1956 results about "Tractive force" patented technology

A surgical clamp includes opposing jaws and a covering enhancing traction between the jaws and a body conduit. A multiplicity of fibers oriented to extend longitudinally between the clamp and conduit may be composed of filaments and either woven or non-woven to form a fabric. A variety of weaves are contemplated to provide different textures, each having its own traction characteristics. The nature of the weave can control characteristics such as smoothness, absorption, and texture. The fibers or filaments may be formed from any solid or semi-solid material, adding its own characteristics to the resulting fabric insert or clamp.

Smart Active Tyre Pressure Optimising System [TPOS]102 is a highly time sensitive design and technique that acts instantaneously in sensing and controlling the tire pressure particularly in imminent and inevitable critical driving situations to reduce emergency & high speed breaking distance, mitigate—loss of traction, hydroplaning, roll over, loss of stability, over & under steering, break failure, loss of control due to puncture by smartly sensing, perform context aware computing and directing the Tyre Pressure Control Units [TPCU]104 to instantaneously control the tyre pressure in right time with right pressure on right tyres thereby actively controlling the footprint and sidewall deformation rate to enhance traction & stability simultaneously sustaining drivability or steerability ultimately to avoid or reduce the impact of collusion and overcome or mitigate critical situations for protecting the vehicles, occupants, pedestrians and other objects around or on the way; also according to design, configurations and scenarios the system instantaneously optimises the tyre pressure on all tyres for further safe driving till next restoration else restores the pressure to optimum preset value utilising inbuilt reservoir or other external restoration systems immediately after the vehicle overcomes the critical situation to continue with safe and comfortable driving. In critical situations TPOS performs sensing, pre computing, current computing for controlling the tire pressure during critical situation, post computing to optimise tire pressure after overcoming accordingly. TPOS 102 utilise smart and adaptive closed loop processing algorithm with predetermined and tested lookup table to instantaneously check and compare the effects between predetermined and tested real world scenarios to the actual real world scenarios for actively sensing, computing and controlling the tire pressure accordingly to mitigate the critical situations. The controlling of tyre pressure is computed mainly based on parameters comprising of sensor system, vehicle safety and stability systems, nature of breaking & break force distribution, tires upper & lower cut-off pressure values, sensing reservoirs and tires internal & external pressure, temperature, moisture, humidity, wheel & tire specifications, vehicle & wheel speed, acceleration & deceleration, vehicle orientation & axial rotation, transverse motion & lateral acceleration, tires position or angle of attack, load & torque distribution, tire traction, steering position, cornering effects, change in Centre of gravity, over & under steering, hydroplaning, sensing road conditions, etc and to further enhance the efficiency, the system interoperates with vehicles existing safety and stability systems like ABS, EBD, ESC, TCS, Rollover mitigation systems, ECU, BA, Precrash systems, suspension & vertical dynamics, radar assisted auto breaking, cruise control system, aerodynamics & airbrakes etc. Other aspects of present invention are controlling the tire temperature according to environmental temperature, moisture and humidity thereby to enhance traction and vary tire pressure according to change in centre of gravity & load, driving modes—comfort, standard and sports modes.

A system for controlling a railroad train over a segment of track. The system comprises a first element for determining a location of the train on the segment of track; a second element for providing track characterization information for the segment of track; the track characterization information related to physical conditions of the segment of track; and a processor for controlling applied tractive forces and braking forces of the train responsive to the location of the train and the track characterization information to reduce at least one of wheel wear and / or track wear during operation of the train over the segment of track.

A pneumatic vehicle tire includes a carcass, a bead with a bead core arranged in the bead, and a first sensor located within the bead. The first sensor delivers signals which are correlated to frictional forces transmitted by the pneumatic vehicle tire during operation. This sensor has a first end and a second end, wherein the first end includes a heel attached to the bead core and the second end extends radially outward from the bead core within the tire. A plurality of such sensors can be included in each tire, some for measuring longitudinal forces in a circumferential direction of the tire and others for measuring lateral forces in an axial direction of the tire.

