270results about How to "Reduce recoil" patented technology

The invention relates to an expandable stent comprising circumferentially adjacent modules. The modules comprise longitudinally adjacent slide-and-lock radial elements which permit one-way sliding of the radial elements from a collapsed diameter to an expanded / deployed diameter, but inhibit radial recoil from the expanded diameter.

A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. A sheath is placed over the crimped scaffold after crimping to reduce recoil of the crimped polymer scaffold and maintain scaffold-balloon engagement relied on to hold the scaffold to the balloon when the scaffold is being delivered to a target in a body. The sheath is removed by a health professional either by removing the sheath directly or using a tube containing the catheter.

An implantable medical apparatus includes a structure formed from bioabsorbable polymers. The apparatus also contains a therapeutic agent dispersed throughout the structure or coated on the structure in such a manner as to elute the therapeutic agent when implanted in an anatomical conduit. The apparatus can be constructed from a blend of polymers and other agents. The apparatus is implanted into the conduit by expansion with a balloon or some other expandable means. The morphology or arrangement of the polymeric structure ensures that the device maintains its shape characteristics to ensure proper modeling of the vessel. In particular, the crystallinity of the polymeric structure is adjusted so as to resist recoil.

A system for connecting an accessory to a firearm having an enlarged muzzle portion has a body with a bore sized to closely receive the enlarged portion. The body has a stop to limit the insertion depth of the muzzle. A gate is received by the body for movement along the path perpendicular to the bore axis. The gate has a recessed area sized to receive the enlarged muzzle portion. A spring generates axial force to retain the muzzle portion within the recessed area. Compression of the spring enables movement of the gate to shift between an open and closed position, so that the accessory may be removed or installed when in the open position, and secured when in the closed position.

An improved muzzle brake, attached to the end of a rifle barrel reducing the recoil of the rifle includes an internally threaded attaching end, engaging outer threads of a rifle barrel, a flattened projectile end, with an overall increasing taper from the attaching end to the projectile end, a flat upper surface which does not impede the sight line of the rifle, a flat lower surface, and two lateral surfaces including a first lateral oval vent, a second lateral oval vent and a third lateral oval vent, the first lateral vent defining a first flat brake plate having a first central bore, the second lateral oval vent defining a second flat brake plate having a second central bore and the third lateral oval vent defining a third flat brake plate having a third central bore penetrating through the projectile end, wherein a bullet fired from the rifle travels through the attaching end, the first central bore, second central bore and third central bore, while the gasses generated by the fired projectile are deflected laterally by the first flat brake plate, second flat brake plate and third flat brake plate, forcing the rifle forward, reducing the recoil force of the fired rifle.

A system for mounting a stent on a balloon catheter includes two positioning and alignment stations, which are used to prepare a stent and catheter for crimping using the same crimping head. The system is configured for automated assembly of the stent and catheter prior to crimping. A catheter and stent are placed on a computer-controlled carriage that delivers the stent and catheter to the crimper head. Before placing the stent and catheter into the crimper head, an automated alignment system locates the stent between balloon markers.

The invention relates to an expandable stent comprising circumferentially adjacent modules. The modules comprise longitudinally adjacent slide-and-lock radial elements which permit one-way sliding of the radial elements from a collapsed diameter to an expanded / deployed diameter, but inhibit radial recoil from the expanded diameter.

A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. A sheath pair is placed over the crimped scaffold after crimping to reduce recoil of the crimped polymer scaffold and maintain scaffold-balloon engagement relied on to hold the scaffold to the balloon when the scaffold is being delivered to a target in a body. The sheath pair is removed by a health professional before placing the scaffold within the body.

A system for connecting an accessory to a firearm having an enlarged muzzle portion has a body with a bore sized to closely receive the enlarged portion. The body has a stop to limit the insertion depth of the muzzle. A gate is received by the body for movement along the path perpendicular to the bore axis. The gate has a recessed area sized to receive the enlarged muzzle portion. A spring generates axial force to retain the muzzle portion within the recessed area. Compression of the spring enables movement of the gate to shift between an open and closed position, so that the accessory may be removed or installed when in the open position, and secured when in the closed position.

A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. A sheath pair is placed over the crimped scaffold after crimping to reduce recoil of the crimped polymer scaffold and maintain scaffold-balloon engagement relied on to hold the scaffold to the balloon when the scaffold is being delivered to a target in a body. The sheath pair is removed by a health professional before placing the scaffold within the body.

A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. A sheath pair is placed over the crimped scaffold after crimping to reduce recoil of the crimped polymer scaffold and maintain scaffold-balloon engagement relied on to hold the scaffold to the balloon when the scaffold is being delivered to a target in a body. The sheath pair is removed by a health professional before placing the scaffold within the body.

