Fixing structure of paddle

Details Fixing structure of paddle Fixing structure of paddle

2002-11-01

2003-09-30

Swinehart, Ed (Department: 3617)

Marine propulsion

Oar or paddle

Reexamination Certificate

active

06626716

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to paddles, and particularly to a fixing structure of a paddle.
BACKGROUND OF THE INVENTION
With reference to
FIG. 1
, a prior art structure with U.S. Ser. No. 10/158447, “ADJUSTABLE FIXING STRUCTURE OF PADDLE FOR ADJUSTING LENGTH OF PADDLE”, is clearly shown. The prior art paddle has an outer tube
1
, an inner tube
2
and a tightening means
3
for tightening the outer tube
1
and outer tube
2
.
The tightening means
3
is formed by a positioning ring
31
at one end portion of the outer tube
1
and an engaging portion
32
at one end portion of the inner tube
2
. The positioning ring
31
is buckled to the engaging portion
32
.
One end portion of the positioning ring
31
is protruded with an eccentric buckle
311
, and one end of the buckle
311
is protruded with an elastomer
312
. The elastomer
312
can be pushed and pulled so that the elastomer
312
can be engaged in an eccentric embedded hole
322
of the engaging portion
32
.
An interior of the engaging portion
32
has a stepped through hole. One small end of the through hole is the eccentric embedded hole
322
and the inner side of the embedded hole
322
has an edge
323
for resisting against the elastomer
312
of the positioning ring
31
.
The eccentric buckle
311
of the positioning ring
31
is inserted into a through hole of the engaging portion
32
. The elastomer
312
of the positioning ring
31
is exactly inserted into the eccentric embedded hole
322
of the engaging portion
32
. Thereby, when the engaging portion
32
rotates, the engaging portion
32
will separate from a center of the positioning ring
31
gradually due to eccentricity so that a center of the engaging portion
32
will not align with a center of the positioning ring
31
, thereby, the lateral side of the engaging portion
32
will apply a force to the lateral side of the positioning ring
31
Thus, the outer tube
1
and inner tube
2
are tightly coupled with one another.
In above mentioned prior art structure, the buckle
311
of the positioning ring
31
is eccentric to the engaging portion
32
so that the diameter expands gradually. Thereby, the positioning ring resists against the outer tube. However, since the plastic products have smooth surface. Thus the surface of the positioning ring contacts the surface of the outer tube. Thereby, if an improper force is applied, the positioning ring is released from the outer tube. Thus, it is imperfect in the prior art.
SUMMARY OF THE INVENTION
Accordingly, the primary object of the present invention is to provide a A fixing structure of a paddle having an outer tube, an inner tube and a tightening means for tightening the outer tube and inner tube; the tightening means; the tightening means being formed by a positioning ring at one end portion of the outer tube and an engaging portion at one end portion of the inner tube; the positioning ring being buckled to the engaging portion; one end portion of the positioning ring is protruded with an eccentric buckle, and one end of the buckle is protruded with an elastomer; the elastomer is pushed and pulled so that the elastomer is engaged in an eccentric embedded hole of the engaging portion; an interior of the engaging portion has an eccentric embedding hole and an inner edge of the embedding hole is formed with a stepped edge for resisting against an buckle piece of the positioning ring; when the engaging portion rotates, a part of circular edge of the position ring will protrude out of the circular edge of the engaging portion so that the diameter thereof will expand to tightly resist against the outer tube; characterized in that: the annular side of the position ring is formed with irregular buckling textures; the buckling textures are a plurality of small particles so that the position ring substantially resists against an inner side of the outer tub; thereby, the outer tube tightly resists against the positioning ring.


REFERENCES:
patent: 4820216 (1989-04-01), Masters
patent: 6022255 (2000-02-01), Lukanovich

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