Elongated member and use thereof

Details Elongated member and use thereof Elongated member and use thereof

2011-05-10

2011-05-10

Patel, Dhiru R (Department: 2835)

Electricity: conductors and insulators

With fluids or vacuum

With expansion and contraction means

C174S03100S, C174S0110BH, C174S142000, C174S0140BH, C174S167000

Reexamination Certificate

active

07939752

ABSTRACT:
An elongated member including an outer sleeve-like rigid insulator shell surrounding a high voltage conductor extending in the longitudinal direction of the shell and a gap inside the shell next to an internal wall of the shell at least partially surrounding the conductor and filled with a medium including a material of with electrically insulating properties. The medium is formed by an electrically insulating material including hollow spaces at least partially filled with gas. The material is adapted to expand upon a temperature rise thereof by reversibly compressing the hollow spaces and reducing the volume thereof.

REFERENCES:
patent: 3973077 (1976-08-01), Classon
patent: 4629822 (1986-12-01), Kitamura
patent: 5466890 (1995-11-01), Stagnitti
patent: 5466891 (1995-11-01), Freeman et al.
patent: 6140573 (2000-10-01), Smith et al.
patent: 7495172 (2009-02-01), Amerpohl
patent: 0971372 (2000-01-01), None
patent: 1445025 (1976-08-01), None
PCT/ISA/210—International Search Report—Jul. 26, 2007.
PCT/IPEA/409—International Preliminary Report on Patentability—Jul. 31, 2008.

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