Abstract

An electrical contact arrangement comprising at least one pair of contacts which is formed by a primary and a secondary contact ring (11, 12) which can be rotated in relation to one another about a longitudinal center axis (16) and each have a conical shell-like contact face (11d, 12d) which surrounds the longitudinal center axis (16), and at least one roller (27) which rolls between the primary and the secondary contact ring (11, 12) and is rotatably mounted about a rotation axis (28) which is at a right angle to the longitudinal center axis (16). The roller (27) has a conical shell-like contact surface (27a) which surrounds the rotation axis (28) and respectively forms a line contact, which runs along a respective contact line (31, 32), with the contact faces (11d, 12d) of the primary and secondary contact rings (11, 12).

IPC Classes  ?

• H01R 39/64 - Devices for uninterrupted current collection
• H01R 39/28 - Roller contactsBall contacts

Abstract

The invention relates to a clamping device for clamping a workpiece (50), comprising a rotatably and axially immovably mounted spindle (2), a drive motor (25) for rotating the spindle (2), and an unrotatably retained spindle nut (9) cooperating with a thread (2a) of the spindle (2), wherein, by rotating the spindle (2), a clamping element (11, 43) for clamping the workpiece (50) and which is connected to the spindle nut (9) or formed on the spindle nut (9) can be adjusted. The clamping device comprises an impulse unit (32, 51) having a rotary part (33, 52), which is mechanically coupled to a rotor (24) of the drive motor (15), wherein, in order to rotate the spindle (2), at least one rotary impulse can be transmitted from the impulse unit (32, 51) to the spindle for each revolution of the rotary part (33, 52).

IPC Classes  ?

• B25B 1/10 - Arrangements for positively actuating jaws using screws
• B25B 1/18 - Arrangements for positively actuating jaws motor driven, e.g. with fluid drive, with or without provision for manual actuation
• B25B 21/02 - Portable power-driven screw or nut setting or loosening toolsAttachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket

Abstract

An electrical contact arrangement comprising at least one pair of contacts which is formed by a primary and a secondary contact ring (11, 12) which can be rotated in relation to one another about a longitudinal centre axis (16) and each have a conical shell-like contact face (11d, 12d) which surrounds the longitudinal centre axis (16), and at least one roller (27) which rolls between the primary and the secondary contact ring (11, 12) and is rotatably mounted about a rotation axis (28) which is at a right angle to the longitudinal centre axis (16). The roller (27) has a conical shell-like contact face (27a) which surrounds the rotation axis (28) and respectively forms a line contact, which runs along a respective contact line (31, 32), with the contact faces (11d, 12d) of the primary and secondary contact rings (11, 12).

IPC Classes  ?

• H01R 39/64 - Devices for uninterrupted current collection
• H01R 39/28 - Roller contactsBall contacts

Abstract

The invention relates to a clamping device for clamping an insertion nipple (7), comprising a clamping element (11) which can be axially moved, by a drive motor (9) via a screw mechanism (13), between an open position in which the insertion nipple (7) can be introduced into a receiving opening (8) of the clamping device and withdrawn from same, and a clamping position in which the insertion nipple (7) introduced into the receiving opening (8) is retained in same, wherein the clamping device has an impulse unit (12) with a rotary part (40) which is mechanically coupled to the rotor (31) of the drive motor (9), and by means of which, for each revolution, a rotary impulse can be transmitted, at least once, to an impulse-receiving part (41) of the impulse unit (12) via the screw mechanism (13), in order to axially move the clamping element (11).

IPC Classes  ?

• B25B 5/10 - Arrangements for positively actuating jaws using screws
• B23Q 1/00 - Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members