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:
Apr. 25, 1995
Filed:
Dec. 09, 1993
Robert H Plfeger, Milwaukee, WI (US);
Pflow Industries, Milwaukee, WI (US);
Abstract
A security door construction for a doorway in a loading dock. The door is constructed of open materials, such as expanded metal mesh, and is mounted for movement between a closed and open position on tracks which are located adjacent the sides of the doorway. A safety beam or barrier is connected to the lower portion of the door and extends across the width of the doorway when the door is in the closed position. Fixed supports are mounted on the loading dock in position to be engaged by the ends of the barrier in the event the barrier is subjected to an impact, thereby preventing lateral deflection of the door by the external force and preventing heavy objects from falling through the doorway.