Abstract: In certain embodiments novel sparse orthogonal collimators (SOCs) for use in radiotherapy are provided. In certain embodiments the SOCs comprise 2 layer 4 bank orthogonal collimators with 2-8 leaves in each of the 4 banks. Instead of using the limited heuristic approach to create jaw-only IMRT, a novel fluence map optimization method is provided based on wavelet decomposition and this method is used for IMRT. An algorithm to simplify the fluence maps with minimal and predictable dose quality compromise is also provided.

Abstract: Provided is a collimator including a base unit configured to form a radiation path of light; a pair of first moving members rotatably installed in the base unit; a pair of second moving members movably installed in the base unit; and an actuator configured to externally receive power and transmit the power to the first moving members and the second moving members, wherein a first space may be formed between the first moving members, a second space may be formed between the second moving members, and the light may pass through a radiation area corresponding to an overlapping area of the first space and the second space.

Abstract: The present invention provides electron beam therapies with improved feedback control that delivers controlled and adjustable doses of electron beam radiation to variable shallow depths with little radiation exposure to both nearby tissues and tissues below the target. In order to control radiation to accurately penetrate to shallow depths and to allow the radiation to be adjusted to other depth settings in very small or even continuous increments, the present invention senses a plurality of different electron beam characteristics and then uses these to derive a composite characteristic, or analog, of the electron beam energy. The composite analog provides a strong correlation to energy that allows this precision. In another aspect, the present invention relates to implementing this feedback control by adjusting power levels used to establish the electron beam.

Abstract: The present disclosure discloses a boron neutron capture therapy system comprising: a boron neutron capture therapy device and an ?-amino acid-like boron trifluoride compound having a structure shown as formula (I) below: Wherein: R is selected from hydrogen, methyl, isopropyl, 1-methylpropyl, 2-methylpropyl, hydroxymethyl, 1-hydroxyethyl, benzyl or hydroxybenzyl; M is H or metal atom. The energy generated from the action of the neutron beam generated by the boron neutron capture therapy device on the ?-amino acid-like boron trifluoride compound destroys tumor cell DNA. In another aspect, the present disclosure discloses a use of an ?-amino acid-like boron trifluoride compound in the preparation of a medicament for tumor therapy.

Abstract: Described herein are methods for monitoring the radiation delivery during a radiotherapy delivery session and providing a graphical representation of radiation delivery to an operator (e.g., a clinician, a medical physicist, a radiation therapy technologist). The graphics are updated in real-time, as radiation data is collected by the radiotherapy system, and in some variations, can be updated every 15 minutes or less. A variety of graphical representations (“graphics”) can be used to indicate the status of radiation delivery relative to the planned radiation delivery. Methods optionally include calculating a range of acceptable metric values, generating graphics that represent the range of acceptable metrics values, and generating a graphic that depicts the real-time values of those metrics overlaid with the range of acceptable metrics values.

Abstract: An apparatus for applying an electron beam to a subdermal tumor generates a pulsed electron beam that is collimated to a diameter of less than 1 mm and less than 10 millimeter-milliradiant transverse emittance. A biopsy needle having an interior diameter less than 2 mm and length between 1 cm and 100 cm is inserted through the skin to the tumor, and the electron beam is electromagnetically directed through the needle, so as to reach the tumor without irradiating intervening normal tissue and with minimal irradiation of surrounding normal tissue. The electron pulsing rate can be in the S-band or Q-band, the beam energy can be between 1 Mev and 6 MeV, and/or the beam brightness can be less than 10 mm·mrad. A distal end of the biopsy needle can include an electron-permeable vacuum barrier, and the apparatus can be evacuated to less than 10?8 Torr.

Abstract: A method for calibrating an alignment device includes obtaining one or more projection images of a phantom having one or more surface indicators, the one or more surface indicators indicating a first coordinate system relating to the phantom, an origin of the first coordinate system overlapping with a calibration point of the phantom. The method further includes determining a difference between the first coordinate system and a second coordinate system based on the one or more projection images, the second coordinate system being relating to a medical system. The method further includes adjusting the phantom to an updated state according to the difference between the first coordinate system and the second coordinate system such that the first coordinate system overlaps with the second coordinate system. The method also includes adjusting an alignment device according to the one or more surface indicators in the updated state.

