Abstract: A system and method for improving installation of a prosthesis. Devices include prosthesis installation tools, prosthesis assembly tools, site preparation systems, and improved power tools used in implant site preparation, the tools including a secondary motion that preferably includes an ultrasonic vibration.

Abstract: A power tool includes a body housing including a first grip, inlet facing a front surface of the first grip, first outlet, and second outlet; a brushless motor held on the body housing and including a rotational shaft; an output unit supported on the body housing in a reciprocable manner; a power transmission mechanism between the brushless motor and the output unit in the body housing to transmit rotational motion of the rotational shaft to the output unit; a controller held on the body housing to control the brushless motor; and a fan held on the body housing and mounted on the rotational shaft. The body housing allows air drawn through the inlet and having cooled the brushless motor to be divided into first and second outlet blows respectively cooling the power transmission mechanism and discharged through the first outlet, and cooling the controller and discharged through the second outlet.

Abstract: A method of balancing an ultrasonic instrument having an ultrasonically actuated blade is disclosed. The blade includes a body portion and a step portion extending from the body portion. The body portion comprises a first side, a second side, and a width defined between the first and second sides. The step portion includes a first surface, a second surface, and a cutting edge situated intermediate the first and second surfaces. The second surface extends between a first plane including the cutting edge and a second plane which is parallel to the first plane. The first and second surfaces are not parallel and are oriented such that there is an angle defined therebetween. The method comprises the steps of configuring at least a portion of the blade such that a relationship is substantially equal to zero.

Abstract: A cutting device is disclosed. The cutting device has a body member formed from a first material and including a cavity extending along a length of the body member from a first end of the body member to a second end of the body member that is disposed on an opposite side of the body member as the first end, a cutting assembly formed from a second material and attached to the body member, the cutting assembly including a protrusion, and a cutting member disposed on the cutting assembly. The body member includes an aperture extending from the cavity to a third end of the body member that is disposed between the first and second ends. The cutting assembly is attached to the body member based on the protrusion being received in the aperture. The first material is more flexible than the second material.

Abstract: A gardening tool includes an elongated body having a first end and a second end. An arm attachment portion is coupled substantially at the first end of the elongated body. The arm attachment portion is configured to at least partly wrap around a user's forearm. The tool also includes a pivotally adjustable handle that is coupled to and extends substantially laterally from the elongated body. The handle is disposed between the first and the second end of the elongated body. The tool further includes a pad that is coupled to the elongated body. The pad is disposed between the handle and the arm attachment portion, and its position is adjustable along a longitudinal axis of the elongated portion. A adapter mechanism is disposed at the second end of the elongated body. The adapter mechanism is configured to allow for interchanging of gardening tool heads.

Abstract: An assembly for alternatively ornamenting a proximal end of a finger and enhancing friction at the finger's distal end, the assembly incorporating first and second bands; an adjustable ring clasp for alternatively receiving and releasing the finger; a magnetic crown; a wholly formed joint interconnecting the magnetic crown and the second band, the wholly formed joint positioning the magnetic crown over the second band's upper end; a shaft having an anchor end pivotally attached to the first band, and having an opposite end attached to the second band, the shaft being adapted for, upon mounting of the first band upon the finger, orbiting and counter-orbiting the second band between flexed and extended positions wherein upon flexing the magnetic crown may overlie the proximal end of the finger, and wherein upon extending, the magnetic crown may overlie the finger's distal end.

Abstract: A base has a top, a bottom, a left side, a right side, an upper section, a lower section, a left lateral section extending outwardly and upwardly from the lower section, a right lateral section extending outwardly and upwardly from the lower section, a left surface along the left side section and the left lateral section, and a right surface along the right side section and the right lateral section. The left surface and the right surfaces are each in a generally semi-cylindrical configuration and together form a primary gripping assembly. A head with an operational face faces away from the base. The operational face includes at least one left blade and at least one right blade and an arcuate sliding surface there between.

