on the extremity of said administration device (3), wherby said portion (14a) has, distributed over a major portion of said portion (14a), a surface feature (16, 17) that defines the amount of contact between said portion (14a) and said hub (2).

The invention discloses an automatic reducing pore-forming device mounted on a drilling machine. The automatic reducing pore-forming device comprises a pile pipe, a guide rod, movable boards and an inverted conical pile tip, the guide rod is movably connected to the lower portion of the pile pipe, the lower end of the guide rod is fixedly connected with the pile tip, 3-6 movable boards are hinged to the edge of the upper end face of the pile tip and arranged side by side, a 5-6cm distance is reserved between every two adjacent movable boards, the movable boards are arc-shaped and are closed and tightly hold the pile pipe when pores are formed, and the diameter a of the upper end face of the pile tip is not larger than the diameter A of the pile pipe. The automatic reducing pore-forming device is simple, convenient to operate, low in lifting resistance and high in pore-forming speed, and labor productivity is greatly improved. The pore-forming process can be widely applied to construction of foundations such as civil and industrial building foundations, railways, roads, bridges and harbors.

The invention provides a permanent magnet adsorption wheel-tracked crawling machine for a welding robot. The crawling machine comprises a vehicle body, wheel-tracked driving systems centrosymmetrically arranged on the two sides of the vehicle body, and auxiliary permanent magnet adsorption units installed at the two sides of the lower portion of the vehicle body, wherein each wheel-tracked drivingsystem comprises a direct current servo motor, a planet gear speed reducer, a worm and gear speed reducer, a driving chain wheel, a driven chain wheel, a chain tensioning device, a permanent magnet adsorption unit and a chain with accessories. The permanent magnet adsorption wheel-tracked crawling machine is simple in structure and easy to realize. By additionally arranging the chain tensioning device, the wheel base is adjusted in a small range as needed; by additionally arranging the auxiliary permanent magnet adsorption units, the vehicle body loading performance is improved, and the vehicle body skid phenomenon is reduced.

The invention provides a hot working pressing and releasing device. The hot working pressing and releasing device comprises a pressing assembly and a pluggable device assembly. The pressing assembly comprises a first pressing rod and a second pressing rod, the first pressing rod is fixedly arranged, and the second pressing rod is arranged in a sliding mode in the length direction of the pressing assembly so as to press and unlock all the effective loads. The pluggable device assembly comprises a pluggable pin, and the pluggable pin is provided with a pair of first inclined faces. The first pressing rod and the second pressing rod are correspondingly provided with clamping grooves, and the clamping grooves are provided with a pair of second slopes matched with the first slopes. When the pressing assembly is in a pressing state, the first pressing rod and the second pressing rod are connected, the inserting and pulling pin is inserted into the clamping groove, and the first inclined face abuts against the second inclined face. During pressing, the pre-tightening force of the pressing and releasing device is transmitted to the connecting inclined plane of the inserting and pulling pin and the pressing rod, component force in the moving direction of the inserting and pulling pin can be generated according to the stress condition, the pulling-out force needed by the inserting and pulling pin is greatly reduced, and therefore the internal explosive loading amount of the hot working inserting and pulling device is reduced, and the impact load generated when the hot working inserting and pulling device is detonated is reduced.

The invention discloses an arc-shaped stamping high current terminal. The arc-shaped stamping high current terminal comprises a male end (1) and a female end (2), wherein the male end (1) comprises amale end front part (11) and a male end rear part (12), the male end front part is a cuboid cylinder, the surface of the cuboid cylinder is an arc-shaped surface; the female end (2) comprises a femaleend front part (21) and a female end rear part (22), the female end front part is a hollow cuboid, the inner wall of the female end front part is provided with a rectangular arc-shaped elastic piece(3), interspace is reserved between the arc-shaped elastic piece and the inner wall of the female end front part, and the female end front part is connected with the female end rear part mutually; andthe male end front part is matched with the arc-shaped elastic piece at the inner wall of the female end front part. The arc-shaped stamping high current terminal has the advantages that the structure is simple, on one hand, the safety and stability can be ensured, on the other hand, the manufacturing cost is far lower than that of an existing design, and the manufacturing efficiency of manufacturers can be greatly improved due to the simple structural design.

A needle cover for protecting a needle mounted on a tip of a barrel of a medical injection device, may include an inner shield, and an outer shield surrounding at least partially the inner shield, and fixed to said inner shield, wherein the needle cover may include an outer shield including a body including a first open end, a second end, and a sidewall extending between the first end and the second end, the body defining a cavity to receive an inner shield therein, a first undercut defined adjacent the first open end of the body.