Safety sinker

A safety sinker includes a sinker connected to a fish line through a sinker coupler, wherein the sinker coupler may be pulled, by means of a fish line, to disconnect the sinker from the fish line when the sinker is squeezed in between rocks or somethings during fishing. The sinker coupler includes a fork end having two semi-sphere members made thereon for connecting the sinker when they are squeezed to form into a spherical configuration and inserted into the inner chamber of the sinker. The two semi-sphere members may be squeezed to form into a spherical configuration again, by means of a pull force through the fish line, so as to slip away from the sinker and to disconnect the fish line from the sinker.

BACKGROUND OF THE INVENTION 
The present invention is related to a kind of safety sinker and more 
particularly to the one which will be rapidly disconnected from a fish 
line when it is retained by something in the water during fishing. 
Fishing was an activity to catch fish for a living in ancient times. It has 
become an activity not only for living but also for sport. It is also a 
good way to help one get rid of the mundane affairs. However, one may feel 
disappointed if one's fishing tackle is damaged during fishing. It is 
commonly happened that a sinker is squeezed in between somethings in the 
water during fishing. When one is encountering this problem the only way 
one can do is to cut off the fish line. When a fish line is cut off, the 
connected sinker, fishing hook and float etc., must be given up at the 
same time to cause big loss to the user. If no any spares available, one 
shall have to stop enjoying fishing. 
It is therefore, the main object of the present invention to provide such a 
safety sinker which will be automatically disconnected from a fish line 
when it is squeezed in between somethings in the water during fishing so 
as to permit collection of fish line. 
Another object of the present invention is to provide such a safety sinker 
which can be efficiently connected to a fish line.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
Turning now to the annexed drawings in detail, therein illustrated is a 
safety sinker embodying the present invention. The safety sinker coupler 
(10) is unitarily made of resilient plastic material through shape molding 
process and generally comprised of a retaining ring portion (11) at the 
top for insertion therein through the gap (12), a neck portion (13) 
extending downward from the retaining ring portion (11), and two opposite 
semi-sphere members (14) and (15) made on the two terminals of the fork 
end portion extending from the neck portion (13). The two semi-sphere 
members (14) and (15) of the sinker coupler (10) may be incorporated to 
form a sphere for insertion into a sinker. According to the present 
invention, the sinker (20) includes an opening (21) communicating with its 
inner chamber (22). The opening (21) is properly made in size just 
suitable for passing therethrough of the two semi-sphere members (14) and 
(15) when the two semi-sphere members (14) and (15) are connected into a 
spherical configuration. As soon as the two semi-sphere members (14) and 
(15) are connected into a spherical configuration and inserted into the 
inner chamber (22) of the sinker (20) through the opening (21), the two 
semi-sphere members (14) and (15) will automatically jump apart at the 
corner (23) through the effect of elastic resilience, to firmly connect 
the sinker (20) to the fish line (30) (as shown in FIG. 2). 
If the sinker (20) is squeezed in between rocks or something else during 
fishing, the pull force applied on the fish line (30) will drive the two 
semi-sphere members (14) and (15) to close into a spherical configuration 
so as to slip away from the constraint of the inner chamber (22) of the 
sinker (20) through the opening (21). Thus, the fish line (30) and the 
sinker coupler (10) can be smoothly received back for further application 
after a new sinker is attached to the sinker coupler (10). Therefore, the 
present invention can help to minimize the loss in case the sinker is 
squeezed in between rocks in water during fishing.