Abstract: A folding knife with a safety for blade is provided. When a blade of the folding knife has been turned to an extended position, a slip switch of the safety for blade is moved to a safety lock position to depress a push element, so that the push element engages a lower end with a first locking hole on the blade, preventing the blade from undesirably closing in the event a blade lock of the folding knife is unexpectedly released or the blade is subject to an over big impact. On the other hand, when the blade has been turned to a folded position in a handle of the knife and the slip switch is moved to the safety lock position, the push element engages its lower end with a second locking hole on the blade to prevent the blade from undesirably separating from the handle. The safety for blade therefore provides the folding knife with a further means to ensure the safe use of the folding knife.

Abstract: A collapsible barbecue tool assembly includes a barbecue tool, a handle and a latch mechanism mounted in the handle. The handle includes an elongated cavity for slidably receiving a blade portion of the barbecue tool. The blade portion of the tool has one or more locating elements. The latch mechanism releasably engages one of the locating elements so that the tool is movable to and between a collapsed position and an extended position.

Abstract: A reciprocating tool (e.g., a reciprocating saw) comprising a housing, a spindle mounted for reciprocating movement within the housing and having an end adapted to receive a saw blade, and a blade clamp mechanism connected to the spindle and adapted to attach a saw blade to the spindle. The blade clamp mechanism includes an actuating member mounted on the end of the spindle and capable of moving relative to the spindle between an engaged position and a disengaged position, and a locking member operatively associated with the actuating member and moveable relative to the spindle between a locked position that locks a saw blade to the spindle and an unlocked position that releases the saw blade.

Abstract: A bipolar electrosurgical instrument has opposable seal surfaces on its jaws for grasping and sealing vessels and vascular tissue. Inner and outer instrument members allow arcuate motion of the seal surfaces. An open lockbox provides a pivot with lateral support to maintain alignment of the lateral surfaces. Ratchets on the instrument members hold a constant closure force on the tissue during the seal process. A shank portion on each member is tuned to provide an appropriate spring force to hold the seal surfaces together. During surgery, the instrument can be used to grasp and clamp vascular tissue and apply bipolar electrosurgical current through the clamped tissue. In one embodiment, the seal surfaces are partially insulated to prevent a short circuit when the instrument jaws are closed together. In another embodiment, the seal surfaces are removably mounted on the jaws.

Abstract: A collapsible barbecue tool assembly includes a barbecue tool, a handle and a latch mechanism mounted in the handle. The handle includes an elongated cavity for slidably receiving a blade portion of the barbecue tool. The blade portion of the tool has one or more locating elements. The latch mechanism releasably engages one of the locating elements so that the tool is movable to and between a collapsed position and an extended position.

Abstract: A foldable pocket knife constructed to look like a fine writing pen includes a quick opening blade moved about 180° from the closed to the open position by grasping a pivotally movable portion of the knife handle which moves with the blade as a unit for 180° to open the blade and then continues in its pivotable movement 360° to its original position where its functions, together with a stationary handle portion, as the handle of the knife. The knife blade is closed by moving the moveable portion of the handle in the reverse direction to engage the blade and subsequently move together with the blade as a unit back to the original position adjacent the stationary portion of the handle. Accordingly, the user's hand need not contact the blade in either the opening nor the closing movement thereof.

Abstract: A handheld machine tool, for example a circular saw, has a disk-shaped tool which is driven in rotation in a housing which holds a drive motor and a tool shaft carrying the tool. The tool can be clamped between a clamping nut, a clamping screw, and two supporting flanges. One supporting flange can be rotated easily relative to the tool shaft without use of auxiliary tools and is supported with an extensive friction at the tool. This supporting flange can be dependably clamped or loosened without tools. The machine tool further has an adjusting device which is coupled with that supporting flange to displace the latter axially toward the tool when that supporting shaft is rotated relative to the tool shaft due to rotational driving. The adjusting device therefore clamps the tool with an increasing force and tries to displace that supporting flange axially away from the tool automatically when the tool is stopped and accordingly reduces the clamping force.

