| 摘要 |
455,115. Fusible cut-outs. LANGE, E., 43, Im Dickicht, Zehlendorf, Berlin. Dec. 10, 1935, Nos. 34195, 34196, and 34197. Convention dates, Dec. 10, 1934, Jan. 14, 1935, and March 9, 1935. [Class 38 (i)] [See also Group XXXVII] An insulating casing 20 is formed with closure members 32, 33 serving as contacts, and carries a bell 25 by means of a spider 34. A conducting member 26 is connected by fusible elements with, respectively, the contact 33 and a plug 23 forming an outlet which is normally closed by a valve 27. When the pressure set up by the arc formed on rupture of the fuse within the bell is sufficient, the valve is lifted and the cold fluid outside the bell is forced across the arc formed within the outlet 23. In a modification, Fig. 6 (not shown), a fuse wire is run through the bell and conducting member and is connected to the valve. The fluid may be a liquid or gas. The Specification as open to inspection under Sect. 91 states also that the fuse wire may be coiled up within a cartridge, that the closing valve may be omitted or, in order to open both large and small currents, may have a weak and a strong control spring, the latter operating after a given valve-opening movement, that means may be provided for passing the hot fluid through a separate cooling chamber, and that an outlet may be provided, fitted with an easily-fusible closure, through which hot gas can escape without reaching the point where the arc is ruptured. This subject-matter does not appear in the Specification as accepted.
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