The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2007
Filed:
Nov. 03, 2004
Charles P. Marsh, Urbana, IL (US);
Julie L. Webster, Peoria, IL (US);
Gordon L. Cohen, Champaign, IL (US);
Charles P. Marsh, Urbana, IL (US);
Julie L. Webster, Peoria, IL (US);
Gordon L. Cohen, Champaign, IL (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
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.