37 results about "Descender" patented technology

A combination descender, pulley, and force limiting rope brake for rope rescue has a supporting plate having a one-way pulley sheave rotatably mounted thereto for free-wheeling rotation of the sheave in only a first rotational direction. A fixed brake member is mounted rigidly to the supporting plate. A movable brake member is pivotally mounted to the supporting plate. A pinching opening is defined by the gap. The rope passes in a first direction through the gap when the sheave is free-wheeling in the first rotational direction. The movable brake member translates relative to the fixed brake member in cooperation with rotation of the sheave. Rotation-under-load of the sheave in an opposite rotational direction urges translation of the movable brake member towards the fixed brake member from an open position, wherein the pinching opening is open sufficiently to allow the rope to freely pass therethrough, to a closed position wherein the movable brake member closes the pinching opening so as to frictionally pinch the rope at a preset minimum opening of the pinching opening.

A descender comprises a base plate (20) having a point of connection (24A) to a harness and a pivoting plate (22) mounted pivotally on the base plate (20) about an axis with the pivoting plate (22) having two spaced rotating pulleys (25 and 26) for engaging a rope (39). The base plate (20) has a rotating stationary pulley (27) mounted thereon to provide opposition to rotating pulleys (25 and 26) which are mounted on the pivoting plate (22). A control handle (23) with a cam surface (41) presses against the pivoting plate (22) which increases the space between rotating pulleys (25 and 26) on the pivoting plate (22) and the stationary pulley (27) that is secured to the base plate (20), thereby relieving the clamping effect. A speed regulator (34) stops the control handle (23) from full travel, allowing less than maximum rate of descent. A door plate (21) protects the internal parts when secured closed.

A belay descender device for a rope comprising a earn mounted rotating on a fixed flange to perform locking of the rope when said rope is under tension, and a lever articulated on the cam to perform progressive unlocking of the rope with a geared-down effect at the beginning of unlocking travel of the lever. The operating lever comprises transmission means collaborating with a guide ramp of the flange to interrupt the mechanical link with the cam after an intermediate position of the lever has been passed resulting in freeing from said ramp outside the gearing-down area. The end of the guide ramp of the flange corresponds to the anti-panic position of the transmission means, enabling automatic locking of the canvas soon as the gearing-down area has been passed.

A method and system are disclosed for post optical character recognition font size determination. Optical character recognition output from an optical character recognition engine that includes character and bounding box information is aggregated into character strings. Measurements are then collected from each character in each character string that correspond to alignment heights of the top or bottom of the character with an ascender-line, a cap-line, a digit-line, a mean-line, a base-line, or a descender-line. Histograms are formed for each of these heights for each character string from the collected measurements. Based on the histograms, a pivot height is selected and used to determine the relative font size of the character string. The relative font size is normalized using a preselected factor associated with the selected pivot height. The normalized font size is then output as the font size of characters in the optical character recognition output.

The invention aims to provide a high-altitude lifesaving slow descender comprising a safety support and a hydraulic slow decender, wherein the tail end of the safety support is installed with a circular ring, and the hydraulic slow decender is connected with the safety support through the circular ring. The safety support comprises a transverse bar, a cantilever beam, a vertical bar, a support bar, a positioning sleeve barrel, a short rod, the circular ring and a stop block, and the hydraulic slow decender comprises a speed controller and a rope wheel mechanism. The invention has the advantages of simple structure, convenient operation, strong applicability to environment as well as safety and reliability.

The invention aims at providing a high-altitude self-rescue apparatus which is safe and quick, convenient to use and has low cost for high-rise residential buildings and office buildings. The high-altitude self-rescue apparatus can be used for realizing the return-rope-free bidirectional escape through reciprocating movement at both ends of a steel wire rope; and breaking can be realized only through mechanical friction so as to ensure the normal work of the high-altitude self-rescue apparatus when a building has power failure. A transmission wheel series with an eccentric moving block can guarantee that relative sliding does not happen between the steel wire rope and the main transmission wheel, namely the transmission is effective. A centrifugal braking system of the descent control device can descend both children and adults at a constant speed.

