1372results about How to "Improve locking effect" patented technology

A polyaxial orthopedic device for use with rod implant apparatus includes a screw having a curvate head, a two-piece interlocking coupling element which mounts about the curvate head, and a rod receiving cylindrical body member having a tapered socket into which both the screw and the interlocking coupling element are securely nested. The interlocking coupling element includes a socket portion which is slotted and tapered so that when it is radially compressed by being driven downwardly into the tapered socket in the cylindrical body it crush locks to the screw. The securing of the rod in the body member provides the necessary downward force onto the socket portion through a contact force on the top of the cap portion. Prior to the rod being inserted, therefore, the screw head remains polyaxially free with respect to the coupling element and the body. In a preferred embodiment, the cap portion and the socket portion are formed and coupled in such a way that when the cap portion is compressed toward the socket portion, there is an additional inward radial force applied by the cap portion to the socket portion, thereby enhancing the total locking force onto the head of the screw.

Apparatus and methods for positioning and securing anchors are disclosed herein. The anchors are adapted to be delivered and implanted into or upon tissue, particularly tissue within the gastrointestinal system of a patient. The anchor is adapted to slide uni-directionally over suture such that a tissue plication may be cinched between anchors. A locking mechanism either within the anchor itself of positioned proximally of the anchor may allow for the uni-directional translation while enabling the anchor to be locked onto the suture if the anchor is pulled, pushed, or otherwise urged in the opposite direction along the suture. This uni-directional anchor locking mechanism facilitates the cinching of the tissue plication between the anchors and it may be utilized in one or several anchors in cinching a tissue fold.

Apparatus and methods for positioning and securing anchors are disclosed herein. The anchors are adapted to be delivered and implanted into or upon tissue, particularly tissue within the gastrointestinal system of a patient. The anchor is adapted to slide uni-directionally over suture such that a tissue plication may be cinched between anchors. A locking mechanism either within the anchor itself of positioned proximally of the anchor may allow for the uni-directional translation while enabling the anchor to be locked onto the suture if the anchor is pulled, pushed, or otherwise urged in the opposite direction along the suture. This uni-directional anchor locking mechanism facilitates the cinching of the tissue plication between the anchors and it may be utilized in one or several anchors in cinching a tissue fold.

A modular prosthesis for replacement of a joint articulating surface of a bone, where the modular prosthesis generally comprises a head with a recessed socket, an elongate stem, and a connecting member including a patrix member having a generally spherical surface and adapted to be attached to an end of the stem and to be received in the head, and a locking member adapted to lock the head to the stem in a desired orientation; a system for use in surgical repair of a joint including a selection of components for assembling the modular implant prosthesis, a selection of components for assembling a trial prosthesis, and a transfer device for arranging the components of the implant prosthesis in the same orientation as the components of the trial prosthesis; and methods of using the modular prosthesis and system of the invention.

The invention relates to the field of aero-engine component test part pipeline structure design, in particular to a pipeline joint locking device to at least solve the problem of an existing locking device that a pipeline joint is hard to mount and dismount. The pipeline joint comprises a gland nut and a hexagonal conical port. The pipeline joint locking device comprises a first stop ring and a second stop ring which are arranged in a horizontally symmetrical mode and detachably connected, a first damping gasket and a second damping gasket which are arranged in a horizontally symmetrical mode, and stop fins, wherein the gland nut is fastened by the stop rings through the damping gaskets, and the stop fins are used for fixing the relative positions of the first stop ring, the second stop ring and the conical port. According to the locking device, the connected gland nut and hexagonal conical port are tightly pressed by means of the stop rings and the damping gaskets matched with the stop rings, so that sealing and fixing effects are better; the first stop ring and the second stop ring are detachably connected to facilitate assembly and disassembly and can be repeatedly used.

The invention provides a pressure cooker and relates to the technical field of household electrical appliances. According to the mainly-adopted technical scheme, the pressure cooker comprises a pot cover and a pot body, wherein the pot cover comprises a pot cover body and fixing parts; the pot cover body is connected with the fixing parts in a rotating mode so that the pot cover body can rotate relative to the fixing parts; the pot body is provided with a lock catch structure, wherein when the pressure cooker is in an uncovered state, the fixing parts are locked on the lock catch structure in a detachable way. The invention mainly aims at providing the pressure cooker, wherein the pot cover is detachably connected with the pot body, and the stability of the rotation of the pot cover is improved during the process when the pot cover is opened and closed; and the phenomenon of stagnation caused by too large an angle of the opened pot cover is prevented.

