Abstract: A method for producing an annular winding head support for a rotor of a rotating electric machine. In order to be able to produce a winding head support for particularly large machines in a simple manner, ring segments are created, after which the ring segments are connected to create a ring that constitutes the winding head support. In addition, the electric machine has a stator and a rotor, with the rotor including at least one winding head at an end side. A winding head support is provided in order to accommodate centrifugal forces occurring during operation.

Abstract: A rotor for an electric machine, including a laminated core with slots in which bottom bars and top bars are arranged to in an axial direction beyond the laminated core to form a winding overhang. A bottom bar of one slot is respectively connected to a top bar of another slot in the winding overhang and, in a plan view, bottom bars and top bars cross axially outside the laminated core at crossing points and gaps remain between the crossing points. A support device has a retaining body arranged radially inside the winding overhang and at least one clip having two legs and a crosspiece. The is connected to both the retaining body and to a top bar to radially support the top bar by the retaining body. To ensure a robust stabilization of the winding overhang the legs protrude through two gaps adjacent to different top bars.

Abstract: A hardware mounting system for eyewear including a mounting bracket that is secured to a temple of eyewear by wrapping a stretchable retention band around the temple and aligning two openings in the retention band around a protrusion in the mounting bracket. Either or both of a mounting arm and a spherical rod end can be secured to the mounting bracket. The mounting arm can allow an ear device such as hearing protection to be secured to the eyewear. The spherical rod end allows a device having a socket such as certain illumination devices to be secured to the eyewear.

Abstract: A hardware mounting system for eyewear including a mounting bracket that is secured to a temple of eyewear by wrapping a stretchable retention band around the temple and aligning two openings in the retention band around a protrusion in the mounting bracket. Either or both of a mounting arm and a spherical rod end can be secured to the mounting bracket. The mounting arm can allow an ear device such as hearing protection to be secured to the eyewear. The spherical rod end allows a device having a socket such as certain illumination devices to be secured to the eyewear.

Abstract: The invention relates to an accommodating device for a removable filter in a domestic appliance, having an accommodating opening for accommodating the filter at least in part, and having a seal which, with the filter inserted, seals the accommodating opening in relation to the filter. In order for fluff, hair and other deposits and contaminants both adhering to the filter and deposited in the vicinity of the accommodating opening to be reliably kept away from the accommodating opening when the filter is being removed, the seal is arranged at the accommodating opening and has at least one sealing element which, when the filter is being removed, passes out of a sealing operating position into a screening position, in which it encloses at least part of the accommodating opening with screening action.

Abstract: A pneumatic hammer mechanism is disclosed. The hammer mechanism features: a flying mass, which is movable along an impact axis; an impact surface, which limits a movement of the flying mass along the impact axis in the impact direction; an exciting piston, which limits a movement of the flying mass along the impact axis opposite from the impact direction; a pneumatic chamber between the flying mass and exciting piston; a drive for periodically moving the exciting piston with a stroke along the impact axis, wherein the flying mass is excited to a periodic movement between the impact surface and exciting piston. The stroke is selected as a function of a maximum length of the pneumatic chamber such that the periodic movement of the flying mass on the path between an impact on the impact surface and a minimum approach of the exciting piston intermittently has a velocity of zero.

Abstract: The invention relates to an accommodating device for a removable filter in a domestic appliance, having an accommodating opening for accommodating the filter at least in part, and having a seal which, with the filter inserted, seals the accommodating opening in relation to the filter. In order for fluff, hair and other deposits and contaminants both adhering to the filter and deposited in the vicinity of the accommodating opening to be reliably kept away from the accommodating opening when the filter is being removed, the seal is arranged at the accommodating opening and has at least one sealing element which, when the filter is being removed, passes out of a sealing operating position into a screening position, in which it encloses at least part of the accommodating opening with screening action.

Abstract: A pneumatic hammer mechanism is disclosed. The hammer mechanism includes: a flying mass; an impact surface which limits a movement of the flying mass along the impact axis in the impact direction; an exciting piston which limits a movement of the flying mass opposite from the impact direction; a pneumatic chamber between the flying mass and exciting piston; and a drive for periodically moving the exciting piston with a stroke along the impact axis.

Abstract: The machine tool includes a pneumatic percussion mechanism having a cup-shaped exciter cylinder (21) with an inner chamber (31) which is open in the direction of impact (26), and a free piston (22) which is movable in the inner chamber (31). A recess (32) and at least one ventilation opening (35), spaced at a distance from the recess (32) in the direction of impact (26), are provided in a shell-type wall (39) of the inner chamber (31). The free piston (22) includes a sealing element (53) which seals off the at least one ventilation opening (35) when the sealing element (53) is oppositely situated from the at least one ventilation opening (35), and which in the region of the recess (32) is separated at a distance from the shell-type wall (39) when the sealing element (53) is oppositely situated from the recess.

Abstract: A pneumatic hammer mechanism is disclosed. The hammer mechanism features: a flying mass, which is movable along an impact axis; an impact surface, which limits a movement of the flying mass along the impact axis in the impact direction; an exciting piston, which limits a movement of the flying mass along the impact axis opposite from the impact direction; a pneumatic chamber between the flying mass and exciting piston; and a drive for periodically moving the exciting piston with a stroke along the impact axis. The flying mass is excited to a periodic movement between the impact surface and a minimum approach of the exciting piston. A length ratio of the maximum length of the pneumatic chamber to the stroke is selected as less than 1.55.