Abstract: Manual shaving devices for shaving underarm areas and other small contoured skin surfaces. Each device has a head structure contains one or more razor blade strips between two non-shaving side glide surfaces. In preferred embodiments, the head structure has exposed blade strips about 12 mm to 25 mm (0.5" to 1.0") long, and glide areas each preferably 6 mm to 12 mm long. The blade strips may be straight or curved. The glide areas are preferably rounded with rounded edges, and may smooth or textured. Each device helps facilitate safe shaving of skin surfaces that are soft and pliable by allowing the user to apply, through the glide areas, a non-cutting force to the general area of the skin surface being shaved. This helps alter the skin contour to more closely match that of the sharpened razor blade edges of the device, which are relatively short in length and only bear lightly against the skin to be shaved.

Abstract: In order to improve adhesion between the skin and a razor guard provided at the leading edge of a razor cartridge, the guard is provided with a large number of small concavities. These are preferably, but not to limited to hemispherically shaped concavities and are discrete and thus isolated from one another. These concavities can act as suction cups that increase the adhesion between the skin and the guard and thus tension the skin as the razor is drawn thereover. These concavities or dimples can also contain a reserve of shaving preparation for release on multiple passes over the same area.

Abstract: A knife and a reversible blade are described. A handle provides a blade mount for an elongated blade having opposed longitudinally overlapping first and second cutting edges. Handle mounting surfaces are provided on the blade, interchangeably engageable with the blade mount to enable selective attachment of the blade to the handle with either first or second cutting edges thereof exposed in an operational position.

Abstract: A folding knife with a blade having a bottom end edge and a handle grip portion. The blade is pivotally mounted at one end of the handle grip portion. The handle grip portion has a hollow slot. The folding knife includes a leaf spring with first and second ends and a protruding member. The first end of the leaf spring is connected to the handle grip portion and the leaf spring substantially extends along a length of the slot and the second end of the leaf spring is configured to abut against the bottom end edge of the blade and lock the blade firmly in place when the blade is fully extended out of the handle grip portion. The device includes a steel ball positioned on the protruding member and a cover plate having a through bore. The cover plate is mounted on the handle grip portion securing the steel ball between the protruding member and outer edges of the through bore.

Abstract: An adapter is provided for removably coupling a saw, including a tang portion having an aperture formed therein, to a tool. The adapter includes a base member and a clip pivotally coupled to the base member. The base member has first and second ends, and first and second surfaces extending between therebetween. An opening is formed in the first and second surfaces of the base member, proximate the first end. The opening is adapted to receive an axle of the tool. The base member further includes a slot formed in the first surface and a projection extending in to the slot. The slot is adapted to receive the tang portion of the saw, and a projection is adapted to be received in the aperture to align the saw with the base member. The pivotally coupled clip is movable between a closed position, in which the saw is retained in and secured to the base member, and an open position, in which the saw is removable from the base member.

Abstract: A shaving apparatus having a shaver head with a blade and a stretcher member, which stretcher member moves from a first position abutting the shaver head and blade in a direction opposite the direction of movement of the blade as the shaving apparatus is moved against the skin to stretch the skin. Such stretcher member can include mechanical movement structure including a pair of wheels moving a gear which, in turn, moves a rack member to advance such stretcher member to a second position away from the shaver head. In an alternate embodiment, the movement of the stretcher member can be accomplished by means of a motor and electric sensing means to direct the stretcher member to move when the shaver head moves against the skin.

Abstract: A knife is described including a handle with a blade mount. An elongated blade with a handle mounting surface is releasably engageable with the blade mount on the handle to enable selective attachment and detachment of the blade to and from the handle. The blade mount includes a blade back configured to receive a length of the blade and a tang disposed within the handle. A blade release is formed integrally with the tang and includes an integral elongated bar spring extending longitudinally within the handle from an end joined integrally with the tang, to a laterally movable free end. A blade lock is located on the elongated bar spring adjacent the movable free end, laterally positionable by deflection of the elongated bar spring to selectively engage and lock the blade in an extended operative position, and a release position clear of the blade.

Abstract: An extensible cutlery device has a hollow tube, a first casing disposed in the hollow tube, a second casing disposed in the hollow tube, and a fork device disposed between the first casing and the second casing. The first casing engages with the second casing. The fork device has a handle inserted in a spacing defined between the first casing and the second casing. A drive mechanism drives the fork device to extend and retract. A plug seat has two hook ends inserted in a rear end of the hollow tube.

