Abstract: A utility blade includes a first blade retention feature positioned on a proximal edge of a tang of the utility blade. The proximal edge is angularly offset from a longitudinal axis of the utility blade. The first blade retention feature is associated with an engagement axis parallel to the longitudinal axis of the utility blade. The utility blade is configured to translate along the engagement axis to cause the first blade retention feature to engage with a first blade engagement component of a blade holder. The utility blade further includes a second blade retention feature positioned on a second edge of the tang of the utility blade. The second blade retention feature is positioned along the longitudinal axis of the utility blade and between the first blade retention feature and a distal tip of a cutting portion of the utility blade.

Abstract: A method of manufacturing a spindle for a reciprocating saw includes machining a first portion of the spindle and forming a throughbore extending through the first portion via a flow welding process. The flow welding process includes rotating a rod relative to the spindle and inserting the rod into the first portion of the spindle, thereby displacing material from the spindle in a direction away from the rod to form the throughbore and a collar adjacent the throughbore.

Abstract: Provided is a work machine that has excellent motor support performance. A work machine that has: a motor that has a rotary shaft; a bearing that rotatably supports the rotary shaft; and a motor housing part that houses the motor. The motor housing part can be divided into at least two segments in the axial direction of the rotary shaft. At least one of the two segments: forms an integral structure that cannot be divided; and supports the bearing.

Abstract: A blade assembly for a folding knife includes a blade and a bearing assembly. The blade includes a cutting portion and a tang portion. The tang portion comprises a pivot opening, a first recess, and a second recess. The bearing assembly is coupled to the blade and includes a first bearing member, a second bearing member, and a sleeve. The first bearing member is disposed within the first recess of the tang portion, the second bearing member is disposed within the second recess of the tang portion, and the sleeve extends through the first bearing member, the second bearing member, and the pivot opening of the tang portion.

Abstract: An intimate area thinning razor, in which a comb portion includes comb teeth, a blade edge exposed portion where a blade edge is exposed, and a cover portion where the blade edge is covered. The comb teeth are provided at both ends in the width direction of the cover portion and between both of the ends, and a set of the blade edge exposed portion and the cover portion arranged in a predetermined manner is disposed repeatedly. A ratio of a total of lengths between center portions in the width direction of the comb teeth adjacent to the plurality of blade edge exposed portions, relative to a length between center portions in the width direction of the comb teeth at outermost positions in the width direction of the comb portion, is 1/10 to 4/10. Groove portions are formed on an extended line of a gap between the comb teeth.

Abstract: A pocket knife includes a first scale having a first scale inner surface, a second scale opposed to the first scale having a second scale inner surface, and a cavity between the first scale inner surface and the second scale inner surface. A blade has a cutting edge, and the blade has a retracted position in which the cutting edge is inside of the cavity and a deployed position in which the cutting edge is outside of the cavity. A recess in the first scale inner surface extends from the first scale inner surface partially through the first scale, and a flange is around at least a portion of the recess in the first scale inner surface. A boss extends from the second scale inner surface into the recess in the first scale inner surface, and an end of the boss is tapered toward the second scale inner surface.

Abstract: A grass cutting head includes a spool for winding a grass cutting line, a head housing for accommodating the spool, a first guiding structure disposed at least partially in the head housing, and a second guiding structure formed on the spool. The first guiding structure guides the grass cutting line through the head housing when threading the grass cutting line. The second guiding structure guides the grass cutting line to move and be wound around the spool by relative motion created between the spool and the head housing. The head housing includes a first housing and a second housing. The first guiding structure is disposed at least partially in the first housing. The spool is disposed between the first housing and the second housing. The first housing or the second housing is provided with an outer threading hole for allowing the grass cutting line to pass in or out.

Abstract: An excisional device for either handheld or stereotactic table use may comprise an outer sheath that may comprise a distal trough shape configured to penetrate and/or cut tissue independently or in concert with work element(s). The articulable work element(s) may comprise articulable beak(s) and may be configured to translate and/or rotate at a first rate and to cut tissue in a direction implied by placement of the trough shaped outer sheath. A first helical element or equivalent assembly may be configured to transport tissue cut by the work element(s) and/or trough, may be co-axially disposed relative to the work element(s) and may be operative to rotate at a second rotation rate that is different than the first rate. A proximal sheath may be co-axially disposed relative to the work element(s) and the first helical element, and may be configured to rotate and actuate the work element(s).

Abstract: A blade housing assembly for a power operated rotary knife including a split blade housing and an expansion sleeve assembly. The split blade housing including an annular blade support section and a mounting section extending from the blade support section. The mounting section includes a split extending through the mounting section and includes a first body portion and a second body portion on opposite sides of the split, the first body portion including a slot extending axially through the first body portion and movable between blade supporting and blade changing positions. The expansion sleeve assembly extends through the slot and includes a split sleeve changeable between first and second circumferences. The expansion sleeve assembly further including a fastener extends through the split sleeve and, when engaged with the split sleeve, maintains the split sleeve in the first circumference and secures the first body portion in the blade supporting position.