Abstract: A hand-held power tool (1) includes a linear motor (2) having a rotor (3) which is movable along a percussion axis (A) in an axially limited manner between two reversal points (W) and which can be driven by the striking piston (5) of the power tool with the intermediary of an air spring (4), sensors designed for determining the actual state of the rotor (3) and connected to a computer (9) connected via power electronics (33) to at least one field coil (10) of the linear motor (2), with the rotor (3) being displaced against a contact element (11a, 11b) at least at one reversal point (W) and being pressed against the contact element electromagnetically; and a control process for the hand-held power tool.

Abstract: The machine tool includes a pneumatic percussion mechanism having a cup-shaped exciter cylinder (21) with an inner chamber (31) which is open in the direction of impact (26), and a free piston (22) which is movable in the inner chamber (31). A recess (32) and at least one ventilation opening (35), spaced at a distance from the recess (32) in the direction of impact (26), are provided in a shell-type wall (39) of the inner chamber (31). The free piston (22) includes a sealing element (53) which seals off the at least one ventilation opening (35) when the sealing element (53) is oppositely situated from the at least one ventilation opening (35), and which in the region of the recess (32) is separated at a distance from the shell-type wall (39) when the sealing element (53) is oppositely situated from the recess.

Abstract: A pneumatic hammer mechanism is disclosed. The hammer mechanism features: a flying mass, which is movable along an impact axis; an impact surface, which limits a movement of the flying mass along the impact axis in the impact direction; a hammer piston, which limits a movement of the flying mass along the impact axis opposite from the impact direction; a pneumatic chamber between the flying mass and hammer piston; a drive for periodically moving the hammer piston with a stroke along the impact axis, wherein the flying mass is excited to a periodic movement between the impact surface and hammer piston. The stroke is selected as a function of a maximum length of the pneumatic chamber such that the periodic movement of the flying mass on the path between an impact on the impact surface and a minimum approach of the hammer piston intermittently has a velocity of zero.

Abstract: A pneumatic hammer mechanism is disclosed. The hammer mechanism features: a flying mass, which is movable along an impact axis; an impact surface, which limits a movement of the flying mass along the impact axis in the impact direction; a hammer piston, which limits a movement of the flying mass along the impact axis opposite from the impact direction; a pneumatic chamber between the flying mass and hammer piston; and a drive for periodically moving the hammer piston with a stroke along the impact axis. The flying mass is excited to a periodic movement between the impact surface and a minimum approach of the hammer piston. A length ratio of the maximum length of the pneumatic chamber to the stroke is selected as less than 1.55.

Abstract: A pneumatic hammer mechanism is disclosed. The hammer mechanism includes: a flying mass; an impact surface which limits a movement of the flying mass along the impact axis in the impact direction; a hammer piston which limits a movement of the flying mass opposite from the impact direction; a pneumatic chamber between the flying mass and hammer piston; and a drive for periodically moving the hammer piston with a stroke along the impact axis.

Abstract: A hand-held power tool (1) includes a linear motor (2) having a rotor (3) which is movable along a percussion axis (A) in an axially limited manner between two reversal points (W) and which can be driven by the striking piston (5) of the power tool with the intermediary of an air spring (4), sensors designed for determining the actual state of the rotor (3) and connected to a computer (9) connected via power electronics (33) to at least one field coil (10) of the linear motor (2), with the rotor (3) being displaced against a contact element (11a, 11b) at least at one reversal point (W) and being pressed against the contact element electromagnetically; and a control process for the hand-held power tool.

Abstract: A clamping device connects two, axially harmonically oscillating components which oscillate, as a result of their respective plane surfaces impacting each other with a frequency ? in the form of a stationary longitudinal wave with a distance A between two nodes K. The clamping device includes an axially extending springy gripping yoke having two clamping elements. The two clamping elements are located at opposite ends of the gripping yoke. The two clamping elements are spaced apart from each other by a distance corresponding to the distance A between the two nodes K of the longitudinal wave.

Abstract: In a method for controlling a drive (4) of an electrically operated screwdriving power tool (2) during a screwdriving process, a tool holder (14) with a screw bit (16) fastened thereto is acted upon by the drive (4) to drive a fastening element (18) having a contact area (24) into a constructional component (20), with the screw bit movable up to a maximum screw-in value (Dmax) at a speed (D) and a operational torque (MA) generated between the screw bit (16) and the fastening element (18), and after it has been detected that a predetermined triggering screw-in depth (s0) has been reached, the speed (D) is reduced from the maximum screw-in value (Dmax) during a tightening process (AV), and, when it has been detected that a determined end value of the operational torque (MA) is reached, the screwdriving process is terminated.

Abstract: A clamping device for connecting two, axially harmonically oscillating components which oscillate, as a result of their respective plane surfaces (3a, 3b) impacting each other, with a frequency [omega] in the form of a stationary longitudinal wave (9) with a distance (A) between two nodes (K), includes an axially extending springy gripping yoke (4) having two clamping elements (5a, 5b) provided at its opposite ends and connectable by a spring (6), the two clamping elements (5a, 5b) being spaced from each other by a distance corresponding to the distance (A) between the two nodes (K) of the longitudinal wave (9), being oriented toward respective opposite ends, and forming respective compressible contact surfaces (7).