A pressing tool is described for plastically deforming a workpiece. The pressing tool comprises a piston pump driven by a motor that rotates in operating rotation direction RA and a pressure release valve and a coupling arrangement, which mechanically couples the motor to the pressure relief valve, so that the motor opens the pressure relief valve when operated in a loosening rotation direction RL opposite to the operating rotation direction RA. Also described is a corresponding method of operating a pressing tool.

An extraction apparatus includes an arm and an extractor head mechanically connected to a first end of the arm. The extractor head includes a housing that defines a channel, a switch within the channel, a fork member within the channel, and an actuator device mounted to the housing. The switch is configured to detect reception of a fastener pin being received within the channel. The fork member is movable relative to the housing. The actuator device is mechanically connected to the fork member, and is operatively connected to the switch. Responsive to the switch detecting the reception of the fastener pin in the channel, the actuator device is configured to automatically move the fork member linearly within the channel from a start position towards a displaced position causing the fork member to remove the fastener pin from a work piece.

An extraction apparatus includes an arm and an extractor head mechanically connected to a first end of the arm. The extractor head includes a housing that defines a channel, a switch within the channel, a fork member within the channel, and an actuator device mounted to the housing. The switch is configured to detect reception of a fastener pin being received within the channel. The fork member is movable relative to the housing. The actuator device is mechanically connected to the fork member, and is operatively connected to the switch. Responsive to the switch detecting the reception of the fastener pin in the channel, the actuator device is configured to automatically move the fork member linearly within the channel from a start position towards a displaced position causing the fork member to remove the fastener pin from a work piece.

A power tool for unlocking a releasable attachment pin from at least two ground covers includes at least one gripper carried by a carrier and selectively moveable relative to the carrier to grip a first portion of the attachment pin. At least one rotator also carried by the carrier is selectively rotatable relative to the first portion of the attachment pin to rotate a second portion of the attachment pin to unlock the attachment pin from the ground covers. A power-driven actuator associated with the carrier is operatively coupled to the rotator(s) and configured to selectively rotate the rotator(s).

A power tool for unlocking a releasable attachment pin from at least two ground covers includes at least one gripper carried by a carrier and selectively moveable relative to the carrier to grip a first portion of the attachment pin. At least one rotator also carried by the carrier is selectively rotatable relative to the first portion of the attachment pin to rotate a second portion of the attachment pin to unlock the attachment pin from the ground covers. A power-driven actuator associated with the carrier is operatively coupled to the rotator(s) and configured to selectively rotate the rotator(s).

A hydraulic implement (1) for portable use includes a hydraulic pump (2), a pump housing (10), a hydraulic cylinder (3) with a piston rod (11), a hydraulic tank (4), hydraulic lines, a compensating device, a manually operable hydraulic control valve (8), a rechargeable battery (9) which is accommodated on the implement (1), and two tool halves (16, 17) that are connected to the piston rod (11) via pivoting arms (12, 13). Each tool half (16, 17) has a wall section (20, 21) that extends perpendicularly to the extension of the longitudinal axis of the piston rod (11). When the tool halves are closed, both wall sections (20, 21) together form a flattened end region (24) that runs perpendicularly to the extension of the longitudinal axis of the piston rod (11).

A hydraulic implement (1) for portable use includes a hydraulic pump (2), a pump housing (10), a hydraulic cylinder (3) with a piston rod (11), a hydraulic tank (4), hydraulic lines, a compensating device, a manually operable hydraulic control valve (8), a rechargeable battery (9) which is accommodated on the implement (1), and two tool halves (16, 17) that are connected to the piston rod (11) via pivoting arms (12, 13). Each tool half (16, 17) has a wall section (20, 21) that extends perpendicularly to the extension of the longitudinal axis of the piston rod (11). When the tool halves are closed, both wall sections (20, 21) together form a flattened end region (24) that runs perpendicularly to the extension of the longitudinal axis of the piston rod (11).

In accordance with embodiments of the invention there is provided an extraction system, and extraction apparatus (30) and method therefore in for removing studs from sockets. The system is particularly advantageous for removing one or more studs (28) from the sockets (24) of bell cranks (16) of steering systems of vehicles such as an Off-highway Truck. In a particular arrangement the apparatus (30) comprises a frame member (32) adapted to be attached to a pivot joint (14) for extraction of the stud (28) from the socket (16). Furthermore, the apparatus 30 comprises actuator means (34) adapted to be selectively displaced between an extended condition and a contracted condition for applying a force to the stud (28) so as extract or at least loosen the stud (28) from the socket (36). In a particular arrangement, the actuator (34) comprises a hydraulic actuator. The system is adapted to remotely operate the extraction apparatus (30).

An adapter assembly is provided for converting a first oscillating motion from an oscillating tool to a second oscillating motion at a wheel that is useful for applying polymers and other films to doors, windows, and other surfaces or for applying rubber gaskets around a window during installation of the window. The adapter assembly is provided with an adapter that tapers in the anterior direction when attached to an oscillating tool. An axle is provided at the distal end of the adapter and attaches to a concentrically aligned bearing within the wheel.

An adapter assembly is provided for converting a first oscillating motion from an oscillating tool to a second oscillating motion at a wheel that is useful for applying polymers and other films to doors, windows, and other surfaces or for applying rubber gaskets around a window during installation of the window. The adapter assembly is provided with an adapter that tapers in the anterior direction when attached to an oscillating tool. An axle is provided at the distal end of the adapter and attaches to a concentrically aligned bearing within the wheel.