84 results about "Forward angle" patented technology

A contoured seat generally includes a seat surface for supporting the thighs and buttocks of a sitter and a back surface for supporting the lower back of a sitter. Defined by the seat surface are a pair of bilateral, spaced protrusions that are positioned to extend into piriformis musculature of the sitter. Preferably, the seat surface is inclined at a 5° to 15°, and more preferably a 7.5°, angle to induce forward pelvic tilt in conjunction with lower lumbar support of a forward angle of the back surface. The seat and back surfaces may define a sacral-coccyx pocket that has a depth that varies, along its proximal-distal path to allow for sacral stabilization. The sacral-coccyx pocket preferably is relatively narrow and deep proximally and flares as it extends in the distal direction. A reinforcing ridge may extend across a top edge of the sacral-coccyx pocket to provide additional support.

A storage device for compactly storing elongate tools includes a plurality of receptacles arranged in a support in at least front and rear substantially linear rows. Each receptacle includes at least a lower receiving port and an upper receiving aperture in which a tool can be held when disposed through the upper receiving aperture and into the lower receiving port. The receptacles of the front row are forwardly splayed at a forward angle with respect to vertical greater than the receptacles of the rear row. The receptacles within each row are laterally splayed with respect to vertical, with receptacles within each row being oriented at progressively increasing lateral angles with respect to vertical from receptacles at a center to receptacles at lateral ends of each row.

Disclosed is an axial flow fan capable of achieving reduction of noise while having a high blowing efficiency compared to the power consumption of a motor adapted to drive the axial flow fan. The axial flow fan includes a hub, and a plurality of blades extending radially around the hub. Each blade has a sweep angle varying gradually from a backward angle at a root of the blade connected to the hub to a forward angle at a tip of the blade, while having a flow dispersion region having a plurality of regions where the sweep angle is alternately changed, at a region defined between a backward sweep angle region at the root of the blade and a forward sweep angle region at the tip of the blade. Each blade has a longitudinal cross section curved to have a wave structure between the root of the blade and the tip of the blade. The axial flow fan may further include a fan band connecting tips of the blades. The axial flow fan achieves reduction of blowing noise by receiving air in a dispersed state at the leading edge of each blade, discharging air in a dispersed state at the trailing edge of each blade, and offsetting turbulent flows of air by virtue of the wave-shaped longitudinal cross-sectional structure of each blade.

A walk-in apparatus of a vehicle seat slide includes an upper rail and a lower rail, a lock plate for locking the upper rail position on the lower rail, a release lever engaging with the lock plate for releasing the locking, a supporting lever engaging the release lever, a reclining plate rotating when the seat back rotates more than a predetermined forward angle, a memory plate on the lower rail within a predetermined range, a first supporting portion on the supporting lever for holding the release lever at a first position where the lock plate unlocks when the supporting lever is out of the memory plate range and a second supporting portion provided on the supporting lever for holding the release lever at a second position and waiting for the upper rail to be locked when the reclining plate disengages with the seat back.

The invention relates to a power below-knee prosthesis-based gait recognition method. The method comprises the following steps that: 1) a sensor is arranged at a corresponding position of a power below-knee prosthesis; 2) when H is equal to 1, and simultaneously FH is greater than FPH and the derivative of theta ankle is less than 0, an ankle joint enters a passive plantar flexion stage; 3) when T is equal to 1, the passive plantar flexion stage is finished; the ankle joint enters a passive dorsiflexion stage, and simultaneously the ankle joint rotates forwards until the ankle joint reaches amaximal forward angle or H is equal to 0; 4) when H is equal to 0, Tankle is greater than tau pp, and the derivative of the theta ankle is less than 0, the ankle joint enters an active plantar flexion stage; 5) when theta toe is less than 0, a toe joint enters an active dorsiflexion stage; 6) when FT is greater than FPT, the toe joint enters the active plantar flexion stage and simultaneously thetoe joint starts to rotate downwards; and 7) when the ankle joint and the toe joint reach a specified angle or T is equal to 0, the active plantar flexion stage is finished, and a foot leaves the ground to enter a swinging stage; and in the swinging stage, the ankle joint and the toe joint recover to a balance state respectively. The invention provides a new gait recognition method in which a power ankle joint and a power toe joint are involved at the same time.

