Abstract: An assembly for a percussion power tool includes a carrying handle (5) and a flush head (4) which is connected with the power tool chuck (3) for flushing a working tool receivable in the chuck and which has an inlet opening (12) for a flushing fluid and communicating with the working tool stem (2), the carrying handle (5) and the flush head (4) forming a functional unit.

Abstract: A support for supporting a power tool (3) on a displacement carriage (2) and including an attachment element (7) for connecting the power tool (3) with the carriage (2), and a bolt insertable into an eyelet (8) of the power tool (9) for releasably connecting the attachment element (7) with the power tool (3) with the bolt (6) having axial and radial conduits (12, 13) communicating with an outer cylindrical surface of the bolt (6), so that predetermined position of the bolt (6) in the eyelet (8), a drilling fluid can be delivered through the bolt (6) to fluid conduits (4) of the power tool (1).

Abstract: A percussion electrical tool including an electrical motor (6) located in a firedamp-protected housing (6), control electronics (4) for controlling operation of the electric motor (6); an inverted rectifier (5) connecting the control electronics (4) with the electric motor (6); an electronic module (9) located in the housing (3); an intermediate wall (7) for separating the electronic module (9) from a portion of a housing volume in which the electric motor (6) is located, connected with the inverted rectifier in a heat-conductive manner, and having a fluid-cooled cooling medium conduit.

Abstract: An arrangement for generating control commands for controlling the slats and landing flaps of an aircraft includes two manually operable command input levers which are arranged directly side-by-side or as a “rod-within-rod” and are connected respectively by two linkages to two rotatable sensor disks that respectively cooperate with two sets of signal emitters that are electrically connected respectively to two control computers. The two levers and two linkages are coupled to form a single command transducer having two coupled parallel command transmission paths. Based on the signals of the signal emitters, the control computers generate actuating signals that are provided to actuators for adjusting the positions of the slats and landing flaps.

Abstract: A cup-shaped drill head with an inner conical surface (2) for force-locking connection with an exterior conical surface (3) of a driving drill shaft (4), which at the leading end changes over into a cup base (5) with a center point (P), whereby in the change over from the cup base (5) to the inner conical surface (2) a lesser curvature (K) is present than at the center point (P).

Abstract: An arrangement of a motor (1) on twin landing gears (2a, 2b) is described. The landing gears (2a, 2b) are interconnected via a connecting shaft and can be telescoped by starting up the motor (1). To minimize damage to the motor and at the same time to ensure cost-effective production, it is provided that the motor (1) with its driveshaft (5) engages with the connecting shaft (4) and is supported on a component that is fixed relative to the motor (1).

Abstract: A rock drilling tool including a tip (3) formed of a hard material and provided at one end of the tool stem and a shank (4) provided at an opposite end of the stem (2) and having a plurality of entrain grooves (5) extending up to a free end surface of the shank (4), with an entire recessed surface (11) of an entrain groove (5) being larger than an entire outer surface (10) of a groove-forming rest web (6), and with a mean rest cross-sectional area (A′), which is measured within an axial section of the drilling tool having a length at least equal to a product of a natural logarithm base and a stem diameter (e×D), deviating from a mean rest cross sectional area (A) along the entire tool length maximum by 20%.

Abstract: A microvalve with a normally closed state includes a membrane (80), an actuation means (100) for controllable deformation of the membrane (80) as well as a valve shutter (180) deformable by the controllable deformation of the membrane (80). The valve shutter (180) at least partially opposes the membrane (80) and rests, in a first position in the normally closed state of the valve, along a sealing lip (130) arranged between the valve shutter (180) and the membrane. The sealing lip (130) is arranged such that an outlet of the valve, which outlet is in fluid communication with an interrupted section of the sealing lip (130), is sealed against an input channel (170) bordering on the valve shutter (180). In addition, the valve shutter is moldable into a second position so as to bring the outlet (140) into fluidic communication with the input channel (170) in an open state of the valve.

Abstract: A percussion mechanism of a hand-held power tool includes a reciprocating percussion piston (1) displaceable under the action of a pneumatic spring (5) to apply blows to an end surface of a working tool (8), which is received in a chuck (7) of the power tool, directly or via an anvil (6), with the percussion piston (1) and/or the anvil (6), when the anvil is used, being formed of a non-ferromagnetic material.

Abstract: A rock drill including a drilling rod (2), a cup-shaped drilling head (5) secured to the drilling rod (2) at one of its ends, and connection elements including at least one radially projecting, entraining web (8) associated with the drilling rod (2) and received in at least one axially extending entrain slot (9) which is formed in an entrain surface of the cup-shaped drilling head (5) for securing the drilling head (5) to the drilling rod (2) for joint rotation therewith and for a limited axial displacement relative thereto.