Abstract: A blade assembly for use in a razor has at least one blade providing a cutting edge, a leading skin guide located ahead of the cutting edge, and a trailing skin guide located behind the cutting edge. The leading and trailing skin guides are configured to provide one or more front contact surface and one or more rear contact surface, respectively, for contacting the skin of a user. These front and rear contact surfaces lie substantially on a virtual convexly-curved contact profile such that, when the blade assembly is pressed against the skin of a user, the skin becomes stretched to conform to the contact profile.

Abstract: A collapsible barbecue tool assembly includes a barbecue tool, a handle and a latch mechanism mounted in the handle. The handle includes an elongated cavity for slidably receiving a blade portion of the barbecue tool. The blade portion of the tool has one or more locating elements. The latch mechanism releasably engages one of the locating elements so that the tool is movable to and between a collapsed position and an extended position.

Abstract: An ice axe which includes a handle/shaft having a gripping end and a working end, an axe head attached to the working end, and a grip attached to the gripping end. The working end of the handle/shaft is configured with a shorter cross-sectional dimension along an axis parallel to a plane in which the axe would be swung when used. The axe head includes a pick end and an oppositely disposed hammer end, with the hammer end including a sharp ridge protruding generally in the direction of the handle/shaft and transversely thereof so as to allow the hammer end to be used as a hook for ice pockets, rock ledges, etc.

Abstract: An appliance for removing hairs growing from skin is provided with a clamping device and a cutting device cooperating therewith. The clamping device clamps the hairs to be removed and subsequently extracts them at least partly from the skin, whereupon the hairs extracted partly from the skin are cut through adjacent the skin by the cutting device. The hairs thus cut through return to below the surface of the skin, so that a smooth shaving result is achieved which remains intact during a considerable period. According to the invention, the appliance is provided with structure for adjusting an extraction distance over which the clamping device extracts the hairs from the skin before they are cut through by the cutting device. In a special embodiment, the structure is adjustable to a first mode in which the appliance purely has a shaving function and to a second mode in which the appliance purely has a depilation function.

Abstract: An electric shaver includes a main blade 1 having an external blade formed with a large number of blade holes and an internal blade coming in sliding contact with an inner face of the external blade and trimmer blades 2 being disposed in the proximity of the main blade, each with a blade edge directed in a direction away from the main blade so that the trimmer blades 2 and the main blade 1 can be brought into contact with a skin surface at the same time. Hair raising members 8 are projected on a blade cover 24 covering the top faces of blade members of the trimmer blades 2. When the electric shaver is moved along a skin surface, the hair raising members 8 on the blade cover 24 raise hair, thereby enhancing the hair introduction efficiency into the main blade 1.

Abstract: A skin contacting member for a razor or like shaving device. In use, the skin contacting member is located ahead of a blade or blades of the razor. The skin contacting member has channels formed by stiff wall segments that extend perpendicular to the blade cutting edge for the passage of hairs, and resilient lateral portions that extend into the channel forming narrow regions that engage and pull the hairs passing through the channels in advance of the blades.

Abstract: A utensil holding device engageable with a utensil (e.g., spoon or fork) to provide an improved gripping surface for the utensil. The utensil holding device is adapted for quick and easy attachment to a utensil. A portion of the handle section of a utensil is arranged inside a cavity formed by the utensil holding device. The device allows an individual to better grip and maneuver a utensil.

Abstract: A dry shaver with a skin stretcher comprises a shaver body and a shaving head mounted on top of the shaver body. The shaving head comprises at least one cutter unit with a perforated outer cutter. An inner cutter is driven to move in hair shearing engagement with the outer cutter. The skin stretcher comprises a skin contact elongated along the periphery of the outer cutter and a base through which the skin contact is held on the shaving head. A macro displacement structure is provided to allow the skin contact to be movable within a macro displacement range relative to the shaver body. The skin contact is made from an elastic material capable of being elastically deformed within a micro displacement range relative to the base. With the combination of the macro and micro displacements of the skin contact, the skin contact can be kept in contact with the skin of a user in conformity with various contours of the skin.

