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US 8,477,078 B2Granted
QuadLock
AssigneeAl Ludwick
InventorClifford Alvin Ludwick
Life of this patent
Estimating the term…
Abstract
Maintenance on a high frequency Amateur Radio cubical quad antenna mounted on a tilt over tower typically requires the use of a ladder of scaffold. While tiltover towers are common, when used with a cubical quad antenna the tilting is limited by size of the cubical quad elements. The user must still utilize a ladder, scaffold or other device to reach all points on the antenna. The QuadLock addresses this issue and allows the tower and antenna to be tilted all the way to ground level for maintenance.
Claims4
A QuadLock providing a unique mechanism for a cubical quad antenna tower comprising:
- a boom plate for attaching to an antenna boom;
- a movable plate for attaching an electrical antenna element;
- a pair of thrust bearings attached to the boom plate;
- and
- a shaft for attaching the movable plate to the thrust bearings that allows the movable plate to swivel freely when the antenna element and tower are lowered all the way to ground level.
2 more elements
Dependencies are inferred from the claim text.