A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. A single piece sheath is placed over the scaffold immediately following crimping of the scaffold to the balloon. The single piece sheath is replaced by a two-piece sheath, which is removed prior to performing a medical procedure using the medical device.

A recoil force mitigating device for cooperating with a firearm to mitigate recoil forces imparting undesirable forces to mounted firearm accessories. The recoil force mitigating device includes a recoil rail assembly having a first rail for mounting to the firearm and a slideable second rail for mounting accessories. A recoil force mitigating means is positioned between the first and second rails to mitigate transfer of forces, such as recoil forces, from the first rail to the second rail.

The invention discloses a portable low-voltage electromagnetism riveter applied to the electromagnetism riveting technology, which mainly provides an electromagnetism riveting method for the work condition with poor openness of a riveting and operation environment of a medium-small rivet and high requirement on the flexibility of riveting process, and changes the current situation of large volume, heavy mass and inflexible operation of the existing electromagnetism riveter. The technical structure of the invention is composed of a front cover, a shell, a rear cover, a spring slideway, a rear cover flange, a coil, an amplifier, a punch, a rubber shock absorber, a damping spring and other components; under the low pressure condition of 300-1000V, the riveter can be used for carrying out the riveting of a high-strength aluminum alloy riveter with the diameter of 5mm or the riveting of the riveter with medium-small diameter made of other metal materials. The total mass of the riveter is as light as 3.0-4.5kg, is convenient to handheld operation, has remarkable damping effect, low recoil and high operation flexibility and reduces the labor intensity.

Recoil mitigating devices and methods for use with projectile firing systems such as a disrupter mounted to a robotic arm. A pair of parallel spring provides dampening of axial recoil movement of the disrupter relative to the robotic arm. Forward ends of the springs are attachable to the barrel of the disrupter while rearward portions of the springs are attachable to the robotic arm by a robot mount block. The robot mount block at least partially encloses the barrel of the disrupter in connecting the parallel springs and permits axial movement of the disrupter along or through the mount during firing.

A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. A sheath is placed over the crimped scaffold after crimping to reduce recoil of the crimped polymer scaffold and maintain scaffold-balloon engagement relied on to hold the scaffold to the balloon when the scaffold is being delivered to a target in a body. The sheath is removed by a health professional either by removing the sheath directly or using a tube containing the catheter.

The invention discloses equipment of processing incorporate urban sewage and its technics. The equipment is made of armor plate. It includes internal electrolysis reaction area, machine-adding mixing system, helix flocculation depressed area and biolobical reaction area. Sewage can reach GB8978-1996 discharging standard through internal electrolysis reaction, flocculating settling (to remove phosphor), aerobic biological reaction, anaerobic reaction and filtration. Adopting incorporate treatment technics, the invention has a little floor space, low investment and a good effect. It adapts to urban subzones, blocks in villages and towns and micromidi companies such as urban diet, food processing and abattoir.

A system for mounting a stent on a balloon catheter includes two positioning and alignment stations, which are used to prepare a stent and catheter for crimping using the same crimping head. The system is configured for automated assembly of the stent and catheter prior to crimping. A catheter and stent are placed on a computer-controlled carriage that delivers the stent and catheter to the crimper head. Before placing the stent and catheter into the crimper head, an automated alignment system locates the stent between balloon markers.

A gun flash hider, formed to include a first expansion chamber, a first flow divider, a plurality of first exhaust passages, an exhaust head, a second expansion chamber, a plurality of second exhaust passages and a second flow divider, whereby high-temperature high-pressure gas produced after firing a bullet undergoes two expansion decompressions and two flow diversion decompressions, through which the gas is sequentially discharged from the first exhaust passages and the second exhaust passages, thereby substantially reducing sonic boom volume, amount of flame and recoil force produced when firing the bullet, and increasing stability and shooting accuracy when using a gun.

A muzzle brake includes three primary structural components, namely a main body, a baffle, and an end cap. The components are preferably integrally fabricated into a single piece device, or alternatively may be fabricated separately and assembled. A muzzle brake in accordance with the present invention comprises a generally cylindrical muzzle brake assembly attachable to the muzzle end of a firearm. The muzzle brake assembly forms two expansion chambers, each of which is bounded by a peripheral sidewall defining opposing left and right vent apertures and a converging end wall. The end walls define axially aligned openings sized slightly larger than the diameter of the projectile for allowing the projectile to pass from the firearm muzzle, through the muzzle brake, and onward down the target line toward the intended target. The first chamber defines opposing left and right vent apertures for venting gases generally upward and rearward to reduce muzzle jump. The second chamber defines opposing left and right side apertures, with the left aperture being substantially larger than the right aperture for venting gases to counter torque related movement.