Abstract: An intraluminal ultrasound device includes a flexible elongate member configured to be inserted into a lumen of a patient, the flexible elongate member comprising a proximal portion and a distal portion, an ultrasound imaging assembly disposed at the distal portion of the flexible elongate member, the ultrasound imaging assembly configured to obtain imaging data while positioned within the lumen of the patient; and a radiating member disposed at the distal portion of the flexible elongate member and in communication with an ultrasound transducer positioned outside of the patient, wherein the radiating member configured to transmit ultrasound energy from the ultrasound transducer within the lumen of the patient to apply an ultrasound therapy. Associated devices, systems and methods are also provided.

Abstract: An ultrasonic oscillator retains transducers on a deformable concave portion, the transducers move in conformity with deforming of the concave portion, and the controller comprises receiver that receives sensing signals output from the sensing side transducers which sensed the ultrasonic waves oscillated from the oscillation side transducers, a distance calculation unit that calculates the distance between the oscillation side transducer and the sensing side transducer based on propagation time of the direct wave, an angle calculation unit that calculates a visual angle between a center axis of oscillation and the sensing side transducer viewed from the oscillation side transducer based on the sensing signal related to the direct wave, and a correction unit that corrects position information indicating a relative positional relationship between the plurality of transducers by using the distance and the visual angle.

Abstract: Disclosed herein is a topical composition that contains (a) a plant meristem conditioned nutrient medium derived from the plants of the genus Oryza; (b) a preservative present at an amount sufficient to provide sterilizing or biostatic efficacy with respect to component (a); and (c) a dermatologically acceptable vehicle. When topically applied to mammalian cells, the composition of the invention can influence the epigenetic methylation of the DNA such that the methylation state is modulated to have more characteristics and patterns of the epigenetic state of younger cells.

Abstract: A fireproof ascending/descending mobile apparatus includes a fireproof-material enclosure carrier device, a fireproof-material support device, a drive device, an uninterruptible power system, and a position controller. The drive device drives the fireproof-material enclosure carrier device to move on the fireproof-material support device and is arranged in the fireproof-material enclosure carrier device. The uninterruptible power system is electrically connected with the drive device and is arranged in the fireproof-material enclosure carrier device. The position controller is connected with the drive device to control a position of the fireproof-material enclosure carrier device and is arranged in the fireproof-material enclosure carrier device.

Abstract: An emergency escape system is provided. The system comprises a quick release safety pin, a manual release box configured with a metal jacket that contains the pin, and a swing arm attached via a rod to a locking mechanism, the swing arm held immobile by the pin. Upon release of the pin, the arm is configured to move in a horizontal direction and cause the rod to pull and release the locking mechanism from an engaged position. The locking mechanism, when in engaged position, securely maintains at least one of a window, a door, and a panel. The safety pin, the metal jacket, and the swing arm are positioned on an outward facing surface of the manual release box. A load spring surrounding the rod is manipulated by action of the swing arm and causes release of the locking mechanism.

Abstract: A smart fall arrest system (30) is provided and includes a fall arrest device (32) and an intelligent module (34) fixed to the fall arrest device (32). The intelligent module includes a range finder (42), a user alert device (44), a processor (46) and an accelerometer module (50). The processor (46) is configured to determine a vertical clearance distance underlying a worksite based on signals from the range finder (42) and the accelerometer module (50), the processor determines if the fall arrest device (32) is appropriate and if the anchor point selected for connecting the fall arrest device (32) is at an appropriate height.

Abstract: A safety harness comprises shoulder straps, a waist strap, and a weight distribution assembly interconnecting the shoulder straps and the waist strap. The weight distribution assembly is configured and arranged to transfer a load from proximate the shoulder straps to proximate the waist strap.

Abstract: A frame, one or more wheels rotationally attached to the frame, two or more end feet attached to opposite ends of the frame, one or more end safety tether attachments, and a flip-pole attachment. The frame straddles the roof peak so the end feet are stably positioned on opposite roof surfaces. The wheels enable the device, when flipped to its inverted position, to be rolled up and down the roof for installation and removal. The flip-pole attachment enables attachment of a flip pole for use in installing and removing the device from a ladder. And the end tether attachments enable workers to couple their safety tethers to the secured device so that if they fall their fall will be arrested for safety. Typical embodiments include an outrigger assembly with roof-mounting side feet that in a pivoted use position are offset from the frame end feet for improved stability.

