Krone Gmbh

Krone Aktiengesellschaft

Hermann Herfort

Gunter Hegner

Manfred Muller

Horst Forberg

A cutting/clamping terminal element for electrical conductors (14) is disclosed including a clamping slot (0) defined between a clamping piece (4) and an elastic clamping leg (2,3; 23, 13) to ensure an improved contact connection, such that even conductors (14) having very thin conductor core diameters, in particular wire strands, can be connected, without the conductor cross section being reduced and without there being a risk of conductor breakage. For this purpose, the clamping piece (4) is provided with clamping legs (2,3; 12,13) arranged on its front and rear sides, said clamping legs overlapping in the position of rest the clamping piece (4) at least in part, such that the sharp edges (15,24) of the two clamping legs (2,3; 12,13) and of the clamping piece (4) cut into the insulation (11) and clamp the core (10) of the conductor (14) in the clamping slot (9) at in total three different positions.

Cutting-clamping terminal element for electrical conductors

The invention relates to a tool for the wiring of terminal elements which permits a plurality of separate operations such as connecting and withdrawing of a wire to and from a terminal element, respectively, and severing of the wire, to be carried out, and which may be manufactured at low cost because of its simple structure. To this end the tool comprises a bipartite plastic grip member (3) accommodating a ram (2) and a striker mechanism. On a protruding ram head (2a) there is provided a wire cutter (6) which may be actuated through a pin-and-slot guide (5, 6c) during a connecting operation. Locking means function to releasably connect the ram (2) to a slider (8) accommodated within the grip member (3) so as to be longitudinally movable.

Tool for electrically connecting insulated wires

The subject-matter of the present invention is a plug-in connector with arresters (1) for separating blocks, comprising a cartridge-type housing (20) of insulating material having receptacles for the arresters (1), each of said arresters being connected through a respective fuse element (11) and an earth contact (3) to an earth strip (7) and being exchangeably retained within the receptacle by means of compression springs (10). In order to obtain a number of advantages with respect to manufacture and operation, such as simple construction and inexpensive manufacture as well as easy manipulation and suitability for two respective tapping contacts per arrester, in the plug-in connector according to the invention the arresters (1) each comprise three electrodes (12, 12', 12') each of which is connected to a contact pin (c, b, a) both mechanically and electrically. The contact pins (c, b, a) engage into clamping contacts (2, 3, 4), the two outer ones (2, 4) of which are connected each to a tapping contact (5, 6) accessible from the outside and the central clamping contact (3) of which is connected to the U-shaped earth strip (7). The fuse element (11) associated with each arrester and being in the form of a solder pellet is disposed between the central electrode (12) and an earth bar (8) accessible from outside and electrically and mechanically connected to the earth strip (7). The compression spring assemblies for the arresters (1), which assemblies (10) are accessible through openings (9) formed in the housing, comprise electrical contacts (17, 18) which are associated to the outer electrodes (12', 12') of the arresters (1) but which will make an electrical contact only after the solder pellet has melted.

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Berlin, Germany

Hermann Herfort