343 results about "Sharp tooth" patented technology

This invention is related to a dual-functional medium shredding machine structure, specifically designed for shredding or destroying paper printed with data to be destroyed, optical discs containing data to be destroyed, or expired credit cards. This invention mainly implements a pair of shredding roller blades with sharp teeth as shredding means, and is characterized by providing separate feeding inports, including a paper inport for feeding paper in an inclined orientation, and a disc inport for feeding discs in a vertical orientation, wherein the inports are each led to the same shredding roller blades such that, regardless of the type of substance being fed by the user, the paper or the discs can both be shredded by the shredding roller blades, and the shredded scraps are dispensed to separate collectors through an identical exit by means of an auto-revolving switch plate; and a touch switch at each of the inports such that, while feeding the paper or the discs, the touch switch activates the shredding roller blades to perform shredding task, and drives the switch plate so as to dispense shredded scraps of different substance into different collectors.

An interbody spinal implant having at least three distinct surfaces including (1) at least one integration surface having a roughened surface topography including macro features, micro features, and nano features, without sharp teeth that risk damage to bone structures; (2) at least one graft contact surface having a coarse surface topography including micro features and nano features; and (3) at least one soft tissue surface having a substantially smooth surface including nano features. Also disclosed are processes of fabricating the different surface topographies, which may include separate macro processing, micro processing, and nano processing steps.

An interbody spinal implant, such as a solid-body or composite implant. The implant has at least one integration surface with a roughened surface topography including a repeating pattern, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction generated when the implant is placed between two vertebral endplates and to inhibit migration of the implant. The repeating pattern is formed of at least three at least partially overlapping repeating patterns. The repeating patterns may radiate at a fixed distance from at least one point and may include recesses having a slope of thirty degrees or less relative to the integration surface. Also disclosed are processes of fabricating the integration surfaces.

A composite interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, and opposing anterior and posterior portions; a first integration plate affixed to the top surface of the body; and an optional second integration plate affixed to the bottom surface of the body. At least a portion of the first integration plate, optional second integration plate, or both has a roughened surface topography including macro features, micro features, and nano features, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction, inhibit migration of the implant, and promote bone growth. Also disclosed are processes of fabricating a roughened surface topography, which may include separate and sequential macro processing, micro processing, and nano processing steps.

A packer tool having simple and reliable setting and release systems comprising three or more slips evenly distributed around a mandrel. Each slip comprises two members with gripping teeth which, except for one slip, typically have the capacity to grip a well casing in opposite axial directions. The remaining slip has only one member with teeth able to grip the casing, the other slip member has dummy teeth with nil gripping capacity. The latter teeth have blunt or rounded edges and are not slanted in a selective gripping direction as the sharper teeth of the other slip members.

A clamping device for providing high twisting forces and low damage to a screw device comprises a handle; a driving portion formed with a space; the space including at least two resisting portions and at least two adhesion portions; the resisting portions and adhesion portions being alternatively arranged; each of the connection of the resisting portion and the adhesion portion being formed with a recess for receiving apexes of a screw means so as to prevent the screw means from damage; and each resisting portion having two cambered protrusions at two ends and one sharp tooth between the two cambered protrusions; the apexes of cambered protrusions and the sharp tooth being collinear. Furthermore, the driving portion can be used to a sleeve so that sleeve has the same function of the driving portion. Thereby it is preferred that there are three resisting portions and three adhesion portions.

The invention relates to a making method for cutting sawteeth of a dual metal saw. The making method comprises the following steps of: performing laser cutting or punching or linear cutting forming on a dual metal composite steel band serving as a saw raw material according to the tooth shape; quenching and tempering the cut saw so as to enhance the hardness of a tooth part; grinding and milling a front corner and a rear corner of the thermally processed sawtooth-shaped tooth part so as to form sharp tooth tips; and dividing the teeth. By adopting laser cutting to form the sawtooth, the making method improves the production efficiency, reduces the machining cost and simultaneously solves the problem of overheating of the quenched tooth tips caused by burrs on the tooth tips; furthermore, as the tooth part is separately milled to form the sharp tooth tips, the saw in the use has no run-in period, thereby improving the cutting efficiency of the dual metal saw and prolonging the service lifetime of the dual metal saw.

