Fishing scent delivery system

This invention provides a fishing scent delivery system comprising an inflatable bladder, a means for instilling a fishing scent material in said bladder under pressure and a means for allowing said fishing scent material to be released in the vicinity of a fishing lure at a desired, controlled rate.

BACKGROUND OF THE INVENTION 
Fishing techniques have developed from the use of live bait to the use of 
many different types of artificial lures. Recently, a number of scents 
have been manufactured to address the highly developed sensory system in 
fish. The presently employed application techniques use active diffusion 
or runoff from artificial lures and do not provide a positive continuous 
release. The bait or lure must be repeatedly sprayed or painted to keep 
the scent on the bait, as the scent is rapidly lost in running water or 
from active baits. A recent development has been the use of a pouch to 
hold the scent longer. 
SUMMARY OF THE INVENTION 
The present invention provides an active fishing scent release or delivery 
system comprising an inflatable bladder, a means for instilling a fishing 
scent material in said bladder under pressure and a means for allowing 
said fishing scent material to be released in the vicinity of a fishing 
lure at a desired, controlled rate.

Referring to FIG. 1, a fishing scent delivery system 10 in accordance with 
one embodiment of the present invention is shown fitted to a standard 
syringe 12 via an IN - OUT port 28 through a pressure fitting 30 such as 
further illustrated in FIG. 2. Bladder 14 is shown in the empty condition. 
Wire 16 passes through bladder 14, plug 18 and end 36 of IN - OUT port 28 
to connectors 20 for connecting to fish hook 22 and line 24. Bladder 14 
may be made of various flexible, rubbery materials such as, for example, 
silicones, latex rubbers, natural rubbers, Kraton (Reg. TM) and the like. 
Bladder 14 is securely attached to plug 18 and end 36 of IN - OUT port 28 
by, for example, clamps or wires 26 or a water-insoluble adhesive as 
desired. 
In FIG. 2, IN - OUT port 28 is seen to comprise an internally, 
circumferentially threaded hollow cylinder 32 enclosing a centrally 
disposed tube 34 extending out both ends of cylinder 32, said tube 34 
having a first end 36 adapted to securely engage bladder 14 and a second 
end 40 adapted to fit into valve housing 38. Valve housing 38 comprises a 
hollow cylindrical portion 44 having internal shoulders 46, pressure 
fitting 30 and flange 42, said flange 42 being adapted to operatively 
engage threaded cylinder 32. Pressure fitting 30 comprises or defines 
passageway 50. Valve means 52 are adapted to fit onto shoulders 46 and 
provide a controlled and controllable filtering means between tube 34 and 
passageway 50. Tube 34 is adapted to extend into valve housing 38 when 
said valve housing is threaded into cylinder 32 such that end 40 of tube 
34 presses against valve means 52 on shoulders 46 and holds said valve 
means in secure position. IN - OUT port 28 may be covered with a cap 54 as 
shown. 
Valve means 52 may comprise a filter system such as, for example, fibrous 
materials such as cotton balls, cloth, and paper products. Also, expanded 
plastics materials may be employed, expanded polytetrafluroethylene being 
a particularly desirable material. Other materials such as, for example, 
nylon, polyesters, cellulose esters and polycarbonates may also be 
employed, it being only necessary that they be essentially water-insoluble 
and environmentally acceptable filter materials. 
In FIG. 3 an embodiment of a fishing scent delivery system in conjunction 
with a fishing plug in accordance with this invention is shown. The 
fishing scent delivery system is shown disposed within a protective 
sheath, or cylinder 56. Steel wire 16 passes through plug 58 and cylinder 
56 directly to a fish hook 60 or a fishing lure. The scent delivery system 
is disposed within the protective sheath 56 and is attached to plug 58 but 
IN - OUT port 28 extends beyond sheath 56 for ready access in adding more 
scent as needed. Bladder 14 may be closed at one end by plug 18 and may be 
fastened to plug 58 by bolt or screw 19. 
FIG. 4 illustrates the attachment of a fishing scent delivery system in 
accordance with the present invention to a fish line forward of a fishing 
lure. As shown in FIG. 4, the bladder portion of a fishing scent delivery 
system in accordance with this invention is enclosed within a cylindrical 
shell 62 while IN - OUT port 28 extends beyond said shell 62. Shell or 
protective covering 62 may be decorated, such as with a shiny or brightly 
colored plastics or metal foil to serve as an additional attractant to 
fish. The system of FIG. 4 may be attached to a fish line by means of 
rubber bands (64), or otherwise as fishermen are apt to do. 
The various parts of a fishing scent delivery system in accordance with the 
present invention may be made of various synthetic plastics or natural 
materials that are essentially water-insoluble and have the desired 
strength and flexibility or rigidity to perform their desired function as 
described. 
In operation of the fishing scent delivery system (FIG. 1) in accordance 
with the embodiment shown, syringe 12 is filled with the desired scent 
material and attached to pressure fitting 30. Valve housing 38 (FIG. 2) is 
loosened such that end 40 of tube 34 does not tightly compress valve means 
52, and the desired amount of scent material is forced into bladder 14. 
Syringe 12 is removed and valve housing 38 is tightened to the desired 
drip rate of the scent material by screwing into cylinder 32. 
In a typical embodiment of the present invention, valve means 52 may 
comprise STERISHEET 100 (Reg. TM) operating room drape material about 1.5 
inch long and 3/16 inch wide is folded lengthwise on itself several times 
so that it forms a plug adapted to fit onto shoulders 46 of IN - OUT port 
valve housing 38. Hollow cylindrical portion 44 advantageously has an 
internal diameter of about 175 thousandths, passageway 50 advantageously 
has an internal diameter of about 160 thousandths. The fit between end 40 
of tube 34 and cylindrical portion 44 is snug, i.e., a difference of about 
2 thousandths between the outside diameter of tube 34 and inside diameter 
of cylindrical portion 44 being typical. Employing a bladder 14 that will 
contain about 10 cc. of scent material valve means 52 will advantageously 
provide a substantially uniform drip rate of 10 to 20 drops per minute and 
will cause the scent material to last for about 40 minutes which will keep 
the hook and fishing lure bathed in a desired fish attractant. The 
pressure in bladder 14 when filled is advantageously below 30 psi. 
Various modifications may be made in the present invention without 
departing from the spirit or scope thereof as will be apparent to those 
skilled in the art.