Abstract: A dual shaving razor assembly includes an arched central main body and first and second pairs of legs extending down from first and second sides of the main body, respectively, the legs of each pair being in spaced relation to each other. Each pair includes a securing arrangement for securing a shaving cartridge having blades thereto such that each shaving cartridge is adapted to pivot relative to the main body. First and second flexible and resilient wings extend from the first and second sides, respectively, of the main body between the first and second pairs of legs to a position immediately above a respective shaving cartridge held by the respective pair of legs. The wings are adapted to engage an upper surface of the respective cartridge to pivot the shaving cartridge relative to the main body upon application of an external force to the respective flexible and resilient wing.

Abstract: A holder for a personal computing device (PCD) and method for allowing a user of a PCD to securely hold the PCD with a single finger; to selectively position his or her thumb horizontally, vertically, angularly, and a desired distance away from the PCD, when holding the PCD to more easily reach any point on the touchscreen with the thumb on his same hand without ever needing to resort to using his other hand; and allowing the user, in the alternative, to rest the PCD on a flat surface, such as to read articles or watch videos, and prop the PCD up at a multitude of angles, in both landscape and portrait orientations depending on whether the flat surface is high or low and whether the user is sitting or standing.

Abstract: A strength training and stretching system may include a primary arcuated member extending from a lower portion of the strength training and stretching system to an upper portion of the strength training and stretching system, and a plurality of cleats disposed on the primary arcuated member at a plurality of different positions. Each cleat is configured to receive an exercise band.

Abstract: A culinary nut opening device can include a mount and a tool. The mount can be sized and shaped to securely and removably receive a finger or a thumb of a human user. The tool can extend from and be coupled to a portion of the mount. In varying examples, the tool can include a pick portion that is sized and shaped to fit at least partially within an opening of a culinary nut and have sufficient stiffness to allow the culinary nut to be pried open. A pick portion can extend ventrally, laterally, or dorsally from a side of the mount, or from a distal end of the mount. A culinary nut opening device can be provided with or packaged in a container of culinary nuts, or with other culinary nut opening devices (e.g., of different sizes), or with instructions for use.

Abstract: A knife includes a knife blade and an ergonomic knife handle carried by the knife blade, the ergonomic knife handle including a knife handle frame having at least one finger opening sized and configured to accommodate at least one finger of a user.

Abstract: A fingertip mountable shaving device is provided by a flexible and breathable substrate layer including a first shaving surface, and a second adhesive surface opposite to the first shaving surface. The first shaving surface includes a plurality of rubber strips along the vertical peripheral edge and a plurality of blade assemblies affixed at predetermined locations. The blade assemblies of include a vertical stack of a plurality of rotary blades of different diameters alternately interspaced by spacers and having a hemi-spherical protective cap with a vertical stem, on the top. The second adhesive surface is coated with an adhesive suitable for temporarily mounting the device on a fingertip and is covered with a releasably connected protective peel off layer. The device can safely and closely shave hair from the face and other difficult to reach body surfaces, such as within the ear or nostrils.

Abstract: Invention generally includes a ring with a slit for removably positioning clippers and an aperture for positioning a finger and wherein the ring is made from a semi elastic material that allows wedging of the clipper in the slit as well as positioning a finger in the aperture.

Abstract: Described is a hand held hair cutting apparatus that includes a razor blade holder with four finger holes extending through the holder. A razor blade, either straight or arched, can be attached to one edge of the holder. allowing the razor to be easily changed. Placing fingers through the holes in the holder allows a user to securely hold tool using four fingers. The apparatus can also be configured with three finger holes and a finger rest for end finger.

Abstract: A ring cutter having a metal ring constructed to be mounted on the finger of a user. A cutting blade is connected to the metal ring. The inner surface of the metal ring is covered by a plastic coating to reduce friction on and prevent irritation of a user's finger during extended periods of use. The plastic coating may be molded on the metal ring to cover the inner and outer surfaces thereof.

Abstract: Clipper for lemons and other fruits. The clipper can have a pair of operating arms, a pivot assembly for the operating arms, a lower central open-position abutment mechanism, hand grips with adjustable and alternative left and right-hand strap mounting, and an out-of-the-way abutment arrangement to define a clipper open position. The pivot assembly can include a dust-free rotation structure and an out-of-the-way torsion spring. Gripping handles for clippers and the like are also disclosed.

