Joints and connections – Including frangible component
Reexamination Certificate
2005-06-28
2005-06-28
Sandy, Robert J. (Department: 3677)
Joints and connections
Including frangible component
C403S021000, C411S002000, C411S427000, C411S429000
Reexamination Certificate
active
06910826
ABSTRACT:
A breakaway coupling for a light pole or the like is disclosed and is utilized on each of the anchor bolts of the foundation for the pole. Each of the couplings comprises a metal coupling nut which has a plurality of radially spaced-apart and vertically disposed slits formed therein which extend thereinto to create weakened areas or zones in the coupling nut. The coupling nut is embedded in a fiber-reinforced material which provides the necessary hoop strength to the coupling nut. The base plate of the pole is positioned on the upper ends of the coupling nuts and is secured thereto by bolts extending downwardly through the base plate of the pole. If the pole is struck by a vehicle, the fiber-reinforced body members, as well as the coupling nuts, fracture to permit the pole to break away from the foundation. The fiber-reinforced body member of the coupling not only adds hoop strength to the coupling nut, but prevents the metal coupling nut from being exposed to corrosive elements such as salt or the like.
REFERENCES:
patent: 2282641 (1942-05-01), Corey
patent: 3521413 (1970-07-01), Scott et al.
patent: 3552698 (1971-01-01), Kinney
patent: 3572223 (1971-03-01), Vierregger
patent: 3630474 (1971-12-01), Minor
patent: 3637244 (1972-01-01), Strizki
patent: 3837752 (1974-09-01), Shewchuk
patent: 4007564 (1977-02-01), Chisholm
patent: 4052826 (1977-10-01), Chisholm
patent: 4068555 (1978-01-01), Volkman
patent: 4472095 (1984-09-01), Molina
patent: 4528786 (1985-07-01), Dinitz et al.
patent: 4638608 (1987-01-01), Coy
patent: 4923319 (1990-05-01), Dent
patent: 4926592 (1990-05-01), Nehls
patent: 4974888 (1990-12-01), Childers
patent: 5015133 (1991-05-01), Arena
patent: 5108133 (1992-04-01), Maloberti
patent: 5139381 (1992-08-01), Lubreski et al.
patent: 5340252 (1994-08-01), Weddendorf
patent: 5474408 (1995-12-01), Dinitz et al.
patent: 5499885 (1996-03-01), Chapman
patent: 6065894 (2000-05-01), Wasson et al.
patent: 6305890 (2001-10-01), Okamura
patent: 6406240 (2002-06-01), Potter
Rodriguez Ruth C.
Sandy Robert J.
Thomte Dennis L.
Thomte Mazour & Niebergall
Valmont Industries, Inc.
LandOfFree
Breakaway coupling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Breakaway coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Breakaway coupling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3474713