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US 2018/0279726 A1Published application
Pole shaft device
OwnerSun Ho HWANGinventor
Life of this patent
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Abstract
The present invention provides a pole shaft device including an outer shaft (10); an inner shaft (20) which is disposed in the outer shaft (10) and slides along the inside of the outer shaft (10); a fixing member (30) which is fixed on the inner shaft (20) and has an inclined surface formed in the circumferential direction thereof; and an extension member (40) which is coupled to the outer shaft (10) so as to be movable in the longitudinal direction thereof, and is extended by friction with the inclined surface so as to fix the outer shaft (10) and the inner shaft (20).
Claims10
A pole shaft device, comprising:
- an outer shaft (10);
- an inner shaft (20) which is disposed in the outer shaft (10) and slides along the inside of the outer shaft (10);
- a fixing member (30) which is fixed on the inner shaft (20) and has an inclined surface formed in the circumferential direction thereof;
- and
- an extension member (40) which is coupled to the outer shaft (10) so as to be movable in the longitudinal direction thereof and extended by friction with the inclined surface so as to fix the outer shaft (10) and the inner shaft (20).
2 more elements
Dependencies are inferred from the claim text.