Anticipate This!™ | Patent and Trademark Law Blog

They Invented What? (No. 208)

Posted in They Invented What? by Jake Ward on August 17, 2011

U.S. Pat. No. 5,214,873:  Electrofishing pole.

I claim:

1. A submersible barrier for shielding a portable manually manipulatable anode electrode of a pair of anode and cathode electrodes used with portable electrofishing apparatus to be supported by an operator, which apparatus includes an electric circuit unit electrically connected with the anode and cathode electrode for providing DC pulses, said barrier comprising in combination:

a) a wall disposed about the portable anode electrode for shielding the portable electrode against contact by the operator or other objects when the portable anode electrode is out of the water and for shielding the portable anode electrode against contact by the operator, fish and other objects when the portable anode electrode is in the water;

b) means for accommodating water flow through said wall to establish an electric field in the water surrounding the portable anode electrode;

c) means for securing and maintaining said wall about the portable anode electrode when the portable anode electrode is manipulated into and out of the water by the operator; and

d) means for transporting said electrofishing apparatus during use of said electrofishing apparatus.

2. The barrier as set forth in claim 1 wherein said accommodating means comprises a plurality of apertures.

3. The barrier as set forth in claim 1 wherein said wall is of electrically non conducting material.

4. The barrier as set forth in claim 1 wherein said wall includes means for mounting said wall upon different configurations of the electrode.

5. The barrier as set forth in claim 1 wherein said wall includes a plurality of segregable elements, each of said elements including wall means for engaging the portable electrode to support said element upon the portable electrode.

6. The barrier as set forth in claim 5 wherein said accommodating means comprises apertures disposed in said wall means of each element of said plurality of elements.

7. The barrier as set forth in claim 6 wherein said securing means comprises at least a pair of said apertures disposed in each of said wall means for penetrably receiving the electrode.

8. A barrier for shielding an electrode of a pair of electrodes used with electrofishing apparatus, said barrier comprising in combination:

a) a wall disposed about the electrode, said wall including a plurality of segregable elements, each of said elements comprising a hollow sphere having a spherical wall;

b) means for accommodating water flow through said wall to establish an electric field in the water surrounding the electrode; and

c) means for securing said wall about the electrode.

9. The barrier as set forth in claim 8 wherein said accommodating means comprises apertures disposed in said spherical wall.

10. The barrier as set forth in claim 9 wherein said securing means comprises at least two of said apertures penetrably engaged by the electrode.

11. The barrier as set forth in claim 9 wherein said apertures comprise at least two diametricly opposed apertures and wherein said securing means comprises said two diametrically opposed apertures penetrably engaged by the electrode.

12. A barrier for shielding at least one electrode of a pair of portable electrodes electrically interconnected with, supported by and extending from a portable operator carried electrofishing apparatus to prevent contact with the one electrode without significantly degrading the electrical field established between the pair of electrodes upon use of the electrofishing apparatus in a body of water, said barrier comprising in combination:

a) a water permeable wall of electrically non conductive material disposed about the major part of the one electrode;

b) means for securing said wall with the one electrode, said securing means including means for maintaining essentially all of said wall spaced apart from the one electrode; and

c) means for transporting the electrofishing apparatus during use of the electrofishing apparatus in the body of water.

13. The barrier as set forth in claim 12 wherein said wall includes a plurality of apertures.

14. The barrier as set forth in claim 13 wherein said securing means comprises at least one of said apertures for penetrably receiving the electrode to be shielded.

15. The barrier as set forth in claim 14 wherein said wall comprises a plurality of segregable elements.

16. A barrier for shielding at least one of a pair of electrodes of electrofishing apparatus to prevent contact with the shielded electrode without significantly degrading the electrical field established between the pair of electrodes upon actuating the electrofishing apparatus, said barrier comprising in combination:

a) a water permeable wall of electrically non conductive material disposed about the major part of the shielded electrode, said wall comprising a plurality of segregable elements and wherein each element of said plurality of elements comprises a hollow sphere having an apertured spherical wall; and

b) means for securing said wall with the electrode to be shielded.

17. The barrier as set forth in claim 16 wherein said apertured spherical wall includes a plurality of apertures and wherein said securing means comprises at least two of said apertures penetrably receiving the shielded electrode.

18. Portable apparatus for electrofishing in a body of water, said apparatus comprising in combination:

a) at least a pair of portable electrodes capable of being carried by the operator and capable of being manipulated by the operator during use, one of said electrodes being an anode electrode and the other of said electrodes being a cathode electrode;

b) portable means for generating and transmitting an electrical signal between said pair of portable electrodes to create an electrical field therebetween, said generating and transmitting means including means for carrying said generating and transmitting means by the operator during such signal generation and transmission; and

c) means for shielding at least one electrode of said pair of portable electrodes against contact of said one electrode by the operator or an object, said shielding means being water permeable to permit creation of the electrical field in water upon immersion of said pair of electrodes into the body of water.

19. The apparatus as set forth in claim 18 wherein said shielding means comprises a plurality of segregable elements, each of said elements being mounted upon said at least one electrode.

20. Apparatus for electrofishing in a body of water, said apparatus comprising in combination:

a) at least a pair of electrodes, one of said electrodes being an anode electrode and the other of said electrodes being a cathode electrode;

b) means for generating and transmitting an electrical signal between said pair of electrodes to create an electrical field therebetween; and

c) means for shielding at least one electrode of said pair of electrodes against contact by a person or object, said shielding means being water permeable to permit creation of the electrical field upon immersion into the body of water of said pair of electrodes, said shielding means comprising a plurality of segregable elements and wherein each element of said plurality of elements comprises a hollow sphere.

21. The apparatus as set forth in claim 20 wherein said shielding means includes aperture means disposed in each of said spheres for penetrably receiving the shielded electrode.

22. A method for shielding a manually manipulatable electrode of a pair of electrodes used with electrofishing apparatus transported by an operator during use, said method comprising the steps of:

a) mounting the electrofishing apparatus upon the operator;

b) establishing a barrier about the manipulatable electrode to shield the manipulatable electrode against contact with the operator or an other object;

c) supporting at least the major part of the barrier in a spaced apart relationship with the manipulatable electrode; and

d) accommodating water flow through the barrier to establish enveloping contact between the water and the manipulatable electrode upon immersion of the manipulatable electrode in a body of water during electrofishing.

23. The method as set forth in claim 22 including the step of penetrably securing the barrier upon the manipulatable electrode.

24. The method as set forth in claim 22 wherein said step of supporting includes the step locating a plurality of adjacent elements constituting the barrier along the electrode.

25. A method for shielding an electrode used with electrofishing apparatus, said method comprising the steps of:

a) establishing a barrier about the electrode to shield the electrode against contact with a person or object, said step of establishing includes the step locating a plurality of adjacent elements constituting the barrier about the electrode and wherein said step of locating includes the step of penetrably engaging a plurality of hollow apertured spheres along the electrode; and

b) accommodating water flow through the barrier to establish enveloping contact between the water and the shielded electrode upon immersion of the electrode in a body of water during electrofishing.

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