Patent ID: 6260236
Filing Date: 2001-07-17
Classification: E05F,E05Y,Y10S,Y10T

Abstract:
In a back checking arrangement, a resilient member being variably compressible by an outside member, said resilient member comprising:a body of resilient material having a surface engageable by said outside member and being compressible when engaged by said outside member with a sufficient force,said body having at least one reservoir space therein for receiving a liquid, with a first communication passage leading from said space to said surface to provide a first liquid communication path between said space and an exterior of said body;said body having a second, relatively narrower communication passage leading from said space to said surface to provide a second liquid communication path between said space and said exterior of said body;whereby, when said body is engaged by said outside member, and said body and said space are compressed, and said body causes said first communication passage to be blocked, said liquid in said space is forced to exit said body through said second passage, thereby decreasing the compressibility of said body.