165results about How to "Precise tension" patented technology

A bioabsorbable band system is provided. The system comprises a bioabsorbable elongated band and two locking member systems. This band system may be used to heal bone fractures or osteotomies.

Systems, devices, and methods are provided for measuring forces in the space of a knee during surgery. Such forces can be caused by tension in the ligaments of the knee. A femoral member is engaged with a distal femur. While the knee is flexed, partially extended, or fully extended, a force sensor and a gauge shim can be placed in the gap between the femoral member and the tibial plateau to measure the forces therebetween. The force sensor provides an accurate and quantifiable measurement of force, making knee replacement surgery and ligament tension balancing more accurate, standardized and repeatable. The force sensor comprises an elongate housing which comprises a thin force sensing distal portion and a proximal handle portion.

Sustained over-tensioning of a power transmission device, such as a chain drive in an internal combustion engine, is prevented by overriding a tensioner ratchet mechanism to permit retraction of a tensioner. Tooth angle of the ratchet mechanism and pawl spring rate and preload are selected so that a sufficient axial force generated by chain / belt tension will produce a transverse force that overrides a biasing force acting on a pawl engaging a rack of the ratchet mechanism to retract a tensioning piston against hydraulic pressure and spring pressure by at least one tooth to reduce the sustained tensioning force applied to the chain / belt, while not adversely affecting the rack extension function. The tooth geometry of the pawl and / or rack of the ratcheting mechanism may have an angle chosen to be slightly less than the self-locking friction angle to permit retraction.

A modular welding wire feed drive for use in a welding system. The welding wire feed drive is designed to be detachably connected to the welding wire feed system of the welding system. The welding wire feed drive includes a drive housing designed to be detachably connectable to the welding wire feed system, a wire contact arrangement designed to controllably feed welding wire through the welding wire feed drive, and a drive motor that is connected to or interconnected to the wire contact arrangement to at least partially drive the wire contact arrangement.

A fishing reel has a reel unit that is mounted on the fishing rod, a spool that is rotatably attached to the reel unit, a tension detector that detects tension applied to the said fishing line, and a communication portion that transmits to a fishing information display apparatus data of the tension applied to the fishing line detected by the tension detector. The fishing information display apparatus is provided externally of a fishing reel, and receives data communicated from the fishing reel. The fishing information display apparatus includes a body member, a display portion provided in the body member, a communication portion that receives from the fishing reel data of the tension applied to the fishing line, and a controller that is displays on the display portion the data of tension received from the fishing reel. A navigator away from an angler can certainly have information of the fishing situation.

A tensioning device has a tension arm mounted on a base. A pulley is mounted on the tension arm for engaging a looped belt. By changing mounting bushings, one can select either a static mode wherein the tension arm is held stationary relative to the base, or a dynamic mode wherein, in response to a changing force applied between the pulley and the belt (due to vibrations or load changes, for example), the tension arm moves relative to the base in such a manner as to maintain the force substantially constant. Several such devices can be employed in a system for controlling the tension of a looped belt, one or more of the devices being in the static mode and one or more being in the dynamic mode. Several such systems can be employed in a complex machine such as a photocopier or medical apparatus for controlling the tension in a number of different belts.

A method and apparatus for monitoring a predetermined condition of a medium by; transmitting acoustical waves through the medium, continuously measuring changes in the transit time of the acoustical waves resulting from changes in the monitored condition; and utilizing the changes in transit time to provide a continuous measurement of the changes in the monitored condition. The acoustical waves are bending waves wherein cross-sections of the medium have a rotational movement orthogonally to the axis of propagation of the waves through the acoustical channel. Several examples of such method and apparatus are described, including a highly sensitive pressure sensor for sensing changes in pressure applied to a displaceable membrane, and a highly-sensitive vibration sensor for sensing earth or other vibrations.

A bioabsorbable band system for securing a bone fracture, or an osteotomy, or a soft tissue on a bone. The bioabsorbable band system includes a needle system and a bioabsorbable band including a bioabsorbable locking member. The bioabsorbable band includes a length having an at least partially oriented structure. The bioabsorbable band further includes a locking mechanism with a locking member. Also a method for producing the bioabsorbable band.