Abstract: A versatile shaver has a shaver body with a blade cartridge mounted at one end of the underside and a rotating wheel at the other end. A resilient finger hook and associated pads are located on an upper surface. A user can insert an index finger through the hook and use the shaver in a palm grip to shave the scalp. The shaver body narrows between the blade end and the wheel end thus facilitating a grip between the fingers and thumb for ready shaving of the face.

Abstract: An electric shaver includes a housing and a cutter head extending down from the housing. The housing contains the motor and is shaped to provide a grip that includes a pair of concave surfaces on the sides. An additional pair of concave surfaces is formed in the undersurface of the housing that accommodates the backs of the user's fingers when the cutter head is held for shaving.

Abstract: A pair of scissors with an open second handle includes a first blade and a second blade pivotally connected by a pivot member. A first grip portion of the first handle surrounds the basal portion of a user's thumb, the thumb extends out of an inserting hole of the first blade in a lateral direction and presses against a first extension section, so that the user can hold the first grip portion with the thumb without bending too much at the wrist, thus enhancing stability of holding the scissors. The user's middle, ring and little fingers press against the grip section of the second handle, and the index finger rests against the second extension section. Besides, since the second grip portion is an open structure, the fingers of the user are supported but not restricted by the second grip portion, which improves stability and flexibility when using the scissors.

Abstract: A multi-purpose hair cutter according to the present invention includes a body member, a blade member, and a projection member. The blade member is attached to a first side of the body member in a height direction. The projection member has a base part and at least one projecting part. The base part is attached to a second side of the body member opposite to the blade member in the height direction. The projecting part is formed to project from the base part and rises in a direction opposite to the blade member.

Abstract: A handle assembly for a power tool is disclosed, in which the power tool has a housing, a motor provided in the housing, an output shaft adapted to be caused by the motor to execute reciprocating motion, and a blade assembly (5) extending from the housing along a first axis (A-A). The handle assembly (2) comprises a front handle (6), a rear handle (7) integral with the front handle (6) and a mounting portion adapted to be mounted to the housing of the tool, wherein the rear handle (7) is displaced from the plane (A-A) of the blade assembly (5) in use. As a result of this, the knuckles of the hand of the user that is gripping rear handle (7) are raised away from the surface of the object being cut. This provides the advantage that the user's knuckles avoid any grazing or cutting resulting from contact with the object, or with the ground when carrying out low cutting.

Abstract: A handle assembly for a power tool is disclosed, in which the power tool has a housing, a motor provided in the housing, and an output shaft adapted to be caused by said motor to actuate a working member extending from the housing along a first axis (A-A). The handle assembly (102) comprises a front handle (106), a rear handle (107) integral with the front handle, and a mounting portion adapted to be mounted to the housing of the tool, wherein the front handle (106) forms an obtuse angle with the axis (A-A) of the working member in use. This last feature makes the power tool more comfortable for a user to operate, provided that the centre of mass of the power tool lies in the region between the front handle (106) and the rear handle (107). This will usually be the case, since the heaviest parts of the tool are generally the working member and the motor housing thereof.

Abstract: A hair clipper grip attachment is provided that is configured for releasably engaging a hair clipper, and includes a body with an exterior surface, an interior surface configured for contacting an exterior of a housing of the clipper. The body is constructed and arranged for releasably engaging the hair clipper in a snap-clip fashion for providing a thermally insulating layer that protects a user's hand from heat generated by the hair clipper.

Abstract: A knife is described having a handle that at least partially conforms to the palm of a user and includes an arcuate surface opposite the palm portion of the handle that may be utilized by the user to provide additional leverage and force to a blade cutting edge. The handle also includes finger holds formed in the handle between the palm portion and arcuate portions of the handle. An embodiment further includes an interchangeable blade extending out of the handle from the arcuate surface and may also include an actuable blade lock that fixes a portion of an interchangeable blade within the handle.

