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:
Jan. 18, 2005
Filed:
Feb. 06, 2003
Matthew A. Gelfand, Rockville Centre, NY (US);
Joseph Vellozzi, Ardsley, NY (US);
John S. Paner, Lancaster, NY (US);
Norman D. Mackenzie, Alden, NY (US);
Shubin Ruan, Williamsville, NY (US);
D. Lance Bullard, Jr., College Station, TX (US);
Dean C. Alberson, Bryan, TX (US);
Matthew A. Gelfand, Rockville Centre, NY (US);
Joseph Vellozzi, Ardsley, NY (US);
John S. Paner, Lancaster, NY (US);
Norman D. MacKenzie, Alden, NY (US);
Shubin Ruan, Williamsville, NY (US);
D. Lance Bullard, Jr., College Station, TX (US);
Dean C. Alberson, Bryan, TX (US);
Universal Safety Response, Inc., New York, NY (US);
Abstract
A heavy duty ground retractable automobile barrier for a railroad crossing. Concrete bunkers are placed at each side of a roadway. An upstanding concrete-filled steel pipe fixed in each bunker has a sleeve for rotational and axial movement. Shock absorbers are mounted on each sleeve. A net extends across the road and is attached to the opposite ends of the shock absorbers. Collision of an automobile with the net creates tensile forces in the net. The shock absorbers expand while rotating about the pipe's axis in response to tensile forces from the net that meet or exceed a minimum threshold. Forces from the net pass through the axis of the steel pipe. The net is stored in a pit transverse the roadway parallel to the railroad tracks and is raised and lowered as appropriate. The net includes a cable that extends across the road in a wave pattern, having peaks, valleys and midpoints, wherein tangents of the wave midpoints are at least 90 degrees from tangents of the peaks and valleys.