Expandable belt type expansion joint

Joints and connections – Flexible member is joint component

Patent

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Details

403 28, 403404, 52393, 285187, 285229, F16B 500

Patent

active

057161585

ABSTRACT:
A novel S-shape web section in a dog bone style expansion joint belt, having a very significant increase in the ability to define a successful seal even in misaligned or otherwise off-specification expansion joint environments. The web section has the potential of significantly increasing belt service life in contrast to a conventional OEM belt, due to lower stress levels at finite element locations proximate to the mid-span, and particularly on the convex inner surface of the belt during high vacuum situations. The web preferably has only 3 layers of polyester or nylon fabric, each with an intermediate skim coat of neoprene rubber, to bond the fabric plies together and also to bond the fabric core with an outer covering of black neoprene rubber or Viton rubber. The fabric plies may extend longitudinally inside of the end knobs or be splayed outwardly inside of each end knob to avoid need for a separate cord or a cord and a key.

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patent: 4345772 (1982-08-01), Woody et al.
patent: 4732413 (1988-03-01), Bachmann et al.
patent: 5159811 (1992-11-01), Hefler et al.
patent: 5228255 (1993-07-01), Hahn

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