The invention discloses a tensile force detecting device for a conveyer belt. The tensile force detecting device comprises a chassis, a pipe, a spring, a pulley, a connecting block and a pressure sensor, wherein the chassis is hollowed and is arranged between the upper side and the lower side of the conveyer belt; the pipe is connected with the chassis, is hollowed and is arranged along a vertical direction; the spring is placed in the pipe; the pulley is arranged at a first end of the spring through a pulley support; a rotating shaft of the pulley is arranged on the pulley support; the pulley is held out against the inner surface of the conveyer belt which moves towards the lower side; the connecting block is arranged at a second end of the spring; the connecting block is placed in the chassis; the pressure sensor is placed in the chassis and is in contact with the connecting block; and the pressure applied by the connecting block to the pressure sensor can be detected by the pressure sensor. According to the tensile force detecting device for the conveyer belt, the real-time tensile force of the conveyer belt is detected through the spring and the pulley; the tensile force is collected from the lower side of the conveyer belt so as to remove the interference caused by the materials borne by the conveyer belt; and the spring ensures that the pulley can be clung to the conveyer belt all the time, so that accurate tensile force can be acquired.

An improved drumhead comprising a substantially annular hoop having a generally planar upper member spaced apart from a generally planar lower member, a circumferential inner rim and a circumferential outer rim. Also provided is a film material or membrane for constituting a drumming surface, which extends flat across the area defined within the circumferential inner rim and the circumferential outer rim. Integrally formed with the film material or membrane of the drumming surface is an annular shoulder, which extends at its base between the planar upper and lower members in a co-planar orientation with the annular hoop. The drumhead is adaptable for use with a large variety of percussion instruments including toms, snare drums, bass drums, tambourines, congas, bongos and many other types of ethnic and other drums.

A standard for supporting a game net above a playing surface is provided with an internal net tensioning system which allows the standard to be stored beneath the playing surface. A plurality of pre-set height stops are provided along the length of the standard to allow the net to be set at one of several different heights to accommodate the playing of different games by different playing abilities. Power cylinder mechanics permits the automatic raising and lowering of the standard with respect to the playing surface. A quick attachment system is provided for quickly and easily engaging and disengaging the net from the standard.

A check valve unit in a hydraulic tensioner comprises a check ball which controls the flow of the oil to and from a high pressure oil chamber formed by a plunger and the plunger-receiving hole of the tensioner housing, a ball guide in which the check ball moves, a retainer which seals the check ball in the ball guide, and a ball seat which blocks reverse flow of oil by seating the check ball. Grooves, which ventilate air from the high pressure oil chamber to an oil supply passage, are formed on an outer circumferential surface of the ball guide and a bottom surface of the ball seat.

A brake beam including means for allowing the brake head to be replaced without effort and to include replaceable brake heads.

An electric power steering apparatus comprises a speed reducing mechanism for decelerating the rotation of a rotatable shaft in an electric motor and a converting mechanism for converting the output rotation of the speed reducing mechanism into the axial movement of a steering shaft extending toward the right and left sides of a vehicle. The speed reducing mechanism comprises an input pulley driven by the electric motor, an output pulley arranged with the steering shaft enclosed thereby, a belt for connecting the input pulley and the output pulley to each other, and means for adjusting the tension of the belt.

A bottom bracket assembly for use on a bicycle, the assembly provided as a split bracket assembly with an upper portion formed integrally with the bicycle frame and a lower portion detachably connectable to the upper portion, the lower portion completely removable from the upper portion. The bottom bracket assembly provided to capture a crank shaft therein with associated bearings to facilitate the rotation of the crank shaft assembly.

A modular welding wire cartridge for use in a welding system. The welding wire cartridge is designed to be detachably connected to the welding wire feed system of the welding system. The welding wire cartridge includes a drive housing designed to be detachably connectable to the welding wire feed system, a wire contact arrangement designed to controllably feed welding wire through the welding wire cartridge, and a spool of welding wire.

A modular bicycle comprising a first section having a front frame section and a first tire, a second section being couplable to the first section and comprising a central frame, and a third section being couplable to the second section and the first section, with the third section comprising a rear frame section, a second tire, and a handle bar. The bicycle also comprises pedals that are removably securable to the crank arms of the bicycle.The pedals comprise a foot rest, a base section secured to the foot rest, and a locking member pivotally connected to the base section. The locking member is insertable into a through bore located on the crank arm and is pivotally rotatable towards the crank arm, thereby securing the pedal to the crank arm.