An endless track assembly that mounts to a wheeled vehicle. The assembly provides 1) a track suspension having fixed or adjustable, independently biased sets of idler wheels to vary the track contour without affecting track tension, 2) an eccentric bearing housing at a drive sprocket controls track tension, 3) a contoured peripheral edge at the drive sprocket prevents ice and mud buildup, 4) rubber-coated, plastic idler wheels facilitate track movement, 5) a multi-vehicle compatible adapter mounting plate accommodates a variety of vehicles, 6) a rotation limited torsion coupler and / or rotation limiting coupler arms prevent track contact with the vehicle, 7) a locking steering arm coupler prevents loss of steering control, and 8) shaped track lugs and channels clear and direct debris away from the track suspension and drive assembly. The improved suspension particularly supports sets of idler wheels in pivotal relation to the track support frame and resiliently biases a pre-tensioned rocker arm that links adjacent suspension arms mounted to the adjoining idler wheels. Suspension arm movement induces expansion and contraction of tension springs coupled to the rocker arms to augments shape changes at the track contact surface to optimize traction and steering control.

The surgical device is for supporting a mammalian organ in need of support, and in particular for treating urinary incontinence. The device has at least one first support element of elongate shape for exerting a supporting action on the organ; and at least one first traction filiform element, to be fastened to the support element. One end of the traction element constituting at least one first anchor system, activated by traction exerted on the first traction element thereby simplifying the surgical procedure.

Devices and methods aimed at shortening the time required for healing open wounds are disclosed. The tissues adjacent to wounds are expanded and / or stretched medially by means of an actuator which compressed by vacuum exerts traction on adjacent skin or tissues by means of an adhesively applied circumferent or transverse flange, thus reducing the size of the wound. The degree of vacuum, and traction, may be varied according to demand and applied continuously, cyclically or intermittently. Active treatment of the wound may be accomplished concomitantly by means of a conduit through the said actuator.

A haptic device includes a substrate that is subjected to lateral motion such as lateral oscillation with one or more degrees of freedom together with modulation of a friction reducing oscillation in a manner that can create a shear force on the user's finger or on an object on the device.

A vehicle powertrain with mechanically independent sets of front and rear traction wheels has separate motive power units. An electronic control system including traction wheel slip control is electronically coupled to a first motive power unit and to a second motive power unit to separately establish maximum rear wheel traction and maximum front wheel traction. Independent requests are made for an increase or a decrease in wheel torque for one set of traction wheels and an increase or decrease in wheel torque for the other set of traction wheels thereby improving acceleration performance and enhancing vehicle stability.

There is provided a piezoelectric device for generating an acoustic signal in which an expansion mechanism expands a disposition of a laminated piezoelectric actuator by the principle of leverage. The mass of a base member placed in the expansion mechanism is larger than the mass of a vibration output member. An overall device size is small. The piezoelectric device has a pressurization structure for reducing a tractive force acting on the laminated piezoelectric actuator which is generated by the amplification. This enables provision of a piezoelectric device for generating an acoustic signal that is a small size, highly resistant to dropping impact, and has god acoustic performance with less sound leakage.

A system may comprise a clot engagement element having a collapsed delivery configuration and an expanded configuration for engaging with a clot and for dislodging the clot from a first vessel segment. An elongate member may be configured to apply a pull force to the clot engaging element to dislodge the clot from the first vessel segment. A clot removal catheter may include a lumen at its distal end sized to receive the clot and configured to maintain a stable position in a second blood vessel segment proximal of and larger in diameter than the first blood vessel segment. A distal end of the elongate member may be configured to protect a third blood vessel segment between the first and second blood vessel segments from tractive forces transmitted by the elongate member during clot dislodgement from the first vessel segment.

