A ladder having a right box rail having an outer web with an outer opening and an inner web with an inner opening. The ladder having a left box rail in parallel and spaced relation with the right box rail. The ladder comprises a hollow collar disposed in between the inner opening of the inner web and the outer opening of the outer web. The collar having a stem having a plurality of segments. The segments separated by slots. The ladder having a first rung attached to the right and left box rails. The first rung having a right end that extends through the outer opening, the collar and the inner opening. A method for using a ladder by a user. A method for forming a ladder.

Ladder components, such as braces, as well as ladders and methods of manufacturing ladders are provided. In one embodiment, a ladder brace is provided which extends between a rail and a cross member (e.g., a rung or a cross-brace). The ladder brace may include a first connecting portion associated with the rail, a second connecting portion associated with the cross member, and a strut portion extending between the first and second connecting portions. At least one of the first connecting portion and the second connecting portion is configured to completely encircle its associated component (e.g., either the rail or the cross member, respectively).

Ladder components, such as braces, as well as ladders and methods of manufacturing ladders are provided. In one embodiment, a ladder brace is provided which extends between a rail and a cross member (e.g., a rung or a cross-brace). The ladder brace may include a first connecting portion associated with the rail, a second connecting portion associated with the cross member, and a strut portion extending between the first and second connecting portions. At least one of the first connecting portion and the second connecting portion is configured to completely encircle its associated component (e.g., either the rail or the cross member, respectively).

A ladder having a first fiberglass rail. The ladder having a second fiberglass rail. The ladder having a one-piece composite rung which is hollow and made of carbon fiber or glass. The rung has a middle and a first end and a second end. The ladder having rivets that extend through the first end and the second end of the rung to attach the rung to the first rail and the second rail. No portion of the rung penetrates any portion of the first or second rails. A method for producing a ladder. A method for forming a one-piece composite rung for a ladder. A method for using a ladder.

A ladder having a first fiberglass rail. The ladder having a second fiberglass rail. The ladder having a one-piece composite rung which is hollow and made of carbon fiber or glass. The rung has a middle and a first end and a second end. The ladder having rivets that extend through the first end and the second end of the rung to attach the rung to the first rail and the second rail. No portion of the rung penetrates any portion of the first or second rails. A method for producing a ladder. A method for forming a one-piece composite rung for a ladder. A method for using a ladder.

A collapsible ladder includes a first pair of legs and a second pair of legs, each of the first pair of legs and the second pair of legs is rotatably joined near tops thereof; a plurality of steps extending between one of the first pair of legs and one of the second pair of legs, each of the steps rotatably jointed about a mid-point thereof; a first vertical spar slidably connected to each of the steps near the mid-points thereof; a plurality of supports extending between a second one of the first pair of legs and a second one of the second pair of legs, each of the supports rotatably jointly about a mid-point thereof; and a second vertical spar slidably connected to each of the supports near the mid-points thereof. This configuration allows the ladder to be collapsed by raising the first and second vertical spars causing the steps and supports to fold about their mid-points permitting the first and second pair of legs to be generally folded/collapsed into a single column.

A collapsible ladder includes a first pair of legs and a second pair of legs, each of the first pair of legs and the second pair of legs is rotatably joined near tops thereof; a plurality of steps extending between one of the first pair of legs and one of the second pair of legs, each of the steps rotatably jointed about a mid-point thereof; a first vertical spar slidably connected to each of the steps near the mid-points thereof; a plurality of supports extending between a second one of the first pair of legs and a second one of the second pair of legs, each of the supports rotatably jointly about a mid-point thereof; and a second vertical spar slidably connected to each of the supports near the mid-points thereof. This configuration allows the ladder to be collapsed by raising the first and second vertical spars causing the steps and supports to fold about their mid-points permitting the first and second pair of legs to be generally folded/collapsed into a single column.

An attachment for a ladder includes a pair of rung tubes for engaging the hollow rungs of a ladder secured together by at least one end tube.

A telescopic positioning structure used for a ladder is disclosed. The ladder includes a front supporting leg and a rear supporting leg. The front supporting leg includes a first tube and a second tube, and the first tube and the second tube are able to move relative to each other in an extension direction. The rear supporting leg is rotatably connected with the first tube. The ladder further includes a pin connected with the first tube. When the rear supporting leg is unfolded, an upper end of the rear supporting leg abuts against the pin and drives to the pin to move towards the second tube, and when the pin abuts against the second tube, the second tube is positioned.

A telescopic positioning structure used for a ladder is disclosed. The ladder includes a front supporting leg and a rear supporting leg. The front supporting leg includes a first tube and a second tube, and the first tube and the second tube are able to move relative to each other in an extension direction. The rear supporting leg is rotatably connected with the first tube. The ladder further includes a pin connected with the first tube. When the rear supporting leg is unfolded, an upper end of the rear supporting leg abuts against the pin and drives to the pin to move towards the second tube, and when the pin abuts against the second tube, the second tube is positioned.