Abstract: A rinsing liquid treatment device (2), an expansion module (12) and an adapter module (9) for a rinsing liquid circuit closed in the flow circuit of a rinsing liquid comprising a rock working tool (1) and having a feed line (3), a catch trough (4), a transport means (5) and an outflow (6), wherein the catch trough (4) is inside a wet suction device (7).

Abstract: A device for regulating an amount of liquid fed to a hand-held tool for treating a constructional component and including a base body (1) connectable to the hand-held tool (38), an outlet channel (2) extending parallel to an axis of the base body and an outlet opening of which is located in a region of the connection of the base body with the tool, an inlet channel (7) extending relative to the outlet channel at an angle from 20° to 90°, and a valve member (12) arranged in the base body (1) for connecting the inlet channel (7) with the outlet channel (2) and having a manually adjustable adjustment member (15).

Abstract: A chuck for an annular core bit (1) having an inner thread (2) includes a motor-driven rotatable spindle (4) having a threaded support (5) cooperating with the inner thread (2) for supporting the annular core bit (1), a stop member (7) associated with the axial stop flange (6) provided on the work spindle (4), locking wedge elements (9) for axially connecting the stop member (7) with the axial stop flange (6) under compressive strain, and a manually actuatable, displaceable release member (10) for displacing the locking wedge elements (9) between a position in which the locking wedge means (9) axially connects the stop member (7) and the axial stop flange (6) under compressive strain, and a position in which the stop member (7) is axially displaceable relative to the axial stop flange (6).

Abstract: An arrangement for transmitting a torque from a power tool to a working tool and including a shank forming part of the working tool and having following one another, in the operational direction of the working tool, first, second, third, and fourth regions (B1, B2, B3, B4), at least two drive grooves (3) extending parallel to a working tool axis over all of the shank regions (B1, B2, B3, B4), and at least one additional drive groove (4) extending in third and fourth regions (B3, B4) of the shank (2), with the arrangement further including a chuck (10) having an opening (13) for receiving the shank (2), at least one locking element (21) projecting into the receiving groove (13) for engagement into the circumferential groove (5) of the shank (2), at least two drive dogs (16) and an additional drive dog projecting into the receiving groove (13) for engagement in the first drive grooves (3) and the at least one additional drive groove (4).

Abstract: A device for rinsing bores (1) including comprising a rinsing head (2) insertable in a bore (1), a delivery channel (3) for delivery rinsing medium (4) to the rinsing head (2) and having at lest one outlet opening (6) in a region of the rinsing head (2), and a return channel (5) for returning the rinsing medium out of the bore (1) and having at least one return opening (7) in the region of the rinsing head (2).

Abstract: A device for regulating an amount of liquid fed to a hand-held tool for treating a constructional component and including a base body (1) connectable to the hand-held tool (38), an outlet channel (2) extending parallel to an axis of the base body and an outlet opening of which is located in a region of the connection of the base body with the tool, an inlet channel (7) extending relative to the outlet channel at an angle from 20° to 90°, and a valve member (12) arranged in the base body (1) for connecting the inlet channel (7) with the outlet channel (2) and having a manually adjustable adjustment member (15).

Abstract: An arrangement for transmitting a torque from a power tool to a working tool and including a shank forming part of the working tool and having following one another, in the operational direction of the working tool, first, second, third, and fourth regions (B1, B2, B3, B4), at least two drive grooves (3) extending parallel to a working tool axis over all of the shank regions (B1, B2, B3, B4), and at least one additional drive groove (4) extending in third and fourth regions (B3, B4) of the shank (2), with the arrangement further including a chuck (10) having an opening (13) for receiving the shank (2), at least one locking element (21) projecting into the receiving groove (13) for engagement into the circumferential groove (5) of the shank (2), at least two drive dogs (16) and an additional drive dog projecting into the receiving groove (13) for engagement in the first drive grooves (3) and the at least one additional drive groove (4).

Abstract: A drill bit having a drill body and a drill shank including a substantially cylindrical guide portion (10) having at least one guide surface (101, 102), and a locking portion (11) projecting radially beyond the guide portion and having locking surfaces (111, 112) extending substantially perpendicular to a longitudinal axis of the drill bit, with the locking portion (11) having, perpendicular to the drill bit longitudinal axis, a non-circular cross-section; and a drill chuck for receiving the shank.

Abstract: The present invention relates to a suction and discharge apparatus for a drilling fluid, which is used in material removing treatment of hard constructional components formed of concrete, stone, break work, and the like, and including at least two air- and liquid-tight reservoirs (1,2), with the first reservoir being connected with a vacuum-producing device (6) and a suction conduit (3), with the second reservoir (2) being connected with an overpressure-producing device (4) and a discharge conduit (4), and with both reservoirs (1, 2) being connected by a conduit (5).

Abstract: A drilling tool including a chuck (10) for receiving a drill (2), a cooling medium delivery conduit (3) for delivering a cooling medium to the drill (2), and a first valve (5) for controlling flow of the cooling medium through the delivery conduit (3) and having an inlet (50) and an outlet (51) a cross-section of which can be reduced to zero.

Abstract: A boring tool, including a housing part (3), a fisture (35) for transmitting a rotational movement to a borer, the transmitting fixture (35) being supported in the housing part and having a central receiving region (36) for receiving the borer (4), two, spaced from each other, bearing members (33, 34) for supporting the transmitting element (35) in the housing part (3), and an arrangement for enabling inclination of a longitudinal axis of the borer (4) relative to the housing part (3).

Abstract: An operating device for a hollow drill (1) including a housing (2), a drill receiving chuck (3) supported in the housing (2) for rotation relative thereto, a drive unit (4) for rotating the chuck (3), a bottom element adjoining the chuck (3) at a side of the chuck facing in a direction opposite to a drilling direction, and an arrangement for lifting the bottom element off the chuck (3).