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US 5,427,198 AGranted
Ladder and method of construction
OwnerMichael P. Walshinventor
Life of this patent
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OwnerMichael P. Walshinventor
Estimating the term…
The present invention provides an article which incorporates a jointed component, preferably a ladder, that includes a first member, a suitably aligned internal annuli, a second member, and a setting medium. The first member is formed of hollow section channel and has at least one socket in the form of a hole formed therein. The internal annuli is disposed within the first member and has opened ends aligned with the hole and splines extending within the annuli. The annuli also includes at least one angled flange disposed at one end of the annuli for receiving a portion of the setting medium. The second member is engaged within the annuli. The second member has a sealed end and is adapted to snugly fit into the socket. The setting medium is disposed between the end of the second member and the first member and between at least a portion of the interface between the second member and annuli. The invention provides a unique and highly reliable jointing method applicable to non ductile materials and, in particular, to fiberglass.
An article incorporating a jointed fiberglass component where a first member formed of a hollow section channel and having one or a plurality of sockets in the form of holes formed therein and a suitably aligned internal annulus is engaged with a second member having a sealed end and being adapted to snugly fit into said socket, wherein said annulus is flanged at one or both ends, said flanged annulus being entirely disposed within said channel, and wherein said jointed component is characterized by a setting medium injected into said socket/second member interface, such that said setting medium is located between and abuts the outer surface of said sealed end and an inside surface of said hollow section channel, and wherein application of pressure to said setting medium effects distribution thereof to said interface and surrounds.
An article incorporating a jointed fiberglass component where a first member formed of a hollow section channel and having one or a plurality of sockets in the form of holes formed therein and a suitably aligned internal annulus is engaged with a second member having a sealed end and being adapted to snugly fit into said socket, wherein said annulus includes internal splines to allow said setting medium to flow between said spines before it is set;
An article incorporating a jointed fiberglass component where a first member formed of a hollow section channel and having one or a plurality of sockets in the form of holes formed therein and a suitably aligned internal annulus is engaged with a second member having a sealed end and being adapted to snugly fit into said socket, wherein said annulus includes internal splines to allow said setting medium to flow between said spines before it is set;
An article incorporating a jointed component comprising:
Dependencies are inferred from the claim text.