Abstract: Certain exemplary embodiments can provide an apparatus and method for generating at least one radiation. The exemplary apparatus and/or method can selectively kill and/or affect at least one bacteria. For example, a radiation source first arrangement can be provided which is configured to generate at least one radiation having one or more wavelengths provided in a range of about 190 nanometers (nm) to about 230 nm, and at least one second arrangement can be provided which is configured to prevent the at least one radiation from having any wavelength that is outside of the range.

Abstract: Certain exemplary embodiments can provide an apparatus and method for generating at least one radiation. The exemplary apparatus and/or method can selectively kill and/or affect at least one bacteria. For example, a radiation source first arrangement can be provided which is configured to generate at least one radiation having one or more wavelengths provided in a range of about 190 nanometers (nm) to about 230 nm, and at least one second arrangement can be provided which is configured to prevent the at least one radiation from having any wavelength that is outside of the range.

Abstract: According to the present invention, disclosed is a radiotherapy apparatus for an animal, comprising: a treatment part including an accommodation space for placing an animal thereon; an irradiation part including an electron generator and a linear accelerator coupled to one side of the electron generator and placed in a direction perpendicular to the treatment part for emitting radiation toward the treatment part; and an image acquisition part, positioned at a predetermined interval with the treatment part along the direction of the emitting of radiation, for acquiring an image of an irradiation area when radiation is emitted, wherein an output of radiation is between 1 and 2 MeV so that radiation is emitted to an affected area positioned within a predetermined distance from the epidermis of the animal.

Abstract: This radiotherapy device comprises: an X-ray irradiation device and an X-ray camera for detecting the position of a specific landmark present in an irradiation target; a storage unit which, with one from among a plurality of time-lapse three-dimensional CT images including the landmark and obtained beforehand during treatment planning used as a reference images, stores the relationship between the displacement of the landmark position from that in the reference image to that in another three-dimensional CT image, and the deformation of each of the sites in the other CT image, obtained by analysis thereof; and an image processing unit, a deformation amount evaluation unit, and a display unit, that estimate the deformation of each of the sites and reproduce the estimated three-dimensional CT image, according to the position of the landmark detected and the relationship stored by the storage unit.

Abstract: The present invention relates to the field of radiation therapy and methods, software and systems for image registration. According to the present invention, methods for image registration of images of a patient comprising are provided. The method may include receiving a set of image data from the patient; selecting one or more tracking regions in the set of image data, each tracking region including a tracking point or set of tracking points; receiving sets of image data captured at different times from the patient; identifying corresponding tracking regions in the sets of image data captured at different times; estimating a displacement field describing displacement vectors for a number of points in the sets of image data including the tracking regions, each displacement vector specifying a position of a region in reference to a previous position.

Abstract: The present invention relates to the field of radiation therapy and methods, software and systems for treatment planning. A target volume of a region of a patient to be treated during a treatment of a patient in a radiation therapy unit is obtained. A first Isocenter location procedure is performed including inter alia evaluating potential isocenter locations along normal directions of the surface and respective isodistance surfaces in respective starting voxel in a direction inwards from the surface, and a second isocenter location procedure is performed including inter alia identifying a median axis of the target volume or center point of the target volume, placing isocenters at locations along the median axis, placing isocenters in the target volume based on a distance to existing isocenters and to the target surface.

Abstract: Systems and methods for treating cancer and for preventing metastasis using low intensity focused ultrasound in combination with an anti-cancer therapy are disclosed.

Abstract: Various approaches for heating a target region substantially uniformly include identifying one or more locations of one or more hot spots in the target region and/or surrounding regions of the target region during an ultrasound sonication process; computing a temporal variation to an output parameter of at least one of the transducer elements based at least in part on the identified location(s) of the hot spot(s); and operating the at least one transducer element to achieve the temporal variation of the output parameter so as to minimize the hot spot(s).

Abstract: There is disclosed a connection apparatus for connecting breathing gas delivery components of a breathing apparatus, comprising: a male connector configured to be received in a corresponding female port, the male connector comprising a perimeter wall defining an external shape of the male connector and enclosing a gas conduit. The perimeter wall comprises a distal portion defining a first cross-sectional area of the male connector, a proximal portion defining a second cross-sectional area of the male connector larger than the first cross-sectional area, and a tapered portion formed between the proximal portion and the distal portion.

