Abstract: A knife includes a handle body defining an interior blade-slide cavity housing a blade slide carrying a blade with a cutting edge. The blade slide is reciprocated within the blade-slide cavity between a blade-storage position in which the cutting edge is housed within the handle body and at least two blade-protruding positions in which the cutting edge protrudes to the exterior of the handle body, through a forward-end opening, to disparate extents. Blade-slide reciprocation is facilitated by a blade-slide actuator that includes a button reciprocable along an actuator slot defined through the handle body. A handle-body undulated surface defined along the handle body in the vicinity of the actuator slot is configured for selective mechanical interference with a button undulated surface in order to define the at least two blade-protruding positions. A blade-protruding position is temporarily maintained through a user's depression of the button to maintain the selective interference.

Abstract: A knife includes a handle body defining an interior blade-slide cavity housing a blade slide carrying a blade with a cutting edge. The blade slide is reciprocated within the blade-slide cavity between a blade-storage position in which the cutting edge is housed within the handle body and at least two blade-protruding positions in which the cutting edge protrudes to the exterior of the handle body, through a forward-end opening, to disparate extents. Blade-slide reciprocation is facilitated by a blade-slide actuator that includes a button reciprocable along an actuator slot defined through the handle body. A handle-body undulated surface defined along the handle body in the vicinity of the actuator slot is configured for selective mechanical interference with a button undulated surface in order to define the at least two blade-protruding positions. A blade-protruding position is temporarily maintained through a user's depression of the button to maintain the selective interference.

Abstract: A circular cutting blade is configured for cutting meat when turned about a rotation axis in a predetermined cutting direction. The cutting blade has a peripheral blade edge defined between the first and second sides and a plurality of circumferentially disposed cutting knives. Each cutting knife includes first and second knife sides and an arcuate knife edge that constitutes a portion of the peripheral blade edge. Each knife edge is titled and rises, relative to the rotation axis, between a first blade-edge location corresponding to a minor blade radius and a second blade-edge location corresponding to a major blade radius such that, when the circular blade is rotating in the predetermined cutting direction and cutting a work piece, the work piece first encounters the first blade-edge location of each cutting knife before encountering the second blade-edge location of that cutting knife.

Abstract: A conduit-coupling adaptor configured for mutually joining conduits of disparate diameters includes a central conduit with interior and exterior surfaces extending longitudinally between central-conduit first and second ends. The central-conduit first and second ends define, respectively, first-end and second-end coupling sleeves that extend longitudinally in opposite directions and terminate at, respectively, first and second openings. The coupling sleeves can be implemented, alternatively, as male or female coupling members relative to other conduits. A first-end skirt includes a skirt wall concentrically disposed about at least a lengthwise portion of the central-conduit first end. The skirt wall has skirt-wall inside and outside surfaces that longitudinally co-extend with at least a portion of the first-end coupling sleeve and are joined to the central-conduit wall by a shoulder.

Abstract: A fluid sprayer includes a rigid fluid conduit extending along a conduit axis between longitudinally opposed open conduit first and second ends. A spray nozzle having a fluid-expulsion bore is connected to the conduit second end such that the nozzle can pivot about a nozzle-pivot axis that extends orthogonally to the conduit axis and fluid introduced into the conduit first end is expelled through the fluid-expulsion bore. An attachment-mounting arm is connected to the fluid conduit for pivotal movement about an arm-pivot axis having a component of spatial extension orthogonal to the conduit axis and being longitudinally non-displaceable relative to the rigid fluid conduit. Moreover, the attachment-mounting arm is selectively lockable into a plurality of discrete angular positions relative to the conduit and configured to removably retain a surface-engaging attachment designed for engaging a surface to be cleaned.

Abstract: A circular cutting blade is configured for cutting meat when turned about a rotation axis in a predetermined cutting direction. The cutting blade has a peripheral blade edge defined between the first and second sides and a plurality of circumferentially disposed cutting knives. Each cutting knife includes first and second knife sides and an arcuate knife edge that constitutes a portion of the peripheral blade edge. Each knife edge rises, relative to the rotation axis, between a first blade-edge location corresponding to a minor blade radius and a second blade-edge location corresponding to a major blade radius and further includes beveled primary and secondary knife-edge portions along which the first and second knife sides mutually converge at, respectively, a first bevel angle and a second bevel angle less acute than the first bevel angle.

