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US 5,913,508 AGranted
Multipurpose reusable safety rail assembly
AssigneeSure Step Gaurdrail Assembly, L. P.
InventorRichard Eades
Life of this patent
Estimating the term…
Abstract
A group of posts, rails, right and left side L shaped post to rail connectors, base plates, and toeboard holding plates to allow temporary or permanent installation of a safety guard rail system with two or more guard rails that may be used as a guard rail on stairways or on flat surfaces. Installation may be by one man using only tools necessary to fasten base plates to a surface. The same group of parts can be used to form rectangular, square, or odd shaped scaffolds with or without toe board holders.
Claims8
A multipurpose reusable rail assembly comprising:
- a) multiple posts with a C shaped cross section, said posts having multiple evenly spaced downward slanted openings along each edge of a longer side of said C shaped cross section;
- b) right side and left side post connector plates;
- each of said right side and said left side post connector plates having projection means that slidably fit into a minimum of two of said multiple evenly spaced downward slanted openings in said C shaped posts with said projection means being so shaped that downward pressure on said post connector plates causes said post connector plates to pull more tightly to said posts;
- and
- c) multiple extensible rail means and multiple rail connector means;
- said rail connector means connecting ends of said extensible rail means to said post connector plates;
- said rail connector means consisting of a hinge connector that is pivotally fastenable on a single side to said post connector plate and is pivotally fastenable on a dual side to an end of said extensible rail means to allow said extensible rail means to be moved both vertically and horizontally relative to said C shaped post;
- said extensible rail means having a first rail that slidably fits within a second rail;
- d) a fastening means to rigidly fasten together said extensible rail means at a desired effective length.
6 more elements
A multipurpose reusable rail assembly comprising:
- a) multiple posts with a C shaped cross section, said posts having multiple evenly spaced downward slanted openings starting from each edge of a longer side of said C shaped cross section;
- b) right side and left side post connector plates;
- each of said right side and said left side post connector plates having rigid projection means that slidably fit into a minimum of two of said multiple evenly spaced downward slanted openings in said C shaped posts with said projection means being so shaped that downward pressure on said post connector plates causes said post connector plates to pull more tightly to said posts;
- and with each of said post connector plates having a rigid rail connector means rigidly fastened at a horizontal angle of less than 181 degrees in a plane that is at a 90 degree angle to said side post connector plates;
- c) multiple extensible rail means with said rigid rail connector means being rigidly fastened on one end to said side post connector plates;
- said rigid rail connector means being sized to slidably fit into an end of said extensible rail means and having an opening means to allow pinning said rigid rail connector means to said extensible rail means;
- said extensible rail means having a first rail that slidably fits within a second rail and openings in each of said rails to allow pinning said rails together at a desired effective length.
4 more elements
A multipurpose reusable rail assembly comprising:
- a) multiple posts with a C shaped cross section, said posts having multiple evenly spaced downward slanted openings starting from each edge of a longer side of said C shaped cross section;
- b) right side and left side post connector plates;
- each of said right side and said left side post connector plates having projection means that slidably fit into a minimum of two of said multiple evenly spaced downward slanted openings in said C shaped posts with said projection means being so shaped that downward pressure on said post connector plates causes said Post connector plates to pull more tightly to said posts;
- and
- c) multiple extensible rail means and multiple hinge connector means;
- said hinge connector means being pivotally fastenable on a single side to said post connector plates and being pivotally fastenable on a dual side to an end of said extensible rail means;
- said extensible rail means having a first rail that slidably fits within a second rail;
- and
- d) a fastening means to rigidly fasten together said first rail and said second rail at a desired effective length.
6 more elements
A multipurpose reusable rail assembly comprising:
- a) multiple posts with a C shaped cross section, said posts having multiple evenly spaced downward slanted openings along each edge of a longer side of said C shaped cross section;
- b) a rectangular post connector and a baseplate, said post connector being connected on one end to said baseplate and being sized to closely and slidably fit into an end of said C shaped post;
- said baseplate having multiple openings to allow rigidly fastening said baseplate to a surface;
- c) right side and left side post connector plates;
- each of said right side and said left side post connector plates having projection means that slidably fit into a minimum of two of said multiple evenly spaced downward slanted openings in said C shaped posts with said projection means being so shaped that downward pressure on said post connector plates causes said post connector plates to pull more tightly to said posts;
- and
- d) multiple extensible rail means and multiple hinge connector means;
- said hinge connector means being pivotally fastenable on a single side to said post connector plate and being pivotally fastenable on a dual side to an end of said extensible rail means;
- said extensible rail means having a first rail that slidably fits within a second rail;
- e) a fastening means to rigidly fasten together said first rail and said second rail at a desired effective length.
7 more elements
Dependencies are inferred from the claim text.