Invention Grant
- Patent Title: Insulated conductor temperature limited heaters
- Patent Title (中): 绝缘导体温度限制加热器
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Application No.: US10693840Application Date: 2003-10-24
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Publication No.: US08224164B2Publication Date: 2012-07-17
- Inventor: Chester Ledlie Sandberg , Harold J. Vinegar , Christopher Kelvin Harris , Jaime Santos Son , Fredrick Gordon Carl, Jr.
- Applicant: Chester Ledlie Sandberg , Harold J. Vinegar , Christopher Kelvin Harris , Jaime Santos Son , Fredrick Gordon Carl, Jr.
- Applicant Address: US TX Houston
- Assignee: Shell Oil Company
- Current Assignee: Shell Oil Company
- Current Assignee Address: US TX Houston
- Main IPC: E21B36/04
- IPC: E21B36/04 ; E21B36/00
Abstract:
A heater may include an electrical conductor. Applying alternating current to the electrical conductor may resistively heat the electrical conductor. The electrical conductor may include an electrically resistive ferromagnetic material. The ferromagnetic material may at least partially surround a non-ferromagnetic material. The heater may provide a reduced amount of heat above or near a selected temperature. An electrical insulator may at least partially surround the electrical conductor. A sheath may at least partially surround the electrical insulator.
Public/Granted literature
- US20040140096A1 Insulated conductor temperature limited heaters Public/Granted day:2004-07-22
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