88results about How to "Improved directional stability" patented technology

A golf club head includes: a hollow shell head body that defines a face portion for hitting a ball and a crown portion; and a weight-massed portion that is formed on at least crown portion, wherein the weight-massed portion extends in a face-to-back direction of the head body and has a larger mass than that of a peripheral portion of the head body.

A self-supporting, submersible generating plant for producing electricity from ocean currents, consisting of two counter-rotating, rear-facing turbines with a plurality of rotor blades extending radially outward from two separate horizontal axis that convey the kinetic energy from the two side-by-side, counter-rotating turbine rotors through separate gearboxes to separate generators that are housed in two watertight nacelles that are located sufficiently far apart to provide clearance for the turbine rotors. The two generators and their gearboxes serve as ballast and are located far below a streamlined buoyancy tank that extends fore and aft above and between them. A combination of a leverage system and a pressure-controlled system adjusts the hydrodynamic lifting forces to maintain constant depths. There are systems to purge the ballast water to facilitate the recovery of both individual submersible power plants and a group of many submersible power plants.

The invention discloses a torque distribution control method for an electric-wheel automobile hub motor torque distribution system, and belongs to the field of an electric-wheel automobile. The electric-wheel automobile hub motor torque distribution system comprises parts as follows: a driver intention module, a hub motor, a stability controller, a torque distributor, a slip rate controller, a whole automobile module, a pavement information module and a whole automobile sensor module, wherein the stability controller comprises a fine adjustment mode and a stable adjustment mode, and the torque distributor divides whole automobile movement into a dynamic mode, an economical mode and a stable mode. According to the torque distribution control method, a plurality of controlled variables such as the slip rate, attachment coefficient, yaw velocity, side slip angle, hub motor rotating speed and the like are combined to control the automobile, so that stability and dynamic performance of the automobile at the low speed or high speed are guaranteed; and the automobile torque is distributed, so that automobile drive capacity, motor utilization efficiency and whole automobile stability when the automobile is driven normally or has a slipping phenomenon are improved.

An intelligent system for real-time monitoring pressure and temp of car tyre and preventing direction deflection on trye exploding is composed of monitor box, LCD module, tyre temp alarm lamp, keyboard, buzzer, circuit board, cable, electronic element and device box, single-chip microcomputer, chips, relative circuits and device, pressure sensor, temp controlled switch, tyre cutter, antideflecting pliers, air compressor, etc. Its advantages are high effect and low cost.

An iron-type golf club head comprises a head main portion having a face for hitting a golf ball, and weight members made of metallic material having heavier specific gravity than the head main portion. The head main portion has a tubular portion provided on a heel side of the face and having a shaft inserting hole. The tubular portion is provided continuously on the lower side of the shaft inserting hole with a bottomed hole part for arranging the weight members. The weight members include a heel-side weight member disposed in the bottomed hole part.

An improved walk behind polisher and grinder is disclosed. The improved walk behind polisher and grinder provides a surface polishing machine capable of operation with increased directional stability and reduced dust accumulation to the essential internal components of the machine. The improved walk behind polisher and grinder includes a drive motor mounted on a frame. The drive motor rotates a central shaft, and the central shaft supports a belt pulley and a rotary housing. The belt pulley mechanically communicates with at least one pinion shaft through an endless drive. Each pinion shaft is mechanically engaged by an internal gear such that rotation of the central shaft causes the pinion shaft to rotate about their own axes in a given direction and to revolve around the central shaft in the opposite direction.

There is provided a gyro helicopter generally comprising a fuselage, a rotor mast extending upwardly from the top of the fuselage, a rotor adapted to autorotate when the gyro helicopter moves forward, and drive means mounted to the fuselage for driving the gyro helicopter in at least a forward direction and for causing the gyro helicopter to perform yawing motions. The rotor of the gyro helicopter includes a hub mounted to the rotor mast, at least two rotor arms extending radially from the hub, and at least two corresponding lifting blades, a leading edge of each of the lifting blades fixedly mounted to a corresponding one of the rotor arms. The rotor arms are adapted to twist in a first direction while an upward force is applied to the blades, raising the trailing edge of the blades above the plane of the rotor, and the rotor arms are adapted to twist in a second direction while a downward force is applied to the blades, the twisting in a second direction lowering the trailing edge of the blades below the plane of the rotor.

