Static structures (e.g. – buildings) – Including design feature accommodating dimensional variation...
Reexamination Certificate
2002-01-17
2004-06-22
Glessner, Brian E. (Department: 3635)
Static structures (e.g., buildings)
Including design feature accommodating dimensional variation...
C052S582100, C052S302600, C052S396030, C052S396040, C052S396060, C052S396080, C052S364000, C052S393000, C052S459000, C052S464000, C052S470000, C052S471000, C052S396070, C404S049000, C404S068000, C404S069000, C404S072000, C404S075000
Reexamination Certificate
active
06751919
ABSTRACT:
FIELD OF THE INVENTION
The present invention refers to a sealing element for expansion joints in concrete structures, particularly in concrete structures in which the sealing element is submitted to large structural movements and high hydrostatic pressures, such as it occurs in dikes.
BACKGROUND OF THE INVENTION
Among the known sealing techniques presently used in dikes, there can be mentioned the sealing elements made of copper, PVC mats, elastomeric profiles (butyl, neoprene) which are resistant to harsh weather conditions, alkalis, fungi, musts, oils, greases and other agents, or also silicone or polyurethane-based mastics.
Although being widely used and presenting operational results which meet the requirements of the concrete structure to which they are applied, these known sealing elements have a slow and expensive application and do not allow repair or recovering, in case there is an accident or localized rupture in the sealing element, after they have been installed and have begun to operate in the concrete structure.
DISCLOSURE OF THE INVENTION
Thus, the object of the present invention is to provide a sealing element for expansion joints of concrete structures, which has a simple construction, resistant to harsh weather conditions and other deteriorating agents, which is elastically deformable together with the structure, which may be submitted to high hydrostatic pressures, with no risk of impairing its sealing characteristics, and which allows repairs of eventual leaks to be carried out after the sealing element has begun to operate in the concrete structure to which it has been applied.
This and other objectives of the invention are achieved by a sealing element for expansion joints provided with a seat, which is recessed in relation to the adjacent end edges of the expansion joint upstream a concrete structure.
According to the invention, the sealing element comprises an elastomeric profile consisting of two longitudinal lateral flanges to be glued onto said end edges of the expansion joint, and a central portion, to be fitted inside the seat and which is shaped in order to support the hydrostatic pressures upstream the concrete structure; and a flexible duct, of high pressure, which is installed inside the seat and provided with radial bores opened to the inside of the latter, downstream the elastomeric profile, and having at least one end which may be accessed from the outside of the concrete structure, so as to allow the selective feeding of pre-catalyzed polymeric resin to the inside of the seat, after the elastomeric profile has been mounted and affixed to the concrete structure.
The above cited constructive arrangement allows, by means of adequately injecting, under high pressure, a pre-catalyzed polymeric resin inside the flexible duct, to seal any leak that may occur along the joint, making possible to simply and rapidly repair the sealing elements, which repair would otherwise be impracticable or at least extremely complex and expensive, as it occurs in dikes.
REFERENCES:
patent: 1357713 (1920-11-01), Lane
patent: 3015195 (1962-01-01), Clark
patent: 3124047 (1964-03-01), Graham
patent: 3172237 (1965-03-01), Bradley
patent: 3192577 (1965-07-01), Barr
patent: 3410037 (1968-11-01), Empson et al.
patent: 3411260 (1968-11-01), Dill
patent: 3667174 (1972-06-01), Arnett
patent: 3838931 (1974-10-01), Valla
patent: 3951562 (1976-04-01), Fyfe
patent: 3964220 (1976-06-01), Rutkowski et al.
patent: 3977802 (1976-08-01), Galbreath
patent: 3992121 (1976-11-01), Geiger
patent: 4059933 (1977-11-01), Funk et al.
patent: 4067155 (1978-01-01), Ruff et al.
patent: 4080086 (1978-03-01), Watson
patent: 4084912 (1978-04-01), Pyle et al.
patent: 4127350 (1978-11-01), Weber
patent: 4141189 (1979-02-01), Borjeson
patent: 4285612 (1981-08-01), Betti
patent: 4371283 (1983-02-01), Lampertz
patent: 4447172 (1984-05-01), Galbreath
patent: 4572702 (1986-02-01), Bone
patent: 4651488 (1987-03-01), Nicholas et al.
patent: 4774795 (1988-10-01), Braun
patent: 4784516 (1988-11-01), Cox
patent: 4793162 (1988-12-01), Emmons
patent: 4932183 (1990-06-01), Coulston
patent: 4965976 (1990-10-01), Riddle et al.
patent: 4979846 (1990-12-01), Hill et al.
patent: 5035533 (1991-07-01), Brown
patent: 5338130 (1994-08-01), Baerveldt
patent: 5365713 (1994-11-01), Nicholas et al.
patent: 5477643 (1995-12-01), Koenig, Jr.
patent: 5628857 (1997-05-01), Baerveldt
patent: 6018918 (2000-02-01), Long, Sr.
patent: 6039503 (2000-03-01), Cathey
patent: 6253514 (2001-07-01), Jobe et al.
patent: 6298621 (2001-10-01), Lee
patent: 6460306 (2002-10-01), Nelson
patent: 2106352 (1993-03-01), None
patent: 1275266 (1968-08-01), None
patent: 3038524 (1982-04-01), None
patent: 648916 (1995-04-01), None
Darby & Darby
Glessner Brian E.
Green Christy M.
LandOfFree
Sealing element for expansion joints does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sealing element for expansion joints, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sealing element for expansion joints will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3307574