OPW Engineered Systems, Inc. Patent applications |
Patent application number | Title | Published |
20150136778 | INFLATABLE HATCH SEALING DEVICE - Embodiments of the present invention relate to apparatuses, systems, and methods for constructing, installing, and using an inflatable hatch sealing device in environmentally sealing a manhole. In particular, the inflatable hatch sealing device has a sealing assembly with a directed inflatable air bladder, and the sealing assembly is rotatable relative to a contact disc. | 05-21-2015 |
20140060685 | LOCK DOWN UNITS FOR LOADING ARMS AND LOADING ARMS COMPRISING THE SAME - Lock down units and loading arms with lock down units are disclosed. According to one embodiment, a loading arm includes a product delivery pipe pivotally coupled to a product standpipe such that the product delivery pipe is rotatable in a vertical plane. A rocker assembly is coupled to the product delivery pipe. A support arm may be pivotally connected to the product standpipe and slidably coupled to the rocker assembly such that the support arm and the rocker assembly are slidable with respect to one another. The support arm comprises a plurality of slots. A locking pawl is affixed to the rocker assembly and selectively engagable with the slots such that, when the locking pawl is engaged with a slot of the support arm, the locking pawl couples the support arm to the rocker assembly, thereby preventing the product delivery pipe from being raised in the vertical plane. | 03-06-2014 |