Heatable corrugated hose for motor vehicles has crests and gaps to produce sequence of gaps, which is extended spirally over the length of corrugated hose forming a corrugation, within which heating element can be inserted

摘要

The corrugated hose (1) has crests (2) with gaps (4), which are arranged in displaced circular manner from crest to crest. A sequence of such gaps is produced, which is extended spirally over the length of corrugated hose section (5) forming a corrugation. Heating element (7,8) is inserted in the corrugation so that the heating element is wrapped in spiral manner around the corrugated hose.