The invention discloses an orientation electro-spinning nanometer fiber spinning method and a device thereof. A metal shower nozzle which exerts positive and negative high pressure is adopted to spin two strands of nanometer fibers with opposite charges, an electric field line of a spinning electric field, relative to a common spinning electric field, is straight, stability of spinning is effectively restrained, and the spinning nanometer fibers are straight. Two strands of the fibers surround the yarn tail and form a cone-shaped twisting trigonum on the upper portion of a metal twisting machine, and enable the nanometer fibers to be further oriented and twisted to form yarn through electric field force, tractive force of the yarn and acting force of the metal twisting force. The spinning nanometer fiber yarn is conducted heat shaping through a heat processing device under certain tensile force, degree of orientation of the nanometer fibers along the axial direction of the yarn, breaking force and yarn levelness are further improved, and the yarn after shaped is collected by a winding bobbin. The device can achieve the aim that orientation nanometer fiber yarn can be continuously prepared, is simple in device, convenient to operate, and good in resultant yarn continuity, yarn breaking strength and yarn levelness, and not only can spin pure nanometer fiber yarn, but also can spin nanometer fibers / filament core composite yarn. The orientation nanometer fiber spinning method and the device thereof have important application value in the fields, such as a biomedical field and a sensor field.

A rivet gun includes a pneumatic motor (4), that drives a segment stem 7. A pneumatic cylinder (21) actuates a hydraulic cylinder (22) which sends oil under pressure to an expansion chamber (10) provided for moving back the segment stem (7) and buckling the rivet (2) fixing it to a laminate structure (100). The rivet gun also includes a change-over switching device (30) linked to controls (50,60) for reversing rotation of the motor (4). The controls (60) include an inlet valve (61) operated by a trigger (64) for connecting a compressed air infeed duct 14 with a feed-discharge duct (23) leading to the pneumatic cylinder (21). A discharge valve (63) is disposed in series with the inlet valve (61) and has an adjustment ring (176) for adjusting of the maximum traction force. Another discharge valve (90) is disposed in series with the discharge valve (63) previously mentioned and is provided for adjustment of the stroke of the segment stem (7).

The invention relates to an aerodynamic profile element for energy production using traction force, in particular for driving watercraft. The invention further relates to a launch and retrieval arrangement for a profile element, and a drive arrangement for a watercraft including the profile element and the launch and retrieval arrangement.

A control device for a steering kite on a boat. The steering kite can be steered by a steering device and at least two or three, preferably at least four or five, suspension lines. The control device comprises at least one force introduction rail that extends horizontally over the water line and on which a deviation device for the suspension lines is positioned in such a way that it can move back and forth. The rail is fixed to the boat between the steering kite and the steering device in such a way that the traction force of the steering kite produces torque about the longitudinal axis and / or the transverse axis of the boat in the water, by means of which the leeward side of the boat is lifted upwards.

An organ manipulator including at least one suction member or adhesive disc mounted to a compliant joint, a flexible locking arm for mounting such suction member or compliant joint, and a method for retracting and suspending an organ in a retracted position using suction (or adhesive force) so that the organ is free to move normally (e.g., to beat or undergo other limited-amplitude motion) in at least the vertical direction during both steps. In preferred embodiments, a suction member exerts suction to retract a beating heart and suspend it in a retracted position during surgery. As the retracted heart beats, the compliant joint allows it to expand and contract freely (and otherwise move naturally) at least in the vertical direction so that hemodynamic function is not compromised. The suction member conforms or can be conformed to the organ anatomy, and its inner surface is preferably smooth and lined with absorbent material to improve traction without causing trauma to the organ. The compliant joint can connect the member to an arm which is adjustably mounted to a sternal retractor or operating table. The compliant joint can be a sliding ball joint, a hinged joint, a pin sliding in a slot, a universal joint, a spring assembly, or another compliant element. In preferred embodiments, the method includes the steps of affixing a suction member to a beating heart at a position concentric with the heart's apex, and applying suction to the heart while moving the member to retract the heart such that the heart has freedom to undergo normal beating motion at least in the vertical direction during retraction.

