Patent ID: 9322187
Filing Date: 2016-04-26
CPC Classification: B60P,E04G

Claim Text:
1. A supporting and lifting apparatus mounted on a trailer base with adjustable extensions, capable of being towed by a towing vehicle and used to transport materials on a work site which are intended to be assembled, supported and lifted vertically for installation, comprising: an expandable, rigid, rectangular trailer base frame; a supporting and lifting apparatus mounted on the trailer base frame; said trailer base frame being divided into a front frame portion and a rear frame portion; said front frame portion including a pair of parallel, hollow, longitudinal side members and at least three parallel, laterally disposed members connected to said longitudinal side members; said front frame portion having attached a first and second forward member angularly together at the front end forming an apex and connected to the front end of the said longitudinal side members at their opposite ends; a trailer hitch assembly with a tongue extending from said apex of front of said front frame portion configured for coupling said trailer base frame to a conventional vehicle or truck for towing; a trailer jack attached to said apex for support when said rear frame portion is extended; at least one axle attached to the rear of the said front frame portion of said trailer base; at least one pair of wheels attached to each said axle; a fender mounted on said front frame portion over each side of said pair of wheels; said rear frame portion is an extension comprising a laterally disposed member attached to a pair of longitudinal pipes which is movable rearwardly extending telescopically out of said longitudinal members on said front frame portion to adjust to the length of the materials; said pair of longitudinal pipes roll inside said longitudinal members on said front frame portion between wheels attached in all four corners at intervals to support said pair of longitudinal pipes while telescoping out while operating said supporting and lifting apparatus or while being pushed back in to be transported; a securing mechanism mounted on rear end of said front frame portion of said trailer base configured to selectively secure said extension in place during periods of operating said supporting and lifting apparatus or while traveling, such that movement of said support and lifting apparatus between operating and transport positions does not take place when the securing mechanism is engaged; when said rear frame portion is extended, trailer jacks attached to said rear frame are used to support said rear frame; said laterally disposed member encloses braking and electrical system of said supporting and lifting apparatus mounted on a trailer base; wherein the frame further comprises a storage compartment disposed on each side of the said front frame just in front of fenders for storing materials.