Abstract: The present blade device invention comprises an elongated housing wherein the housing comprises forward and rearward end portions and wherein the forward end portion defines an opening. The invention further comprises a blade holder moveable along a length of the housing toward the forward end portion and an actuator moveable along the length of the housing toward the forward end portion wherein the actuator is associated with the blade holder to impart movement to the blade holder toward the forward end portion of the housing. The invention further comprises a projection secured to one of the blade holder and the actuator wherein the projection extends in a direction transverse to the length, wherein the projection comprises a control surface which extends in a direction nonparallel to the length, wherein the other of the actuator and the blade holder to which the projection is not secured contacts the control surface and wherein the blade holder is movable in the direction nonparallel to the length.

Abstract: A blade holding device comprising a housing and a blade holder positioned within the housing wherein the blade holder is movable in a direction along a length of the housing. The device also comprises an actuator positioned within the housing and associated with the blade holder to move the blade holder along the length of the housing wherein the actuator moves parallel to the blade holder within the housing. Another embodiment of the blade holding device comprises a housing and a blade holder wherein the blade holder is adapted to move in a direction within the housing. An actuator associated with the blade holder for moving the blade holder in the direction and a control surface connected to a rearward end portion of the housing and positioned in a direction nonparallel to the direction in which the blade holder travels wherein the control surface is associated with the coupling arm.

Abstract: Presented and described inter alia is a knife comprising a housing (11) and a blade carrier (12) holding a knife blade (13), which is movable between a protected position in which the knife blade (13) is disposed inside the housing (11), and a cutting position in which the knife blade (13) projects from the housing (11), wherein the blade carrier (12) is loaded by a restoring element (18) into the protected position, comprising an actuating device (14) to move the blade carrier (12) from the protected position into the cutting position, wherein at least one coupling device is provided for detachable movement connection of the actuating element (14) and the blade carrier (12). The particular feature is that the coupling element (21) and the counter-coupling element (25) are configured to be immovably rigid.

Abstract: A blade holding device comprising a housing and a blade holder positioned within the housing wherein the blade holder is movable in a direction along a length of the housing. The device also comprises an actuator positioned within the housing and associated with the blade holder to move the blade holder along the length of the housing wherein the actuator moves parallel to the blade holder within the housing. Another embodiment of the blade holding device comprises a housing and a blade holder wherein the blade holder is adapted to move in a direction within the housing.

Abstract: The present blade device invention comprises an elongated housing wherein the housing comprises forward and rearward end portions and wherein the forward end portion defines an opening. The invention further comprises a blade holder moveable along a length of the housing toward the forward end portion and an actuator moveable along the length of the housing toward the forward end portion wherein the actuator is associated with the blade holder to impart movement to the blade holder toward the forward end portion of the housing. The invention further comprises a projection secured to one of the blade holder and the actuator wherein the projection extends in a direction transverse to the length, wherein the projection comprises a control surface which extends in a direction nonparallel to the length, wherein the other of the actuator and the blade holder to which the projection is not secured contacts the control surface and wherein the blade holder is movable in the direction nonparallel to the length.

Abstract: A holster for a hand tool has an annular upper collar defining an upwardly open mouth, a clip for securing the collar to an article of clothing of a user and a floor spaced below the collar. A front wall, a back wall, and a pair of side walls extend vertically between and are connected to the collar and the floor and define therewith an upwardly open tool-receiving spaced closed downwardly by the floor. One of the walls is elastically deformable and has an inwardly projecting bump engageable with a tool in the space.

Abstract: A knife has a blade-carrying blade slide and a separate actuator slide, both urged by springs into rear positions. A transversely displaceable coupling member on one of the slides is engageable with the other of the slides for coupling the blade slide with the actuator slide for movement of the blade slide from its retracted position into its intermediate position on displacement of the actuator slide from its rear end position into its front end position and for decoupling the slides from each other and shifting transversely out of a path of the other slide on movement of the blade slide from its intermediate position into its extended position. Cam formations on the slides displace the blade slide into the extended position on exertion of a transverse force against the blade edge in the intermediate position of the blade.

Abstract: A knife has a blade-carrying blade slide and a separate actuator slide, both urged by springs into rear positions. A transversely displaceable coupling member on one of the slides is engageable with the other of the slides for coupling the blade slide with the actuator slide for movement of the blade slide from its retracted position into its intermediate position on displacement of the actuator slide from its rear end position into its front end position and for decoupling the slides from each other and shifting transversely out of a path of the other slide on movement of the blade slide from its intermediate position into its extended position. Cam formations on the slides displace the blade slide into the extended position on exertion of a transverse force against the blade edge in the intermediate position of the blade.