Abstract: A ring cutter for twine or the like, comprising a ring adapted to fit on the finger of a user and having a pair of side portions joined at the upper end thereof and separated at the lower end thereof by a space therebetween. The ring is formed of a flexible and resilient material. A bracket extends upwardly from the upper portion of the ring and a cutting blade is secured to the bracket and extends forwardly therefrom. The lower ends of the side portions of the ring are separable to enable a finger of a user to be removed from the ring through the space between the side portions by the application of a downward force by the finger on the lower ends of the side portions. The lower ends may be connected by a narrow tab that can be cut or is frangible.

Abstract: A safety neck razor to be used on the back of a person's neck includes a body having a top surface and a bottom surface, the bottom surface being generally flat and having an opening adapted to releasably secure a razor blade therein. Right and left side contoured edges extend upwardly from the bottom surface and an undulating protuberance extends upwardly from the center of the top surface. The protuberance has a right and a left side with a first well formed between the right side of the protuberance and the right side contoured edge and a second well formed between the left side of the protuberance and the left side contoured edge. The protuberance fits between the fingers of a person's hand and is gripped by the person's fingers so that the fingers rest completely within a respective well.

Abstract: A tool for assisting a worker in removing a windshield includes a cylindrical housing having an L-shaped blade depending from a lower end thereof. The housing includes a butane-fueled heating assembly that heats the blade to a predetermined temperature so that the blade easily penetrates the adhesive surrounding a vehicle windshield. A handle is tethered to the housing with a cable that allows a worker to easily lift the windshield once the adhesive has been completely separated.

Abstract: The present invention relates to a cutting apparatus and the method of using the same, that includes: a blade; a blade holder, which includes a means to conceal the blade; a retraction means, which maintains the blade in a retracted state within the blade holder; a release means, which provides a means to release and protract the blade in a position that makes the blade available for cutting; and a means to attach the blade holder to a finger of a user. The retraction means may include a spring, where the spring at a first end contacts a non-cutting end of the blade. The means to attach may include at least one adjustable strap which firmly wraps about the thumb of a user.

Abstract: A shaving device that defines an arcuate outer surface to be engaged between a pair of digits. Manipulation between the digits provides precise finger-tip control of the pitch, angle and pressure applied the fixed or replaceable shaving blades.

Abstract: A cutting tool having a retractable blade and capable of being guided using a user's finger. The cutting tool comprises a handle portion having at a first end thereof a first elongated support member, a second elongated support member, and an open region therebetween. A second end of the handle portion is operatively connected to a first end of a sleeve portion. A second end of the sleeve portion has a blade exposing region. A blade carriage is slidably disposed within the sleeve portion and along a longitudinal axis thereof, and a blade is operatively connected to the blade carriage. The blade carriage can move between an extended position and a retracted position along the longitudinal axis of the sleeve portion. When the blade carriage is in the extended position, the blade extends outside of the sleeve portion adjacent the blade exposing region.

Abstract: A hand-guided electric device has an electric motor for driving a tool. The electric motor has a motor housing with inlet and outlet for cooling air. A blower wheel is driven by the electric motor and cooling air is conveyed into the motor housing with the blower wheel through the inlet and blown out from the motor housing through the outlet. The device housing has a cooling air inlet chamber and a cooling air outlet chamber. The cooling air enters the inlet chamber through a cooling air inlet port in an exterior housing wall of the device housing and exits from the outlet chamber through a cooling air outlet port in the exterior housing wall. The cooling air inlet and outlet chambers are separated from one another substantially air-tightly by an inner housing wall so that motor housing is the only flow connection between inlet and outlet chambers.

Abstract: A ring cutter for twine or the like, comprising a ring adapted to fit on the finger of a user and having a pair of side portions joined at the upper end thereof and separated at the lower end thereof by a space therebetween. The ring is formed of a flexible and resilient material. A bracket extends upwardly from the upper portion of the ring and a cutting blade is secured to the bracket and extends forwardly therefrom. The lower ends of the side portions of the ring are separable to enable a finger of a user to be removed from the ring through the space between the side portions by the application of a downward force by the finger on the lower ends of the side portions.

