Patent ID: 8955592
Filing Date: 2015-02-17
Classification: E21B,F16N

Abstract:
1. A grease delivery system for delivering grease to a location, the system comprising: a first grease reservoir having a first grease output and a first output device configured to output grease from the first grease reservoir; a second grease reservoir having a second grease output and a second output device configured to output grease from the second grease reservoir; a hydraulic fluid supply fluidly connected to the first and second grease reservoirs, wherein hydraulic fluid from the hydraulic fluid supply displaces grease from the first and second grease reservoirs; a common grease output for delivering grease to the location, wherein the common grease output is fluidly connected to the first and second grease outputs; and an electronically actuated valve, wherein the system is configured to, using the electronically actuated valve, output grease from the first grease reservoir to the common grease output in a first mode, from the second grease reservoir to the common grease output in a second mode, and simultaneously output grease from the first and second grease reservoirs to the common grease output in a third mode.