Road structure – process – or apparatus – Traffic steering device or barrier
Reexamination Certificate
2007-05-08
2007-05-08
Addie, Raymond (Department: 3671)
Road structure, process, or apparatus
Traffic steering device or barrier
C404S009000, C404S011000
Reexamination Certificate
active
10979852
ABSTRACT:
An unobtrusive on-grade barrier. One embodiment comprises a concrete-lined trench over which a biased hinged plate is affixed to an end wall of the trench. The biased hinge holds the free end of the plate against a tab affixed to the other end wall, assuring the plate does not rise above grade. The plate is supported for vehicle passage by a sliding mechanism energized by an actuator controlled by a controller that may be automated or operated by security personnel. The barrier may be configured so that vehicles may approach from either end. Upon authorizing access to the driver, the vehicle is permitted to pass over the supported plate. If the driver is not authorized access, the support is slid out of the way and any vehicle attempting to pass slides into the trench. Embodiments may include means for clearing the trench of a trapped vehicle.
REFERENCES:
patent: 4554695 (1985-11-01), Rowland
patent: 4576509 (1986-03-01), Beaty, Sr.
patent: 4624600 (1986-11-01), Wagner et al.
patent: 4647246 (1987-03-01), Brink et al.
patent: 4705426 (1987-11-01), Perea
patent: 4775261 (1988-10-01), Fladung
patent: 4826349 (1989-05-01), Nasatka
patent: 5228237 (1993-07-01), Nasatka
patent: 5975791 (1999-11-01), McCulloch
patent: 6224291 (2001-05-01), Mateychuk
patent: 6227523 (2001-05-01), Haberlen
patent: 2003/0016996 (2003-01-01), Gelfand et al.
patent: 2005/0201827 (2005-09-01), Rastegar et al.
Cohen Gordon L.
Marsh Charles P.
Webster Julie L.
Addie Raymond
Baugher Jr. Earl H.
The United States of America as represented by the Secretary of
LandOfFree
On-grade barrier and method of its use does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with On-grade barrier and method of its use, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On-grade barrier and method of its use will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3743010