초록 ▼

A portable ladder having stabilizer brackets slidably mounted on the ladder siderails to permit the ladder to be mounted to a flatbed trailer tiedown rail. The slidable stabilizer brackets are substantially self-adjusting in position, and adjust automatically, for example, when a load is removed fro

A portable ladder having stabilizer brackets slidably mounted on the ladder siderails to permit the ladder to be mounted to a flatbed trailer tiedown rail. The slidable stabilizer brackets are substantially self-adjusting in position, and adjust automatically, for example, when a load is removed from the trailer. The ladder may optionally include two sections pivotably interconnected to facilitate handling and storage. A lock to secure the two sections together in an extended position may also be provided. The advantage is a lightweight, portable ladder which can be used with practically any flatbed trailer. The ladder adjusts substantially automatically to the height of the trailer to provide stable access to the trailer bed.

대표청구항 ▼

[ I claim:] [1.] A ladder comprising:a) opposed siderails having a top end and a bottom end, the bottom end being adapted for substantially vertical load-supporting engagement with a base surface,b) at least one tread affixed between the opposed siderails and cooperating therewith to provide a stabl

[ I claim:] [1.] A ladder comprising:a) opposed siderails having a top end and a bottom end, the bottom end being adapted for substantially vertical load-supporting engagement with a base surface,b) at least one tread affixed between the opposed siderails and cooperating therewith to provide a stable structure; andc) a respective stabilizer bracket slidably mounted about the top end of each siderail and adapted for substantially horizontal load supporting engagement with a rail, each stabilizer bracket comprising a pair of opposed surfaces selectively engageable with corresponding surfaces of a respective siderail, such that each stabilizer bracket is readily slidable between first and second limit positions when the bottom ends of the siderails are resting on the base surface and no load is applied to the ladder, and each stabilizer bracket cants to operably bind on the respective siderail by engagement between the opposed surfaces of the stabilizer bracket and the corresponding surfaces of the siderail to thereby substantially immobilize the stabilizer bracket at a position intermediate the first and second limit positions when the bottom ends of the siderails are resting on the base surface and the weight of a user is applied to a tread.