Isoliermuffe fuer elektrische Trennstellen in Klein-Rohrleitungen

摘要

1,187,877. Pipe joints. EISENBAU ALBERT ZIEFLE K.G. 25 July, 1968, No. 35586/68. Heading F2G. An insulating pipe joint consists of a resilient insulating piece 1 gripped between the flared ends 21, 31 of pipes 2, 3 pressed together by a sleeve 4 surrounded by a compressing ring 7, the sleeve 4 being segmented to accommodate webs 6 which prevent rotation of the parts. The insulator 1 may be of synthetic rubber and may be supported against radial collapse by a reinforcing ring (5) of metal or plastics round its inner periphery (Fig. 3, not shown). The securing sleeve 4 consists of three sectors, Fig. 6, each internally shaped to clamp the outer surfaces of the flared pipe-ends and made of rigid plastics. The ring 7 may be a steel tube having edges 71 at each end turned in to grip chamfered edges 411 of the sleeve, or (Fig. 2, not shown), further insulating plastics is moulded in at each end (8) to secure and seal the joint.