Abstract: A flexible cutting tool includes a substantially cylindrically-shaped housing having a first end and a second end. The first end includes a hollowed region. A substantially cylindrically-shaped bushing, having a first face and second face and including a flexible material, is sized such that the first face and at least a portion of the bushing are secured inside the hollowed region of the housing. The bushing includes a bore extending through the first face, the second face, and an axis of the bushing. A cutting tool includes a cutting edge, a stop, and a shaft between the cutting edge and the stop. A diameter of the stop is larger than a diameter of the bore for allowing the stop to enter the second face of the bushing, frictionally pass through the bushing and exit the first face of the bushing. A diameter of the shaft is smaller than the diameter of the stop and larger than the diameter of the bore such that the bushing frictionally engages the shaft.

Abstract: A shaving apparatus to be drawn by a user across an area of skin in a shaving direction for removing hair from the area of skin includes a handle to be held by the user, a cutter device mountable on the handle, and a hair erecting device mounted forwardly of and adjacent to the cutter device. The hair erecting device features a rotary assembly with a plurality of axially extending projections for engaging the hair of the user, and a drive mechanism for driving the rotary assembly. The projections of the rotary assembly engage the hair of the user and erect the hair so as to improve operation of the cutter device. The shaving apparatus may be implemented with the hair erecting device attached to the handle and the cutter device in the form of a replaceable cartridge. A rear roller may be mounted behind the cutter device for dispensing a chemical composition onto the skin of the user.

Abstract: The present invention is an improved device for shaving the skin of a person. In one embodiment, the shaving device comprises a handle member having a lower portion and an upper portion. The shaving device further comprises a lower body member engaged with the upper portion of the handle member. The lower body member comprising a cavity portion and a radial shaped leading surface. The shaving device further comprises a razor blade disposed within the cavity portion and having a cutting edge. The shaving device further comprises an upper body member having a lower mounting portion and a radial shaped trailing surface. The lower mounting portion is adapted to secure the razor blade within the cavity portion. The trailing surface and the leading surface are disposed radially outward of said cutting edge. The shaving device further comprises a recess portion separating the leading surface and the trailing surface and providing access to the cutting edge of said razor blade.

Abstract: A saw includes a handle and a saw blade pivotally coupled to the handle and having two or more orifices. The handle has a spring-biased projection for engaging with the orifices and for securing the saw blade at a selected angular position relative to the handle. A knob is slidably engaged in the handle for disengaging the projection from the orifices and for allowing the saw blade to rotate relative to the handle. The handle has an arch for forming an opening and for engaging with a hand of a user. A panel is slidably engaged in the arch for shielding the opening.

Abstract: A device for removing dough from a piece of baked goods includes a handle and a blade having a cutting edge secured to the handle. The blade is contoured to define an open region between the blade and the handle so that dough removed from the piece of baked goods can pass through the open region between the blade and the handle.

Abstract: A razor that facilitates shaving effectiveness by effectively rendering the surface to be shaved taught. The razor comprises two or more surfaces wherein at least one of the surfaces is a cutting surface. The surfaces are inclined relative to each other, such that the skin and soft tissue in the area to be shaved is immobilized or pinched toward the cutting surface.

Abstract: A hand-held tool is used to cut soft materials, such as pumpkins, for example in the carving of decorative designs. The tool has an elongated handle that has a forward cavity. A stiff blade extends forwardly of the handle in a longitudinal direction and has a shank portion in the cavity to reduce the danger of fatigue breakage.

Abstract: An electric shaver including an electric motor and a shaving head, driven by the electric motor, for cutting hair to be shaved, the shaving head including: at least one cutting blade having a cutting edge; at least one cutting plate defining a generally flat surface, which the cutting edge engages upon cutting through a strand of hair.

Abstract: A shaving unit includes a skin engagement surface member for contact with the skin in advance of a blade edge and defined by a series of resiliently mounted elements (9) defining between them slots (10) through which hairs can pass while being subjected to a light pulling force to increase the length of hair projecting from the skin prior to cutting. The skin engagement surface member may be a guard of the shaving unit or it can be mounted between two blades.

Abstract: A potato-vegetable peeler structured with a longitudinally disposed shaftway to secure the peeler blade and facilitate cleaning of the peeler and shaftway and a method for making the peeler.

Abstract: A collapsible barbecue tool assembly includes a barbecue tool, a handle and a latch mechanism mounted in the handle. The handle includes an elongated cavity for slidably receiving a blade portion of the barbecue tool. The blade portion of the tool has one or more locating elements. The latch mechanism releasably engages one of the locating elements so that the tool is movable to and between a collapsed position and an extended position.