Abstract: The present invention provides a method for cutting the tapered tip of a cartridge, providing a cutler device with an angular guide adapted to receive the tapered tip through a tapered passage and cutting the tapered tip by operating the cutter between a withdrawn and deployed position. In general the cutting device includes a slide, an elongated structure having a top, bottom, proximate and distal ends and a channel adapted to receive the slide associated with the distal end. A guide associated with the elongated structure is adapted for receipt of the tapered tip and a reciprocating blade extending from the slide has a cutting edge which is adapted for engaging the tapered tip during operation of the cutter between deployed and withdrawn positions.

Abstract: An apparatus facilitating a cutting operation includes a knife; and a hand-mountable cutting board utensil. The utensil includes: a cutting board for disposition between the thumb and an index finger of the hand, the cutting board having an exposed cutting surface for orienting toward the index finger and a second surface for orienting toward the thumb; and a retainer having two lateral sides and being configured to receive and releasably retain the thumb along a longitudinal length of the retainer. The cutting board includes portions that extend transversely to a direction defined by the longitudinal length respectively beyond the two lateral sides of the retainer, each portion having exposed, oppositely facing front and back surfaces.

Abstract: A wrist strap arrangement is provided for an attachment to a manual shaving device to guard against dropping of such razor. The wrist strap is designed to either by temporarily storable in the razor while not required or being used or to be conveniently removable from such razor during non-use by various attachment and storage arrangements.

Abstract: Tools for filling holes and preparing surfaces for painting. A finger putty knife that fits on a fingertip. The putty knife's working surface is held on the fingertip by a cylindrical band. The working surface is used to force putty into a hole and remove excess putty. The finger putty knife does not hinder the motion of the finger or other fingers and engages the fleshy part of the fingertip so that the working surface flexes while working the putty and does not come off the finger. A tool container with an attachment clip for attaching the container to the user's clothing, for holding soft putty, a razor and a putty knife.

Abstract: A relatively inexpensive, single use, single edge hair cutting device. The device includes a handle portion, typically made of plastic, and an integral blade holding portion for holding a single edge blade used to cut hair. A detachable blade protector covers the blade prior to initial use of the device. In addition, finger portions extend over the blade leaving an edge exposed for cutting hair, while providing protection against cutting of the skin. The handle portion includes a finger grip, and loop, so that the handle can be held in the hand in a comfortable position while being used to cut hair.

Abstract: A cake cutter includes a cutter blade having a female engaging member, and another cutter blade having a male engaging member for engaging with the female engaging member and for allowing the cutter blades to be quickly and pivotally coupled together and to be easily and quickly detached from each other. One of the cutter blades includes an arm, and a ramp extended from the arm, and the other cutter blade includes one or more projections for slidably engaging with the ramp of the arm and for adjustably coupling the cutter blades together and for allowing the cutter blades to be easily and readily and detachably adjusted relative to each other for cutting a piece of cake into any selected dimensions or widths.

Abstract: Ergonomic shears according to the present disclosure provides variations in finger relief and thumb alignment to accommodate variations in human physiology and an aligning finger handle that aligns the users fingers into a minimum stress position relative to each other and to the thumb. The thumb apparatus provides three degrees of adjustability to optimize the ergonomics and enable the shears to be used in conventional alignment for cutting away from the user and alternate alignment for cutting toward the user.

Abstract: A cardboard cutter comprises a main body and at least one cutting assembly. The cutting assembly is slidably mounted on the main body and is fixed on the main body by a positioning assembly. By such arrangements, during cutting process, the cuffing assembly can be stably fixed on the main body by the positioning assembly and will not be moved by the upward resistance of the cardboard, so the cutting depth is fixed, and the cuffing operation can be finished at one time. Further, the cuffing lines are trim and the products are beautiful.

Abstract: A double handle knife is described with the secondary handle rotatable upon a pivot post. In further embodiments: the secondary handle is mounted to the top of the blade at a fixed angle of 45 degrees (±25) degrees between the long axis of the secondary handle and the long axis of the knife blade; and attachments are described to convert single handle knifes into double handle knives functioning identical to those described above. A methods is described utilizing the double handle knife invention in any of its embodiments being gripped by the dominant hand on the primary handle, four fingers of the non-dominant hand being placed evenly upon the secondary handle with long axis thereof positioned at an angle of 45 degrees (±25) degrees to the long axis of the knife blade, the palm/or thumb of the same hand positioning the food item, both hands applying downward pressure and the food item being easily and accurately cut.

