198results about How to "Quick tighten" patented technology

A wall structure has a telescoping portion and a stationary portion. An overlapping section of the telescoping portion has a recess to allow dry wall to be fastened to the stationary portion at the overlapping section without being attached to the telescoping portion. The fastener pierces through the drywall and a sidewall of the stationary portion. However, a tip of the fastener does not engage a sidewall of the telescoping portion. Rather, the tip of the fastener stops within the recess of the telescoping portion.

An adjustable torque limiter that can be coupled between a high speed driver and the socket that rotates a mechanical fastener. When a preset torque level is reached, the torque limiter disengages the rotational drive force from the bit. The adjustability of the torque limitation is accomplished by varying the amount of spring force by which a thrust plate (coupled to the high speed driver) is forced against a set of steel balls residing in slots of a radial torque plate and in a set of paths formed in a concavity of an upper torque body (coupled to the driven socket engaging stud). When a certain preset torque is transmitted from the driver to the socket, the steel balls traverse outward along the separate arced ramp radial paths therein the upper torque body until the balls enter an annular race that allows the thrust plate to go into a disengaged or free wheel mode from the upper torque body.

An adjustable vascular compression device assists in achieving partial or full occlusion of a blood vessel when applied to a patient's limb, for example, during or following a medical procedure. Pads on the device apply preferential compression to portions of the circumference of the limb so as to enable blood flow through adjacent blood vessels during the compression period. Further, rapid fastening, tightening, loosening and release is enabled by a single mechanism, and gradual adjustments to the tightness may be made without releasing said mechanism.

The multifunctional fish and lobster harvesting system is a device resembling a spear gun that uses an elastic band to propel a thrust shaft through a barrel toward a marine game animal. Either a spear point or a tri-barb gig can be coupled to the front end of the shaft and a lasso-snare is attached to the back end of the shaft. The shaft is propelled by the elastic band, with one end of the band attached to the handle and the other end attached to the back of the shaft. A user pulls the thrust shaft toward the back, stretching the band, and releases the shaft to propel the shaft toward a marine game animal. The shaft never leaves the barrel but stops via a travel limiter on the shaft. The device is able to be used with the back end facing forward to use the lasso-snare.

The present invention relates to a bicycle fork comprising an improved axle with non-round tapered ends affixed into dropouts with openings to match the axle ends through a taper-lock affixation for improving the torsional strength of the fork and facilitate ease of the axle installation. The improved axle consists of a first non-round end with interior female threads connecting an intermediate cylindrical portion which connects to a second non-round tapered end. An improved tapered split non-round nut having a cylindrical bolt possessing male threads lock the nut to the first end of the axle, wherein said bolt has an another preferred embodiment which connects a rotatable handle for ease of the axle installation.

An improved ratchet or gear wrench that has a built-in, non-slip, gripping clip mechanism for retaining a nut in the tool, which can either be applied to the nut or clamped out-of-the-way. This tool allows a nut to be tightened or loosened from a bolt or threaded stud more quickly and with one hand. To attain this, the present invention essentially comprises a spring-loaded curveshaped gripping clip, mounted near the boxed-end of a ratchet wrench, which wraps around the opening of the wrench. The spring action of the gripping clip allows it to be easily pulled away from the opening of the wrench and clamped in an out-of-the-way position by means of a clamp or released into a functional gripping position by pushing downward on the clamp's release button. When released, the gripping clip presses against a nut, thereby creating pressure that secures the nut in the opening of the wrench. Optionally, a second gripping clip mechanism can be added on the opposite side of the wrench, positioned to apply force on the nut from the opposite direction, thereby providing non-slip nut retaining capability. In use, a mechanic or user will pull the spring-loaded gripping clip back away from the wrench's opening and snap it into the clamp, thereby storing potential energy in the spring. A nut is then placed in the wrench opening and the clamp's release button is pressed momentarily in a downward motion, releasing the gripping clip and allowing the spring to pull the gripping clip against the nut. The nut can be started on the bolt using only one hand and then quickly tightened without the wrench slipping off the nut. When removing a nut, the nut will remain retained in the tool until the user removes it, thereby preventing the nut from falling into an undesirable location that may make it difficult to find or reach.