Abstract: A razor-knife housing has a neat part retaining a blade and displaceable in the housing through a front-end slot between an extended position with the blade mainly outside the housing and a retracted position with the blade wholly inside the housing. A retaining part in slidable on the seat part between a closed position overlying the blade and holding it on the seat part and an open position exposing the blade on the formation and allowing it to be removed therefrom. The parts have faces normally engageable with each other to prevent sliding of the retaining part on the seat part. One of the faces is displaceable transversely to the other to allow the parts to slide relative to each other. In the extended position of the seat part and open position of the retaining part, the blade is is not retained on the seat part by the retaining part.

Abstract: A utility knife has a flat blade formed with at least one throughgoing hole, a housing member forming a seat adapted to receive the blade, and a retainer member engageable with the blade on the seat. A pair of respective pivot elements on the housing and retainer members allow pivoting of the retainer member between a closed position engaging the blade and holding it against the seat and an open position exposing the blade and permitting its removal from the seat. Respective threadedly interengageable holding elements including a threaded screw on one of the members extending through the hole of the blade and a nut on the other of the members secure the retainer member in the closed position. The threaded screw is fixed in the housing member and has a threaded shaft projecting up from the seat. The nut is rotatable on the retainer member. The retainer member is formed with a large-diameter recess receiving the nut with radial play.

Abstract: A knife has an elongated handle having a front end, a longitudinally extending flat blade secured in the handle, projecting from the front end, and having a transverse front edge and a longitudinally extending side cutting edge meeting at a point, and a blade guard longitudinally displaceable on the handle between an outer extended position projecting longitudinally outward of the point and a retracted position exposing the point. A guard spring braced between the guard and the handle urges the guard into the extended position. A button is transversely displaceable on the handle between an actuated and an unactuated position and interengageable formations on the button and on the guard prevent movement of the guard from the extended into the retracted position in the unactuated position of the button.

Abstract: A knife has a housing and a blade slide carrying a blade and displaceable longitudinally in the housing between a rear retracted end position with the blade wholly received in the housing and a front extended end position with the blade extending forward from the housing and through an intermediate position. A spring urges the blade slide continuously rearward into the retracted position. An actuator slide is displaceable in the housing independently of the blade slide between a front end position and a rear end position and through an intermediate position and is provided with an externally accessible actuating formation. Another spring urges the actuator slide continuously into the rear position.

Abstract: A knife has an elongated handle having an outer end and a longitudinally extending flat blade secured in the handle and projecting from the outer end. The blade has a transverse outer edge and a longitudinally extending side cutting edge meeting at a point. The handle is formed with a pair of longitudinally outwardly open and longitudinally extending guides flanking the blade adjacent the cutting edge thereof. Respective longitudinally extending pins having generally parallel and transversely projecting outer ends sections are longitudinally displaceable in the guides between extended positions with the outer end sections lying longitudinally outward of the point and retracted positions with the outer end sections longitudinally rearward of the point and the blade passing between the outer end sections. Respective springs braced between the pins and the handle urge the pins into the extended positions.

Abstract: A utility knife for use with a flat blade having a pair of opposite faces has an elongated base part formed with an outwardly directed rear support surface, an outwardly directed front support surface separated longitudinally therefrom, and an inwardly directed intermediate surface between the support surfaces. The blade normally lies on the front support surface and projects longitudinally forward past the base part. An elongated cover part has an inwardly directed rear surface normally riding on the base-part rear support surface, an inwardly directed front surface normally pressing the blade inward against the base-part front support surface, and an outwardly directed intermediate surface. The cover part is displaceable longitudinally between one longitudinal end position with the intermediate surfaces transversely confronting each other and another longitudinal end position with the intermediate surfaces transversely out of alignment with each other.

Abstract: A knife has an elongated body having a front end formed with a forwardly projecting trapezoidal-section tongue having a pair of side surfaces and a base surface bridging the side surfaces and a holder formed with a complementary trapezoidal-section slot having a pair of side surfaces extending parallel to and longitudinally slidable on the body side surfaces and a base surface bridging the holder side surfaces, extending parallel to the body base surface, spacedly confronting the body base surface, and forming therewith a blade seat. The tongue and groove have widths measured parallel to the base surfaces and transversely of the elongated body that decrease uniformly forward so that the side surfaces converge forward. A blade is gripped between the base surfaces and projecting forward from the body and holder.

Abstract: An autoretracting box-cutting knife has a housing dimensioned to be held in the hand and having a longitudinally forwardly projecting front end, a blade slide displaceable longitudinally in the housing between a front position and a rear position, and a blade secured in the slide, projecting forward from the housing in the front position of the slide, and retracted back into the housing in the rear position of the slide. In accordance with this invention a blade-actuating crank has an inner and an outer end and is mounted on a pivot on the housing that defines for the crank a transverse pivot axis. Interengaging formations on the crank and holder offset from the pivot can move the crank with the holder between a rear position with its outer end projecting laterally from the housing in the rear position of the holder and a front position in the front position of the holder.

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 device for marking the height above the floor of the edges of articles of clothing in which a force accumulator is charged and released upon actuation of a cloth-pressing lever which drives a pin into the cloth from a pin magazine.