Patent ID: 6840698
Filing Date: 2005-01-11
Classification: A47B,F16B,Y10T

Abstract:
1. Connection device for a tubular-frame structure for supporting surfaces comprising a body ( 18 ) from which projects at least one socket ( 19 ) for connecting to tubular profiles ( 15 ) in a perpendicular direction or at an angle, said body ( 18 ) having a projecting connector ( 20 ) for releasable connection of a tubular leg ( 14 ), said at least one socket ( 19 ) having a non-continuous external wall ( 21 ), which defines an internal seat ( 22 ) that is attached at a base by an abutment surface ( 42 ) for a blocking means, carrying a threaded hole ( 25 ) which houses an operation grain ( 23 ) which has complimentary threads at a first end to engage said threaded hole ( 25 ), said operation grain ( 23 ) having an abutment crown ( 30 ) above said complimentary threads and at a second end opposite the end having threads, an unthreaded shaft ( 31 ) that has a groove ( 32 ) for housing a sealing element ( 33 ) comprising a broken ring, said socket ( 19 ) having a hole ( 34 ) adapted for housing said unthreaded shaft ( 31 ) and said sealing element ( 33 ) of said operation grain ( 23 said connector ( 20 ) being composed of an expandable cylindrical body comprising a plurality of notches ( 37 , 38 ) upon which acts a second operation grain ( 39 ), which can be operated through a key from outside said tubular leg ( 14 ).