The invention relates to a finned tube assembly technique method for manufacturing heat exchangers, provides a finned tube locating fixture of a heat exchanger, and aims to solve the problems that the operation efficiency is low, and dislocation is easy to occur when a group of finned flat tube bundles is tightened and assembled to a collecting tube. The finned tube locating fixture comprises a bracket, a driving mechanism and a group of tube fixators, wherein each tube fixator is provided with at least two locating points; and the tube fixators can be driven to move between a first locating point and a second locating point through the driving mechanism so as to drive each flat tube to reach the position corresponding to the slot of the collecting tube. Each flat tube and fin in the front and back directions are uniformly stressed and tightened through the finned tube locating fixture; the group of finned flat tube bundles is tightened at a set distance and position quickly, accurately and uniformly; the finned tube locating fixture is simple and reasonable in structure; and the production efficiency and precision of a finned tube locating assembly process are improved.

The invention discloses a fast locking nut, which is provided with a hollow main body, wherein the wall of a cavity in the main body is provided with divided threads, and a spring and a fixing piece for fixing the spring are arranged below the divided threads. The fast locking nut is a technical innovation for a water faucet fixing mode, and a water faucet can be tightened quickly by replacing a common nut with the fast locking nut; besides, the fast locking nut has the advantages of easy use and quickness.

The present invention pertains to a screw with a first thread section comprised of a trailing and a leading thread segments respectively spiraled on a shank and a tip section. Distinctly, the leading thread segment defines a plane surface thereon to convergently engage with an adjacently thread peak on the trailing thread segment and further constructs a thread width greater than that of the trailing thread segment while aligning the two thread segments with a correspondent profile thread height. Such configuration of the plane surface accompanies its larger thread width to enlarge a drilling channel and accordingly renders an easy entry of the trailing thread segment into an object with less friction and higher screwing speed. Additionally, the debris is partially removed through the void between the enlarged channel and the trailing thread segment to avoid cracking the object, decrease drilling torque, and enhance the fastening capability.

A bicycle caliper brake includes a cable housing at an upper end of a first arm; a pivotal second arm comprising a coupling member at one end and a stepped groove on a bottom edge of the coupling member; a brake cable loosening and tightening device comprising a first unit, a second unit for pivotably securing the device to the coupling member, and a hole; a cable fastener secured to the first unit; a brake cable passing the cable housing to be fastened at the cable fastener; and a spring depressible trigger pin comprising a C-ring at one end, the trigger pin being driven through the groove and the hole to releasably secure the C-ring to the hole. Pressing the trigger pin will unfasten the C-ring and pivoting the device about the second unit will loosen the brake cable and increase a distance between brake pads at arms' ends.

The invention discloses a fastening device and belongs to the fields of machines and new technologies. The problem that a bolt is inconvenient to use, and therefore it takes a long time to screw the bolt is solved. One end of a cylindrical ridge rack (1) is a round head (2), the cylindrical ridge rack (1) is located in a support plate (5) in a concave shape, a sleeve fork (3) is supported by the two sides of the support plate (5), one ridge tooth of the ridge rack (1) is sleeved with the sleeve fork, and a wheel disc (4) is arranged at one end of the sleeve fork (3). The fastening device is used for fastening and connecting articles on a machine and widely used for mechanics, electronic and mechanics, industry, agriculture and others.

The invention discloses a manual wrench which is convenient for taking out or tightening nuts in a long and narrow space. The main features are: the right end of the inner hollow formed by the upper shell and the lower shell is welded to each other with a driving sprocket, and the left end of the inner hollow is equipped with a driven sprocket, and the tooth A of the driving sprocket meshes with the right end of the chain. Transmission, the left end of the chain meshes with the tooth B of the driven sprocket; the square column A of the integrated structure at the upper end of the first journal of the driving sprocket is in motion with the square hole A at the left end of the hand crank; the driven sprocket The square column C of the integrated structure at the lower end of the fourth journal is in dynamic fit with the square hole B at the upper end of the sleeve. Just insert the square hole B at the upper end of the sleeve that is compatible with the nut into the square column C at the lower end of the driven sprocket, insert the 12-angle hole sleeve at the lower end of the sleeve on the nut, and rotate the first journal of the driving sprocket The square column A on the upper end can be easily and quickly removed or tightened by the hand crank matched with the hand handle in the narrow and long space, reducing labor intensity and improving work efficiency.