The present invention relates to a user interface for a portable power driven system, specifically in relation to an integrated user interface for controlling such an arrangement, and being applicable for example in relation to an ascender / descender arrangement. The invention also relates to a corresponding method and computer program product for operating such a portable power driven system.

A device for detecting broken hooks of knitting needles. A knitting machine has a cam, which includes a needle starting cam, a loop forming cam, and a closing edge cam. A detector has a detector rising section, wherein the second triangular surface in the off-edge triangular portion is inclined away from the second triangular surface at the looping position. A detector butt descending section is followed by a detector butt ascending section, and a concave section is followed by a butt descending section. The concave section is formed such that the second cam surface is sufficiently spaced from the first cam surface so that the butt of a needle with a broken hook is pushed into the concave section by the detector butt descending section, but without damaging the needle The needle butt does not enter the concave section of the detector. A sensor recognizes the end of a needle whose butt is located in the concave section of the detector. The device may further comprise means for stopping the operation of the knitting machine after the sensor has been triggered. A method for detecting a broken hook and a needle for use with said device are also provided.

The self-blocking descender-belay device (1) according to the invention comprises: a first lateral guide flange (6) for the rope, comprising a braking nose (4e), a second lateral guide flange (7) for the rope, which is separated from the first flange (6) by a transverse gap (8) for passage of the rope, and can be displaced between a spaced position for putting into place and removal of a rope, and a closed position in which the rope is trapped in the transverse gap (8) for passage of the rope, a cam (4d) which is engaged between the first and second flanges (6, 7) and is mobile towards and away from the braking nose (4e), and is thrust towards the braking nose (4e) by a cam return spring, the transverse gap (8) for passage of the rope extending between a rope input in the vicinity of the braking nose (4e), and a rope output opposite, the rope output having a large opening such as to permit free orientation of the rope output end between a blocking orientation in which the rope surrounds the cam (4d), and a release orientation in which the rope passes through the transverse gap (8) for passage of the rope directly, and without thrusting the cam (4d) towards the braking nose (4e).

A descender is for work at height, climbing, mountaineering, speleology or other practices using a rope. The descender device for a textile rope (F) includes a casing in which a cam mechanism (10) and an actuating lever (3) for the cam mechanism (10) are housed. The casing (2) includes a return element (13) for the rope (F). The cam mechanism (10) includes a lever pin (29) rotatably actuated by the actuation lever (3) and a movable cam (25) which is rotatably movable between a deactivation position and a locked position in which the movable cam (25) presses on the rope (F) against the return element (13). The lever pin (29) acts on a rocker member (32) which is integral with the movable cam (25) during a first rotation step of the lever pin (29) in a direction opposite to the activation direction of the movable cam (25).

A rotary high lifter and controlled descender has a main housing enclosing a ratchet spool, controlled descender, and locking pawl. An adjustable crank turns the ratchet spool and takes up rope which raises an attached feeder, nestbox, etc. The locking pawl assures that as the rope is wound, the lifter / descender automatically locks in place so that an inadvertent crank release of the crank does not cause the feeder to fall. The rope exits the main housing via an inlet nipple which protects the housing from the elements, insects, etc. To lower the feeder, actuate a cam lock to release the locking pawl, and turn the crank in the opposite direction. Releasing the cam lock can actuate a controlled descender portion of the invention. These components apply a brake-pad-like action against the ratchet spool (can also use a tension knob) to control the speed of rotation and descent.

The descender comprises a handle and a cam that are movable between a securing position and a sliding position of the rope. The cam defines a first stop and a second pin. The handle has a first pin coming into contact with the first stop to form a first mechanical link and a second stop coming into contact with the second pin. Movement of the handle results in movement of the cam between the securing and sliding positions. In a threshold position of the handle, the first mechanical link is interrupted and the cam returns to the securing position. The second stop is movable with respect to the handle by means of a spring. When movement of the handle takes place, the second pin comes into contact with the second stop before the handle stresses a spring and reaches the threshold position.