A lever protects against inadvertent release of a magazine of a firearm if its ambidextrous release is hit by equipment when the firearm is carried. The lever is made from a projection, above the pivot point, having two opposing angles forward of the depression surface. The projection impacts the equipment before the depression surface is impacted (straight-on impact), which protects the assembly from inadvertent release of the magazine. An impact to the rear angle of the projection (a rear impact) increases the engagement of the lever with the magazine. An impact along the forward angle (from the front or straight-on) of the projection also serves to increase engagement of the lever with the magazine. The lever, with its projection having opposing angles, is specifically designed to protect the lever of an ambidextrous magazine catch from inadvertent release by impact / snag in the field.

A muzzle brake with reduced blast overpressure may include a body having a top, a bottom, and an attachment hub. Vanes may extend from the top to the bottom. A first vane may be located at a front of the bore in the attachment hub. The first vane may have a forward-angled internal surface. A second vane may be located axially forward of the first vane. The second vane may have a forward-angled rear surface and a forward-angled front surface. A third vane may be located axially forward of the second vane. The third vane may have a rearward-angled rear surface. The forward-angled internal surface of the first vane may include an inner surface adjacent the bore and an outer surface adjacent the inner surface. The inner and outer surfaces may be angled differently with respect to the longitudinal axis.

A handling device packs wood chips with a density greater than that achieved using conventional free-fall techniques by ≧20%-35%. The device includes a drum rotating about a generally horizontal axis that includes a plurality of outwardly extending blades that act to fling the wood chips so as to land with a substantially uniform orientation. The blades may comprise a leading face with at least a first face section that extends in a first direction and at least a second face section extending at a forward angle relative to the first section. The first direction may be generally normal to the drum core's peripheral surface. The output from the drum, when an input stream of wood chips is fed to the drum, covers an arc of at least 90°, typically in the range of 90°-120° and generally downwardly facing, when viewed from the side along the axis.

An auger for vertical mixers includes a forward angled leading edge. The leading edge includes an inner portion, which may or may not be aligned with a radial line extending from the axis of rotation of the auger. The leading edge also includes an outer portion adjacent to the inner portion, which is angled forward of the radial line and extends forward of the inner portion.

A lever protects against inadvertent release of a magazine of a firearm if its ambidextrous release is hit by equipment when the firearm is carried. The lever is made from a projection, above the pivot point, having two opposing angles forward of the depression surface. The projection impacts the equipment before the depression surface is impacted (straight-on impact), which protects the assembly from inadvertent release of the magazine. An impact to the rear angle of the projection (a rear impact) increases the engagement of the lever with the magazine. An impact along the forward angle (from the front or straight-on) of the projection also serves to increase engagement of the lever with the magazine. The lever, with its projection having opposing angles, is specifically designed to protect the lever of an ambidextrous magazine catch from inadvertent release by impact / snag in the field.

The present application relates to a multielectrode gas-shielded arc welding method in which a filler wire is inserted between leading and trailing electrodes, a distance between the electrodes is 20 to 30 mm. Variables L, T, F, X, Y, alpha, beta, gamma and satisfy the following expressions: 40 DEG <= L<= 60 DEG, 40 DEG <= T <= 60 DEG, X + 5 DEG <= F <= X + 20 DEG or Y - 20 DEG <= F <= Y - 5 DEG, 4 DEG <= alpha <= 14 DEG, 5 DEG <= beta <= 15 DEG, - 5 DEG <= gamma <= 5 DEG, where X represents the larger one of a leading-electrode horizontal angle L and a trailing-electrode horizontal angle T, Y represents the smaller one of the angles, F represents a filler-wire torch angle, alpha represents a leading-electrode backward angle, beta represents a trailing-electrode forward angle, gamma represents a filler-wire torch forward or backward angle. A target position of the filler wire is within a range between a lower end of the vertical plate and a position at a height of (upper leg length - 2 mm) from the lower end. According to the method, the shape of the welding bead can be remarkably improved, the arc noise between the leading and trailing electrodes can be reduced, and the equipment is easy.

