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US 12,734,967 B2Granted
Pivoting staircase
AssigneeMorryde International, Inc.
InventorsRyan Mason, Anthony J. Granzotto, Gary E. Tompkins, David Soetaert, Ben Kauffman
Life of this patent
Estimating the term…
Abstract
A pivoting staircase includes a pair of stringers and a tread extending between the stringers. A cleaning opening is defined at least partially by a lateral edge of the tread and a surface portion of an adjacent one of the pair of stringers. The cleaning opening is disposed between a pair of adjacent connection points of the tread and the adjacent one of the pair of stringers to provide a pathway for debris to fall laterally off of the tread.
Claims20
A pivoting staircase comprising:
- a pair of stringers, each of the pair of stringers comprising an upper edge, a lower edge, and an interior wall extending between the upper edge and the lower edge;
- a tread extending between the stringers, lateral edges of the tread extending along the interior walls of the pair of stringers between the upper edges and the lower edges thereof, an upper surface of the tread having upstanding ribs extending laterally thereacross;
- and
- a cleaning opening defined at least partially by the lateral edge of the tread and a surface portion of the interior wall of an adjacent one of the pair of stringers, the cleaning opening disposed between a pair of adjacent connection points of the tread and the adjacent one of the pair of stringers to provide a pathway for debris to fall laterally off of the upper surface of the tread.
1 more element
A pivoting staircase comprising:
- a pair of stringers;
- a tread extending between the stringers, an upper surface of the tread having upstanding ribs extending laterally thereacross;
- and
- a cleaning opening defined at least partially by a lateral edge of the tread and a surface portion of an adjacent one of the pair of stringers, the cleaning opening disposed between a pair of adjacent connection points of the tread and the adjacent one of the pair of stringers to provide a pathway for debris to fall laterally off of the upper surface of the tread;
- wherein the lateral edge of the tread extends along an interior surface of the adjacent one of the pair of stringers;
- and the surface portion of the adjacent one of the pair of stringers partially defining the cleaning opening is spaced laterally away from the lateral edge of the tread;
- wherein the adjacent one of the pair of stringers comprises a wall having the interior surface, the surface portion of the adjacent one of the pair of stringers partially defining the cleaning opening comprising a surface of a cavity formed in the wall.
4 more elements
A pivoting staircase comprising
- a pair of stringers;
- a tread extending between the stringers, an upper surface of the tread having upstanding ribs extending laterally thereacross;
- a cleaning opening defined at least partially by a lateral edge of the tread and a surface portion of an adjacent one of the pair of stringers, the cleaning opening disposed between a pair of adjacent connection points of the tread and the adjacent one of the pair of stringers to provide a pathway for debris to fall laterally off of the upper surface of the tread;
- and
- a second cleaning opening defined at least partially by the lateral edge of the tread and a second surface portion of the adjacent one of the pair of stringers, the second cleaning opening disposed between a second pair of adjacent connection points of the tread and the adjacent one of the pair of stringers to provide a pathway for debris to fall laterally off of the tread.
2 more elements
Dependencies are inferred from the claim text.