Stackable riser configuration
OwnerNorman W. Gavininventor
Life of this patent
Estimating the term…
Abstract
A stackable riser having a single side wall having a first open end defined by an edge and a second open channel end. A plurality of risers can be stacked on top of one another. The channel end of a riser mates with the first open end of a second riser. The riser includes a plurality of bosses and ribs connected to an interior surface of the sidewall to the edge of the first open end. A channel, on the channel end of one riser is adapted to receive the bosses and ribs of an adjacent riser.
Claims54
A stackable riser section comprising;
- a single sidewall having a interior surface and having a first end, and a second end, said first end adapted to mate with the second end of another riser and said second end adapted to mate with the first end of another riser;
- said first end terminating in an edge;
- a plurality of vertical bosses spaced about said interior surface of said sidewall attached to said interior surface to said edge, each terminating in an end flush with said edge of said sidewall.
A combination of stacked access riser sections each having a single sidewall defining an inner surface, said sidewall having a first end and a channel end, and a plurality of vertical bosses extending along the inner surface of the sidewall at said first end;
- said channel end includes walls defining a boss receiving channel;
- said vertical bosses of the riser section adjacent said channel end of one riser section received in said boss receiving channel of said riser section.
A combination of stackable riser sections comprising:
- at least two stacked riser sections, each including a sidewall defining an essentially smooth outer surface;
- an upper end of said sidewall configured to mate with a lower end of the sidewall of another riser section;
- a lower end of said sidewall configured to mate with the upper end of another riser section;
- wherein said essentially smooth outer surface of said sidewall of the lowermost riser section includes a removable anchor tab extending therefrom.
A riser section and cover combination, comprising:
- a riser section including a sidewall defining an access passage open at the top and bottom;
- a cover disposed upon said riser section and closing said passage at the top;
- and
- a fastener extending through said sidewall and said cover to secure said cover to said riser section.
A combination of stackable riser sections and a cover, comprising:
- a plurality of stacked riser sections, each riser section in said plurality of riser sections including a sidewall, said plurality of stacked riser sections defining a passage open at the top and bottom;
- a cover disposed upon the top riser section in said plurality of stacked riser sections and closing said passage at the top;
- and
- a fastener extending through said sidewall of said top riser section and said cover to secure said cover to said top riser section.
Dependencies are inferred from the claim text.