The invention discloses a steel bar connecting machine which comprises a machine frame body with a working platform. A positioning and clamping base which clamps steel bars at the fixed end and can axially slide is arranged on the working platform. A first bearing pedestal and a second bearing pedestal are arranged on the positioning and clamping base in the axis direction. A driven shaft is arranged between the two bearing pedestals in a connected mode. The driven shaft is provided with a through hole where steel bars at the rotating end can penetrate. The end, close to the positioning and clamping base, of the driven shaft is connected with a three-jaw chuck for clamping the steel bars at the rotating end. The other end of the driven shaft is connected with a driven wheel. The steel bar connecting machine further comprises a driving motor. The driving motor drives a driving wheel to rotate. The driving wheel drives the driven wheel to rotate. The steel bar connecting machine has the advantages that the steel bars and sleeves can be rapidly fastened, the labor intensity of workers can be lowered, and the working efficiency can be improved.

The invention discloses an adjustable multishaft screwing mechanism, which comprises angle adjusting mechanisms, radial adjusting mechanisms, single-shaft screwing machines, a frame and a driving control unit, wherein the angle adjusting mechanisms are fixed on the upper disc of the frame, the radial adjusting mechanisms are installed on a lower disc, adjusting link rods are used for connecting the angle adjusting mechanisms with the corresponding radial adjusting mechanisms, the single-shaft screwing machines are installed on the radial adjusting mechanisms, and the driving control unit is installed on the top cover of the frame. By adopting the invention, the screwing speeds, moments and directions of different single-shaft screwing machines are controlled; and the adjustable multishaft screwing mechanism disclosed by the invention has the advantages of high regulation precision, simple structure, convenience for adjusting and the like, and can realize rapid screwing of bolts at different positions.

An adjustable torque limiter that can be coupled between a high speed driver and the socket that rotates a mechanical fastener. When a preset torque level is reached, the torque limiter disengages the rotational drive force from the bit. The adjustability of the torque limitation is accomplished by varying the amount of spring force by which a thrust plate (coupled to the high speed driver) is forced against a set of steel balls residing in slots of a radial torque plate and in a set of paths formed in a concavity of an upper torque body (coupled to the driven socket engaging stud). When a certain preset torque is transmitted from the driver to the socket, the steel balls traverse outward along the separate arced ramp radial paths therein the upper torque body until the balls enter an annular race that allows the thrust plate to go into a disengaged or free wheel mode from the upper torque body.

A self-drilling screw with multi-drilling portions mainly comprises a shank, a head and a drilling portion separately disposed on both ends of the shank, and a thread section spiraled on the shank. Wherein, at least one sub-drilling portion formed amid the drilling portion and the thread section further defines a sequence of indentations and prominent areas, and each indentation generates a cutting surface outwardly extended from one side thereof so as to converge the cutting surface with the adjacent prominent area at a cutting ridge. Accordingly, the application of the cutting ridges and the indentations facilitates the drilling portion with the chipping capability and renders an appropriate guidance to redundant debris, thereby efficiently achieving a swift screwing and the lowered screwing resistance to promote the screwing efficiency.

The invention provides a screw driving device. The screw driving device comprises a mounting seat, a servo motor, a screw tightening end and a driving cylinder; the mounting seat is connected with a preset fixed foundation; the servo motor is movably arranged on the mounting seat in the vertical direction; the screw tightening end is used for clamping a screw to be tightened; the servo motor is connected with the screw tightening end to drive the screw tightening end to rotate around the axis so as to drive the screw to rotate; the driving cylinder is fixedly arranged on the mounting seat; thedriving cylinder is connected with the servo motor to drive the screw tightening end to move in the vertical direction by using the servo motor so as to drive the screw to move in the vertical direction, wherein the screw tightening end rotates in a preset direction and moves to a workpiece to be tightened in the vertical direction so as to tighten the screw on the workpiece to be tightened. Therefore, a radiator fan motor and a motor bracket are rapidly tightened, and the screw driving efficiency is effectively enhanced.

