E - Fixed Constructions – 01 – C
Patent
E - Fixed Constructions
01
C
72/140, 94/18
E01C 11/10 (2006.01) E01C 11/12 (2006.01) E01D 19/06 (2006.01)
Patent
CA 1217668
ABSTRACT An expansion joint having a flexible seal held between two supports. The flexible seal has a ridge along each side and each of the ridges is symmetrical about a plane through the centre of the ridge and parallel to a surface of said seal immediately adjacent to that ridge. Preferably, each ridge has a square cross-section and is joined to the remaining part of the seal at a corner of said square. Each support has a base and cover that together contain a channel having a cross-section of similar size and shape to the cross-section of one ridge. Preferably, the channel in the base is a mirror image of the channel in the cover. The base and cover contain openings so that threaded screws can be inserted to rigidly affix the cover to the base with the ridge held snugly within the channel. In previous devices, supports do not exert equal pressure onto the seal during expansion or the seal was too difficult or expensive to install, maintain or replace.
420547
Braun Frank A.
Schnurr Daryl W.
LandOfFree
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