Abstract: A method for the suppression of coal seam fires provides for the location and determination of the boundaries of a coal seam fire, directing access to the coal seam, preparation of the coal seam prior to suppression and the suppression of the fire within the coal seam using a foam mixture, the method providing minimal impact and disruption to the surface above the coal seam fire.

Abstract: A fire extinguisher system. The system includes a first fire extinguisher containing a first agent that is suitable for extinguishing fire, the first fire extinguisher having a first discharge port for discharging the first agent therethrough, and a first actuator for actuating the first discharge port. The system also includes a second, similar fire extinguisher. The system also includes a valve coupled to the first discharge port via a first line and coupled to the second discharge port via a second line, wherein the valve is configured to release the first agent and the second agent into a third line. The system also includes a controller connected to the first actuator and the second actuator, the controller configured to activate the first actuator and the second actuator in a predetermined sequence.

Abstract: An apparatus for providing an autonomous fire extinguishing system including a tank filled with an extinguishing agent with a targeting system with independently mounted targeting servos and targeting gimbal to position an emitter and an infra-red camera. A microcontroller provides control signals to the targeting servos and an actuation valve. One or more heat sensors, smoke detectors, humidity sensors, and/or carbon monoxide detectors are electrically connected to the microcontroller; and the microcontroller continuously reads in the sensor data till appropriate conditions indicating a potential fire are detected; these appropriate can be based on temperature, rate of temperate increase, smoke levels, humidity, and/or carbon monoxide levels. Once the appropriate conditions are detecting, the microcontroller commands the targeting gimbal to position the infra-red camera to a number of calculated positions, taking infra-red pictures covering the environment requiring protection.

Abstract: A training apparatus for use inside a water pool is provided, along with a number of auxiliary devices and accessories that can be used therewith. The training apparatus comprises, at least in its operational state, a floating member made from material having density lower than water density at room temperature, and a support assembly comprising at least one sinking member with at least one suction cup configured to removably adhere the sinking member to a submerged surface of the water pool; and at least one elongated member connecting between the floating member and the at least one sinking member for fixing a position of the floating member with respect to said submerged surface.

Abstract: A dual-purpose rehabilitation machine includes a base, a fixed rod unit, a mobile device, several fastener belts and a driving unit installed behind the fixed rod unit so as to shorten a distance between a user and the fixed rod unit such that when a piston unit of the driving unit is moved to a second position, the user is lifted upward from a bed or chair to abut against the fixed rod unit. The fastener belts are mounted on the mobile device, thereby eliminating the employment of a belt-fixing rod and avoiding collision of a user's head against the belt-fixing rod, which in turn, economizes the storage space and the manufacturing expense. The fastener belts are distributed on several parts of the patient to assist in stable standing up of the patient and preventing wobbling of lower parts of the patient when standing up.

Abstract: An elastic weight training apparatus includes a hollow main body and a grip. The main body is made of rubber and has an inner surface that defines an inner space, an outer surface opposite to the inner surface, at least one opening extending through the inner and outer surfaces and communicating with the inner space, and two positioning portions disposed on the inner surface opposite to each other. The grip has a rod-shaped body disposed in the inner space and has two opposite end portions respectively connected to the positioning portions.

Abstract: An exercise machine for performing triceps press exercises, including a moving user support that supports the user in a seated position. The exercise machine includes a linkage assembly that allows the user support to tilt as the user performs a triceps press exercise. As the user extends his or her arms from the exercise starting position to the exercise ending position, the user support frame—and thus the user's torso—reclines progressively backwards. The user's natural reaction to this reclining sensation is to bring his or her head forward, which encourages the user to plant his or her lower back firmly into a stable position against the back pad and in turn reduces the risk of injury associated with excessively arching of the lower back.

Abstract: A fitness device contains a strap, a handle, and a plate. The strap is substantially inelastic and flexible. The plate is substantially rigid. The handle at least partially envelopes the strap. A method of exercising with such a fitness device is also described herein. Other fitness devices and other methods of use are also described herein.