A rope self-locking descender has a first flange, a cam movable with respect to the first flange successively between a first position, a clamping position of the rope and a running position of the rope in the first flange, a handle movable with respect to the first flange successively between a stowing position, a first position of use clamping the rope and a running position of the rope. A first spring is connected to the first flange and to the handle to return the handle to the stowing position. The cam is mechanically connected to the handle in intermittent manner so that movement of the cam from the first position to its clamping position of the rope results in movement of the handle from its stowing position to the first position of use. The handle is not mechanically connected to the cam between the first position and a running position.

The self-blocking descender-belay device (1) according to the invention comprises:a first lateral guide flange (6) for the rope, comprising a braking nose (4e),a second lateral guide flange (7) for the rope, which is separated from the first flange (6) by a transverse gap (8) for passage of the rope, and can be displaced between a spaced position for putting into place and removal of a rope, and a closed position in which the rope is trapped in the transverse gap (8) for passage of the rope,a cam (4d) which is engaged between the first and second flanges (6, 7) and is mobile towards and away from the braking nose (4e), and is thrust towards the braking nose (4e) by a cam return spring,the transverse gap (8) for passage of the rope extending between a rope input in the vicinity of the braking nose (4e), and a rope output opposite,the rope output having a large opening such as to permit free orientation of the rope output end between a blocking orientation in which the rope surrounds the cam (4d), and a release orientation in which the rope passes through the transverse gap (8) for passage of the rope directly, and without thrusting the cam (4d) towards the braking nose (4e).

The invention discloses a descender aiming to solve the problem of inconvenience in use of existing descenders of 8-shaped annular type, shackle type or stick type. By the setup of a pressing-rope member which is manually controlled to slide up and down, when the pressing-rope member slides up, a rolling rope on a mandrel is squeezed, friction force of the rolling rope is increased, and a human body stops descending; and when the pressing-rope member slides down, the rolling rope is no longer squeezed, friction force of the rolling rope is decreased, and a human body descends. The descender has the advantages that the pressing-rope member on the descender is only needed to be operated manually to slide down or up in use, the human body can descend or stop descending, operation is simple, and the descender is safe and convenient.

A method and system are disclosed for post optical character recognition font size determination. Optical character recognition output from an optical character recognition engine that includes character and bounding box information is aggregated into character strings. Measurements are then collected from each character in each character string that correspond to alignment heights of the top or bottom of the character with an ascender-line, a cap-line, a digit-line, a mean-line, a base-line, or a descender-line. Histograms are formed for each of these heights for each character string from the collected measurements. Based on the histograms, a pivot height is selected and used to determine the relative font size of the character string. The relative font size is normalized using a preselected factor associated with the selected pivot height. The normalized font size is then output as the font size of characters in the optical character recognition output.

A self-braking descender having a panic function and being formed by a body including a channel through which a cord extends in both directions. One end of the body is provided with an actuation lever formed by two projecting sides, a solidly connected appendage and a friction hole through which the cord also extends, and the lever can be folded onto the body. The other end of the body is provided with a head formed by a preferably semi-circular part including two projections and a rear cam with toothing in order to increase the friction in the panic position. An assist element for controlling the sliding of the cord is also included.

A manual rope-control device mainly comprises a fixed part (1) and a hook part (2) provided on the fixed part (1). With the thumb of one hand, the hook part (2) is controlled to move, so that the hook part (2) hooks the rope (3) and tightly presses the rope (3) against the fixed part (1), and then the sliding speed of the rope is controlled, thereby avoiding the hand from hurting if the rope (3) is directly and tightly grasped. In addition, a rappelling device using the rope-control device is provided. The rappelling device is mainly formed of a suspension body (4) with a suspension hole (4.2) and a U-shaped reeving part (5) provided on the suspension body (4), and a manual rope-control device is provided below the reeving part (5). In this way, a self-lock problem and a rope-control problem of the existing suspension device are effectively solved. Moreover, since the user needs to manually and directly apply a continual pulling force on the free end of the rope during descending of the existing 8-shaped ring suspension device, the hand may hurt if the rope is grasped all the time and the pulling force is applied, it is difficult to use the suspension device, and a potential risk exists; while with the present invention, these problems are all solved.

