914 results about "Serration" patented technology

A spinal fixation system includes a plurality of anchor screw assemblies, e.g. including anchor screws and clamp assemblies defining rod passages therethrough. A rod is receivable in the rod passages between the anchor screw assemblies, and a spacer is securable on the rod. The rod is preferably serrated over less than about 25% of the peripheral surface thereof, and the clamp assemblies preferably include engagement surfaces that include similarly spaced and oriented serrations. During use, a first anchor screw is screwed into a first vertebra, and a second anchor screw is screwed into a second vertebra adjacent the first vertebra, and clamp assemblies are mounted to each anchor screw. A rod is secured between the anchor screw assemblies, thereby fixing a relative spacing of the first and second vertebrae. A spacer may be crimped onto the exposed portion of the rod between the anchor screw assemblies, the spacer extending between the anchor screw assemblies to prevent the anchor screw assemblies, and, consequently, the first and second vertebrae, from moving towards one another.

A wind generator and turbine blade includes a trailing edge having several serrations, a length of the serrations in each of a plurality of sections of the trailing edge is between approximately 10% and 40% of a mean chord for the corresponding section; and a length to width ratio of each of the serrations is between approximately 1:1 to 4:1.

A method for the improvement of wind turbine rotor efficiency blades of a wind turbine rotor with serrated trailing edges each having a plurality of span-wise, periodic indentations, in the form of saw teeth having approximately 60 degrees included angles between adjacent vertices. The efficiency of an existing wind turbine rotor is improved by the attachment of an apparatus to at least part of the trailing edge of the wind turbine blades, the apparatus being in the form of a serrated panel that is fixed to the surface of the blade and has the serrations extending into the airflow behind the trailing edge of the existing blade. The efficiency of a new wind turbine blade is improved by manufacturing the blade with serrations of at least part of the trailing edge of the wind turbine blade.

A connector adapter that can be used to directly connect a peripheral device to a host device. The connector adapter is adjustable so as to allow selective reorientation of the peripheral with respect to the host device. The connector adapter includes a limiting mechanism that restricts the degree to which the adapter can be selectively rotated. In addition, the adapter includes an indexing mechanism that allows the position of the adapter to be locked in predetermined positions. In one embodiment, the connector adapter is partially formed from a compliant material so that the adapter can bend when submitted to an external force, and thereby resist breakage. The connector adapter may also have a physical geometry that provides additional strain relief, such as a plurality of serrations formed on the outer surface. An extension spring can be positioned within the connector adapter so as to return the adapter to substantially its original shape when the external force is removed.

An axially arranged cable, such as a coaxial, triaxial, twinaxial, or armored cable which includes at least one serration on an insulative or conductive layer internal thereto and methods of manufacturing the same. These serrations may appear on insulators or inner jackets and are in physical contact with conductive layers such as shields which axially surround the insulative layers. The serrations generally increase the contact force between the insulative layers and the conductiver layers to help prevent separation of the cable core during stripping of the axial cable.

Disclosed herein is a prosthetic implant, a tool assembly for positioning the prosthetic implant, and a method of placing a prosthetic implant. The prosthetic implant includes an anterior end and an opposite, smaller, posterior end. Left and right side portions attach the anterior end to the posterior end. Each of the left and right side portions includes serrations on the top and bottom. The serrations on the top are directed substantially opposite the direction of the serrations on the bottom. Adjacent serrations can be separated by a radius. The implant includes tooling apertures for receiving corresponding portions of a tool assembly. The tool assembly includes an inner tool and an outer tool. The inner tool can engage the implant and can seat the outer tool to the implant. The outer tool can be used to exert a rotational force to the implant to rotate the implant to a desired orientation.

A body tissue fixation apparatus includes a plate having oppositely disposed outer and tissue-contacting surfaces, and at least one fixation hole extending between the outer and tissue-contacting surfaces along a longitudinal axis. The fixation hole is defined in part by an inner hole surface having at least one serration. The plate is adapted for affixation to at least one body tissue member. At least one fixation device of the body tissue fixation apparatus has a shank and a head portion, the shank being insertable through the fixation hole in the plate to affix the plate to the body tissue member upon rotation of the head portion. At least one deformable member is connected to the head portion, the deformable member extending laterally in a direction substantially perpendicular to the longitudinal axis and being adapted to deflect to engage with at least one serration formed on the inner hole surface. Engagement between the deformable member and the serration helps to prevent displacement of the fixation device within the fixation hole. A method for using the body tissue fixation apparatus is also described.

A rotor blade assembly for a wind turbine is disclosed. The rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The rotor blade further includes a noise reducer configured on a surface of the rotor blade, the noise reducer comprising a plurality of serrations, each of the plurality of serrations defining a centerline. The centerline of each of the plurality of serrations defines a individual tailored angle dependent on at least one of span-wise location, local chord, width, length, bend angle, and thickness

The invention relates to an easily retrieved biological specimen pouch. The said easily retrieved biological specimen pouch of the invention comprises a flexible wall, an open end and a closed end, and the specimen pouch can receive a biological specimen; A) The flexible wall of the open end of the specimen pouch has discontinuous serration; B) On the said serration, there are slots through which an open and retrieval string or an open spring or a retrieval noose can pass. As the open end of the specimen pouch is provided with a flexible wall of discontinuous serration, and the open and retrieval string or the retrieval noose passes through the slots on the discontinuous serration of the flexible wall of the open end of the specimen pouch, when the open and retrieval string is pulled towards an outer sheath to retrieve the specimen pouch of the invention, the bulk of contracted open end is reduced due to the discontinuous serration of the flexible wall of the open end. It is easy to close the open end of the specimen pouch, and convenient to retrieve the specimen pouch into the outer sheath or extract it through a small incision. The specimen pouch of the invention is simple, convenient, safe and efficient.

