A tube coil for a double fired coker heater wherein the tube coil has at least two independent flow passes in an intertwined serpentine pattern. The tubes are located in a common plane and plumbed in parallel with one another. These tube coils can be used in a number of configurations within the radiant section …

Legal parties

Inventors (applicants): William C. Gibson, Robert L. Gibson
Assignees (initial): Great Southern Independent LLC (Broken Arrow, US)
Agents: Gable Gotwals (attorney)

The application was examined by Renee E Robinson (USPTO dept. 1774)


  • 1. A coker heater comprising: …
  • 2. The coker heater of claim 1 , further comprising said tubes being plumbed in parallel …
  • 3. The coker heater of claim 1 further comprising a convection section and a stack …

Cited documents


  • Pickell et al. US 4986222 A / 122/6.R, Jan. 1, 1991
  • Melton et al. US 2004/0175663 A1 / 431/9, Sep. 1, 2004
  • Barnett et al. US 6237545 B1 / 122/235.23, May. 1, 2001
  • Gibson et al. US 6241855 B1 / 202/124, Jun. 1, 2001


Brief Description of the Drawings

Preferred embodiments of the invention will now be described in further detail. Other features, aspects, and advantages of the present invention will become better understood with regard to the following …


Reference to Pending Applications

This application is not based upon any pending domestic or international patent …

Detailed Description of the Preferred Embodiment(s)

Turning now to FIG. 1 which shows the coil configuration for a typical prior art coil 20. The coil 20 has a single tube or flow pass with an inlet …

More details about Intertwined Tube Coil Arrangement for a Delayed Coker Heater

Miscellaneous patent data

The grant number is 08771475, the assignee location is Broken Arrow (US); its organization is Great Southern Independent LLC, the invention details are shown in 6 figures, the agent - Gable Gotwals, the assignee is a United States company, numbered 12/622,062 (application), 10 claims comprise the protection scope, the patent particularly claims a coker heater comprising…, the patent grant was extended by 756 days, the drawings include the following: Schematic sectional end view of a pair, Intertwined Tube Coil Arrangement for a Delayed, Schematic showing the typical prior, Schematic sectional end view of a pair, an application examiner - Renee E Robinson (1774 USPTO department), developed by William C. Gibson et al., the application publication date is Nov. 19, 2009, originally classified under Furnaces and flues, similar classification categories are Combined Vaporizing and Condensing, acid salts, Hydrocarbons, the refining step being an extraction, produced by partial combustion of the material to be cracked or by combustion of another hydrocarbon, Rotary, Refining, Fluid injectors, partitions, including at least one alkaline-treatment step, the grant publication date is Jul. 8, 2014, the claim number 1 is selected as exemplary, the inventor's location - Tulsa, OK, the known inventor's name is Gibson William C., the invention description is illustrated by 3 drawings, the invention is titled Intertwined Tube Coil Arrangement for a Delayed Coker Heater, the applicant's city - Tulsa, state - OK, the recorded applicant's name is Gibson William C.

Invention classification information

The invention is classified under Special means for heating, Internal flues, With heating in tubular confined stream, Tubes and Connections, Tube furnaces, Furnaces and flues. The designated search classifications include Tubes and Connections, Special means for heating, With heating in tubular confined stream, Internal flues, Furnaces and flues.

Patent details
Publication number 08771475
Publication date Jul. 8, 2014
Kind code B1
Application number 12/622,062
Application date Nov. 19, 2009
Application type U
Application series code 12
Extension term 756
National classification 196/116
Total number of claims 10
Exemplary claims 1
Number of drawings 3
Number of figures 6
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