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:
Oct. 19, 1976
Filed:
Aug. 18, 1975
James L Howard, Carmichael, CA (US);
Daniel D Howard, Sacramento, CA (US);
Other;
Abstract
An inclined pair of stringer beams carries a plurality of transverse steps supported on saddles secured to the stringers. The upper tread surfaces of the steps are planar whereas the lower surfaces are arcuate, with a predetermined radius of curvature matching the corresponding arcuate shape of the subjacent supporting saddles. By angularly tipping each of the steps to or fro in the respective pair of saddles, the upper tread surface of the steps can be leveled despite variations in the angle of inclination of the stringers. The step is ordinarily constructed of precast concrete and includes metal reinforcements as well as metal inserts affording anchor points for attachment to the saddle, as by threaded fastenings or by welding.