A device for measuring near forward scatter caused by particulate matter in a fluid is disclosed. The device comprises, according to various embodiments, a transceiver and a reflector. The transceiver includes a light source and a detector. The reflector is positioned opposite the transceiver so that at least a portion of the fluid is present between the transceiver and the reflector. The reflector includes a front portion facing the transceiver. Optical energy from the light source incident upon the reflector is reflected towards the transceiver as a return beam of optical energy, wherein the detector senses primarily optical energy of the return beam that is scattered over a range of near forward angles by particulate matter in the fluid.

A deflector panel or series of such panels are temporarily attached above the containment plate of a grain sweep auger to redirect potentially avalanching grain forward to the auger blade. A front side hook structure holds a predetermined portion of the deflector panel over the top of the containment plate at a forward angle. A rear side clamp on a sliding junction secures the forward angle and adapts the shield to fit auger assemblies with differing distance relationships between the containment plate and stiffening tube. A longitudinal series of deflector panels with interpanel gaps are attached to a sweep auger assembly along the length of the containment plate. A gap-filling bracket closes the gaps and supports the panels in longitudinal alignment.

The invention relates to the technical field of aerodynamic configuration design of aircrafts, in particular to an aerodynamic configuration of an aircraft. The aerodynamic configuration of the aircraft comprises an aircraft body (3), outer wing sections (1) and inner wing sections, and is characterized in that the surfaces of the outer wing sections (1) and the inner wing sections (2) are laminar flow airfoils; the inner wing sections (2) are wing-body transition sections, adopt back-swept wings with a moderate sweep back angle and a small span-chord ratio and are connected with the aircraft body; the wings and the aircraft body are fused together; and the outer wing sections (1) adopt forward-swept wings with a moderate sweep forward angle and a moderate span-chord ratio. Due to the aerodynamic configuration of the aircraft, not only can the requirement on high-altitude long-endurance high-subsonic-speed cruise of the aircraft be satisfied, but also the flight speed is improved and the problem of trimming difficulty is solved.

The invention discloses a radar analog data merging method for navigation simulator simulation. The method comprises the following steps that nautical charts with different measuring scales are screened according to navigation purposes of the nautical charts and the distances between the nautical charts and reference points; radar analog data are cut; the cut nautical charts are ranked according to two principles; redundant data of an overlapping region of every two adjacent nautical charts are screened in sequence; a gap in a merged polygon is filled so as to form a rectangle, and a new mapsheet is constructed; edge matching is conducted on shorelines, from the nautical charts with the different measuring scales, in merged radar analog data. According to the method, due to the fact that the nautical charts involved during navigation are screened according to the reference points of navigational areas and the navigation purposes of the nautical charts, the quantity of the radar analog data is greatly reduced under the premise that the accuracy of the radar analog data is guaranteed. Due to the fact that characteristic rules of forward angles in the radar analog data are worked out, the shorelines and boundaries generated due to chart subdivision are distinguished accordingly, and influences, caused by chart subdivision making, on the accuracy of the radar analog data are eliminated.

