Modular fluid powered linear piston motors with harmonic coupling
| DWPI Title: Modular fluid powered linear piston motor for using pressurized fluid to drive rotational drilling assembly, has piston/harmonic drive assembly that drives over liner imparts rotation to rotor assembly |
| Abstract: A modular motor is disclosed that includes a piston/harmonic drive assembly that is axially cycled. The piston/harmonic drive assembly is coupled to a ball transfer arrangement that converts the axial motion into rotary motion to rotate a rotor that can be used to rotate a drill bit. |
| Use: Modular fluid powered linear piston motor for using pressurized fluid to drive rotational drilling assembly (claimed) used for oil drilling, geothermal drilling, and other deep earth penetration applications. |
| Advantage: The rotor components remain on centerline so as not to introduce dysfunctional lateral vibrations in the drilling assembly. The pressure supply and exhaust valve ports are modified accordingly to ensure the timings of pressure and exhaust are synchronized with the piston oscillation. |
| Novelty: The modular fluid powered linear piston motor (10) has a housing (12). A piston/harmonic drive assembly is arranged within the housing. A rotor assembly (18) is provided. The piston/harmonic drive assembly comprises a piston and a harmonic drive. A liner is arranged between the piston/harmonic drive assembly and the rotor. A valve assembly (20) is fluidly coupled to the housing. A fluid is provided from the rotor assembly to the valve assembly axially drives the piston/harmonic drive assembly over the liner. An axially driving the piston/harmonic drive assembly over the liner imparts rotation to the rotor assembly. A ball transfer arrangement (40) converts axial motion of the piston/harmonic drive assembly into rotary motion. A piston (32) is arranged between the harmonic drive (34) and the valve assembly. |
| Filed: 4/4/2016 |
| Application Number: US15090282A |
| Tech ID: SD 12977.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
| Data from Derwent World Patents Index, provided by Clarivate All rights reserved. Republication or redistribution of Clarivate content, including by framing or similar means, is prohibited without the prior written consent of Clarivate. Clarivate and its logo, as well as all other trademarks used herein are trademarks of their respective owners and used under license. |