Abstract: Disclosed herein are connection apparatus for connecting breathing gas delivery components of a breathing apparatus. The connection apparatus comprises a male connector configured to be received in a corresponding female port, the male connector comprising a perimeter wall defining an external shape of the male connector. In some examples, the male connector defines an insertion axis along which the male connector is receivable into a corresponding female port, and a distal edge of the perimeter wall defines a distal face of the perimeter wall and at least a portion of the distal face is inclined with respect to the insertion axis of the male connector. In some examples, the perimeter wall comprises first and second wall portions which taper together such that a first edge of the first wall portion and a first edge of the second wall portion are connected at an apex portion.

Abstract: A portable air filtration and disinfection device for a respirator system includes a casing, an inhalation filter assembly, and an exhalation filter assembly. The inhalation filter assembly includes an intake duct for receiving breathing air, an inhalation gas filter for filtering the breathing air, and an inhalation duct to provide the filtered breathing air. The exhalation filter assembly includes an exhalation duct for receiving exhaled air, an exhalation gas filter and an exhalation liquid filter for filtering and disinfecting the exhaled air, and an outlet duct for releasing the filtered and disinfected exhaled air.

Abstract: Intra-nasal filter devices and methods for their manufacture and use are disclosed. An intra-nasal filter device includes: a first stage filter proximate the septum; and a second stage filter comprising a flexible material extending upwardly from the first filter stage filter; wherein the flexible material comprises: an impedance in the range of 0.02 to 0.2 cmH2O; an effective cross-sectional area in the range of 0.2 to 2 square inches; and a plurality of radially extending geometric structures disposed along an axial length of the second stage.

Abstract: A system that allows a gel to be formed by mixing the solid precursor of the gel and water and spraying same onto surfaces is provided. The system includes: a conveyor for the added gelling agent or solid; a pair of openings on the sides of the conveyor tube; a dosing device located after the openings, which distributes the amount of solid added to the conveyor; a Venturi shut-off valve; a mains connection which allows water to enter the system when the water shut-off valve is opened; a Venturi inlet pipe which connects to the Venturi chamber through which the water passes; a Venturi outlet pipe through which the water passes with the solid; and a lance for discharging the gel produced by mixing the water and the solid.

Abstract: An air maintenance device for a dry pipe Fire Protection System (FPS) is capable of measuring an FPS piping network pressure leak rate. The air maintenance device includes a normally-open solenoid isolating it from all gas sources, and a pressure sensor in gas flow communication with the FPS piping network. An electronics module initiates a pressure leak rate measurement operation by reading the pressure sensor, and closing the solenoid, at the beginning of a predetermined duration. At the expiration of the predetermined duration at least a final pressure reading is taken, and the solenoid is opened. A FPS piping network pressure leak rate is calculated by subtracting the final pressure reading from the initial pressure reading, and dividing by the predetermined duration. If intermediate readings indicate a pressure below a threshold, the measurement is aborted and the solenoid is opened to allow the gas sources to maintain system pressure.

Abstract: A testing apparatus (11) for testing a fire sprinkler system combines components for testing both the function of a tamper switch (not shown) incorporated into local zone valve (18) and the working of a flow switch (12) that detects flow in a pipe (13). The assembly (10) also comprises a module (19) which is connected to the flow switch (12), the pump (16) and the local zone valve (18) to monitor their performance. A master controller (20) is provided for reading data from the module (19) and for instructing the module (19) to control the operation of the various components of the testing apparatus (11) connected thereto. Information received by the master controller (20) can be relayed to a building's fire alarm panel (21). In normal use, the module (19) will transmit signals to the master controller (20) to activate the fire alarm via the fire alarm panel (21) in response to monitoring of the flow switch (12) and zone valve (18).

Abstract: The present disclosure provides an experiment platform for simulating fire in an underground traffic conversion channel, including: a model body configured to simulate fire in the an underground traffic conversion channel; a burner connected to the model body and configured to generate smoke; and a smoke imaging system including laser sheet light sources and image recording devices configured to record smoke distribution images. The laser sheet light sources are in the model body, and plane laser light emitted by the laser sheet light sources is parallel to a flow direction of the smoke. The image recording devices are in one-to-one correspondence to the laser sheet light sources and are arranged outside an observation window of the model body. One laser sheet light source and one image recording device corresponding thereto each have a filter configured to filter out laser light of a same wavelength.

Abstract: Embodiments disclosed herein provide an exercise system that facilitates a varying load. During operation, the system produces a load-control pattern using a control module, and varies a load using a load-varying mechanism based on the load-control pattern, thereby facilitating varying-load during exercise for effective muscle stimulation.