Abstract: A workout machine adapted to be used with a smart device with built-in accelerometers and an app. It has a deck movable relative to its base and a lifting gear assembly operationally using a cable via a pulley to a lifting handle. A user location pivot arm is fixed to the deck, and a screen stand extends from the deck, where the user location pivot arm and screen stand are pivotably attached to a screen platform that can hold the smart device during a workout. The user's position on the deck can indicate the resistance of the exercise based on a percentage of the user's own weight as lifted with each repetition. The fulcrum concept combined with a user location feature allow an app of the smart device to support and analyze a workout.

Abstract: An exercise apparatus that may be used in a bed, primarily for stretching and resistance exercises. The exercise apparatus may be configured with a lower frame and an upper frame. The lower frame is disposed between and connected to a bed frame and a headboard. The upper frame is connected to the lower frame and has exercise equipment attachment couplers.

Abstract: A viewing neck posture discomfort relief accessory includes a user wearable head band assembly, and an optical assembly attached to the user wearable head band assembly. The user wearable head band assembly is worn by the user to place the optical assembly in front of the user's eyes. The optical assembly enables the user to look into the optical assembly in a forward direction so that the neck of the user can be held in a generally upright comfortable posture due to the optical assembly having pairs of mirrors that reflect the path of sight of the user' eyes from the forward direction to a downward direction to allow viewing an item, such as a book page or mobile device keyboard or screen, being held by the user in a generally horizontal orientation.

Abstract: A Vertical Running Machine called a VARRI—Vertical, Anti-Gravity, Re-habilitation, Recovery, and Impact Resistant. It relates to the field of bio-mechanical technology, human physiological facts, and the relationship of gravity and the functionality of the body in motion. This is a Vertical, Anti-gravity device created for Recovery from injuries, physical therapy Rehabilitation with the functional characteristics of Impact-free conditioning and by providing a non-impact system to improve the conditioning or recovery of the user, the patient or the elderly. The device provides a method of a more rapid and safer recovery from injuries and surgery and also is capable to provide enhanced athletic performance by using a vertical, non-impact system which alleviates the damages on the muscles and skeletal structure of the body from the continuous impact of horizontal running on the ground.

Abstract: The present invention provides a multifunctional exercise apparatus for allowing a user to perform rowing exercise or other exercises. The exercise apparatus includes a frame, a sliding seat, a cord winder, a spiral spring connected to the cord winder, a cord connected to the cord winder, a flywheel for generating an exercise resistance, and one-way transmission mechanism connected between the cord winder and the flywheel. The user is able to seat on the sliding seat and slide backward and forward in accord with repeating movement of pulling the cord to perform the rowing exercise, or having lower limbs partially press upon the sliding seat and two hands grasp gripping portions at a front end of the frame to perform other exercises such as stretching exercises. When performing other exercises, a distal end of the cord is connected to the sliding seat and backward movement of the sliding seat would drive the flywheel.

Abstract: A cordless treadmill includes a deck assembly including a frame, a belt system, an incline adjustment system, and a generator system; and a display assembly that supports an electronic display device above the deck assembly for displaying information to a user. The incline adjustment system includes a lever and a lift motor, the lever having a first end rotatably coupled to a frame of the deck assembly. The generator system includes a flywheel generator coupled to at least one of a forward or rear roller and configured to generate electricity as a result of the at least one of the forward or rear rollers rotating with respect to the frame, wherein the flywheel generator is configured to provide power to the electronic display device and the lift motor.

Abstract: An exercise device has a main rod, a connecting unit, and a sub rod. The connecting unit has a first plate and a second plate, and the first plate and the second plate are both provided with an axial hole and a rotating axis. The first plate has an arced slot, and the second plate has a closing aperture, a first positioning aperture, a second positioning aperture and a third positioning aperture. The sub rod has a through aperture and a connecting aperture at an end, and the through aperture is inserted with the rotating axis. Another end of the sub rod has a front stand and a control member disposed in the connecting aperture of the sub rod. One end of the control member passes through the arced slot of the first plate to form a pull knob, another end of the control member has an inserting pin.

Abstract: The present invention relates to a rehabilitation device (1) adapted for rehabilitating and/or exercising the shoulder region, as well as to the use of such a rehabilitation device. The device has a frame (1a), in connection with which are arranged support elements (2a, 2b) enabling the upright position of the upper body during the exercise, shoulder supports (4) holding the shoulder position of the user stationary during the exercise, pivot elements (10) arranged to the ends of elongated shaft portions (9) arranged on both sides of the vertical midline (L) of the frame (1a), motion shafts (7) arranged in connection with the pivot elements (10), and elbow supports (8) attaching to the end of each motion shaft (7), wherein the motion shafts (7) and elbow supports (8) are movable by the pivot elements (10).