The invention is to an optionally piloted aircraft that can takeoff and land conventionally or vertically, and can convert between the two. The aircraft is immune to one or more engine failures during vertical flight through multiple engines and the use of a virtual nozzle. Aerodynamic controls are similarly redundant. Hovering flight is enabled with a novel stabilization system. Long range efficient cruise is achieved by turning off some engines in flight and sealing them into an aerodynamic fairing to achieve low drag. The resulting aircraft is capable of CTOL and VTOL, and is capable of converting between the two modes while in the air or on the ground. The aircraft can also be easily taxied on the ground in the conventional manner. Automatic controls considerably reduce the amount of training a pilot needs to fly and land the aircraft in either VTOL or CTOL mode.

The invention relates to a device for the essentially complete bridging of the gap between the car floor of a rail vehicle in the door area and the platform with a gap bridging plate (1) for bridging the gap. The gap bridging plate (1) is mounted to be movable in a linear, horizontal direction at least between a retracted position in which the gap is not bridged and the gap bridging plate (1) essentially does not or only barely projects beyond the front edge of the platform or of the rail vehicle, and an extended position in which the gap is essentially completely bridged. The device is characterized in that the gap bridging plate (1) is mounted movably on two guide rails (6, 11), and the guide rails (6, 11) are designed as ball bearing linear guides or as roller linear guides.

A golf ball having a predetermined radius, and a spherical outer surface with a multiplicity of dimples formed therein. A protrusion is formed in each of the dimples which are located in hit portions having a diameter of 5–15 mm, or alternatively, is formed in each of all the dimples. The protrusion has a distal end whose radial distance from the center of the golf ball is equal to the predetermined radius of the golf ball. The protrusion has a partition wall which divides a space in each dimple into a plurality of segmental spaces. The protrusion may have two partition walls which are perpendicular to each other and intersect at right angles for dividing a space in each of the dimples into four segmental spaces.

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

The invention provides an automobile wheel drive anti-slip control method. Based on the slippage rates of various driving wheels of a vehicle, different working ways are selected, when the slippage rates of the wheels on the two sides are different, the wheels run on a bisect adhesion road, and when the slippage rates of the wheels on the two sides are equal, the wheels run on a uniform low-adhesion road. According to one-sided slip and two-sided slip of a vehicle body, different control ways are adopted. The slippage rate is reduced by braking before torsion reduction or simultaneous torsionreduction, the vehicle body is stabilized, excess power output of an engine is reduced, the driving direction stability of a rear-drive vehicle in the acceleration process and the handling stability of a front-drive vehicle in the acceleration process are improved, the situation that drastic fluctuation of acceleration is caused by frequent regulation of an actuator cannot be caused, the gradeability of the vehicles is improved, and tyre wear, power loss and fuel consumption are reduced. An automobile anti-slip system using the method can improve the starting acceleration performance of the vehicles on the bisect adhesion road and the low-adhesion road, and further can ensure the driving comfort and the speed continuity in the starting acceleration process.

The invention belongs to the technical field of ocean engineering and relates to a free falling type ball-shaped penetrometer with a propeller. The free falling type ball-shaped penetrometer with thepropeller does not need any other loading device during measurement and can penetrate into soil of seabed by kinetic energy and gravitational potential energy for measurement, thereby being simple inoperation process. The main measurement unit of the free falling type ball-shaped penetrometer with the propeller is a ball-shaped penetrometer body at the front end, which mainly bears end bearing resistance of soil, dragging resistance and pressure of covering soil during a power penetration process; data collected by an acceleration sensor and a force sensor can be applied to inverting relevantparameters of soil body such as soil body strength and rate effect parameters; the added propeller can effectively the penetrating depth of the free falling type ball-shaped penetrometer and increasethe measurable depth range and meanwhile enhance the directional stability of the free falling type ball-shaped penetrometer during falling and avoid rotation of the free falling type ball-shaped penetrometer. By adding the force sensor and combining the measured value of the acceleration sensor, the free falling type ball-shaped penetrometer can further improve the measurement precision.

In a golf club head having a shape of a Mallet-type patter, a width of a sole face is in a range of 30 mm to 80 mm. A loft angle of the golf club head is in a range of 10° to 40°. A thickness A of a top blade satisfies a relationship:10 mm≦A≦SW−5 mm.A weight of the golf club head is in a range of 350 g to 450 g.

