Abstract: It is provided a method for providing data for training a machine learning model. The method is performed in a training data provider (1) and comprises the steps of: obtaining (40) a data structure comprising a chain of delegations, the chain of delegations covering a delegation path from a media capturing device (3) to the training data provider (1) such that, in the chain of delegations, each delegation is a delegation from a delegator to a receiver; sending (42) a key request to a delegation verifier (2), the key request comprising the data structure; receiving (44) a decryption key from the delegation verifier (2); obtaining (46) encrypted media data captured by the media capturing device (3); decrypting (48) the encrypted media data, resulting in decrypted media data; and providing (50) the decrypted media data for training the machine learning model.

Abstract: An arrangement (16) for controlling movements of an access member (12) relative to a frame (14), the arrangement (16) comprising abase section (18) for connection to either the access member (12) or the frame (14); a fixation part (20) for connection to the other of the access member (12) and the frame (14); a flexible elongated element (22) configured to be tensioned to thereby force the base section (18) and the fixation part (20) to move towards each other in a relative closing movement (86); and a braking device (82) arranged to brake a speed of the relative closing movement (86).

Abstract: A manipulator for controlling a locking function and a maneuvering function of an access member rotatably coupled to a frame is disclosed. The manipulator includes an actuator configured to provide a substantially linear first actuating movement in a first direction and a substantially linear second actuating movement in a second direction, opposite to the first direction; a latch bolt functionally coupled to the actuator, the latch bolt arranged to move to an unlocking position in response to movement of the actuator in the first direction and arranged to move to a locking position in response to movement of the actuator in the second direction; and a transmission mechanism functionally coupled to the actuator, the transmission mechanism configured to transmit the first actuating movement in the first direction provided by the actuator to an opening movement of the access member. An access member, a system and a method are also provided.

Abstract: Actuator (10) comprising a base section (14,14a,14b); a permanent magnet (18,18a,18b); an electro permanent magnet (20, 20a, 20b); a coil (22, 22a, 22b) located around the electro permanent magnet (20, 20a, 20b); a power controller (24, 24a, 24b); and a movable member (28) comprising at least one magnetic target section (36), the movable member (28) being arranged to move to a first position (12) relative to the base section (14,14a,14b), when the electro permanent magnet (20, 20a, 20b) adopts a first polarity, and arranged to move to a second position (46) relative to the base section (14,14a,14b) due to a magnetic field generated by the permanent magnet (18,18a,18b) and the electro permanent magnet (20, 20a, 20b) in combination and acting on the magnetic target section (36), when the electro permanent magnet (20, 20a, 20b) adopts a second polarity. A lock device (50), a handle device (86) and a method are also provided.

Abstract: Actuator (10) comprising a base section (14,14a,14b); a permanent magnet (18,18a,18b); an electro permanent magnet (20, 20a, 20b); a coil (22, 22a, 22b) located around the electro permanent magnet (20, 20a, 20b); a power controller (24, 24a, 24b); and a movable member (28) comprising at least one magnetic target section (36), the movable member (28) being arranged to move to a first position (12) relative to the base section (14,14a,14b), when the electro permanent magnet (20, 20a, 20b) adopts a first polarity, and arranged to move to a second position (46) relative to the base section (14,14a,14b) due to a magnetic field generated by the permanent magnet (18,18a,18b) and the electro permanent magnet (20, 20a, 20b) in combination and acting on the magnetic target section (36), when the electro permanent magnet (20, 20a, 20b) adopts a second polarity. A lock device (50), a handle device (86) and a method are also provided.

Abstract: Manipulator (16) for controlling a locking function and a manoeuvring function of an access member (14) rotatably coupled to a frame (12), the manipulator (16) comprising an actuator (26) configured to provide a substantially linear first actuating movement in a first direction (48) and a substantially linear second actuating movement in a second direction (50), opposite to the first direction (48); a latch bolt (24) functionally coupled to the actuator (26), the latch bolt (24) arranged to move to an unlocking position in response to movement of the actuator (26) in the first direction (48) and arranged to move to a locking position in response to movement of the actuator (26) in the second direction (50); and a transmission mechanism (28) functionally coupled to the actuator (26), the transmission mechanism (28) configured to transmit the first actuating movement in the first direction (48) provided by the actuator (26) to an opening movement of the access member (14).

