Patent ID: 9586793
Date: 2017-03-07
CPC Classifications: B66C

Claim:
1. A multi-port vacuum lifting attachment incorporating a base plate, a framework mounted upon said base plate, said framework being formed of hollow tubing that provides a conduit for transfer of any vacuum generated within the attachment during its usage, said framework including a series of top tubes that form an upper rectangular framework, a series of side vertical tubes one at each corner connecting with the upper framework at its corners, and said side vertical tubes securing at their lower ends with said base plate, all of said top series of tubes and said series of vertical tubes being hollow and in communication with each other to transfer vacuum generated by said attachment to be transferred throughout said framework, said attachment including an engine provided upon its base plate, a vacuum pump interconnected with the engine and which when operative generating a substantial vacuum for transfer through the series of tubes of the framework, a pair of suction ports provided to the underside of the base plate, said pair of suction ports in communication with the series of tubes forming said framework, each suction port having a sealing ring around its periphery that can seal upon any concrete slab or metal panel to which it may vacuum attach, to achieve their movement, and said multi-port vacuum lifting attachment capable of attachment to a slab at least at two locations, and capable of straddling any imperfection upon such slab or panel that would otherwise prevent the vacuum attraction and holding by the suction ports thereto during usage and operation of this lifting attachment.