A gun flash hider, formed to include a first expansion chamber, a first flow divider, a plurality of first exhaust passages, an exhaust head, a second expansion chamber, a plurality of second exhaust passages and a second flow divider, whereby high-temperature high-pressure gas produced after firing a bullet undergoes two expansion decompressions and two flow diversion decompressions, through which the gas is sequentially discharged from the first exhaust passages and the second exhaust passages, thereby substantially reducing sonic boom volume, amount of flame and recoil force produced when firing the bullet, and increasing stability and shooting accuracy when using a gun.

A breech system for a firearm exhibits a breech which can be locked in its movement in the barrel block by at least one locking element, which is pressed against the rear end of the barrel by means of a breech spring surrounding the rigid barrel of the weapon, the barrel being enclosed with the exception of the front and rear apertures, whereby the breech spring is supported at the rear section of the barrel and at least one link element subjected to tension connects the front end of the breech spring and the breech. In order to guarantee precise function and in a manner which is safe for the user, by means of a simple arrangement which is reproducible in manufacture, a purely mechanical delay element is inserted in the link between the breech (10) and the breech spring (9).

A muzzle brake and stabilizing device is provided for a firearm having a barrel, the barrel having a barrel axis, a muzzle, and a breech end. The muzzle brake comprises walls defining a first chamber adjacent the muzzle end of the barrel, the first chamber having a substantially closed end wall and side wall through openings. Walls defining a second chamber are proximate the first chamber, the second chamber has a substantially closed end wall and side wall through openings. Walls defining a third chamber are proximate the second chamber, the third chamber with a substantially open end and having side wall through openings. Walls defining an intermediate chamber are adapted to receive gases passing through the side walls of the first, second, and third chambers, the intermediate chamber with closed side walls and a substantially closed end wall. Walls defining a fourth chamber are proximate the end wall of the intermediate chamber, the fourth chamber having a substantially open end, and side wall closed end openings.

An anti-recoil system for counteracting recoil in firearms and weapons using a gas actuated piston assembly is disclosed. A recoil piston is acted upon by gas pressure routed from the receiver / barrel. High pressure gas causes forward movement of the recoil piston thereby generating a force opposing the recoil generated upon firing. A shock absorbing bumper connected to the piston engages the weapon's rearwardly moving bolt assembly. The bolt assembly forces the recoil piston rearward and compresses the bumper and expanded gas in the recoil piston chamber thereby absorbing additional recoil forces. Upon reaching a rear most position a gas relief valve is opened allowing venting of the compressed gases at which point the bolt operating main spring propels the bolt assembly forward, stripping the top round out of the ammunition magazine, loading the next round, locking the bolt and freeing the firing pin to fire the next round. An electrical generation system designed to meet the current and future needs for individual combatants utilizes hereto fore wasted energies produced in the firing of a modern weapon. Specifically it is designed to convert the wasted energy contained in the ejected high pressure gasses and the subsequent recoil produced by the gasses accelerating a projectile to high velocities, and the energy contained in the rapidly moving bolt assembly. This energy is capable of being stored within the weapon, or in external, individual battery packs.

A trigger group assembly for a semi-automatic shotgun includes a follower pin that is slideably attached to a sliding track assembly. The follower pin engages a pair of tracks to facilitate cooperation the sliding track assembly's carrier with the shell retainer of a detachable magazine in such a way that when the bolt is propelled rearward, a cartridge is released from the magazine, and when the bolt is propelled forward, the cartridge is lifted by the carrier into the path of the bolt and loaded into the chamber of the firearm.

The invention relates to a rapid clutching device for wire straightening shearing machines, which comprises a fixed saw-shaped gear, a movable saw-shaped gear, a hanger which has a shape like the part of the hand between the thumb and the index finger, a returning device, an angle-iron cover plate, a movable shaft, a spring, a baffle, a sleeve shaft, a pulling connecting piece, an electromagnet frame, a fixed shaft, wherein the fixed saw-shaped gear is fixedly connected with the fixed shaft; the movable saw-shaped gear is fixedly connected with the movable shaft; the movable shaft is arranged in the sleeve shaft and is movably connected with the sleeve shaft; and the fixed saw-shaped gear movably meshes with the movable saw-shaped gear. The device has the advantages of high separation speed, small recoil force, stable positioning and locking and especially long life span, and can not be subjected to clutching failure caused by that too strong impact inertia force causes the returning device to skid and be unhooked.

A electric power steering apparatus having a steering torque detecting unit for detecting a steering torque transmitted to the steering system; an electric motor for generating a steering assist force to give to the steering system; a motor control unit for controlling the electric motor based on at least the steering torque. The apparatus comprises a motor stop condition detecting unit for detecting a condition to stop the electric motor while the electric motor is under control by the motor control unit; and an electromagnetic brake control unit over the electric motor in order to suppress a kick-back based on at least either one of a steering condition of the steering system and a running condition of the vehicle when a detection result by the motor stop condition detecting unit shows that a condition occurs to stop the electric motor.