A semiconductor package includes a flip chip mounted on a plurality of leads and encapsulated by a molding compound. The upper surfaces of the leads includes a plurality of bump-bonding regions at the fan-in ends of the leads, and the lower surfaces of the leads include a plurality of outer connecting regions at the fan-out ends of the leads. A plurality of indentations are formed at the upper surfaces of the leads and adjacent to the corresponding bump-bonding regions so as to avoid solder contamination on the leads. After molding, the indentations are filled with the molding compound. Preferably, the indentations have a reversed “Ω”-shaped profile to prevent bumps of the flip chip from excessively wetting over the other portions of the leads to firmly fix the fan-in ends of the leads.

A method for fabricating leadless packages with mold locking characteristics is disclosed. A provided leadless leadframe has a plurality of units in a matrix, each unit includes an improved die pad with a plurality of indentations, such as semi-vias in the sidewall thereof and a plurality of leads around the die pad. After chip attachment and electrical connection, a plurality of package bodies for semiconductor packages are individually formed on the corresponding units and covered the indentations in order to enhance the horizontal mold locking capability of the die pad. Using punching, connecting bars of the leadless leadframe are removed to isolate the leadless packages.

The invention relates to a mechanism for quickly exchanging a power battery of an electric automobile. The mechanism is characterized in that: a power battery pack (1) of the electric automobile can be exchanged. A quickly-exchangeable battery structure is adopted, so that the battery of the whole automobile is easy to exchange. When the battery is low, the electric automobile quickly exchanges another set of battery by running to a battery exchange station and can drive continuously, so the driving requirement can be met completely. The invention also discloses a method for exchanging the power battery of the electric automobile.

A leadless leadframe with an improved die pad for mold locking includes a die pad and a plurality of leads. The leads are arranged around the die pad. A plurality of indentations, such as side semi-vias, are formed on the sidewall of the die pad for filling a package body of the semiconductor package so as to enhance the horizontal mold locking capability of the die pad.

The invention belongs to a machining process device of an aerospace product, and in particular discloses a positioning support device used for stirring, rubbing and welding a circular seam of a flange disc of a top cover of a storage box. The machining process device comprises a positioning supporting rotary support, wherein a circular base plate is arranged above the positioning supporting rotary support; an outer pressing ring is arranged above the circular base plate; round holes coaxial with a central hole at the lower bottom surface of the positioning supporting rotary support are arranged in the circular base plate and a center of the outer pressing ring; a central shaft is arranged inside the hole; the lower end of the central shaft is fixed on the positioning supporting rotary support; an outer clamping ring is arranged on the circular base plate; the outer clamping ring is connected with the outer pressing ring through a fastening structure; and a lock wire nut is arranged at the top end of the central shaft. The outer clamping ring, the outer pressing ring and the unique fastening structure have a positioning clamping function to a whole welding product; the outer clamping ring and the central shaft are concentric so as to have a function of positioning a rotation center; a design of the fastening structure has a transition function to connection of a whole positioning support device in a mode that bearing outer pressure is converted into a clamping force, and thus the machining process device is applicable to requirements on high precision in welding and assembling.

The invention provides a steel pipe inner and outer wall cleaning machine, and belongs to the technical field of building materials. The steel pipe inner and outer wall cleaning machine comprises a cleaning machine base, a feeding and conveying component, an outer wall cleaning component, a centering and guiding component, a discharging and conveying component and an inner wall cleaning component.The feeding and conveying component, the outer wall cleaning component, the centering and guiding component, the discharging and conveying component and the inner wall cleaning component are all arranged on the cleaning machine base and are arranged from left to right in sequence. According to the steel pipe inner and outer wall cleaning machine, the outer wall of a steel pipe is firstly cleaned,then the inner wall of the steel pipe is cleaned with the cleaned outer wall of the steel pipe as the standard, the cleaning effect of the inner wall of the steel pipe is especially good, and use ofa subsequent formed pipeline is convenient; and dust, rust blocks and other impurities on the inner wall and the outer wall of the steel pipe are effectively removed in a physical manner, and liquid in the subsequent formed pipeline cannot be contaminated.

The invention discloses a single-component thread locking epoxy precoated adhesive which is characterized by being prepared from the following components in proportion by weight: 40-70 parts of epoxyresin, 10-80 parts of activated thinner, 20-60 parts of epoxy hardener, 8-20 parts of urea, 30-60 parts of formaldehyde solution, 10-30 parts of hydroxyphenol, 0.5-5 parts of stuffing, 5-15 parts of surfactant, 80-200 parts of distilled water, 0.5-2 parts of membrane material, 0.1-1 part of hydrolysis inhibitor and 5-10 parts of solvent; and a preparation method comprises the steps: firstly, respectively microencapsulating the epoxy resin and the epoxy hardener are and then uniformly mixing with other components in proportion. The single-component thread locking epoxy precoated adhesive has the characteristics of convenient construction, applicable workpiece material diversification, less curing condition restriction, good moisture resistance and high destabilizing moment and average disassembly moment, ensures the locking performance and better guarantees the safe reliability of products.