Abstract: A sacrificial anode element is connected to a knife blade to protect against galvanic corrosion. The knife also has non-metallic components that electrically insulate the metallic components of the knife from one another to further inhibit galvanic corrosion. The knife may be readily disassembled without tools. This feature enables a user to clean or dry the internal portions as well as to customize the knife by replacing its components with similar components of different materials, shapes and other useful properties. For example, a user may choose between a blade made of a metal that is exceedingly resistant to corrosion but dulls after an average period of use and a blade that is of average corrosion resistance but holds an edge exceedingly well. Other replaceable components may be selected from a group of like components of different colors.

Abstract: A shaving system that includes a housing, one or more blades mounted on the housing, a cap behind the blades on the housing, and a guard structure in front of the blades on the housing, the guard structure including flexible skin-engaging protrusions that engage a user's skin in front of the blades and a water leachable shaving aid composite positioned to deliver a shaving aid to the skin behind the flexible skin-engaging protrusions.

Abstract: A dry shaver with a skin stretcher comprises a shaver body and a shaving head mounted on top of the shaver body. The shaving head comprises at least one cutter unit with a perforated outer cutter. An inner cutter is driven to move in hair shearing engagement with the outer cutter. The skin stretcher comprises a skin contact elongated along the periphery of the outer cutter and a base through which the skin contact is held on the shaving head. A macro displacement structure is provided to allow the skin contact to be movable within a macro displacement range relative to the shaver body. The skin contact is made from an elastic material capable of being elastically deformed within a micro displacement range relative to the base. With the combination of the macro and micro displacements of the skin contact, the skin contact can be kept in contact with the skin of a user in conformity with various contours of the skin.

Abstract: A shaving implement, such as a disposable cartridge or razor, comprises a shaving head which includes a skin-contacting element, in the form of a plurality of sections of flexible ridges. The ridges in each section are oriented alternately at positive and negative angles relative to the blade, in a herringbone pattern, and define flow-through recesses. Preferably, a ridge from each section is joined together with a ridge from an adjoining section, to form a chevron-shaped node between sections. When shaving, adjacent sections push areas of the skin in different directions, while the flow-through channels retain a layer of lubricating material on the skin, so that the cartridge provides a smooth, comfortable shave.

Abstract: Shaving apparatus includes a shaver head movable across the user's skin to be shaved of hair, and a cutter device carried by the shaver head and extending transversely to the direction of movement of the shaver head across the user's skin. The apparatus further includes a hair erecting device forwardly of and adjacent to the cutter device for moving the hairs towards an erect position prior to their engagement with the cutter device. The hair erecting device includes a rotary assembly carrying on its outer surface a plurality of protrusions or fins configured to engage the hairs and to move them towards an erect position during the rotation of the rotary assembly.

Abstract: A cutting tool adapted to be reciprocated by a manually manipulated air hammer or similar device while being used to separate laminated materials. The cutting tool comprises a blade of thin resiliently flexible metal having a sharpened edge and an opposite driven edge, and an adapter comprising a blade holder portion which may include polymeric material permanently molded around a portion of the blade adjacent its driven edge, and a shank portion shaped for engagement by the air hammer attached to the blade holder that has an end shaped for engagement by the air hammer or similar device. The majority of or all of the adapter can be formed of the polymeric material to provide a low mass for the cutting tool and an average specific gravity for the adapter that is significantly less than the specific gravity of metal.

Abstract: A unique, highly effective, electric dry shaver incorporating rotary cutting blades for use by women to effectively, conveniently, and comfortably shave both legs and underarms is achieved by incorporating a blade guard removably mountable to the electric shaver for partially blocking the rotary cutting blades while also smoothing and/or stretching the soft underarm skin. By employing the rotary cutting blade guard of the present invention, the soft, pliable skin typically found in underarms is comfortably smoothed, spread, and/or stretched to prevent any cutting or pinching of the skin by the blades. As a result, a close, comfortable shave is attained, with all of the hair being completed cut, regardless of the contours of the skin surface or the soft, pliable nature of the skin. Furthermore, when the legs are to be shaven, the blade guard is removed thereby fully exposing the side walls of the slotted outer cutter so it can be used in its entirety.