Described is a multiple channel interferometric surface contour measurement system. The measurement system includes a multiple channel interferometer projector, a digital camera and a processor. The projector includes two or more interferometer channels. Each channel has an optical axis spatially separate from the optical axes of the other channels. Each channel projects a fringe pattern onto the surface of an object to be measured. Image data for the fringe patterns projected on the object surface are acquired by the digital camera. The processor controls the projection of the fringe patterns of different spatial frequencies, adjusts the phase of each fringe pattern and generates surface contour data in response to the camera image data. The multiple channel interferometric surface contour measurement system provides numerous advantages over conventional single channel interferometric systems, including reduced sensitivity to optical noise, improved stability and increased measurement accuracy.

The invention relates to a self-propelled paving machine for floor coverings respectively cover layers, particularly for synthetic floor coverings respectively resilient base layers, for synthetic coverings for sports surfaces, such as jogging tracks, small playing fields, runways for long jump installations, playgrounds, screed, particularly synthetic resin screed or the like, wherein the material is distributed uniformly over a fill-in width on a prepared under-floor, and pulled off or flattened there by at least one flattening plank, wherein a storage container is provided which is connected with a fill-up area of the paving machine, and the paving machine presents a carriage, and wherein the fill-up area is provided between a rear closing-off of the carriage, viewed in the travel direction, and the flattening plank, wherein a direct delivery of the material from the storage container into the fill-up area is provided.

A control system that employs closed-loop control for providing active vehicle rear-wheel steering, where the control system receives longitudinal wheel slip inputs to improve the vehicle directional stability. The longitudinal wheel slip inputs can be from one or more of wheel speed, traction control on and automatic braking system on. The control system includes an open-loop controller for generating an open-loop steering control signal, a yaw rate feedback controller for generating a yaw rate feedback signal, and a side-slip rate controller for generating a side-slip rate feedback signal. The open-loop steering control signal, the yaw rate feedback signal and the side-slip rate feedback signal are combined to generate the steering control signal to steer the vehicle rear wheels.

The invention relates to a boring head for a ground-boring device displacing earth with a percussive action, comprising at least three boring head sections, of which the first section has a form optimized for the loosening and for guiding the device, the second section is optimized with regard to the radial displacement of the earth with low resistance to motion, and the third section has a fixed connection to the housing of the ground-boring device. Improved transmission of the advancing forces to the earth and consequently an improved advance of the ground-boring device can be achieved by at least two of the boring head sections being designed so as to be axially movable relative to one another in the longitudinal direction.

A diving toy that is comprised of a housing with a motor, battery and magnetic reed switch positioned inside the housing. A propeller is attached to an axle of the motor protruding through the rear end of the housing. A ballast is arranged inside the housing to provide positive buoyancy and a front end down attitude. A plurality of fins protrude from the housing surrounding the propeller for improving directional stability. A lever having one end rotatably mounted to the outside of the housing and another end provided with a magnet. When the toy is dropped or thrown front end first into a body of water, or when pushed in a downward motion from a submerged state, hydrodynamic forces rotate and then hold the lever and accordingly the magnet in a rearward position so long as there is downward motion, aligning the magnet adjacent to the reed switch, thereby actuating the reed switch to close a circuit between the battery and motor activating the motor, and forces generated by the spin of the propeller overcome the toys positive buoyancy propelling the toy in a continuous dive until it collides with a bottom of the body of water or another object stopping the dive, whereby gravity rotates the lever and magnet forward away from the reed switch to shut off the motor, the positive buoyant toy then floats to a surface of the body of water where it can be launched into another dive.

A vehicle with a caster (12) has a disconnectable steering system so the vehicle can be quickly and easily converted back and forth between rider-steerable and externally steerable configurations. The vehicle includes a frame (body) (20), the caster, and a steering mechanism (22, 24, 34) mounted on the frame. A disconnecting device (32) is mounted between the steering mechanism and the caster. When the disconnecting device connects the steering mechanism to the caster, the vehicle can be steered by the occupant since the steering mechanism and caster rotate as one unit. When the disconnecting device disconnects the steering mechanism from the caster, the caster is allowed to swivel freely (360 DEG ) about its vertical axis so that the vehicle can be pushed or pulled in any direction by an external operator. The vehicle may be a stroller, a toy vehicle, a scooter, a wheelchair, a cart, a dolly, etc., and it can have more than one caster.