Communications: radio wave antennas – Antennas – With vehicle
Reexamination Certificate
2000-03-07
2001-10-09
Wong, Don (Department: 2821)
Communications: radio wave antennas
Antennas
With vehicle
C343S715000, C343S888000, C343S901000, C343S906000
Reexamination Certificate
active
06300912
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a compact dipole antenna with telescopic elements for mounting inside of vehicles, offices, homes or boats.
2. Description of the Related Art
Antennas exist for vehicles, offices, homes or boats, but the need still exists for a small, compact antenna that can be easily mounted, is simple in construction, is simple to manufacture, is simple to install, is tunable and which can be easily repaired.
SUMMARY OF THE INVENTION
The present invention in its broadest form comprises a compact, simple to install dipole antenna comprising a base having a flat face, a pair of spaced, brass cores contained in the base with portions of the cores exposed at discrete surfaces of the base, a coaxial cable having an outer conductor and an inner conductor with one end of the cable contained in the base, a first connector directly connecting the outer conductor of the coaxial cable to one of the brass cores, a second connector directly connecting the inner conductor with the other brass core, and a pair of telescoping brass pole elements mounted to the exposed portions of the cores.
In a more particular form, the invention consists of a compact, simple to install dipole antenna that has a base having a flat face, a pair of spaced, coaxially aligned brass cores contained in the base with threaded portions projecting, a coaxial cable having one end contained in the base, a first connector directly connecting the outer conductor of the coaxial cable to one of the brass cores, a second connector directly connecting the inner conductor of the coaxial cable with the other brass core, and a pair of telescoping brass pole elements each being threadedly mounted on one of the threaded projections.
REFERENCES:
patent: 2604593 (1952-07-01), Trowbridge
patent: 4523197 (1985-06-01), Imazeki
patent: 4804973 (1989-02-01), Ackman
patent: 5805113 (1998-09-01), Ogino et al.
patent: 6019340 (2000-02-01), Hanaoka
Antenna World, Inc.
Chen Shih-Chao
Fleit Martin
Wong Don
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