Abstract: A swivel spoon of the type having a functional member which rotates in relation to a handle is provided. The swivel spoon comprises: a handle and a stem having an elongated section, an angled section, a spoon bowl end, and a first end. A portion of the elongated section is rotatably connected to the handle in a manner such that the spoon bowl rotates in relation to the longitudinal axis of the handle. The angled section extends at an angle between twenty-five and sixty degrees from the longitudinal axis of the elongated section of the stem. The spoon bowl extends from the angled section parallel with the handle and the elongated section of the stem.

Abstract: A deburring knife has a body extending along an axis, having a front end, and having a rear end formed with an outer surface, a hollow handle fitted over the rear end and having an inner surface confronting the outer surface of the body and a blade affixed to the handle front end. One of the surfaces is formed with a row of angularly extending and axially spaced holding ridges having outer edges and defining a row of axially spaced, radially open, and angularly extending holding grooves each extending relative to the axis over substantially less than 360.degree., and an axially extending ridge-free guide. The other of the surfaces is formed with a radially projecting holding ridge engageable in the grooves and on the guide. The guide and ridges are so dimensioned that when the other-surface ridge is aligned in the guide the handle can move axially on the body.

Abstract: A micromachined blade suitable for medical applications has an edge which is free of the imperfections common in mechanically sharpened steel blades. A method of forming micromachined blades having the desired characteristics may be performed by etching with anisotropic or isotropic etchants. This micromachined blade may be formed of a single-crystalline substrate, such as a silicon wafer commonly used in integrated circuit technology. Thus, such a micromachined blade may also carry circuitry capable of assisting a surgeon in the performance of certain procedures.

Abstract: The surgical saw blade and hub of this invention includes a saw blade and instrument hub which connect the saw blade to the instrument such that no portion of the instrument extends beyond the blade. The blade includes a washer having a plurality of radially extending slots in communication with the central bore of the washer. Alternating slots of the washer are truncated or otherwise do not fully extend through the washer. The truncated slots form shoulders or lans within the washer. The center opening of the washer is in alignment with a base opening in the blade and accommodates a hub from the powered instrument. The hub of the powered instrument includes a plurality of radial fins extending outwardly therefrom. The fins abut against the shoulders of the washer to lock the blade to the hub. A helical spring is provided to maintain pressure against the blade and thereby retain the blade and hub in a locked configuration.

Abstract: According to the invention, the blade holder has a skin contact surface which is curved in a concave fashion in the moving direction of the razor. This design causes the skin to be curved in accordance with the contact surface while shaving thus achieving an upright alignment of the beard hairs.

Abstract: A manual hair cutting implement for enabling a person to cut his or her own hair. The implement includes an elongated handle having a brush rotatably mounted thereon, and two combs and two cutting blades. The brush, combs, and blades are mounted on a working head which is pivotally adjustable with respect to the handle, so that the angle therebetween is adjustable. The brush is cylindrical, and has an axis of rotation longitudinally disposed with respect to the handle. The combs and blades are arranged to intersect the periphery of the cylindrical brush, so that hair is appropriately lifted from the head by the brush, maintained in place by the combs, and cut by the blades. The blades are located in a protected position between the handle and brush, and inside the comb, so that exposure of the blade is minimized for safety. The working head is also adjustably mounted to the handle, so that the effective length of the latter is adjustable.

Abstract: A method of removing hardened urethane from about a defective windshield using a two-bladed knife in which one blade follows along a straight path and the other along a wavy path due to varying reissuance to cutting of the urethane, such that the wavy path brings the one blade closer to the other blade and results in engaging severed urethane between the blades and in this manner facilitates the removal of the engaged urethane as the knife is continued along its cutting stroke.

Abstract: A bone plug cutting blade for a peripheral drive oscillating surgical saw. The blade has a split stem so that it can be placed around a tendon attached to the bone before being inserted into the saw's blade holder.

Abstract: A razor blade body in the form of a cartridge structure includes a guard member assembled thereon forward of, and extending parallel to, the blade or blades. The guard is of a two part molded structure having an upper portion of elastomeric material with a plurality of upwardly projecting protrusions formed thereon and a lower base portion of rigid plastic material having a downwardly projecting V-shaped cross-sectional portion. A pair of upwardly projecting elements are disposed in spaced relation forming a recess on the blade cartridge structure for receiving the V-shaped base portion therebetween and a latch means disposed in the recess retains the guard member in the assembled position.