Abstract: A sponge sander configured for selective attachment to a dust-collection system includes a housing having a housing-interior surface defining a sponge cavity and a sponge seat configured for removably retaining a determinately-dimensioned sanding sponge. The sponge has an abrasive sanding surface, a back surface opposite the sanding surface and a sponge periphery defined between the sanding and back surfaces. The sponge is retained within the sponge cavity such that (i) the abrasive sanding surface can engage a work surface to be sanded, (ii) fluid-flow channels are maintained between the sanding sponge and the housing-interior surface and (iii) the spaces are in fluid communication with a fluid port defined in the housing so that when a negative pressure is applied across the fluid port by a vacuum system external to the housing, dust created by sanding is drawn into the fluid-flow channels and out of the housing through the fluid port.

Abstract: A dual-bladed scraper includes a handle extending between a proximal end including a grip portion and a distal end extending forwardly of the proximal end. A blade-retaining head is rotatably mounted to the distal end for pivotal movement about a head-rotation axis. The head has opposed first and second ends configured for retaining, respectively, first and second scraping blades on mutually opposite sides of the head-rotation axis about which the head is pivotable between first and second angular positions. The first angular position is such that the first blade is in a deployed attitude and the second blade is shrouded in a non-deployed attitude beneath the handle. Conversely, the second angular position is such that the second blade is in a deployed attitude and the first blade is shrouded in a non-deployed attitude beneath the handle.

Abstract: A bladed tool includes a handle and a blade with a surface-engaging edge and a blade-retaining shank. The handle includes an elongated handle body having longitudinally opposed body front and rear ends, and at least one side wall extending between the body front and rear ends. The side wall defines an outer surface configured for gripping by a user and an inner surface that defines an interior access channel extending from an access opening in the body rear end toward a forward channel wall located to the rear of the body front end. Situated between the body front end and the forward channel wall is a handle core that defines a shank-retaining slot extending between a forward slot-opening in the body front end and a rearward slot-opening in the forward channel wall. The shank extends rearwardly through the shank-retaining slot such that a protruding shank portion extends to the rear of the forward channel wall.

Abstract: A fluid sprayer includes a rigid fluid conduit with a conduit side wall extending along a conduit axis between open first and second conduit ends. The conduit side wall defines a fluid passage extending between the open first and second ends. A spray nozzle with a fluid-expulsion bore is connected to the second conduit end such that it can pivot about a nozzle-pivot axis that extends orthogonally to the conduit axis and such that fluid introduced into the first conduit end is expelled through the fluid-expulsion bore. A nozzle actuator is attached to the conduit for bi-directional rotation about an actuator-rotation axis having a component of spatial extension perpendicular to the conduit axis. The nozzle actuator and nozzle are mechanically linked so that rotation of the actuator causes the nozzle to pivot with respect to the conduit axis. A spray-angle selector rotates in tandem with the nozzle actuator and includes an angle-selection surface.

Abstract: A modular coatings sprayer includes a valve housing in which there is defined a nozzle orifice and a valve-shaft bore opposite the nozzle orifice. A housing side wall extends between the orifice and bore and defines an internal fluid passage. The side wall includes an opening through which pressurized fluid is introduced into the fluid passage. A valve including a valve shaft with opposed back and nozzle-closing ends is sealably supported within the bore such that (i) the nozzle-closing end is situated within the housing and the back end is situated external to the housing and (ii) the valve shaft can axially reciprocated between a first position in which the nozzle-closing end does not seal the nozzle orifice and a nozzle-closing position in which the nozzle-closing end seals the nozzle orifice such that pressurized fluid within the fluid passage is prevented from exiting through the nozzle orifice.

Abstract: A retractable blade scraper includes a handle body having a handle rear end and a handle forward end including a forward-end opening. An internal blade-slide cavity extends rearwardly from the forward-end opening toward the handle rear end and is configured to selectively receive a blade through—the forward-end opening. A blade slide housed by the blade-slide cavity includes lower and upper blade slide members between which the blade is selectively retained. A blade-slide actuator is accessible through an actuator slot defined through a wall of the handle body between slot first and second ends. Reciprocation of the actuator between the slot first and second ends reciprocates the blade slide between a rearward blade-storage position in which the blade is housed in the blade-slide cavity and a forward blade-changing position in which the blade protrudes through the forward-end opening to facilitate blade changing.