Electricity: electrical systems and devices – Discharging or preventing accumulation of electric charge – Structurally combined with building or vehicle
Patent
1995-01-20
1996-10-29
Shoop, Jr., William M.
Electricity: electrical systems and devices
Discharging or preventing accumulation of electric charge
Structurally combined with building or vehicle
361212, 361216, 361217, H05F 304
Patent
active
055702651
ABSTRACT:
An elongate member is coupled by a socket at one end to the aircraft surface, whilst a tip forms its other end. The electrical resistivity of the elongate member, tip and coupling is equal to or greater than 10.sup.2 ohmmeter; and are preferably molded from a high temperature thermoplastics material having an electrical resistivity equal to or greater than 10.sup.16 ohmmeter. The plastics material is selected from the group comprising polyetherimide, polyethersulphone and polyetheretherketone. The material of the tip is provided with an embedded aligned array of carbon or silicone carbide fibers while the other parts of the discharger are loaded with carbon black or coated with the same thermoplastics material loaded with 4% by weight carbon black. The adhesive used to mount the socket has an electrical resistance between 5 to 10K ohms, while that of the socket is between 5 to 10M ohms, that of the elongate member between 20 to 100M ohms, and that of the tip is between 2 to 5 ohms.
REFERENCES:
patent: 2309584 (1943-01-01), George
patent: 2466024 (1949-04-01), Hall
patent: 3767971 (1973-10-01), Patrick, Jr.
patent: 5057028 (1991-10-01), Lemke et al.
patent: 5066536 (1991-11-01), Cogswell et al.
patent: 5150786 (1992-09-01), McAllister
Ganjoo Peter
HR Smith (Technical Developments) Limited
Shoop Jr. William M.
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