Abstract: A sports training and guidance platform network which intertwine various wearables is provided. The network includes at least one wearable containing one biosensor worn on the body, and input from a data stream, analytics and accessed on mobile devices. According to this aspect, the wearable network will measure and compare individual or team performance with various biosensor data, and motion i.e., accelerometers, gyroscopes. A sports training toolkit which includes the wearable communication network and platform and system is also provided.

Abstract: A balance training device is provided. The balance training device may include a rail, a plurality of foot supports slidably coupled to the rail, and at least one balance pad connected to the rail to provide a degree of angular instability. The balance training device may include an adjustment mechanism associated with the rail and each foot support to selectively position each foot support in a desired position along the longitudinal length of the rail. The balance training device may include a base including an adjustable height dimension to provide increasing levels of balance difficulty.

Abstract: Swimming goggles of the present invention comprise a hard combining frame, a left soft frame, and a right soft frame. The hard combining frame is composed of a first embedding frame and a second embedding frame, each having an embedding hole. The left and right soft frames are respectively assembled with the embedding holes. Each of the left and right soft frames is composed of a frame portion and a face contact portion. The frame portion assembled with each of the left and right soft frames receives a lens, characterized in that: the face contact portion is disposed with a flange rib with respect to an edge of the lens, to provide the face contact portion with a buffer against an impact caused when being compressed and deformed in wearing, and to provide a desired engagement without pressure stress and water leakage to ensure a wearing comfort.

Abstract: Multi-piece golf balls containing a dual-core structure are provided. The core structure includes a small, heavy inner core (center) having a relatively high specific gravity and a surrounding outer core layer having a relatively low specific gravity. The core structure may have different hardness gradients. In one preferred embodiment, the inner core and outer core each has a positive hardness gradient. The center of the core comprises a metal material such as copper, steel, brass, tungsten, titanium, aluminum, and alloys thereof. The outer core layer preferably is formed from a thermoset composition such as polybutadiene rubber. The resulting ball has high resiliency and good spin control.

Abstract: Multi-layered, golf balls having a core made of a particle-based polyurethane foam composition are provided. The ball includes a dual-layered core having a foam inner core (center) and surrounding outer core layer. The surrounding outer core layer is preferably made from a foamed composition. In one embodiment, pre-expanded thermoplastic polyurethane foam beads containing a blowing agent are used to form the foam center and outer core. In another embodiment, pre-formed polyurethane foam particles are used in both core layers. The foam cores have good resiliency, thermal stability, and durability over a wide temperature range. The ball further includes a cover that may be multi-layered.

Abstract: A golf club head includes a face, a crown, a sole, and defines a bore that is configured to receive and to selectively retain an elongate weight. The bore is aligned on a longitudinal axis that intersects the face. An elongate weight is insertable into the bore. The elongate weight is rotatable between a first angular position and a second angular position. The golf club head can further include a compliant stop positioned to contact a protrusion of the elongate weight, such that a torque threshold must be overcome to rotate the elongate weight.

Abstract: A head of a golf club is provided with a high coefficient of restitution. The head has a club head, a shaft, and a buffer element. The club head has a face panel and an installing seat. The face panel is mounted on one side of the club head. The installing seat is formed on another side of the club head and has a through hole. The shaft is an elongated body, is mounted in the club head, and has a cavity and a mounting portion on two ends of the shaft. The mounting portion is securely mounted on the installing seat. The buffer element is a compressible and resilient body, and abuts the face panel. When hitting a golf, the face panel deforms concavely, and the impulse force is conserved by the buffer element so that the face panel may not split or break.

Abstract: A golf club head includes a first portion joined to a second portion to at least partially define an interior club head volume. The first portion includes a wall defining an outer boundary of the club head volume, and a support rib extending from the wall to operatively stiffen the first portion. The second portion of the golf club head can engage the support rib, and the support rib can be adhered to the second portion to join the first portion and the second portion.

Abstract: Embodiments of golf bag support mechanisms are disclosed herein. Other examples and related methods are also generally described herein.

