Movable bearing support

Claim 1

A SUPPORT CONSTRUCTION FOR A PORTION OF A STRUCTURAL MEMBER SUBJECT TO MOVEMENT DUE TO FORCE IMPOSED ON SAID PORTION, SAID SUPPORT CONSTRUCTION COMPRISING: (A) AN ELONGATED MEMBER BEARING PLATE JOINED TO AND BENEATH SAID STRUCTURAL MEMBER PARALLEL TO SAID STRUCTURAL MEMBER, (I) HAVING TWO ENDS AND A SMOOTH BEARING SURFACE FACING AWAY FROM SAID STRUCTURAL MEMBER, (B) AN ELONGATED BASE BEARING PLATE ADAPTED TO BE JOINED TO A SUPPORT STRUCTURE, SAID BASE BEARING PLATE, (I) BEING ORIENTED AT RIGHT ANGLES TO SAID MEMBER BEARING PLATE, (II) HAVING TWO ENDS AND A SMOOTH BEARING SURFACE FACING TOWARD SAID STRUCTURAL MEMBER, (C) A SUBSTANTIALLY SADDLE SHAPED MEMBER, (I) INCLUDING AN UPPER SLIDE CHANNEL SLIDINGLY CONTAINING SAID MEMBER BEARING PLATE AND, (A) ORIENTED TO PERMIT LONGITUDINAL MOVEMENT OF SAID MEMBER BEARING PLATE, (B) HAVING SIDE PORTIONS FOR PREVENTING TRANSVERSE MOVEMENT OF SAID MEMBER BEARING PLATE, (C) HAVING A SUBSTANTIALLY UNIFORM SHEET COMPOSED ESSENTIALLY OF POLYTETRAFLUOROETHYLENE BONDED TO SAID UPPER SLIDE CHANNEL AND SIDE PORTIONS, (II) INCLUDING A LOWER SLIDE CHANNEL CONTAINING SAID BASE BEARING PLATE, (A) ORIENTED AT RIGHT ANGLES TO SAID UPPER SLIDE CHANNEL TO PERMIT MOVEMENT OF SAID SADDLE SHAPED MEMBER ALONG SAID BASE BEARING PLATE, (B) HAVING SIDE PORTIONS FOR PREVENTING TRANSVERSE MOVEMENT OF SAID SADDLE SHAPED MEMBER ON SAID BASE BEARING PLATE, (C) HAVING A SUBSTANTIALLY UNIFORM SHEET COMPOSED ESSENTIALLY OF POLYTETRAFLUOROETHYLENE BONDED TO SAID LOWER SLIDE CHANNEL AND SIDE PORTIONS, (D) SAID MEMBER BEARING PLATE BEING OF A LENGTH AND LOCATION SUCH THAT ITS TWO SAID ENDS ARE ALWAYS OUTSIDE SAID UPPER SLIDE CHANNEL, (E) SAID BASE BEARING PLATE BEING OF A LENGTH AND LOCATION SUCH THAT ITS TWO SAID ENDS ARE ALWAYS OUTSIDE SAID LOWER SLIDE CHANNEL.