Locking telescoping rod
AssigneeLiberty Hardware Mfg. Corp.
InventorJAMES LEROY DANIELS
Life of this patent
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Abstract
A compression lock assembly for an adjustable length rod assembly with inner and outer tubes is provided. The compression lock assembly has an adapter adapted to be connected to rotate with the inner tube. An elastomeric ring with an inner opening and outer diameter is concentric and disposed coaxially with the adapter. A threaded fastener extends through the elastomeric ring and is fixed to the adapter. A lock nut is disposed about the threaded fastener and fixed to rotate with the elastomeric ring. The locking nut moves along the threaded fastener to compress the elastomeric ring and expand the outer diameter from a first diameter to a second diameter greater than the first diameter as the elastomeric ring is rotated relative to the adapter.
Claims20
An adjustable length rod assembly comprising:
- an inner tube defining a longitudinal axis;
- an outer tube sized to receive the inner tube,
- a lock mechanism secured to an end of the inner tube;
- and
- wherein rotation of the outer tube relative to inner tube causes the lock mechanism to expand a first diameter in an unlocked position to one of a plurality of locked positions having a second diameter greater than the first diameter thereby providing an outward radial force against an internal surface of the outer tube to prevent translation of the inner tube relative to the outer tube.
The adjustable length rod assembly of claim 14, wherein the lock mechanism further comprises a compression spring to provide a biasing force between the inner and outer tubes in a longitudinal direction.
A compression lock assembly for an adjustable length rod assembly with inner and outer tubes, the compression lock assembly comprising:
- an elastomeric body connected to a first end of the inner tube;
- a threaded fastener extending through the elastomeric body and fixed rotate with the inner tube;
- wherein the rotation of the inner tube and threaded fastener compresses the elastomeric body and expand the elastomeric body from a first diameter to a second diameter greater than the first diameter.
Dependencies are inferred from the claim text.