The invention relates to a method for measuring grain diameter by utilizing binocular vision matching and particle picture gray scale difference, pertaining to the technical field of optical grain diameter measurement. According to the characteristic that different forward angle scattered lights have light intensity differences and by utilizing a digital particle image velocimetry (DPIV) imaging system provided with dual-cameras, the method obtains two particle pictures with gray scale difference, the flow fields of which are formed by single exposure; after the particle pictures are pre-treated by an image processing technique, the mating of a same particle corresponding to two particle image points on the two particle pictures is realized according to a binocular vision matching principle; the grain diameter of the particle is obtained by substituting the gray scale value summation of the two particle image points into a grain diameter solving formula, thus obtaining the particle size information of the whole flow field; the method has the reduced requirement to the light intensity and the stability of laser and the particle mating method is simple and convenient, thus reducing the influence of system errors, the digital graphic processing technique and laser diffraction on the measurement result of the particle size, overcoming the deficiencies and defects in the prior art and having substantial characteristics and prominent advancement.

The invention discloses a smoke suction pipe connecting structure and a smoke suction electrotome. The smoke suction pipe connecting structure comprises a smoke suction pipe, a locking ring slot, an elastic eccentric sleeve and a projection part, wherein the smoke suction pipe is inserted into a housing handle of the electrotome, the locking ring slot is arranged in the outer circumference of the smoke suction pipe, the elastic eccentric sleeve is arranged in the locking ring slot, and the projection part is arranged on the locking ring slot and matched with the elastic eccentric sleeve. When the smoke suction pipe in the housing handle of the electrotome forwardly rotates by a preset forward angle, the projection part and the elastic eccentric sleeve are matched, so that the smoke suction pipe is radially and axially locked with the housing handle of the electrotome; when the smoke suction pipe in the housing handle of the electrotome reversely rotates by a preset reverse angle, the projection part and the elastic eccentric sleeve are matched so as to unlock the radial and axial locking of the smoke suction pipe and the housing handle of the electrotome. The smoke suction pipe connecting structure and the smoke suction electrotome have the advantages of simple structure, convenience in operation and convenience in replacement and adjustment.

A device for measuring near forward scatter caused by particulate matter in a fluid is disclosed. The device comprises, according to various embodiments, a transceiver and a reflector. The transceiver includes a light source and a detector. The reflector is positioned opposite the transceiver so that at least a portion of the fluid is present between the transceiver and the reflector. The reflector includes a front portion facing the transceiver. Optical energy from the light source incident upon the reflector is reflected towards the transceiver as a return beam of optical energy, wherein the detector senses primarily optical energy of the return beam that is scattered over a range of near forward angles by particulate matter in the fluid.

The present disclosure provides a method for controlling an exoskeleton robot. The method comprises checking that a first signal is triggered by a first button, checking a tilt angle after the first signal is triggered, setting an action based on the tilt angle, and executing the action to move the exoskeleton robot. The first signal indicates to change the exoskeleton robot from a standing posture to another posture, and the tilt angle is a leaning-forward angle of a waist assembly of the exoskeleton robot relative to a line vertical to ground. The method utilizes the tilt angle to judge the intent of the user, and thus can simplify the controlling buttons to one or two buttons. Further, the controlling method also monitors the tilt angle to choose a suitable action.

The invention discloses a novel large-lift-force vertical take-off and landing aircraft. The aircraft comprises an aircraft body and main wings arranged on the two sides of an aircraft tail of the aircraft body. Each main wing is jointly formed by an inside main wing body and an outside main wing body. Each inside main wing body is a sweep-forward wing, and a sweep-forward angle ranges from 10 degrees to 75 degrees. Two vertical tails are arranged above the aircraft tail of the aircraft body. Canards are arranged on the two sides of an aircraft head of the aircraft body. A rotor wing is arranged above the aircraft body. A power device is arranged between each inside main wing body and the corresponding outside main wing body. An undercarriage is arranged at the lower portion of the aircraft body. By the adoption of the novel large-lift-force vertical take-off and landing aircraft, the flight properties of vertical take-off and landing, the high speed, the long navigation time and the large voyage are considered, the characteristic of a large task load is achieved, and the lift-drag characteristic in the high-speed flight process and the propelling efficiency of a power system are higher than those of a helicopter and those of a tilt rotor, a flight envelope is wider; and meanwhile decoupling is controlled through lift force and horizontal thrust, so that the aircraft is in transition from a low-speed flight state to a high-speed cruising state stably.