Abstract: A resistance device for providing resistance. The device includes a flexible pulling element, a resilient arrangement and a transmission. The resilient arrangement has a first portion and a second portion. The second portion is resiliently movable relative to the first portion. The transmission connects the flexible pulling element to the resilient arrangement such that pulling upon the flexible pulling element moves the second portion relative to the first portion, and upon release of the flexible pulling element the resilient arrangement retracts the flexible pulling element. The transmission is a reduction arrangement such that pulling the flexible pulling element a distance moves the second portion, relative to the first portion, not more than a proportion of the distance. The proportion is not more than half.

Abstract: A frictional exercise device includes a shell body which can be attached to a substantially stationary object, for instance a door, a doorjamb or a floor, either directly or via a resistance band. A core cylinder in the shell body has an arcuate friction surface. A non-elastic strap winds partially around the core cylinder and hugs the friction surface. When said strap is pulled at one end and a resistive force is applied at the opposite end, a frictional force between the friction surface and the strap opposes a movement of the strap across said friction surface. The magnitude of the frictional force is proportional to the resistive force applied at the opposite end. The arcuate friction surface is formed with a depression and elevations adjoining the depression.

Abstract: A retractable wall mounted weightlifting bench system for that is extended outwardly from the wall when in use and retracted towards the wall when not in use. The retractable wall mounted weightlifting bench system generally includes a mounting bracket adapted to be attached to a wall, a bench pivotally connected to the mounting bracket that has an extended position and a retracted position, a first support member pivotally attached to the bench and a second support member pivotally attached to the bench. The first surface of the bench is horizontal or inclined when in the extended position to be used as a weightlifting bench. The first surface of the bench is in a substantially vertical position when in the retracted position for compact storage of the bench near the wall.

Abstract: To improve the dynamic response, a method is described for managing a physical exercise device (10) comprising an endless belt (16) to create a track on which a user (U) can walk or run, and an electric motor (30) to slide the belt. The method has the steps of controlling the driving torque applied by the electric motor (30) to the belt (16) so that the driving torque is proportional to the force component (F), or to the torque, which the user imparts on the belt (16) to advance on the belt (16).

Abstract: The present invention relates to an apparatus (100, 1001, 1002) for physical activity, comprising: a frame (101); a plurality of rollers (203, 204) rotatably connected to the frame (101); a belt (200) mounted on the plurality of rollers (203, 204) and revolving to define moving belt surfaces (201, 202) comprising: an activity belt surface (201) being configured for physical activity of at least one user (301, 701) and delimited by a side of the frame (101), and a return belt surface (202) being configured for revolving the belt (200) in a never-ending loop; the return belt surface (202) is elevated with respect to the activity belt surface (201).

Abstract: A sport balance board includes an elastic layer, a supporting plate layer, and an anti-slip layer; the elastic layer and the anti-slip layer are positioned on opposite sides of the supporting plate layer, respectively; the supporting plate layer has an upper surface and a lower surface, the lower surface is a spherical or aspherical surface. The balance board of the present disclosure adopts an ergonomic design that enables users to naturally perform various swing and rotation actions while maintaining a good balance and stability, making the actions seem effortless and comfortable.

Abstract: Provided herein are devices and methods for analysis and/or exercise of a body region of a subject. Such devices may include a guide arm supported by a support frame; a receiving surface supported by the guide arm, the receiving surface for receiving input force from the subject; and a motor assembly in communication with the guide arm, the motor assembly controlling movement of the receiving surface based on received input force. Exercise and/or analysis methods described herein may include steps of instructing the subject to apply an input force to a receiving surface; sensing the applied input force over time; and controlling movement of the receiving surface based on the received input force using a motor assembly, whereby the motor assembly moves the receiving surface in a pre-determined direction, so long as the input force remains within an allowable tolerance, until a pre-set end position is reached.

Abstract: The function of this invention is to provide exercisers with a safe and easy way to convert a legs-only exercising device, such as a stationary trainer or bicycle, with the capacity to exercise their upper and lower body muscle groups simultaneously or separately. This invention is portable and can be moved easily from one legs-only exercising device to another. Once they are mounted onto the handlebar or attachment bar of the legs-only device, it is now a full-body trainer. Exercisers mount the trainer, place their feet on the cycling pedals, place their elbows onto the elbow holders, grasp the hand grips, and now start their full body exercising activity. The degree of difficulty of their exercise trek is easily accommodated by allowing the rider to adjust the resistance for moving the forearm bars up and down for an upright bike, or back and forth for a recumbent trainer.