Abstract: A grass trimmer includes an operating device configured for a user to operate and a grass trimmer device including a grass trimmer head and a motor. The grass trimmer head includes a spool configured for a grass trimmer line to wind around and a housing formed with an accommodating cavity. When the grass trimmer is mounted with the grass trimmer line, a part of the grass trimmer line protruding outside the housing is defined as an effective part of the grass trimmer line. The grass trimmer further includes a controller configured to control the grass trimmer head to release a grass trimmer line when the grass trimmer head is mounted with the grass trimmer line and a length of the effective part is detected to be less than or equal to a preset value.

Abstract: A folding knife includes first and second scales and a blade having a tang and a cutting edge. The tang pivotally connects the blade between the first and second scales. The blade has a retracted position with the cutting edge between the first and second scales and a deployed position with the cutting edge outside the first and second scales. An actuator between the first and second scales has a first position that locks the blade in the deployed position and a second position that allows movement of the blade between the deployed and retracted positions. A spring is in compression with the actuator between the first and second scales so that the spring biases the actuator toward the tang of the blade. A detent in the actuator engages with the tang when the actuator is in the first position and the blade is in the deployed position.

Abstract: This application relates to a suspension housing configured to provide a movable connection between a razor blade assembly and a razor handle. The suspension housing comprises a connector being movably attached to the razor blade assembly and a suspension device operably coupled to the connector. The suspension device is configured to allow axial movement of the connector along a main axis, and rotational movement of the connector about the main axis.

Abstract: A cartridge for a razor comprises at least one blade and a first blade support configured to attach the at least one blade to the cartridge. The first blade support includes a first portion, a second portion, and a third portion, a first optical feature provided on one or more of the first portion, the second portion, and the third portion. The first optical feature is selected from one or more of a color, a coating, a texture, a perforation, a transparency of the blade support, a light emitting source, a protrusion and a sticker.

Abstract: A retractable cutter comprises a plunger that can be pressed to an on-position for pushing a thrust device of the cutter to guide a blade via a cam piston cartridge through a blade guide and partially outside a bottom retainer to expose the tip of the blade from a housing of the retractable cutter. In this on-position, a spring mechanism of the retractable cutter is engaged between the bottom retainer and the cam piston cartridge to provide a spring force for preventing the blade from extending any further. When the plunger is pressed to an off-position, the thrust device is positioned in such a way to enable the spring mechanism to rebound to its original position for retracting the blade back into the housing.

Abstract: A blade cap is provided to shield a user from heat generated by operation of a blade assembly. The blade cap provides an insulative barrier between the blade assembly and the skin of the user. The blade cap may prevent discomfort or burns from the heat generated by the blade assembly. The blade cap includes openings, channels, projections, tabs, and other formations to allow the flow of air through the passageways between the blade cap and the blade.

Abstract: A grass trimming head includes a housing assembly and a spool. The housing assembly is formed with a housing cavity and an outer aperture for allowing a cutting line to be inserted from an outside of the housing assembly into the housing cavity. At least a portion of the spool is arranged inside the housing cavity, and the spool is rotatable with respect to the housing assembly about a central axis. The spool is formed with an inner aperture for allowing the cutting line to be inserted into the spool or a clamping portion configured to fix the cutting line.

Abstract: A drive cap uses snap fasteners to couple with the housing assembly of a hair clipper. The drive cap uses joining structures, such as protrusions and recesses, to align with the upper and lower housings of the housing assembly. Once correctly aligned, snap fasteners enable a snug fit and enhance the fit and finish of the hair clipper. The snap fasteners can be located on an inner surface of the drive cap, lower housing, and/or upper housing. A snap detent is located on the inner surface of an adjacent surface to receive the snap fastener. Using a combination of protrusions, extensions, voids, and recesses, in addition to the snap fasteners ensures a secure fit for the drive cap between the upper and lower housings. The snap fasteners couple the drive cap to upper and lower housings seamlessly along the outer surface of the hair clipper and facilitate quick release of the drive cap for maintenance or cleaning.

Abstract: The present disclosure relates to safety blades for use in utility knives, related assemblies and methods of manufacturing. More specifically, the present disclosure relates to safety blades for use in utility knives, related assemblies and methods of manufacture which limit user exposure to associated cutting edges.

Abstract: The cutting head assembly object of the present invention comprises a trimmer line feed mechanism and a trimmer line winding mechanism. A lower cover member coupled to the housing member and has a central opening to hold a ground engaging button member. The ground engaging button member is rotationally engaged to the spool and a lower cover. The upper section of the ground engaging button member and the internal walls of the cover ring have radially and axially extending structures which cooperate with each other to provide a ratcheting and indexing mechanisms that allows controlled rotation of the spool which is constrained from axial movement relative to the head enclosure by biasing the force of a compression spring which also maintains the ground engaging member in an extended position.

Abstract: A rope severing guard is engageable around a rope or flexible member to protect it from severing by a chainsaw cutting chain. The guard has a flexible body having a rope passage through which a protected rope is positioned. An interior cavity in the body of the rope severing guard is filled flexible fibers which if contacted by a moving cutting chain of a chainsaw, will form clogging engagements with the cutting chain and the chain support it moves upon or with the cutting chain and the motor drive gear powering it.