Abstract: An electric tool device (1) for an at least partially rotating and percussive striking driving mechanism with a pneumatic striking mechanism (2), which is driven over a gear assembly (9) by an electronically commutated electric motor (3) with an internal rotor (5) having poles (4) and an external stator (8), having field coils (7) connected with a DC-AC converter of control electronics (6), the power take-off side of the rotor shaft (10) being mounted in the gear assembly (9) and the driving end of the rotor shaft (10) with the freely protruding poles (4) engaging the stator (8), being introduced coaxially into the stator (8).

Abstract: A displacement and support device including a power cylinder (3) provided at its opposite ends, respectively, with an assembly element (7) for connecting the power cylinder with power tool and a support leg, a control valve (10) for controlling operation of the power cylinder (30), and a manually rotationally adjustable actuation member (9) for actuating the control valve (10), with the actuation member (9) being formed as a handle extending transverse to an axis (A) of the power cylinder and rotationally adjustable about a handle axis (B) within a rotational angle of 180° that encompasses an entire control region of the control valve (10).

Abstract: A drill head for rock drilling comprising cutting edges (1) made of hard material, which is detachably connected axially, over a bearing surface (3), with a drilling shaft (4) with at least one radially projecting driver blade (5a, 5b, 5c) by a bayonet-type connection slot (6a, 6b, 6c), wherein at least one connection slot (6a, 6b, 6c) is present, which forms two axially opposing undercuts (7a, 7b), within which the driver blade (5a, 5b, 5c) has limited axial movement.

Abstract: An electrical hand operated tool driving device (1), such as a hammer drill, a combination hammer or a chipping hammer, has an electropneumatic striking mechanism (2), for which a cooling medium (8), for cooling the striking mechanism (2), flows through a liquid-tight cooling medium duct (10, 11, 12, 13), which is disposed in a housing (7) of the tool driving device (1).

Abstract: A working tool for use with a percussion power tool and including a cushioning elongate stem (3), and a head (4) connected with the stem (3) for joint rotation therewith and for a limited axial displacement relative thereto, with the tool head (4) being adapted, with respect to its resistance associated with its cushioning properties, to characteristics of the percussion piston (5) of the power tool and with the tool stem (3) and the tool head (4) having mutually abutting each other end surfaces (10) which form at least a partially flat contact upon abutting each other.

Abstract: A drilling and/or chiseling tool (1) comprises a shaft (2) and a cylindrical insertion end (4) connected with the shaft (2) with at least one elongated recess (5 to 8), open toward the outer surface of and toward the free end of the insertion end (9) and forming a rotationally locking groove. A collar (3) is disposed between the shaft (2) and the insertion end (4) and extends at least partially around the tool (1) and projects at least radially outwardly of the shaft (2) and of the insertion end (4). The cylindrical insertion end (4)has a diameter not less than 18 mm and preferably larger than 22 mm. The at least one recess (5 to 8) has a cross-sectional area, extending perpendicularly to the axis of the tool (1), and expands toward the outer surface and is provided essentially in the form of an arc of a circle.

Abstract: A percussion electrical hand-held tool including a housing (10), a percussion element (2) located in the housing, and a planetary gear unit (5) located in the housing (10) for converting a rotational movement (107) of the drive shaft (&ohgr;) of the hand-held tool (8) into a reciprocating movement (&ugr;) of the percussion element (2), with the planetary gear unit (5) including a sun gear (6) changing of a setting (&agr;) of which provides for adjusting of an impact amplitude of the reciprocating movement (&agr;) of the percussion element (2), and control unit located in the housing (10) for adjusting the impact amplitude in accordance with a manual axial force applied to the handle of the hand-held tool (8).

Abstract: An electric tool device (1) for an at least partially rotating and percussive striking driving mechanism with a pneumatic striking mechanism (2), which is driven over a gear assembly (9) by an electronically commutated electric motor (3) with an internal rotor (5) having poles (4) and an external stator (8), having field coils (7) connected with a DC-AC converter of control electronics (6), the power take-off side of the rotor shaft (10) being mounted in the gear assembly (9) and the driving end of the rotor shaft (10) with the freely protruding poles (4) engaging the stator (8), being introduced coaxially into the stator (8).

Abstract: A percussion electrical tool including an electrical motor (6) located in an explosion-proof housing (6), control electronics (4) for controlling operation of the electric motor (6); an inverted rectifier (5) connecting the control electronics (4) with the electric motor (6); an electronic module (9) located in the housing (3); an intermediate wall (7) for separating the electronic module (9) from a portion of a housing volume in which the electric motor (6) is located, connected with the inverted rectifier in a heat-conductive manner, and having a fluid-cooled cooling medium conduit.

Abstract: A support for supporting a power tool (3) on a displacement carriage (2) and including an attachment element (7) for connecting the power tool (3) with the carriage (2), and a bolt insertable into an eyelet (8) of the power tool (9) for releasably connecting the attachment element (7) with the power tool (3) with the bolt (6) having axial and radial conduits (12, 13) communicating with an outer cylindrical surface of the bolt (6), so that predetermined position of the bolt (6) in the eyelet (8), a drilling fluid can be delivered through the bolt (6) to fluid conduits (4) of the power tool (1).