James A Renfro, 812822 Club Meadow Dr, Garland, TX 75043
James Renfro Phones & Addresses
2822 Club Meadow Dr, Garland, TX 75043
805 Wildgrove Dr, Garland, TX 75041 972-8648295
Dallas, TX
West Monroe, LA
Monroe, LA
San Augustine, TX
Mentions for James A Renfro
Publications & IP owners
Us Patents
Well Apparatus
US Patent:
4624310, Nov 25, 1986
Filed:
May 20, 1985
Appl. No.:
6/736232
Inventors:
Ralph H. Echols - Carrollton TX
Bhanubhai H. Patel - Grand Prairie TX
James Renfro - Valencia CA
Bhanubhai H. Patel - Grand Prairie TX
James Renfro - Valencia CA
Assignee:
Otis Engineering Corporation - Carrollton TX
International Classification:
E21B 4312
E21B 3410
E21B 3410
US Classification:
166106
Abstract:
A well system employs a pump to lift liquid through a primary tubing and subsurface safety valve. The tubing passes through a packer and a vent valve vents gas from the well through the packer. The power transfer means may extend through the vent valve and the vent valve may also control a cross-over in the packer for recirculation of liquid to the pump when the well is shut-in. The vent valve has associated therewith a kill valve permitting pumping of kill fluid into the well. The vent remains closed in the presence of ambient pressure up to a selected value and above this value the kill valve opens thus permitting testing of the packer with annulus pressure below the selected pressure and pump through to kill the well with pressure above the selected pressure.
Hand Held Multi-Purpose Utensil
US Patent:
2014023, Aug 21, 2014
Filed:
Feb 15, 2013
Appl. No.:
13/767963
Inventors:
James R. Renfro - Dallas TX, US
Ephraim R. Renfro - Dallas TX, US
Lilian L. Renfro - Dallas TX, US
Ephraim R. Renfro - Dallas TX, US
Lilian L. Renfro - Dallas TX, US
International Classification:
A47J 43/28
US Classification:
425281
Abstract:
A hand held multi-purpose utensil of a constant diameter cylindrical handle or grip and a concave and convex shaped blade which has a curved scalloped shaped working edge. The handle or grip begins at the base of the blade and continues away from the blade along its centerline. The concave surface of the blade has regularly spaced rows of identical divots. At the base of the blade, the shape of the blade becomes convex. A portion of the handle or grip has as cross hatched pattern etched or grooved. The blade and handle is continuous with no connections or parts and comprises a volume of metal, plastic, ceramic, composite or other suitable material.
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