POWER SEAL Russian patent published in 2003 - IPC

FIELD: ironmongery. SUBSTANCE: power seal includes body, flexible element possessing part joined to body and working section, spring-loaded stop interacting with flexible element and side surface of wedge space of body. Body comes in the form of two permanently joined plates. Recesses are made in plates to accommodate lug of passive part of flexible element. Body has longitudinal hole matched with wedge space where stop is located. Stop is manufactured in the form of set of rollers placed in cage. Diameter of rollers rises from inlet of longitudinal hole in body and rollers are inscribed in triangle formed by wall of wedge groove and generating line of flexible element, Second recess where knife with groove is mounted for turn towards outlet of longitudinal hole and for interaction with flexible element is made between longitudinal hole and side wall of body. Third recess in which flat spring is mounted for interaction with cage is made in wall of wedge groove. When flexible element is closed butt of spring is located inside wedge space, between inlet hole and cage. EFFECT: raised functional reliability of power seal. 7 cl, 3 dwg