The various embodiments disclosed herein utilize multiple lasers that have different wavelengths and a single detection path. The lasers are mounted orthogonal to one another so that one laser will provide a forward angle light scatter (FALS) signal in the detection path, and one laser will provide a side scatter signal in the detection path (i.e., the single detection optics are approximately in-line with the FALS laser and approximately orthogonal to the side scatter laser). The single detector path spectrally separates the forward and side scatter signals prior to applying them to their respective detectors for measurement.

The invention discloses a built-in inversion-stopping self-locking device of an angle adjuster, comprising a clinching spring (1), an internal spline shaft (2), a cuneatic arch (3), an internal toothed plate (4) and a tension spring (03). The invention adopts the following technical scheme: the clinching spring is arranged on the outer wall of a central axle of the internal toothed plate; the principle that the diameter of the clinching spring is expanded when the clinching spring is stressed opposite to the winding direction and the diameter is contracted when the clinching spring is stressed in the winding direction is adopted; when a convex plate of the internal spline shaft touches a horizontal arm of the clinching spring in the forward angle of the clinching spring, the clinching spring loosens the outer wall of the central axle, and when the cuneatic arch touches the horizontal arm of the clinching spring in the backward angle of the clinching spring, the clinching spring enclasps and locks the outer wall of the central axle, thus overcoming the defects of complex structure, high cost and extra occupation of the inside space in the prior art. The built-in inversion-stopping self-locking device ensures inversion-stopping self-locking of the angle adjuster to achieve the aims of simple and reliable structure, low cost and no extra occupation of the inside space.

A process of roasting magnesite is characterized in taking mineral particles with the size smaller than 10mm as the raw material, experiencing three steps of preheating, roasting and cooling by automatic subsidence of the mineral particles in the upright roaster oven, the preheating temperature is 450í½500degree C, the roasting temperature is 700í‚50degree C, then CO2 is produced. The special device of the process is an upright roaster oven for heating magnesite which could recycle CO2. In the preheating zone of the kiln there have angle irons with forward angles, which are horizontally arranged in rows, a dust catcher is on the top layer. In the decomposition zone, firerooms and material rooms are arranged alternately, there have stock guides in material rooms, a discharging flashboard or a discharging machine or an air channel is at the bottom of the cooling zone. There have flashboards at the bottom and the discharge gate in the same level.

A motor includes inner-peripheral and outer-peripheral rotors which rotate coaxially and have permanent magnets along a circumference of each rotor; and a phase varying device for relatively rotating the rotors so as to vary a relative phase therebetween. The device has a forward-angle working chamber for relatively rotating the inner-peripheral rotor forward with respect to the outer-peripheral rotor, by using pressure of supplied working fluid; a backward-angle working chamber for relatively rotating the inner-peripheral rotor backward with respect to the outer-peripheral rotor, by using pressure of supplied working fluid; a passage switching valve for performing distribution with respect to supply and drainage of the working fluid between the working chambers in accordance with the position of a spur; and an electromagnetic pressure control valve for controlling pressure of the working fluid, and for controlling the position of the spur in the passage switching valve based on the controlled pressure.

A handheld fluid container shaped and configured so that the majority of the fluid volume is carried near the rear of the container where the container is held and supported. In various embodiments, the containers have handle parts and / or handle openings that allow the containers to be manually supported from the rear of the containers. The container bodies also have forward angled front and rear walls and container bottoms shaped so that the majority of the interior volume of the container is located at the rear of the container rather than at the front. The center of gravity of the containers when partially or fully filled with fluid is located near the rear of the container where it is manually supported by the user.