Abstract: A method of verifying a magnitude of a delivered output torque during a tightening operation of a threaded joint performed by a hand held power wrench including a housing, a motor, an output shaft, and a power transmission connecting the motor to the output shaft. The method includes: tightening the threaded joint; monitoring a magnitude of a direct torque acting along the power transmission during the tightening by at least one direct torque indicating sensor; monitoring a magnitude of a reaction torque transferred via the housing during the tightening by at least one reaction torque sensor; comparing the monitored magnitude of the direct torque with the monitored magnitude of the reaction torque; and determining, based on the comparison, whether the accuracy of the delivered output torque is acceptable.

Abstract: A power tool including: a motor; a shaft for delivering a torque to a joint or the like, the shaft being drivingly connected to the motor; and a housing that at least partly houses the motor and the shaft. The shaft includes a longitudinal cavity in which a torque transducer is arranged to measure a torque acting over a portion of the shaft, wherein the longitudinal cavity includes: a first contact surface for torque transferring contact with a first end portion of the torque transducer; and a second contact surface, separated from the first contact surface, for torque transferring contact with a second end portion of the torque transducer, the portion over which the torque is measured being located between the first and second contact surfaces.

Abstract: A method of verifying a magnitude of a delivered output torque during a tightening operation of a threaded joint performed by a hand held power wrench including a housing, a motor, an output shaft, and a power transmission connecting the motor to the output shaft. The method includes: tightening the threaded joint; monitoring a magnitude of a direct torque acting along the power transmission during the tightening by at least one direct torque indicating sensor; monitoring a magnitude of a reaction torque transferred via the housing during the tightening by at least one reaction torque sensor; comparing the monitored magnitude of the direct torque with the monitored magnitude of the reaction torque; and determining, based on the comparison, whether the accuracy of the delivered output torque is acceptable.

Abstract: The invention relates to an emergency stop device for a power tool comprising an electrical power contact for releasably connecting a power source to the power tool, and an emergency stop circuit connected to the electrical power contact and configured to disconnect the electrical contact from the electrical power source upon receipt of an emergency stop signal by the emergency stop circuit. The invention further relates to a power tool, a system comprising such a tool and a method of performing emergency stop of a power tool.

Abstract: A regulator for a power tool for tightening a fastener in order to unite two or more pieces into a joint. The regulator regulates the power tool when tightening the fastener such that the fastener is tightened to a predetermined target. The regulator calculates an output signal to the power tool, which output signal is based on the product of the torque exerted by the power tool on the fastener and the angle for turning the fastener about its axis. The output signal is used for tightening the fastener to the predetermined target. The regulator is also applicable to a power tool for a rivet joint.

Abstract: An electric power wrench for fastening and loosening joints includes: a main shaft for delivering a torque to a joint, an electric motor that is arranged to selectively drive the main shaft in two opposed rotational directions, a control unit for controlling the drive of the electric motor, and a transmission that connects the electric motor to the main shaft. The control unit has a first drive mode in which it controls the electric motor such that it delivers a continuous torque in a forward direction, and delivers torque pulses in an opposite backward direction, wherein the transmission includes an inherent play and wherein the torque pulses are produced in said play.

Abstract: A power tool including: a motor; a shaft for delivering a torque to a joint or the like, the shaft being drivingly connected to the motor; and a housing that at least partly houses the motor and the shaft. The shaft includes a longitudinal cavity in which a torque transducer is arranged to measure a torque acting over a portion of the shaft, wherein the longitudinal cavity includes: a first contact surface for torque transferring contact with a first end portion of the torque transducer; and a second contact surface, separated from the first contact surface, for torque transferring contact with a second end portion of the torque transducer, the portion over which the torque is measured being located between the first and second contact surfaces.

Abstract: An electric power wrench for fastening and loosening joints includes: a main shaft for delivering a torque to a joint, an electric motor that is arranged to selectively drive the main shaft in two opposed rotational directions, a control unit for controlling the drive of the electric motor, and a transmission that connects the electric motor to the main shaft. The control unit has a first drive mode in which it controls the electric motor such that it delivers a continuous torque in a forward direction, and delivers torque pulses in an opposite backward direction, wherein the transmission includes an inherent play and wherein the torque pulses are produced in said play.