Abstract: A system and method for human motion detection and tracking (10) are disclosed. In one embodiment, an optical sensing instrument (16) monitors a stage (24). A memory (182) is accessible to a processor (180) and communicatively coupled to the optical sensing instrument (16). The system (10) captures a depth frame (150) from the optical sensing instrument (16). The depth frame (150) is converted into a designated depth frame format (152), which includes at each image element second coordinate values relative to the depth frame (150). Probability distribution models are applied to the designated depth frame format (152) to identify a respective plurality of body parts. The position of each of the respective plurality of body parts in the designated depth frame format (152) is calculated as is the position of each of the respective plurality of body parts in the depth frame (150).

Abstract: Provided is an exercise therapy device capable of more appropriately adjusting a load on an exercising person. An exercise therapy device (10) includes torque detection means (13) and control means (12). The torque detection means (13) is configured to detect a torque applied to a rotation portion (11). The control means (12) is configured to execute processing for changing a motion speed of the rotation portion (11) based on a force reference and the detected torque.

Abstract: Stationary exercise machine configured to execute a programmed workout with aerobic portions and lifting portions. In one embodiment, a stationary exercise machine may include an aerobic exercise element configured to be movable during execution of a programmed workout, a display, one or more processors, and memory.

Abstract: A balance board may include an upper plate having a top surface configured for a user to stand on; a base assembly configured to contact the ground; a center assembly pivotally connecting the upper plate with the base assembly; and an adjustable tilt system comprising at least a first adjustable angle stop configured to be rotated at adjustable intervals to change a maximum angle by which the upper plate may be tilted relative to the base assembly.

Abstract: A sports ball for use in baseball-type games includes a hollow, substantially spherical plastic ball that has a plurality of substantially planar, intersecting regions covering an outer surface thereof. Preferably the ball also has a weight that is substantially less than a weight of a regulation baseball, for enhancing safety in use. The sports system further includes a bat for use with the ball, or with any similar ball, preferably a plastic ball. The bat is a hollow, elongated member that has a handle portion adjacent a bottom end and a barrel portion between the handle portion and a top end. The bat further has a sheath surrounding at least a portion of the barrel portion. The sheath has a coefficient of friction higher than a coefficient of friction of a surface of the barrel portion, for imparting “traction” to a struck ball.

Abstract: The invention is that of a lacrosse ball collection apparatus fabricated from materials such as plastics, metals and fabrics. The apparatus comprises a fabric which when in its open position forms a substantially triangular horizontal surface capable of fitting inside a lacrosse goal. When lacrosse balls are shot into the goal, they collect on the fabric. The apparatus is foldable at a front joint and comprises a spout located behind the front joint and in close proximity thereto, such that the apparatus may be used to carry the balls to a collection receptacle, where they may be poured out of the spout into the receptacle for reuse. The apparatus is further foldable at two side joints such that an apical joint is foldable toward the front joint and two front member segments are foldable inward to render the apparatus in a compact, closed position suitable for storage in small spaces.

Abstract: A face of a racket includes a plurality of first longitudinal threads, a plurality of second longitudinal threads, and a plurality of transverse threads. The first longitudinal threads and the second longitudinal threads are arranged alternately from a center of the face toward outside in a width direction of the racket. A material of each first longitudinal thread is different from a material of each second longitudinal thread. A tension of the first longitudinal thread may be different from a tension of the second longitudinal thread. Preferably, a ratio (N1/N2) of a number N1 of the first longitudinal threads to a number N2 of the second longitudinal threads is greater than or equal to 2/8, but less than or equal to 8/2.

Abstract: A golf club head comprises a sole, a recessed sole port in the sole; and a rotatably adjustable sole piece adapted to be at least partially received within the sole port and comprising a central body having a plurality of contact surfaces adapted to contact the sole port and being offset from each other along a central axis extending through the central body of the sole piece. The sole piece can be positioned at least partially within the sole port at five or more rotational and axial positions with respect to the central axis, wherein at each rotational position, at least one of said contact surfaces of the central body contacts the sole port to set the axial position of the sole piece. The sole port and/or the sole piece can be generally pentagonal in shape.