An adjustment assembly for snare wires includes an adjustment unit and a pressing unit respectively located on two opposite positions of the shell of a snare drum. The adjustment unit has a body with a slide slot. A shifting member is slidably connected to the body and driven by a driving member connected to the body. The shifting member has a wire carrier which is adjusted by rotating an adjusting bolt. The pressing unit includes another wire carrier which is controlled by another adjusting bolt. By adjustment of the two adjustment bolts, the tension of the snare wires can be adjusted.

A bicycle caliper brake includes a cable housing at an upper end of a first arm; a pivotal second arm comprising a coupling member at one end and a stepped groove on a bottom edge of the coupling member; a brake cable loosening and tightening device comprising a first unit, a second unit for pivotably securing the device to the coupling member, and a hole; a cable fastener secured to the first unit; a brake cable passing the cable housing to be fastened at the cable fastener; and a spring depressible trigger pin comprising a C-ring at one end, the trigger pin being driven through the groove and the hole to releasably secure the C-ring to the hole. Pressing the trigger pin will unfasten the C-ring and pivoting the device about the second unit will loosen the brake cable and increase a distance between brake pads at arms' ends.

The present invention relates a tourniquet, where tightening of the tourniquet is performed by linear motion by pulling a pull-cord. The tourniquet comprises a tensioning device and a strap. The first end of the strap is coupled to the tensioning device. The second end of the strap is wrapped around a limb and fixed to the tensioning device. The tightening of the tourniquet is achieved by pulling a pull-cord. Linear motion by the pull-cord is translated into winding up the strap inside the tensioning device, and thereby achieving a time-effective tightening of the tourniquet without the need of high forces.

The invention relates to a ship cable tension stabilizer with self-adaptive capacity. The ship cable tension stabilizer comprises a base, guiding guide wheels, a main guide wheel and a tension indicating device; a horizontally-arranged rectangular block is adopted as the base, the tension indicating device is arranged in the middle of the base, and the two ends, in the long-axis direction, of the base are each provided with one guiding guide wheel; the guiding guide wheels are installed on the base through quick-assembly-disassembly pin columns, and the tension indicating device comprises an installing barrel, circular springs and a sliding support; the installing barrel is vertically arranged in the middle of the base, a vertical scaleplate for indicating tension is arranged at the upper end of the outer side of installing barrel, and the circular springs are vertically arranged inside the installing barrel; the main guide wheel and the guiding guide wheels are arranged in a same plane. The ship cable tension stabilizer has the advantages that increasing and decreasing of the cable tension can drive the main guide wheel to rise and fall, a cable can be automatically paid off and taken up while the main guide wheel is displaced, and therefore ship waggling and cable failure are avoided.

The invention discloses an automatic-locating bolt tightening machine. The automatic-locating bolt tightening machine comprises a laser abutting device, a loading device, a horizontal displacement mechanism, a longitudinal displacement mechanism and an objective table. A tightening joint can rapidly find a threaded through hole on a carrier by the laser abutting device, the loading device is used for mounting a bolt on the tightening joint to achieve rapid and automatic bolt mounting process, multiple bolts can be tightened each time, the efficiency is high, the operation is safe and reliable and the productive forces are greatly emancipated.

The invention provides a thread clamping apparatus of a sewing machine and an operation method of the thread clamping apparatus. The thread clamping apparatus comprises a machine head, a needle, a rotating shuttle, a first thread clamper arranged on the machine head, a second thread clamper and a thread picking rod; the needle is provided with a hole which is used for a sewing thread to pass through, the sewing thread successively goes round and passes through the second thread clamper, the thread picking rod, the first thread clamper and the hole of the needle, and when the needle downwardlypierces a fabric, the second thread clamper releases the sewing thread; and after the sewing thread is hooked by the rotating shuttle disposed below the fabric, and when the thread picking rod upwardly moves to collect the thread, the first thread clamper clamps the sewing thread. By adopting the thread clamping apparatus and the operation method thereof, the thread clamping time and the thread release time can be accurately adjusted, the risk compensation can be controlled, the needle can be prevented from being broken or a bottom thread can be prevented from being carried out when in sewingoperation, and the attractiveness of a sewing product can be ensured.