A control system for a rail vehicle system including a lead powered unit and a remote powered unit is provided. The system includes a user interface, a master isolation module and a slave controller. The user interface is disposed in the lead powered unit and is configured to receive an isolation command to turn on or off the remote powered unit. The master isolation module is configured to receive the isolation command from the user interface and to communicate an instruction based on the isolation command. The slave controller is configured to receive the instruction from the master isolation module. The slave controller causes the remote powered unit to supply tractive force to propel the rail vehicle system when the instruction directs the slave controller to turn on the remote powered unit. The slave controller causes the remote powered unit to withhold the tractive force when the instruction directs the slave controller to turn off the remote powered unit.

A permanent-magnetic DC motor bearing similar characteristics with the constant power pulling motor, in particular a new drive control system for brushless motor adopts new technologies of full electronic drive control and DC-DC transducer. The motor can generate great drive torque, i.e. high tractive force, climbing ability and better acceleration performance with low power consumption, and eliminate the needs for improvement to the motor structure, complication, high manufacture cost or weak magnetic control; the motor may further gain such performance as high speed, wide speed regulation and infinite variable speed under light load; the total voltage of the battery and the number of single series of connection can be reduced; controllable electric brake can be realized through fully utilizing the energy feedback during sliding and braking. The new system can significantly improve the kinetic performance, safety and reliability of electric vehicles and remarkably reduce operating costs, with ideal characteristics expected in various electric vehicles powered by rechargeable battery or / and super capacitance as well as significantly expanded work scope and capacity for conventional electrically driven system.

A track assembly having first and second hub assemblies that are operatively connected to a support frame by first and second attachment members, respectively. The first and second attachment members include resilient or movable mounts that are configured so that the track assembly can be attached to vehicles whose axles or wheel flanges are misaligned or have irregular rotational movement such as runout or wobble. The attachment members may be adjustably positioned relative to the support frame to accommodate vehicles having different wheelbase lengths and axle lengths. An endless track encircles the first and second hub assemblies, and the support frame, and is drivingly engaged by one of the hub assemblies. First and second rollers, which define the longitudinal extent of the endless track, are positioned at either end of the support frame. A tensioning member, with at least one upper idler roller, positions the endless track so that it is spaced from one of the hub assemblies in a spaced relation. The track assembly increases traction and stability by providing a vehicle with an independent front suspension, a larger footprint, and a longer wheelbase. In use, each track assembly is bolted onto wheel flanges of a vehicle using existing wheel lugs and nuts.

The invention relates to an elastic tongue dorsum traction apparatus and a method for implanting the same. The elastic tongue dorsum traction apparatus and the method are used for treating patients suffering from sleep apnea-hypopnea syndromes or snoring. The elastic tongue dorsum traction apparatus comprises a tongue dorsum connecting mechanism, elastic traction bodies and tooth-side fixators. A support body of the tongue dorsum connecting mechanism is implanted under the mucosa of the tongue dorsum of a patient, and the elastic traction bodies and the tongue dorsum connecting mechanism are exposed out of the mucosa of the tongue dorsum of the patient. The tooth-side fixators are fixed to the inner sides of the teeth or the alveolar bones of the patient, one end of each elastic traction body is connected with the corresponding tooth-side fixator, and the other end of each elastic traction body is connected with the tongue dorsum connecting mechanism. The elastic tongue dorsum traction apparatus and the method have the advantages that the tooth-side fixators are used as support points, the elastic traction bodies can exert elastic tractive force on the tongue dorsum connecting mechanism, accordingly, the glossocoma tongue of the patient can be pulled up forwardly, airway stenosis and obstruction of the glossopharyngeal part of the patient can be prevented, and snoring and OSAHS (obstructive sleep apnea-hypopnea syndrome) treatment effects can be realized; an elastic traction effect is realized for the tongue dorsum connecting mechanism by the elastic traction bodies, so that movement of the tongue of the patient is unaffected while the tongue of the patient is moderately pulled up, certain swallowing and speaking functions can be kept, the airway of the glossopharyngeal part of the patient can be expanded, and the patient feels comfortable when using the elastic tongue dorsum traction apparatus.

