Patent EA-002373-B1 (EA)
Title: Wire seal
Inventor: GUDOV VALERY DMITRIEVICH
IPC: E05B39/02
Filed: 2000-08-15
Abstract: 1. A cable seal, comprising a body, a flexible member having a passive part rigidly connected to the body and a working part passed through a through opening in the final assembled position, spring-loaded locking rollers arranged in the body chamber and interacting with the flexible member and tapered surfaces of the chamber , characterized in that the inner cavity is made in the form of one or two wedged grooves positioned at an angle to the through opening of the body and combined with it, the rollers are of different diameter and arranged in the wedged groove the smallest near the input opening of the body, the rollers inscribed in a triangle formed by the wall of the wedged groove and the flexible member generator for providing uniform pressure of all rollers upon the cable. 2. A cable seal according to claim 1, characterized in that the wedged grooves are made on both sides the though opening, wherein the angle at which the wedged groove crosses the through opening does not exceed 8 degree . 3. A cable seal according to claim 1 or 2, characterized in that the rollers arranged in the inclined groove, assembled in a block with a separator designed as two cover plates to the roller block with holes for their rotation axes. 4 A cable seal according to claims 1 to 3, characterized in that there is at least one additional roller, the rotation axis of which is shifted from the line connecting rotation axes of the rest of rollers to the side of the axis of the through opening and its diameter is equal or differs from the diameter of a neighboring roller a circular milling is made on it, the depth of which is selected so that the tangent to the milling bottom parallel to the flexible member generator coincides with the line tangent to the generator of the rest of rollers. 5. A cable seal according to claims 1 to 4, characterized in that the circular milling on the roller is can be rectangular, triangular, trapezoidal, stepped or cylindrical. 6. A cable seal according to claims 1 to 5, characterized in that the height of rollers is equal or larger the diameter of the flexible member. 7. A cable seal according to claims 1 to 6, characterized in that the rollers have hardness higher than the hardness of the flexible member. 8. A cable seal according to claims 1 to 7, characterized in that the surface of the rollers have an increased roughness produced by knurling or abrasive treated. 9. A cable seal according to claims 1 to 8, characterized in that the body is designed as a base being one piece with a cover, wherein a through opening, the wedged grooves inclined to it and a chamber for positioning an end piece of the passive part of the flexible member are made in the body base. 10. A cable seal according to claims 1 to 9, characterized in that the end piece of the passive part of the flexible member is mounted rotatable around the chamber axis. 11. A cable seal according to claims 1 to 10, characterized in that a recess is made along the perimeter of the base or the cover and a protrusion is made on the mating detail for fitting in said recess. 12. A cable seal according to claims 1 to 11, characterized in that the base of the cover are provided with pins, the opposite detail is provided with holes, the pins serve as guides during an assembly operation and blanks for riveting the base and the cover. 13. A cable seal according to claims 1 to 12, characterized in that the base and the cover are designed as two half-forms, the inner surface of one them is the mirror image of the other. 14. A cable seal according to claims 1 to 13, characterized in that the through opening for the flexible member is a curved member composed of gage curve lines, the minimum radius of curvature constitutes at least 7-8 diameters of the flexible member. 15. A cable seal according to claim 1, characterized in that two wedged grooves of the base are united, lodgments for separators are provided on both sides of the through opening, wherein both separators are spring-loaded by one spring arranged between the base and the cover and the flexible member is positioned between the spring coils. 16. A cable seal according to claim 15, characterized in that the spring interacting with the separators  when being in the through opening is compressed and has no space between coils. 17. A cable seal according to claims 15 or 16, characterized in that the lodgments for the separators are also made in the cover.