A separate connection device (40) intended to be inserted between a metal frame (3), of an electrical component (1), and a metal supporting structure (20) in order to connect, electrically and separately, the frame to the supporting structure. The connection device (40) comprises a metal blade manufactured from spring steel which comprises two self-connecting end areas (45, 46) arranged in separate planes and comprising a set of sharp teeth (47) arranged in order to be embedded within the metal material and formed on a folded section of the metal blade so that the sets of teeth (37,47) extend in opposite directions and in planes intended to intersect the planes of the frame (3) and of the supporting structure (20) when the connection device is mounted.

A furrowing and deep-fertilizing machine for orchards comprises a rack and a hand grab, wherein a diesel engine and a gearbox in transmission connection with the diesel engine are mounted on the rack, a travelling wheel is mounted at the front end of the rack, a ground breaking shovel is mounted behind the travelling wheel, a row of sharp tooth-shaped structures are arranged at the bottom end of the ground breaking shovel, and the top end of the ground breaking shovel is fixed at the bottom of the rack; a furrowing device is mounted behind the ground breaking shovel and comprises a fixed bracket fixed at the bottom of the rack and a rotating base rotationally connected to the bottom of the fixed bracket, and rotary tiller blades for furrowing are fixed on the rotating base at intervals; a fertilizing device is mounted on the rack behind the furrowing device, a baffle plate is mounted between the fertilizing device and the furrowing device and fixed at the bottom of the rack, a covering shovel is mounted behind the fertilizing device and is mounted at the rear end of the rack through a covering shovel handle, a ground wheel is fixed on the covering shovel handle, and the covering shovel handle can be moved up and down to control the furrowing depth.

The interverterbral fusion implement for cervical vertebra anterior operation is one hollow column with polygonal or circular cross section, holes on side wall and sharp teeth on the upper and the lower surfaces. It is made of polymer material capable of being absorbed by human body, poly(DL-lactic acid), poly(L-lactic acid), polyglycolic acid or their copolymer. It has determined early-stage locking effect, late-stage bone fusion effect, good biocompatibility and proper mechanical structure, and may be self-degraded after being fused with vertebra. It results in no rejection and may be also used in thoracic vertebra and lumbar vertebra operation.

The invention discloses a sugarcane peeling and section cutting device, and belongs to the field of agricultural product processing. The sugarcane peeling and section cutting device is composed of a support, a device rack, a first sugarcane stop rod, a sharp tooth gear, a first baffle spring, a first baffle, first cutting-off tool springs, a second baffle, a first cutting-off tool, a second sugarcane stop rod, peeling tools, a second cutting-off tool, a storage bag supporting rod, a storage bag stop block, a second baffle spring, second cutting-off tool springs, peeling tool springs and a stepping motor. The sugarcane peeling and section cutting device is high in automation degree, the labor intensity is relieved, and the sugarcane peeling efficiency is improved; the integral design of thestructure is reasonable, the peeling and section cutting work of the whole sugarcane can be finished through one-time operation, the whole operation process is clean and sanitary, and direct usage cannot be influenced for eaters. According to the purpose of cooperation of the unique design of the first baffle and the second baffle and usage of tension springs, the sugarcane is downwards closely attached to a sugarcane positioning clamping arc step, the sharp tooth gear rotates and drives the non-peeled sugarcane to move inwards, and the attaching force is increased.

The invention discloses an impurity-removing carding device for a rotor spinning machine. The device comprises a shell and a carding roller, the shell is provided with a fiber transporting channel, a feeding channel and an impurity removing channel, the impurity removing channel comprises an impurity inlet and an impurity outlet, the impurity removing channel is internally provided with a spreader plate making the impurity removing channel divided into an air current channel and an impurity air current channel, on end of the spreader plate is located at the impurity inlet, the impurity inlet is divided into an air current channel outlet and an impurity air current channel inlet, the other end of the spreader plate is located at the impurity outlet, and the impurity outlet is divided into an air current channel inlet and an impurity air current channel outlet; card clothing is laid on the surface of the spreader plate, and the card clothing comprises sharp teeth arranged in the direction facing the impurity outlet. The size of the air flow channel is adjusted, so that the size of an air current is controlled, and the phenomenon that impurities low in density are brought back into a carding cavity by an air replenishment air current is prevented; in this way, the carding effect is improved, and the phenomenon that the quality of yarn spun through the next few steps is lowered is prevented.