Abstract: A golf club head includes a face member and a body member. The face member includes a peripheral portion that extends toward a back side. The peripheral portion includes a sole-side peripheral portion and a top-side peripheral portion. The face member is formed of a rolled material. An inner surface of the sole-side peripheral portion includes a sole inner surface inclined portion that extends toward a top direction as the sole inner surface inclined portion goes toward a back direction. The inner surface of the sole-side peripheral portion and an inner surface of the top-side peripheral portion are formed such that a first distance between them increases toward the back direction. An outer surface of the top-side peripheral portion is formed such that a second distance between the outer surface and the inner surface of the top-side peripheral portion increases toward a face direction.

Abstract: A golf club head includes a striking face with a plurality of scorelines. A first virtual vertical plane is perpendicular to the striking face and passes through a toe-wardmost extent of the scorelines, and a second virtual vertical plane is parallel to the first virtual vertical plane and passes through a heel-wardmost extent of the scorelines. A central region bounded by the first virtual vertical plane, the second virtual vertical plane, and a striking face periphery has a first average surface roughness Ra1 of between about 40 ?in and about 180 ?in. And a majority of a toe region bounded by the first vertical plane and the striking face periphery is textured to have a second average surface roughness Ra2 no less than 1.5 times Ra1.

Abstract: A golf club head that is capable improving on the inertia properties of a golf club head all while also improving the Center of Gravity (CG) location is disclosed herein. More specifically, the golf club head in accordance with the present invention achieves a relative low Moment of Inertia (MOI) about the Z-axis (MOI-Z) as well as a relatively low MOI about the Shaft-axis (MOI-SA), all combined with a high MOI about the X and Y-axis (MOI-X and MOI-Y) and maintaining a consistently and relatively low CG location measured along a direction tangent to the hosel axis along the X-Y plane (CG-B).

Abstract: A golf club head comprises a main body and a cover member. The main body is provided with a sole opening, and a receiving area formed therearound. The cover member integrally includes a crown cover and a sole cover. The sole cover has a peripheral edge portion laid on the receiving area. The sole portion is provided with a shape-changing portion which is convexed or concaved. The peripheral edge portion of the sole cover is located between the shape-changing portion and the back-side outer rim portion. The outer surface of the sole portion includes a first region A1 on the opposite side of the shape-changing portion to the back-side outer rim portion, and a second region A2 on the same side of the shape-changing portion as the back-side outer rim portion. The second region A2 includes a polished area formed from a part of the sole cover and a part of the main body which are polished.

Abstract: In a head, a center vertical cross section passing through a face center satisfies the following (a) and (b): (a) when a boundary point between an inner surface of a crown portion and an inner surface of a face portion is defined as a CF inner surface boundary point, a curvature radius of a head inner surface at the CF inner surface boundary point is 6.0 mm or greater and 10.0 mm or less, and the head thickness at the CF inner surface boundary point is 2.0 mm or greater; and (b) when a spot located 10 mm apart from the CF inner surface boundary point toward the crown side is defined as a spot C10, the head thickness reduces gradually from the CF inner surface boundary point to the spot C10, and the head thickness at the spot C10 is 1.0 mm or less.

Abstract: A golf club head includes a body having an outer surface, a recessed channel defined in the outer surface of the body, and a weight assembly. The weight assembly includes a weight at least partially disposed within the recessed channel and configured to slide therein, and a cover adapted to releasably secure the weight within the recessed channel. The cover including a first portion and a second portion. The weight assembly also including a fastener coupling the cover to the body and defining a fastener axis. The fastener engages with the first portion of the cover such that the cover is moveable along the fastener axis, and the second portion of the cover is rotatable relative to the first portion when the first portion is raised at least partially out of the recessed channel.

Abstract: A golf club head with an adjustable weight assembly that includes a pair of stacked, rotatable circular plates with through-slots and a slidable weight that can move within the slots and clamp the plates together so that they are reversibly fixed to a body portion is disclosed herein. The plates are preferably composed of a lightweight material such as composite, and are located on the sole so that the weight assembly is visible to a user. The plate and slidable weight combination and allows for an increased range of personal performance customization by way of adjustability and interchangeability without using up available discretionary mass in the golf club head.

Abstract: A golf club head that is capable improving on the inertia properties of a golf club head all while also improving the Center of Gravity (CG) location is disclosed herein. More specifically, the golf club head in accordance with the present invention achieves a relative low Moment of Inertia (MOI) about the Z-axis (MOI-Z) as well as a relatively low MOI about the Shaft-axis (MOI-SA), all combined with a high MOI about the X and Y-axis (MOI-X and MOI-Y) and maintaining a consistently and relatively low CG location measured along a direction tangent to the hosel axis along the X-Y plane (CG-B).

