Patent ID: 9527697
Filing Date: 2016-12-27
CPC Classification: B66C,F16L

Claim Text:
1. A jib crane system, comprising: a first pivot joint rotatable with respect to a planar surface and with respect to a longitudinal axis of the first pivot joint which is perpendicularly aligned with respect to the planar surface; a first crane arm connected to the first pivot joint and thereby rotatable with respect to the planar surface, with a first bore of the first crane arm in fluid communication with the first pivot joint, the first crane arm continuously rotatable about the longitudinal axis of the first pivot joint with respect to the planar surface and with a vacuum pressure present in the first pivot joint and in communication with the first bore of the first crane arm; and a second pivot joint having a second pivot joint bearing housing fixed to an end of the first crane arm, wherein each of the first and second pivot joints includes a tapered roller bearing, an O-ring seal, and a central shaft portion having multiple apertures facilitating a flow of fluid through the first and second crane arms.