The invention discloses a hydraulic descent control device which mainly comprises a one-way throttle valve bank, a hydraulic pump (or a hydraulic motor) and a reel component. The one-way throttle valve bank is fixedly mounted on the hydraulic pump, an upper oil port of the one-way throttle valve bank is communicated with an upper oil port of the hydraulic pump, and a lower oil port of the one-way throttle valve bank is communicated with a lower oil port of the hydraulic pump. A mounting flange of the hydraulic pump is connected with a reel frame of the reel component through a screw, an output shaft of the hydraulic pump is connected with one end of a reel through a key, and the other end of the reel is connected with a support shaft through a key. The reel frame can be connected with a fixing body through an upper fixing rope and a lug on the upper portion of the reel frame, and a rope on the reel is connected with a human body through a human body connecting rope at the lower end of the reel. The hydraulic descent control device can be used for realizing high-altitude stability and safe descent of a human body, particularly can play a great role in personnel rescue of high-rise buildings, and has a wide application prospect if serving as a fire fighting instrument.

The invention relates to a descender, and aims at solving the problems of complicated control structure and high processing and manufacturing cost existing in the drop-off line (multi-plate) descender at present. The drop-out line descender provided by the invention is characterized in that through providing a soft control rope, at the time of suspension, a work rope is under stress, drop-off rods tuck upward, friction of the work rope increases, and the human body ceases to descend; and when the soft control rope is pulled downward, the drop-off rods are released and unfolded downward, the friction of the work rope decreases, and the human body descends. The descender provided by the invention can be used as a suspension tool at the time of construction, such as building external wall cleaning and renovation, but also can serve as a suspension tool at the time of building fire protection rescue, emergency rescue or high-altitude rescue and operation, and can also be used as a special device at the time of personnel air dropping.

Disclosed is a rod-type lowering device formed of a core axle (1) and an outer sleeve (2). An outer sleeve sliding rope hole (2.3) is provided on the outer sleeve, and a rope pressure ring (2.4) is also provided on the outer sleeve. The rope pressure ring can slide up or down under the manual control of a person and when the rope pressure ring is located at the position of the sliding rope hole, a wound rope (3.2) on the core axle is squeezed, the frictional force on the wound rope becomes greater, and a person (4) will stop being lowered. When the rope pressure ring moves upwards away from the position of the sliding rope hole below, the wound rope is no longer compressed, the frictional force on the wound rope lessens and the person will be lowered. The lowering device solves the problem of current rod-type lowering devices being inconvenient to use. Not only can the lowering device serve as a suspension tool during work such as cleaning or fitting the outer walls of a building, but the device can also serve as a suspension tool during tasks such as fire-fighting and rescue from buildings, emergency response or high altitude rescue, and serve as specialized equipment for airborne landing of personnel.

The invention relates to an adjustable speed descender, comprising a left speed-adjusting handle, a right speed-adjusting handle and a main support. A handle return spring in the lower middle of the left speed-adjusting handle is fixedly connected with the lower middle of the right speed-adjusting handle. The left speed-adjusting handle and the right speed-adjusting handle are distributed symmetrically on two sides of the main support, and their middles are rotatably connected with the main support through a pin. Speed may be adjusted by holding the handles by hand, thus operating is convenient. Speed adjusting range may be determined according to hand holding force, and stepless speed adjusting may be given. The descender may be fixed safely to any aerial position through a fixing pin. The adjustable speed descender is simple in structure, convenient to carry along, low in manufacturing cost, conducive to popularization and application, and widely applicable to aerial operation, downhill, aerial escape and the like.

