FLEXIBLE INFLATABLE SEALING MEMBER (DESIGN VERSIONS) Russian patent published in 1999 - IPC

FIELD: electrical engineering; sealing duct- or case- mounted cables and tubes. SUBSTANCE: sealing member is, essentially, sheath used for packing clearance between two parts that has hole in its wall or between its walls to receive nozzle connected to working medium pressure source; novelty is that member is provided with internal valve for automatic tight closure of hole under effect of internal pressure upon removal of nozzle from hole according to one of its design versions. In other design version, sealing member has mentioned hole and internal valve but working medium is introduced into working element under pressure directly through hole. In third version, working member has unidirectional plane valve for introducing pressure-building working medium through nozzle joined to it; upon removal of nozzle from hole, unidirectional valve is automatically sealed. Valve is mounted in sealing member wall in parallel with the latter. EFFECT: simplified design and improved operating characteristics of sealing member. 25 cl, 21 dwg