Bradford, Jr.
Floyd John Bradford, Jr., Houston, TX US
Patent application number | Description | Published |
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20140178210 | Tubing inserted balance pump with internal fluid passageway - Pump assemblies for use with a subsurface fluid reservoir include an upper portion connected to a fluid conduit extending to the surface, a lower portion connected to the upper portion and in fluid communication with a fluid reservoir of the wellbore, and a plunger assembly movably located within the upper and lower portion of the pump assembly. As the fluid pressure within the tubing string, fluidly isolated from the fluid conduit, increases, fluid is forced into the pump assembly moving the plunger assembly upwell to draw fluid into the pump and forces fluid into the fluid conduit. As the fluid pressure within the tubing string decreases, movement of the plunger assembly forces fluid from the lower portion into the upper portion through a fluid passageway extending through the plunger assembly. | 06-26-2014 |
John Bradford, Jr., Houston, TX US
Patent application number | Description | Published |
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20140178225 | TUBING INSERTED BALANCE PUMP - Pump assemblies for use with a subsurface fluid reservoir include an upper barrel connected to a fluid filled conduit extending to the surface, a lower barrel connected to the upper barrel and in fluid communication with the reservoir, and a plunger assembly movably located within the upper and lower barrels. As the fluid pressure within production tubing, external to the pump assembly, increases, movement of the plunger draws fluid into the pump. As the fluid pressure within the production tubing decreases, the plunger pushes fluid into the production tubing. | 06-26-2014 |
Thomas E. Bradford, Jr., Brighton, MI US
Patent application number | Description | Published |
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20140251082 | POWER TRANSFER MECHANISM FOR 4WD VEHICLES WITH LOW EFFORT MODE SHIFT SYSTEM - A power transfer mechanism for a four-wheel drive vehicle includes a first shaft for transferring torque to a first driveline, a second shaft for transferring torque to a second driveline, and a transfer mechanism driving the second shaft. A mode clutch drivingly connects the first shaft to the transfer mechanism and includes a clutch gear-driven by the transfer mechanism and a mode sleeve. A sprocket associated with the transfer mechanism has internal spline teeth meshed with external spline teeth on the second shaft with a predetermined amount of backlash therebetween. A ball cam mechanism centers the backlash and permits relative rotation of the transfer mechanism and the mode sleeve to circumvent a blocked mode shift. | 09-11-2014 |