Abstract: A portable power wrench is controlled by an operation control unit and comprises a housing (10;50) with a rotation motor, a gear casing (15;55) including a gearing (18;56,57) and a drive spindle (19;60} and being releasably and/or rotatably connected to the housing via a swivel or multi-position connection, an operation parameter sensing device (22,23;68) is associated with the drive spindle (19,60). The sensing device (22,23;68) communicates with the operation control unit via a first signal transferring device (28;82) which is disposed between the drive spindle (19;60) and the gear casing (15;55), and a second signal transferring device (31;84) is disposed between the gear casing (15;55) and the housing (10;50), wherein the second signal transferring device (31;84) communicates with the operation control unit. At least the first signal transferring device (28;82) between the drive spindle (19;60) and the gear casing (15;55) comprises a contact free transfer device.

Abstract: A portable power drill includes a housing, a drilling implement carrying drive spindle, and a drive motor for rotating and axially feeding the drive spindle. The drive spindle is rotatively and axially displaceable relative to the housing and connected to the drive motor via angle gears, a feed mechanism and two bevel gears supported on the drive spindle. The drive motor is drivingly connected to the drive spindle via a belt drive transmission, a feed shaft, and an angle gear including an axially locked but rotative nut piece. The feed shaft is located in parallel with and coupled to the drive motor via a transmission and drivingly connected to said nut piece. The drive motor is an electric motor controlled and monitored by a programmable control unit.

Abstract: A portable power drill comprises a housing, a drilling implement carrying drive spindle, and two individually powered and controlled motors for rotating and axially feeding the drive spindle. The drive spindle is rotative and axially displaceable relative to the housing and connected to the drive and feed motors via angle gears including two bevel gears supported on the drive spindle. The feed via an axially locked but rotative nut piece and an external thread on the drive spindle, whereas the drive motor is drivingly connected to the drive spindle via longitudinal keyways on the drive spindle and mating splines in one of the bevel gears. The drive motor and the feed motor are electric motors controlled and monitored by a programmable control unit.

Abstract: An electric assembly device for tightening of fastener includes a housing and a rotation. motor which is drivingly connected to an output shaft. The output shaft has a forward portion extending out of the housing, and is adapted to carry a coupling device for releasable coupling with a fastener during tightening, which is to be performed along a first rotation axis. The device is adapted to determine an angular displacement of the housing with respect to the first rotation axis during tightening of the fastener, and to control the rotation speed of the motor during tightening based on the determined angular displacement of the housing.

Abstract: A portable power wrench is controlled by an operation control unit and comprises a housing (10;50) with a rotation motor, a gear casing (15;55) including a gearing (18;56, 57) and a drive spindle (19;60) and being releasably and/or rotatably connected to the housing via a swivel or multi-position connection, an operation parameter sensing device (22, 23;68) is associated with the drive spindle (19, 60). The sensing device (22, 23;68) communicates with the operation control unit via a first signal transferring device (28;82) which is disposed between the drive spindle (19;60) and the gear casing (15; 55), and a second signal transferring device (31; 84) is disposed between the gear casing (15;55) and the housing (10;50), wherein the second signal transferring device (31; 84) communicates with the operation control unit. At least the first signal transferring device (28;82) between the drive spindle (19;60) and the gear casing (15;55) comprises a contact free transfer device.

Abstract: A multi conductor flat type cable, which is intended for connecting a portable electric power tool to a stationary power supply and operation control unit, has a connector plug (18) attached to its one end, wherein the cable (10) has a twisted shape section (A) adjacent the connector plug (18) for facilitating universal bending of the cable (10). The twisted section (A) is provided with a transition sleeve (16) with a cylindrical portion (17) at the connector plug end and two tapering tongues (20, 21) extending along the cable (10) over at least a part of the twisted section (A), wherein the cable (10) is adapted to the cylindrical shape of the connector plug (18) and strengthened against too close bending in the twisted section (A). The transition sleeve (16) is molded onto the cable (10) in a first manufacturing step, and in a second step the cable (10) together with the transition sleeve (16) are heated to a certain temperature and twisted to assume the twisted shape in the section (A).