The invention discloses a pair of heat-insulation and cold-proof fire-fighting boots which comprises boot soles, boot uppers and boot legs, wherein the boot soles comprise full rubber outsoles; the full rubber outsoles are further internally provided with anti-puncture insoles; glass fiber protection covering heads supporting boot heads are arranged in the front ends of the boot uppers; lace openings extending downwards from boot leg openings are formed in the front surfaces of the boot legs in a folded manner; tongues are arranged in the lace openings; lace tightening buckles are arranged atthe upper ends of the external surfaces of the tongues; water-proof membrane composite layers are adhered to lining surfaces of the boot legs and the boot uppers; water-proof and flame-retardant layers are adhered to the external surfaces of the boot legs, the boot uppers and the tongues; and aerogel heat insulation blankets for insulating heat are arranged between the full rubber outsoles and theanti-puncture insoles of the boot soles and between the water-proof membrane composite layers and the water-proof and flame-retardant layers of the boot legs. The pair of heat-insulation and cold-proof fire-fighting boots integrates safety protection performance and wear comfortability of fire-fighting boots, can better meet foot protection requirements in an extinguishment and disaster relief process of a firefighter and can be widely applied to extinguishment and rescue operation of the firefighter.

A ratcheting adjustable vascular compression device assists in achieving partial or full occlusion of a blood vessel when applied to a patient's limb, during or following a medical procedure. During deployment, a compression pad on the device applies preferential compression to at least one portion of the circumference of the limb. Further, securement, adjustment and rapid release of the device are all enabled by an alternate ratcheting mechanism that enables gradual adjustments to be made to the tightness and thus to the compression applied without releasing the device, so as to permit patent blood flow through blood vessels in the limb during the compression period.

The invention discloses a full-automatic quick tightening mechanism suitable for a bolt and a nut and relates to the technical field of electric tools. The full-automatic quick tightening mechanism comprises a supporting handle, a nut clamping part and a bolt clamping part. Rotary lifting assemblies are arranged on the front parts of front and back ends of the supporting handle; each rotary lifting assembly comprises a shell, a supporting oil barrel is arranged in the front end of the shell, a supporting column is arranged in the supporting oil barrel, an outer magnetic ring is arranged on theouter side of the supporting oil barrel in a sleeving manner, and a supporting barrel is arranged on the outer side of the outer magnetic ring in a sleeving manner; a first clamping hole is formed inthe middle of the lower end of the nut clamping part, an accommodating hole is also formed in the upper side of the middle of the first clamping hole, and a second clamping hole is formed in the middle of the upper end of the bolt clamping part. The full-automatic quick tightening mechanism has the beneficial effects that the bolt and the nut which are matched with each other can be rotated quickly and reversely by adopting the two symmetrically arranged rotary lifting assemblies, so that the effect of quickly tightening the bolt and the nut is achieved; the full-automatic quick tightening mechanism is convenient and rapid to operate, labor- and operating time-saving and skillful and novel in integral structure, and has a wide market prospect.

The invention discloses a steel reinforcement framework seam welder traction device which comprises a traction plate, wherein a plurality of clamping devices are arranged on the traction plate. Each clamping device comprises a base, a first clamping block assembly and a second clamping block, wherein the second clamping block is perpendicularly arranged on the base, the first clamping block assembly comprises a first clamping block, a lead screw and an installation and positioning block, the installation and positioning block is perpendicularly arranged on the base and parallel to the second clamping block, a thread hole matched with the lead screw in a screwing mode is formed in the installation positioning block, the lead screw penetrates the thread hole, and the first clamping block is arranged at the end of the lead screw between the installation positioning block and the second clamping block. A first arc-shaped clamping surface is arranged on the inner lateral surface of the first clamping block, a second arc-shaped clamping surface is arranged on the inner lateral surface of the second clamping block, and a clamping area for clamping deformed steel bars is formed between the first arc-shaped clamping surface and the second arc-shaped clamping surface. The steel reinforcement framework seam welder traction device is good in traction effect, convenient to operate and capable of saving time and effort.