Patent ID: 8196361
Filing Date: 2012-06-12
Classification: E04F

Abstract:
1. A step structure for use in constructing a stairway, the step structure comprising: a first riser having a front portion and a rear portion; a tread having a support surface and an opposite surface, the tread defining an aperture; a compression spacer received within the aperture; a second riser having a front portion and a rear portion; a fastener received within the aperture and clamping together the first and second risers; and wherein the tread is fastened between the rear portion of the first riser and the front portion of the second riser and wherein the second riser of one step structure becomes the first riser of the next-up step structure and wherein the compression spacer is constructed and arranged to absorb at least a portion of the clamping force of the fastener.