Abstract: [Problem] To provide a golf club grip having excellent anti-slipping performance, and feeling when the grip is wet, and further to provide a golf club grip having excellent durability and an improved head speed. [Solution] The golf club grip comprises a cylindrical portion for inserting a shaft, wherein the golf club grip has a narrow groove region comprising narrow grooves in an occupation ratio of 35% or more per 25 mm2 at at least a part of a surface of the cylindrical portion, and the narrow groove has a width (w) of from 0.1 mm to 0.7 mm and a depth (h) of from 0.1 mm to 1.0 mm. In addition, an interval (d) between the narrow grooves are preferably 1.5 mm or less.

Abstract: A spiked ball marker connected to a rotating alignment component is provided. The ball marker is designed to prevent rule violations for compromising the golf ball location on the putting surface when marked. The alignment component is adjustable and moves while the connected spiked ball marker is not allowed to move at all. The spikes of the spiked ball marker penetrate the ground to prevent the ball marker from moving as the alignment component is adjusted. The alignment component provides a golfer the option of adjustment by use of a putter in order to gain visual perspective of the putting surface terrain while in the act of adjusting the alignment component for the purpose of enhancing the accuracy of aiming towards a desired trajectory at the golf hole.

Abstract: A ball bat includes an outer shell and an insert positioned in a ball striking area of the outer shell. The insert may include a tube element and one or more spacer elements positioned to form a gap between the tube element and the outer shell along at least a portion of a length of the tube element. In some embodiments, the insert or the gap may extend along only the length of the ball striking area. The outer shell may provide some compliance during a hit to create a trampoline effect, while the insert may provide a backstop to limit radial deflection of the outer shell.

Abstract: A system and methods of fitting golf clubs, and more particularly, the systems and methods related to wedge type golf clubs, having multiple sole configurations and/or bounce angles. More specifically, the present invention is directed to system and methods that enable a player to quantify the performance of the golf club's sole interaction with the ground and to determine the sole configuration and bounce angle that provides the most optimal shot performance.

Abstract: A waist belt having at least two rectangular blocks secured thereon, wherein the blocks are removeable and adjustable in height and width, and wherein the blocks are of sufficient length and width to keep the wearer's arms and back in the correct fighting position.

Abstract: A self-propelled waterborne wave riding system includes a vessel having at least one motor and control system for navigating and propelling the vessel along a body of water. A rider section is located along the top of the vessel and includes a lower platform at the front of the vessel, an upper platform at the back of the vessel, and an elongated angled ride surface that extends between the upper and lower platforms. A pump system is provided along the vessel and includes an impeller assembly that is mechanically coupled to an inboard motor and a water pipe. Water received by the impeller is directed through the water pipe to a horizontally oriented nozzle in the lower platform which pushes the water over the ride surface. Openings in the upper platform return the used water into the body of water.

Abstract: A system for illustrating the flight of a sports ball includes a radar, an imager, and a controller. The imager is configured to image a moving sports ball. The controller is configured to (i) receive, from the imager, an image including the moving sports ball, (ii) receive, from the radar, radar data associated with the moving sports ball, (iii) determine, from the radar data, a portion of a trajectory of the moving sports ball, (iv) alter the image to illustrate the portion of the trajectory relative to the moving sports ball, and (v) output the altered image.

Abstract: A portable magnification angle adjuster for golf putting is proposed. More particularly, in the portable magnification angle adjuster for golf putting, the decrease of the beauty and portability of the magnification angle adjuster due to the protruding of the knob from the casing during the rotation of a knob for the rectilinear movement of a rotation weight is prevented, and the range of the engagement of threads formed to move the rotation weight is limited such that the moving distance of the rotation weight is limited. To this end, the portable magnification angle adjuster includes: a casing; an indication hand; a knob; and a dial; and a rotation weight.

Abstract: A ball return system for returning balls shot at a target to a user of the ball return system includes an ejector adapted to accelerate balls out of the ball return system toward a target destination. The ball return system also includes a mast disposed on a base on which the ejector is disposed. The ball return system further includes a collapsible net support adapted to transition between a collapsed state and an expanded state. The collapsible net support is connected to the mast by a joint that enables the collapsible net support to transition between: a first orientation in which a length of the collapsible net support is aligned with a length of the mast, and a second orientation in which the collapsible support net is stacked on top of the ejector.