A tool coupling includes first and second bodies held together by a clamping mechanism. The first body includes a first surface having a first serration formed therein, a first hole extending through the first surface, and a side surface having a second hole extending therethrough and intersecting the first hole. The second body includes a second surface facing the first surface and including a second serration configured to mesh with the first serration. A drawbar projects from the second surface and extends into the first hole. The drawbar includes a plurality of wedge surfaces. The clamping mechanism includes a screw disposed in the second hole and nuts threadedly mounted thereon for movement toward and away from the drawbar. Each nut includes a plurality of wedge surfaces arranged to engage the wedge surfaces of the drawbar to pull the second body toward the first body in a manner bringing the first and second serrations into meshing engagement with one another.

A system for controlled deployment of a prosthesis, in which a sheath is retracted from a prosthesis in a body vessel or duct. The system includes a handle for deploying the prosthesis, the handle comprises a base member fixed to a catheter, and a slide member for sliding past the base member, the slide member being fixed to an end of a retraction member. The slide member includes a serrated gear rod, and the handle is configured such that, when activated, the gear rod moves in relation to the base member by no more nor less than the length of one serration on the gear rod.

In a saw blade for power tools, in particular for power reciprocating saws, with a blade back (11) and a toothing (12) extending along the lower edge of the blade back and comprising many saw teeth (13) lined up in succession, in order to increase the blade life and service life of the saw blade, especially in a thick, stable embodiment, the saw teeth (13) in successive portions (a, b) of the toothing (12) are embodied with the same tooth width (az, bz), which however differs from that of the saw teeth (13) in the preceding or the succeeding portion (b, a) of the toothing (12).

This invention relates to a tool intended for chip removing machining together with a cutting insert therefor. The cutting insert is formed having a connecting surface or serrations that comrises ridges (11) and intermediate grooves. The flanks (18) which delimit the ridge (11) have a convexly curved surface (28), the contact point of which to a co-operating flank (25) of a co-operating ridge consists of a line (G), which extends axially along the length extension of the flank and is situated in an area approximately halfway between on teh one hand an outer transition (19) between the flank (18) and an apex (17) and on the other hand an inner transition (23) between the flank and a groove bottom. The convexley curved surface extends inwards as well as outwards from said contact line (G), in order to guarantee that practical contact between the flanks of the co-operating ridges is attained via surface contact at an indifferent place between the outer and inner limiting edges (29, 30) of the curved surface.

A supporting device for automotive portable electronic instruments is formed of a bendable elongated rod with both ends connected to a bracket and a base, respectively. The elongated rod includes plural wheel-like connectors rotatable in vertical and axial directions and plural tubular connecting rods arranged between adjacent connectors. Each connector has two wheel-like casings facing and engaging with each other, and the edge of the connecting surface of each casing is correspondingly provided with waved serrations, such that two wheels can be rotatably engaged with each other and positioned by the serrations. Further, a disc-like knob is connected between the elongated rod and the bracket. The bracket is able to rotate around the knob as the center of rotation. A fixing screw is used to force and fix the position of the bracket. Finally, the base is a bent plate provided with plural screw holes, and both ends of the base are connected to the car body and the elongated rod, respectively, thereby to fix the supporting device in the car.

A barrier assembly includes first, second and third bodies that are vertically stacked. Each body includes a top surface and side surfaces. Inlet ports are formed within the top surfaces. Isolated chambers are formed within and are equidistantly spaced from a center of each body. The bodies include opposed ends that have serrations formed therewith that are interfitted for inhibiting lateral movement of the bodies during collision. The bodies also include indentations formed therein for receiving a user's hands or a fork lift arm, and assisting the user to transport the bodies. Reinforcement rods, formed from non-corrosive material, traverse through the bodies. At least one reinforcement rod is medially seated between the isolated compartments for counterbalancing a combined weight of the bodies. A connector rod is conjoined to the bodies such that the bodies are prohibited from disengaging while experiencing an impact force.

A blade or paddle for use with a snowblower impeller formed from a flexible material. The flexible material includes a plurality of layers of reinforcing material to reinforce the blade and provide greater tensile strength. The working edge of the blade includes a plurality or pattern of indentations, serrations or dimples that provide an improved engagement function of the blade or paddle and the surface of the ground.

The present invention relates to a hand held interproximal dental tool for detaching unwanted materials from a patient's teeth and to methods of manufacturing such tools. The interproximal dental tool includes a compact, ergonomically designed housing which is gripped by a dental practitioner during use and a blade extending from and structurally supported by the housing which includes serrations for cutting or abrasive materials for sanding unwanted material.

A utility knife blade comprising a blade body defining a first side, a second side opposite the first side, a back edge and a cutting edge opposite the back edge. The cutting edge includes a plurality of serrated portions and substantially non-serrated portions. The blade further defines two opposing lateral edges extending between the back edge and the cutting edge. A plurality of score lines laterally spaced relative to each other along the cutting edge extend across at least one of the first and second sides of the blade between the cutting edge and the back edge, the score lines defining a plurality of blade segments therebetween. The score lines extend between the non-serrated portions of the cutting edge and the back edge so that the serrated portions avoid contact with the score lines to facilitate the breaking off of each cutting segment when desired.