×

Stair nosing

  • US 3,287,867 A
  • Filed: 01/03/1964
  • Issued: 11/29/1966
  • Est. Priority Date: 01/03/1964
  • Status: Expired due to Term
First Claim
Patent Images

1. IN COMBINATION, A STAIR STEP COMPRISING A VERTICAL RISER, A TREAD AT FIRST ANGLES THERETO AND HAVING A LEADING EDGE PORTION RESTING ATOP AND UPPER EDGE OF THE RISER, SAID LEADING EDGE PORTION BEING PROVIDED WITH A HORIZONTAL GROOVE CONSTITUTING A KEYWAY, COVERING TILE FIXED ATOP SAID TREAD, NOSING COMPRISING A STRIP OF MOLDING, SAID MOLDING EXTENDING ALONG SAID LEADING EDGE PORTION AND BEING CONCAVO-CONVEX AND HAVING ITS CONCAVE SIDE OVERLYING THE LEADING EDGE PORTION OF THE TREAD AND UPPER EDGE PORTION OF THE RISER AND HAVING AN UPPER HORIZONTAL LENGTHWISE EDGE FLUSH WITH THE TOP OF THE FILE, THE EDGE

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×