Abstract: A double handle knife is described with secondary handle rotatable upon a pivot post. In further embodiments: the secondary handle is mounted to top front of the blade: at a fixed angle; by splined means; or by indexable means. Attachments convert single handle knife into double handle knife functioning identical to those described above. Methods are described utilizing the double handle knife invention in any of its embodiments being gripped by the dominant hand on the primary handle, four fingers of the non-dominant hand being placed evenly upon the secondary handle with long axis thereof positioned at an angle of 45 degrees (+ or ?25) degrees to the long axis of the knife blade, the palm/or thumb of the same hand positioning the food item, both hands applying downward pressure and the food item being easily and accurately cut.

Abstract: A pair of gardening shears include a handle, a drive member, a control lever, a transmission device, and two cutting blades. The transmission device includes a housing, a pivot plate, a catch plate, a link, a catch flange, a restoring member. Thus, the restoring member is biased between the catch flange and the catch plate, so that the restoring member is not subjected to a pulling force to prevent the restoring member from being worn out by a pulling force during a long-term utilization. In addition, when the pivot head of the handle is rotatable relative to the housing, the stop post of the pivot head is movable to rest on the pivot plate to prevent the pivot plate from directly rubbing the inner wall of the pivot head.

Abstract: A heavy duty utility knife structure with rear gyre for balanced stabile cutting using excess force while cutting heavy and thick material. In turn this design becomes safer, easier and is a precision cutting knife to be used in all construction trade including home and hobby as well. With a blade storage and easy hinge opener it is a complete tool.

Abstract: [Object] To provide a tape cutter device that allows a cutting blade to be disposed at a non-adhesion-surface side of an adhesive tape and that can easily form a fold, including a non-adhesion portion, at a cut end portion of the adhesive tape after a cutting operation.

Abstract: A utensil for a digit of a hand includes a cutting board for disposition between a thumb and an index finger. The cutting board is attached to a retainer that receives and retains the thumb such that a cutting surface of the cutting board is oriented toward the index finger. The cutting surface protects the thumb during cutting of items against the cutting surface. Optionally, one or more tools are defined by, or attached to, the cutting board. In a particular example, a utensil for a digit of a hand having a cutting board is useful at least for cleaning, zesting, peeling, and paring or chopping a fruit or vegetable.

Abstract: A handle for hand held utensils or implements and more particularly to hand held utensils for eating and culinary purposes comprising a novel handle that facilitates the grasping of the said utensil or implement is disclosed. The said handle comprises a support for the internal and external parts of the user hand via an aperture in the center that surrounds the user hand. In an particular embodiment, the handle also provides two holding units connected to the lateral side of each one of the two supporting units that may be use to give further support to the user's hand if required by holding the hand to the handle by means of a supporting band made of velcro or similar material that is pass through the said holding units and around the user hand. Hand held utensils such as eating and culinary utensils having the described handle are disclosed.

Abstract: A slicing device that is able to cut a pie or other similar item into a number of pieces in which the size of each piece is substantially fixed prior to cutting. In the example of the invention, the pie is cut into a number of pieces in which each piece is substantially the same size as each of the other pieces. For example, the pie cutter may cut the pie into eight pieces, with each of the eight pieces being the same size. In some examples of the invention, the device can be reconfigured or adjusted so that it can cut the pie into a different number of pieces.

Abstract: The present invention comprises a sterilized disposable suture cutter worn preferably on the small finger of the same hand used to hold the needle holder. The device can cut by pulling the cutting edge against a somewhat taut suture material in a slicing fashion. Alternatively, the small finger can be flexed causing the cutting edge to be drawn against an opposing flat surface in a chopping motion. This second chopping method would be useful in cutting sutures where it would be difficult or impossible to place tension onto the suture. When not being used, the device does not interfere with the normal motions necessary to place sutures.