The invention discloses an automatic plate-feeding device of a printer. The device comprises a plate cylinder, a central shaft, a bearing plate, a plate supporting roller, a plate tail clamp bar and a plate head clamp bar, wherein cam shafts are arranged on the plate tail clamp bar and the plate head clamp bar respectively; a pressing plate is arranged opposite to the plate tail clamp bar and theplate head clamp bar; the device also comprises a plate tail tensioning device and a pneumatic control device; the pneumatic control device comprises a rotary pneumatic device and a telescopic pneumatic device; a plate tail tensioning pushing swing rod and a plate tail tensioning transmission swing rod are sleeved on a plate tail tensioning swing rod shaft; a transmission tooth is arranged on a driving swing rod; the transmission tooth on the driving swing rod is in engaged transmission with a plate tail tensioning swing rod driving shaft; a rotary cylinder is arranged outside the bearing plate; a rotary cylinder driving swing rod is in engaged transmission with a transmission gear of a telescopic cylinder; the telescopic cylinder is fixed outside the bearing plate; and transmission grooves are formed at end parts of a gear shaft respectively. The automatic plate-feeding device of the printer has the advantages of simple structure, accurate tensity of a printing plate, simple transmission process, high working efficiency, low manufacturing cost and application to printing houses of all scales.

The invention discloses a carbon fiber integrated laying device. The device comprises a material supply unwinding mechanism, a guide mechanism, a tension adjusting mechanism, a tension measuring mechanism, a re-feeding mechanism, a clamping mechanism, a shear mechanism and a compaction mechanism located below the bottom plate, wherein the material supply unwinding mechanism, the guide mechanism, the tension adjusting mechanism, the tension measuring mechanism, the re-feeding mechanism, the clamping mechanism and the shear mechanism are located above the bottom plate. Fibers on the material supply unwinding mechanism pass through the re-feeding mechanism, the clamping mechanism and the shear mechanism and then are compacted and cured on the surface of a mold through the compaction mechanism, in the above transmission process, guidance through the guide mechanism is achieved, the fiber bundle tension is adjusted passively through the tension adjusting mechanism, and the fiber bundle tension is measured through the tension measuring mechanism. Through elastic force effect of a spring, the distance between a compaction roller of the compaction mechanism and the surface of the mold can be passively adjusted, and therefore the device can meet the mold laying requirements of different curve faces and control requirements of a monofilament bundle.

An electric power steering apparatus comprises a speed reducing mechanism for decelerating the rotation of a rotatable shaft in an electric motor and a converting mechanism for converting the output rotation of the speed reducing mechanism into the axial movement of a steering shaft extending toward the right and left sides of a vehicle. The speed reducing mechanism comprises an input pulley driven by the electric motor, an output pulley arranged with the steering shaft enclosed thereby, a belt for connecting the input pulley and the output pulley to each other, and means for adjusting the tension of the belt.

The invention relates to a metal mask plate tensioning machine, which comprises a tensioning device, wherein the tensioning device comprises a clamping mechanism used for clamping a metal mask plate, a horizontal adjustment mechanism and a tension adjustment mechanism; the clamping mechanism comprises a plurality of independent clamping sheets suitable for clamping the four edges of the metal mask plate; the horizontal adjustment mechanism is connected with the clamping mechanism and used for roughly adjusting the horizontal tension force of the metal mask plate; and the tension adjustment mechanism is arranged on the clamping mechanism and used for finely adjusting the horizontal tension force of the metal mask plate. According to the metal mask plate tensioning device, the metal mask plate can be accurately fixed and tensioned before being welded to a plate frame and cannot be deformed, so that the welding efficiency of the metal mask plate is effectively improved and the welding precision of the metal mask plate is improved, thereby improving the production quality of OLEDs (organic light emitting diodes).

Provided is a fabricating apparatus for a secondary battery, the fabricating apparatus including: a base material supplier configured to supply a base material; a winder configured to wind the base material through a mandrel; and a controller configured to control a base material supply amount of the base material supplier and a mandrel rotation amount of the winder, wherein the controller is further configured to store a profile of the base material supply amount with respect to the mandrel rotation amount, and to synchronously control the base material supply amount and the mandrel rotation amount based on the profile.

A belt conveyor system (10) having a continuous, looping carrier belt (28) entrained around a belt plate (20) which is supported by a frame (12). The belt plate (20) is secured to the frame (12) by securement pins (26a) and pivot pins (26b). The carrier belt (28) is driven externally rather than internally and is tensioned with minimal obstruction to removing the belt (28), which thereby facilitates disassembly of the system (10), particularly frequent removal, cleaning, and replacement of the belt (28) as may be necessary or desirable in, for example, the food processing industry. More specifically, the drive mechanism (14) is located substantially completely outside of and adjacent to the internal area (41) defined by the looping belt (28), and the tensioning mechanism (22) is low profile presenting minimal to no obstruction when removing the belt (28) from the belt plate (20).