Patent ID: 7937807
Filing Date: 2011-05-10
Classification: E05F,E05Y,F16F,Y10T

Abstract:
1. Universal impact-hinder device, comprising a body ( 1 ); a guiding pin ( 4 ) arranged at a closed first end of an inside cylindrical cavity of the body ( 1 ), a spiral spring ( 7 ) on the guiding pin ( 4 ); a ring ( 5 ) at the opposite second end of the inside cylindrical cavity of the body ( 1 ); and a piston having a T-shaped head in cross section and an inside cavity in which the spring ( 7 ) is supported, which piston is capable to move within the inside cylindrical cavity of the body ( 1 ) between the closed first end and the ring ( 5 ), while the guiding pin ( 4 ) is within the inside cavity of the piston, wherein the T-shaped head of the piston is provided with a groove and a movable O-ring ( 6 ) within said groove, where the O-ring ( 6 ) has two end positions in transversal direction of the groove, in the first end position a surface of the groove having artificial damages ( 31 ) and the contacting O-ring ( 6 ) determine a first flow through capacity of a fluid medium, where pressing the O-ring ( 6 ) into the artificial damages ( 31 ) closes partially ducts of artificial damages ( 31 ) thus reducing the first flow through capacity, and in the second end position an orifice ( 21 ) between the inside cylindrical cavity of the body ( 1 ) and the groove determines a second flow through capacity of said fluid medium which is greater than the first flow through capacity.