PCT No. PCT / NO97 / 00115 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed May 5, 1997 PCT Pub. No. WO97 / 43516 PCT Pub. Date Nov. 20, 1997A slide joint for a riser between a well and a floating petroleum installation such as an oil platform includes an outer pipe and an inner pipe which are adapted to move telescopically relative to one another to compensate for changes in the distance between the sea bed and the platform. The inner pipe is connected to a piston, which piston is responsive to actuation by hydraulic pressure in order to provide tractive force on the riser. The outer diameter of the inner pipe is adapted to the diameter of the outer pipe so as to form an annulus between the pipes. The piston is fixedly connected to the inner pipe at or near the downward oriented end thereof, said annulus above the piston being subjected to hydraulic pressure. Below the piston is provided a protective sleeve, which is slidably disposed within the outer pipe.

A feed forward method for controlling the distribution of torque between the front and rear axle in a four wheel drive vehicle where the slope of a hill upon which the vehicle is traveling is calculated based on measured vehicle longitudinal acceleration and estimated longitudinal acceleration. The hill slope estimation is made and implemented before the wheels of the vehicle begin to slip due to the slope and low friction coefficient of the road surface. Under conditions of high vehicle speeds or sever vehicle turning, the change of torque distribution is not implemented because there is a lesser tendency for the vehicle to slip on the hill surface.

The invention describes a percutaneous gastrointestinal anchoring kit having an anchor, an introducer, a guide, an inflator, and a retainer. The anchor contains a ballooned region and a shaft portion. The retainer secures the anchor within the stomach when the ballooned region is inflated by seating against an exterior surface of the patient body and placing a tractive force on the ballooned region so as to pull the gastric lumen to an interior abdominal wall of the patient body. The introducer is used to insert the anchor initially within the stomach. The guide positions the ballooned region of the anchor within the stomach by enabling manipulation from an exterior surface of the patient body. The inflator is used to selectively inflate or deflate the ballooned region as needed.

In piston pumps for brake systems used until now, there were often noise problems, from pressure pulsations. In the piston pump for brake systems proposed here, a pulsation-smoothing device (40) that functions effectively well is provided in the region of the outlet valve (24). As a result, substantially less noise occurs, and the durability of the piston pump (1) is substantially better. The piston pump is used essentially in traction-controlled motor vehicle brake systems.

A vehicle that is propelled by as few as one actuator through a compliant drive train can move quickly on relatively smooth terrain and can climb obstacles. The body of the vehicle may consist of a single segment or multiple segments connected by articulating joints. The driving appendages can take different forms including legs or specialized legs with multiple spokes attached to a rotating hub. The driving appendages can be propelled by as few as one actuator. The driving appendages are each serially connected to their actuator(s) by a compliant device. The compliant devices permit relative motion between driving appendages that share the same actuator. A springably biased compliant device maintains nominal-desired phasing among driving appendages until one of them is forcibly perturbed. The phasing of the driving appendages, or gait, adapts to the terrain. Mechanical stops limit the excursion of the compliant device such that a new desirable leg phasing is reached for climbing large obstacles. The elasticity of the compliant device restores the phasing of the driving appendages to their nominal state when the perturbation is removed. Compliance in the driving appendages and feet smooth the cyclic motion of the body. Compliant feet conform to the terrain and provide improved traction. Steering mechanisms rotate the plane of action of the driving appendages.

The utility model relates to a gantry type small circulation traction system for a main cable erection of a large-span suspension bridge, which belongs to the technical field of bridge superstructure construction. Set up a cable storage area behind the A anchorage, and install a 60-ton gantry crane and a cable-laying bracket; set up a traction cable revolving wheel behind this anchorage; set up a 25-ton main traction hoist and a balance weight bracket on the side of the B anchorage. The traction cable is connected by a puller at Anchor Anchor, bypasses the hoist drum at B Anchor Anchor, and is inserted through the balance weight bracket and each steering block to form a ring-shaped endless cable. Make a horizontal circular motion to form an independent small circular traction system. The small circulation system has the advantages of high power, large traction force, high construction efficiency and low cost.