In order to design the positional displacement of the impact member structurally simple and operationally reliable in an impact crusher having a rotor 9 and an impact member provided in the housing in an adjustable position directly underneath the feed aperture of the material to be crushed, the impact member is provided with an impact plate linearly displaceable in relation to the rotor.

An impact mechanism for use in an impact printer, to deliver a printing force to drive a character element against a platen by means of a print tip movable toward and away from the platen. A rockable bail bar having an axis of rotation substantially parallel to the axis of the platen is constrained to limited angular movement toward and away from the platen by a prime mover connected to the bail bar. A push rod interconnects the print tip and the bail bar for delivering impact forces to the plat...

An impact mechanism for use in an impact printer, to deliver a printing force to drive a character element against a platen by means of a print tip movable toward and away from the platen. A rockable bail bar having an axis of rotation substantially parallel to the axis of the platen is constrained to limited angular movement toward and away from the platen by a prime mover connected to the bail bar. A push rod interconnects the print tip and the bail bar for delivering impact forces to the plat...

An impact mechanism for use in an impact printer, to deliver a printing force to drive a character element against a platen by means of a print tip movable toward and away from the platen. A rockable bail bar having having an axis of rotation substantially parallel to the axis of the platen is constrained to limited angular movement toward and away from the platen by a prime mover connected to the bail bar. A push rod interconnects the print tip and the bail bar so as to close the throat distanc...

An impact head particularly suited for use with hand-held pneumatically operated impact tools, characterized by a metallic core having a base portion including therein a screw-threaded, axial bore adapted for use in coupling the impact head with an impact tool, and a coaxially related distal portion including a circumscribing annular rib embedded in an impact block formed of an homogeneous mass of synthetic resin. A particular feature of the impact head resides in an annular array of openings ex...

An impact strip for impact pulverizers for crushing hard materials, the strip being made of an iron-chromium-carbon alloy. such alloy may, for example, consist of 0.6 to 3.5 percent carbon to 5 to 30 percent chromium, up to 2 percent nickel, up to 3 percent molybdenum, up to 2 percent manganese, and up to 2 percent silicon, the rest iron and impurities. The edges or edge regions of the impact strip to be subjected to impact and wear are reinforced with plates of sintered hard metal.

A control for impact wrenches and method in which a predetermined number of impacts are delivered after the wrench has applied a predetermined torque.

An impact wrench (1) having a handle (3), an arm (7) pivotally connected to the handle (3) and of unitary construction with the handle (3), and a key (11) on the arm (7) for coupling with a keyseat of a wrench tool, such as a socket of a socket wrench. An impact surface (2) is located at an upper end of the handle (3) and has an impact-resistant cap (5). In use, a socket is fitted to the key (11) and placed into engagement with a nut or bolt which needs to be loosened. Striking the cap (5) with ...

An impact instrument for delivering an impulse to an object. The impact instrument may include an impact surface for contacting the object and an elongated member extending from the impact surface that terminates in an end. The elongated member may include a grasping region in the vicinity of the end. When the instrument is grasped within the grasping region, the center of percussion of the instrument preferably coincides with the impact surface. The instrument may also contain a pivoting graspi...

An impact tool, comprising: a shaft; a stop on the shaft; a slider movable on the shaft for striking the stop to create an impact force; and a handle on the slider to allow a user to move the slider. The handle isolates the impact force from the user by being movably attached to the slider.