The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 1992
Filed:
Jun. 08, 1990
David P Brown, Salt Lake City, UT (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A portable wheeled hand truck mounts a rotary actuator, powered by a hand or motor-operated pump also contained on the truck, for lifting and rotating a diffused aeration piping array from a liquid/slurry treatment tank into a working and servicing position adjacent to the tank, such as a walkway. The wheeled truck is hand maneuvered so that the powered end of the actuator is in alignment with a connection arm extending from a pivotable pipe which is part of the array. A multi-positionable handle is included on the hand truck which, in an essentially horizontal position, is temporarily fixed to a tank walkway surface to support the reaction forces incident to lifting and rotating the heavy mass of the piping array. When not so fixed, the handle may be moved to an essentially vertical position for storage and to an intermediate position to maneuver the truck into alignment with the piping array connector arm.