Abstract: A ball bat extending about a longitudinal axis and configured for testing under an accelerated break-in test. The bat includes a barrel portion including a proximal region and a distal region. The barrel portion is formed of a fiber composite material having wall thickness of at least 0.100 inch. The fiber composite material includes at least first and second plies. The first ply includes a first plurality of fibers aligned adjacent to one another and a first resin, and the second ply includes a second plurality of fibers aligned adjacent to one another and a second resin. The first ply includes a first fiber discontinuity and the second ply includes a second fiber discontinuity. The first and second fiber discontinuities are generally aligned with each other such that one of the first and second fiber discontinuities substantially overlies the other of the first and second fiber discontinuities creating an ABI fuse region of the barrel portion.

Abstract: A ball bat extending about a longitudinal axis and configured for testing under an accelerated break-in test. The bat includes a barrel portion that includes an inner surface and is formed of a fiber composite material having wall thickness of at least 0.100 inch. The fiber composite material includes at least first and second plies. The first ply includes a first plurality of fibers aligned adjacent to one another and a first resin, and the second ply includes a second plurality of fibers aligned adjacent to one another and a second resin. The inner surface of the barrel portion defines at least one annular groove. The at least one annular groove creates an ABI fuse region of the barrel portion. The ABI fuse region forms a crack initiation location when the bat is subjected to the accelerated break-in test.

Abstract: A game of target golf and a method for scoring are disclosed that generally involves a multi-zone target and a par scoring system that more accurately reflects and trains users to play traditional golf. The games may use of golf ball with limited flight capabilities that allows the players to play in smaller ranges, and with more versatile targets.

Abstract: A gaming apparatus is disclosed. The gaming apparatus includes a main panel principally formed of a first material and possessing at least one opening, and a support member configured to maintain a front surface of the main panel at an oblique angle when the gaming apparatus is set on a horizontal surface. A damping portion of the front surface of the main panel includes a second material configured to substantially reduce a bouncing effect of a projectile when the projectile impacts the second material compared to when the projectile impacts the first material.

Abstract: A system and method for controlling an exercise device are provided herein. The system includes a memory having computer-executable instructions and at least one processor to execute the computer-executable instructions to wirelessly connect the exercise device, receive a training mode, receive at least one variable for determining a power set point, determine the power set point responsive to the training mode and the at least one variable and control a magnetic brake assembly in the exercise device responsive to the power set point.

Abstract: A golf training device comprises a first elastic band loop attached to a strap wrapped around the lead shoulder of the golfer at one end and to the shaft of the golf club at the other end and also comprises a second elastic band loop attached to a strap wrapped around the lead shoulder of the golfer at one end and to the butt end of the grip of the golf club at the other end. When the golfer extends his or her arms to swing the golf club, the resistance provided by the rubber bands helps guide the golfer's swing by informing the proper location of the arms and hands of the golfer relative to the body for maximum leverage throughout the golf swing.

Abstract: An electronic golf aid system for assisting users with reading greens on golf courses includes a camera that captures images of the user's field of view, and an electronic display device with a display screen that displays captured images. A processor, which communicates with the camera and display device, is programmed to: receive signals from the camera indicative of images of a golf ball and a cup on the green; determine respective locations for the golf ball and cup; determine a perspective view of the topology of the green between the golf ball and cup from the user's point of view; determine, based on the green's topology, a proposed trajectory line from the golf ball's location to the cup's location; and direct the electronic display device to display the proposed trajectory line superimposed on the surface of the green as the green is shown in real-time on the display screen.

Abstract: An improved design for an athletic helmet incorporating non-Newtonian fluid shock absorbing structures.

Abstract: According to the various features characteristics and embodiments of the present invention which will become apparent as the description thereof proceeds, the present invention provides partially fingered gloves intended to increase the overall performance in sports activities including but limited to football and golf. Primarily because of its unique finger configurations, and/or grip enhancers, and/or hand protective properties, the present invention makes a glove more operable in various sports activities.

Abstract: An apparatus for sharpening and/or beveling of either a ski or snowboard side edge or base edge is provided. It comprises a tool support bar, a wear plate, a shim and an indexing pad that are adapted to be handheld by a technician using the apparatus. Each bar includes two tool support surfaces and may be detached and reattached to the wear plate. The shim and indexing pad are also attachable to the apparatus at a plurality of locations that provide multiple angular orientations for a sharpening tool used with the apparatus.