In a fastening method of press-fitting and fixing an axial end section of a second-stage pinion (1) into a circular opening (21) of a first-stage planetary carrier (2), at first press-fitting external teeth (13a), which have an addendum circle larger than an addendum circle of the other pinion part and has a sharp tooth top, are generated through manufacturing of tooth-cutting at an outer circumferential section of the axial end portion of the second-stage pinion (1). Then, a press-fit bore (22) that has a smaller diameter than the addendum circle of the press-fitting external teeth (13a), is formed at the circular opening (21) of the first-stage planetary carrier (2). The press-fitting external teeth (13a) are then press-fitted into the press-fit bore (22) so that tooth tops thereof cut into an inner circumference surface of the press-fit bore (22) to secure fastening strength between the second-stage pinion (1) and the first-stage planetary carrier (2).

The invention provides a rough milling cutter for the rotor and the wheel groove of a steam turbine and a manufacturing technology of the rough milling cutter. The milling cutter comprises blade parts adopting an integral structure and a shank part, wherein a plurality of cutting edges arranged along spiral lines are uniformly distributed on the blade parts in the circumferential direction; the blade parts are axially and hierarchically arranged at three stages along the milling cutter; cutting edges comprise main blades and auxiliary blades, which are distributed in a staggered manner; the main blades are whole blades penetrating through a first-stage part and a second-stage part, and adopt the structure of a postwave blade with sharp teeth, which are used for opening chip-separation grooves; the first-stage part of the auxiliary blades is a boss, the height of which is lower than that of the first-stage part of the main blades; the second-stage part of the auxiliary blades adopts the structure of a clearance angle with sharp teeth, which are not used for opening chip-separation grooves; the third-stage part of the blade parts is a coping part. The rough milling cutter has the advantages that the defects that the removing amount of metal is large, the cutting stroke is long, and the tipping is easy to occur in positions with major diameters are overcome, the security and reliability of the cutter are enhanced, so that the milling cutter has a stable machining process, high efficiency and excellent anti-tipping performance, and is suitable for roughly opening various V-shaped grooves, the repeated utilization rate of the cutter is high, the cutter can be reused through coping for 3 to 5 times, and the cost of cutter is reduced.

A clamping device for providing high twisting forces and low damage to a screw device comprises a handle; a driving portion formed with a space; the space including at least two resisting portions and at least two adhesion portions; the resisting portions and adhesion portions being alternatively arranged; each of the connection of the resisting portion and the adhesion portion being formed with a recess for receiving apexes of a screw means so as to prevent the screw means from damage; and each resisting portion having two cambered protrusions at two ends and three sharp teeth between the two cambered protrusions; the apexes of cambered protrusions and sharp teeth being collinear. Furthermore, the driving portion of the present invention can be used to a sleeve so that sleeve has the same function of the driving portion. Thereby it is preferred that there are three resisting portions and three adhesion portions.

A lock bolt component consists of bolt and gasket sheathed on periphery of bolt screw. It features that sharp tooth to lock with bearing surface of connected piece is set on front side of gasket and positioning element to lock with slot nut external peripheral wall of bolt is set on back side gasket periphery.

The invention belongs to the technical field of batteries, and especially relates to a probe. The probe comprises a probe base, a first spring, a current probe rod, a voltage probe, a second spring, a current probe, an expansion head, and a probe end cover. The first spring and the probe seat are sequentially disposed on the current probe rod in a sleeving manner. The current probe rod is provided with a hollow cavity. One end of the voltage probe passes through the hollow cavity to extend out of the current probe rod. An end part of the current probe rod is provided with an accommodation part, and the accommodation part comprises an accommodation part body, an accommodation hole, and an accommodation groove, wherein the accommodation hole and the accommodation groove are disposed on the accommodation part body. The second spring is disposed in the accommodation hole, and the current probe and the expansion head are cooperatively connected, and are inserted into the second spring. The other ends of the current probe and the voltage probe are respectively provided with a sharp tooth part. The probe cover covers the accommodation groove. The arrangement of the above structure enables the probe to solve a problem of the connection of an electrode lug and a power supply during the formation and capacity grading of large-capacity power batteries.