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Sealing strip for bridging an expansion joint
| Details |
Inventors: Trieste, Mario; Whelan, II, James J.;
Assignee:
Primary Examiner: Ward; Robert S.
Assistant Examiner:
Attorney, Agent or Firm: Amer; Myron
An elastomeric seal having substantially hollow body having a polygonal cross section formed by a bottom wall, a pair of opposed spaced side walls, a top wall and a plurality of internal supporting struts symmetrically arranged about the center of the polygonal cross section. The top wall is formed of a pair of arms extending in a V to each other, the apex of which lies along the center line between the side walls. The side walls are themselves bent inwardly intermediate their ends to extend perpendicular to the respective arms of the top walls. Compression of the parallel side walls, toward each other, causes the inwardly bent portions of the side walls to rotate outwardly resulting in a raising of the apex of the top wall so that the top wall assumes a flat configuration. Also assuming a flat configuration are flanges attached to extend outwardly from each of the side walls and, having as one result, the prevention of seepage of water between the sides of the seal and the sides of the groove in which it is placed. |
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DETAILED DESCRIPTION According to the present invention, an elastomeric sealing strip is provided comprising an elongated substantially hollow body having a polygonal cross section formed by a bottom wall, a pair of opposed spaced side walls, a top wall and a plurality of internal supporting struts symmetrically arranged about the center of the polygonal cross section.
The top wall is formed of a pair of arms extending in a V to each other, the apex of which lies along the center line between the side walls.
The side walls are themselves bent inwardly intermediate their ends to extend perpendicular to the respective arms of the top walls.
As a result, compression of the parallel side walls toward each other, cause the inwardly bent portions of the side walls to rotate outwardly resulting in a raising of the apex of the top wall so that the top wall assumes a flat configuration, the free ends of the top wall being adapted to be embedded within the material forming the flooring or roadway structural element.
Each of the arms of the top wall are preferably provided with portions extending beyond the side walls and provided with lips at their end which can be embedded within the material of the flooring.
In addition, is is preferred that a flat extending flange be formed to extend outwardly from the upper portion of the side wall and perpendicularly thereto, intermediate the upper wall and the fulcrom point so that upon straightening of the upper portion of the side wall, the flange extends perpendicularly thereto and parallel to the structural element.
As a result, road material such as concrete, macadam or the like, can be inserted between the flange and the upper wall thereby embed the sealing strip.
Preferably the internal supporting walls include at least one pair of inverted V-shaped arms connected at its apex to the apex of the top wall so that on compression of the side wall, the apexes move in an ascending direction.
Full details of the present invention are set forth in the following description and are illustrated in the drawings
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