The invention discloses a closestool cover plate descent control device which comprises a rotating shaft, a blade and a shaft sleeve. A radial end face is formed at one end of the rotating shaft and provided with an oil groove, an oil inlet of the oil groove is large, the tail end of the oil groove is small, and a rib is convexly arranged on the rotating shaft in the axial direction. A shaft cavity is formed in the blade in the axial direction, an insertion groove is integrally convexly formed in the side wall of the shaft cavity, the shaft cavity of the blade is in sleeved connection with the rotating shaft, the rib of the rotating shaft is inserted in the insertion groove of the blade, and a plurality of oil grooves are formed in the side walls of the two sides of the insertion grooves at intervals. The shaft sleeve is in sleeved connection with the rotating shaft, and a sealed cavity is formed between the shaft sleeve and the rotating shaft and filled with damping oil. When the shaft sleeve rotates, the damping oil drives the blade to rotate relative to the rotating shaft, the rib of the rotating shaft seals the oil holes, and the damping oil flows towards the oil grooves; when the shaft sleeve rotates in the opposite direction, the damping oil drives the blade to rotate n the reverse direction relative to the rotating shaft, the rib of the rotating shaft opens the oil holes, and the damping oil passes the oil holes. The closestool cover plate descent control device has reliability in opening and closing and is simple to assemble and simple in manufacturing process.

The invention belongs to the technical field of high-rise emergency escape, and relates to a safe escape apparatus used for taking sanctuary, in particular to a descender for escaping. The descender comprises connecting plates, a pull rod and a gear; an arch piece 5 is arranged at one side at the upper part of a main connecting plate 1, and the outer side of the arch piece 5 is provided with a connecting pull rod 4 connected by an eccentric bolt 3; a first convex gear 8 and a second convex gear 10 which are meshed with each other are arranged at the other side of the main connecting plate 1 ina juxtaposed way; the first convex gear 8 and the second convex gear 10 are provided with auxiliary connecting plates 2; the first convex gear 8 is connected with a spanner 7; the second convex gear10 is provided with a through hole and is connected with the upper end of a connecting piece 11 by screws. Compared with the prior art, the descender has the remarkable characteristics of low price, simple structure, convenient and safe operation as well as being simultaneously used by a great deal of people by using one rope for escaping. The descender for escaping is applicable to emergency suchas fire in high-rise building and the like, and has better practicability and market application prospect.

The invention discloses a hydraulic descent control device, which mainly consists of a one-way throttle valve bank, a hydraulic pump and a reel assembly, wherein the one-way throttle valve bank is fixedly arranged on the hydraulic pump; the upper port of the one-way throttle valve bank is communicated with the upper port of the hydraulic pump; and the lower port of the one-way throttle valve bank is communicated with the lower port of the hydraulic pump. A mounting flange of the hydraulic pump is mutually connected with a reel rack of the reel assembly through bolts; the output shaft of the hydraulic pump is connected with one end of a reel through a key; and the other end of the reel is connected with a support shaft through a key. The reel rack can be connected with a fixed body through a lug and an upper fixed rope above the reel rack. By utilizing the hydraulic descent control device disclosed by the invention, a human body can stably and safely descend slowly. The hydraulic descent control device can perform an important action especially personnel rescue of high-rise buildings. If used as a fire-fighting apparatus, the hydraulic descent control device is wide in application prospect.

The invention discloses a rope brake descender. The descender comprises a fixed side board, a movable side board, a movable wheel disk and a control handle, wherein, the fixed side board is rotationally connected with the movable side board through a first pin shaft; a fixed wheel disk is fixedly arranged on the fixed side board at the upper part of the movable wheel disk through a second pin shaft; an arched brake swinging sheet is rotationally connected on the fixed side board at the upper part of the fixed wheel disk through a third pin shaft; a connecting arm is arranged on a connecting end of the control handle and the first pin shaft; and the end part of the connecting arm and the corresponding end of the brake swinging sheet are respectively hinged on two ends of a connecting rod so that the connecting rod drives the brake swinging sheet to rotate back and forth around the third pin shaft and meanwhile one of two ends of the brake swinging sheet abuts against the periphery of the fixed wheel disk as the control handle swings back and forth. The rope brake descender has the characteristics of reasonable design and high safety, and is practical and convenient.