Collapsible crustacean trap
An improved crustacean, fish & animal trap comprising a collapsible hoop and mesh structure to minimize storage size. The invention is unique in that it collapses through the manipulation of flexible hoops to a size minimized in all three dimensions. The primary configurations would be for crab, prawns and lobster/crayfish; however, in slightly different configurations, can be used to catch or cage animals, fish and other crustaceans. Another embodiment of the trap would feature only one hoop and would be used as a “lift trap.”
The non-commercial trapping of crustaceans is a pastime enjoyed by thousands of people worldwide. One of the few inhibiting factors in this pursuit is the nature of the crustacean trap itself. It is often bulky and awkward to carry and store. The collapsible crustacean trap solves these problems. There are many collapsible crustacean traps on the market today but most of them do not form into the ultimate shape or size. The ultimate shape being a circular trap so that the crustaceans can easily circle and find the entrance. The ultimate size being large enough so that large amounts of bait can be placed in it and still have adequate separation from the outside wall causing the crustaceans to realize they must find an entrance to get to the food. Patented square/rectangular collapsing traps include inventions by Eric C. Wass (Patent #706,299), Alan N. McKenzie (Patent #571,264), John O. Jonason (Patent #176,434) and Gerald J Cheramie (Patent Application 20040881995). These traps are often complicated to assemble and are not as efficient as circular traps (proven by the commercial designs). There are circular collapsible traps on the market like that envisioned by Charles Ponzo (U.S. Pat. No. 4,587,758) but they only incorporate a single stage of collapsing making it bulky for storing. Ladner Traps of Delta, British Columbia, Canada, also have a circular trap that collapses and folds in half. This design is an improvement on others but still lacks the assembled volume of the present invention and is considerably larger when collapsed in its storage state.
BRIEF SUMMARY OF INVENTIONThe present invention, in its standard double hoop configuration, is superior to all existing collapsing traps as it is circular in design and easily has the best volume expansion ratio of approximately 25:1. Most collapsing traps have only one stage of collapsing, namely reducing its size in two dimensions only. The present invention adds another stage of collapsing to allow it to minimize in all dimensions. The present invention, because of its superior collapsibility, is well suited to applications where there are storage limitations such as in cruisers, sailboats, tenders, kayaks, canoes, floatplanes, automobiles, and recreational vehicles or when traveling in general.
The present invention, once assembled, can be deployed into the water and let down to settle on the seafloor/freshwater floor. A rope affixed to a bridal, which in turn is affixed to the trap, generally controls the deployment. A float can be attached to the upper end of the rope if the trap is to be left unattended.
The present invention is a portable frame and mesh trap defined by its unique collapsibility. Its collapsibility is obtained from the manipulation of a flexible hoop or hoops that typically cuts its height by 90% (for the double hoop embodiment) and its diameter by 50% (for all embodiments), bettering its storage ability. There are two main embodiments of this trap: single hoop (an open ‘lift trap’) and double hoop (similar to a standard enclosed circular trap). The uniqueness of the trap is derived mostly from the second stage in folding the trap for storage. The first stage, common in traps, is releasing struts to allow the top of the trap to nest with the bottom of the trap, reducing its size vertically. The typical process in stage two in collapsing the hoop(s) would be to grasp opposite sides (looking at the hoop(s) as a clock, grasp them at the 3 & 9 o'clock positions) and force them together with a slight twist to form a figure eight. A clamp may be used to secure the created waist. Fold the outside curves (originally at the 12 & 6 o'clock positions) of the figure eight toward one another until they are touching. A clamp may be used to secure the hoop(s) together at this point as well. The other necessary parts of the trap are incorporated into the resulting minimized package.
The present invention is distinct from all other traps in the method by which it is collapsed and conversely setup. The method is similar to the folding and storing of a band saw blade. It is also similar to the method defining the invention described by U.S. Pat. No. 4,815,784 for an automobile sunshade. In this patent a sunshield is collapsed by twisting and folding similar members to attain dramatically reduced size dimensions.
The primary configurations for the present invention would be for crabs, prawns, lobsters and crayfish. These traps, in slightly different configurations, can be used to catch and/or contain animals, fish and other crustaceans. The entrance means, as referred to in the Claims, can be any structure applied to the opening that allows the species to be captured (target species) to enter the trap and not be able to escape unless regulations require otherwise. These structures include, but are not restricted to: mesh funnels, swinging one-way gates and plastic overlapping fingers such as a neptune's trigger. Any species that are meant to be trapped by the present invention are referred to in the Claims as objects.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
Although the disclosure hereof is detailed and exact to enable those skilled in the art to practice the invention, the physical embodiments herein disclosed merely exemplify the invention that may be embodied in other specific structure. While the preferred embodiment has been described, the details may be changed without departing from the invention, which is defined by the Claims.
Crab trap 100 in
Most collapsing crab traps have only one stage of collapsing, namely reducing their size in two dimensions only. Crab trap 100 adds another stage of collapsing to allow it to minimize in all dimensions.
Crab trap 200 is collapsed, as is crab trap 100, by removing the frames 26. The funnels are fully deformable once the tension lines 39 are released. The full procedure to minimize the trap is the same as crab trap 100 (illustrated with
Both crab trap 100 and 200 can easily be transformed into other crustacean traps by varying the mesh netting size and strength. Prawns could be caught with smaller mesh incorporated into the design whereas lobster would need a stronger mesh. Typically, the flexible mesh described in the Claims is nylon or polyester netting. The biodegradable mesh is typically cotton netting.
Crab trap 300 collapses by the same method as crab trap 100 in
Crab trap 300, as illustrated in
Crab traps 100, 200 and 300 have structures primarily made of stainless steel, as this material is better suited to the marine environment then most materials as it is less prone to degradation. However, composite materials, plastics, reinforced plastics/rubber and a combination of steel and plastics could easily be used to make any part of the trap including the flexible hoops. These traps are scalable in size to fit different applications.
Claims
1. A collapsible trap comprising:
- one or more flexible hoops, wherein said flexible hoops are adapted to be manipulated to reduce their circumferential dimensions through the twisting of said flexible hoops about their diameters to form substantially figure-eight configurations and the folding of said flexible hoops about the centres of said figure-eight configurations and
- a flexible mesh attached to substantially the entire circumferential edge of said one or more flexible hoops.
2. A collapsible trap comprising:
- a top flexible hoop and a bottom flexible hoop, wherein said top flexible hoop and said bottom flexible hoop are adapted to be manipulated to reduce the circumferential dimensions of said top flexible hoop and said bottom flexible hoop,
- one or more structural means connecting said top flexible hoop with said bottom flexible hoop wherein said one or more structural means stabilize said top flexible hoop in a fixed position above said bottom flexible hoop,
- a flexible mesh connecting substantially the entire circumferential edges of said top flexible hoop with said bottom flexible hoop, wherein said flexible mesh encloses the space created by the connection of said top flexible hoop with said bottom flexible hoop by said one or more structural means,
- one or more openings located in said collapsible trap to allow for the entrance of objects into the space created by the connection by said one or more structural means of said top flexible hoop with said bottom flexible hoop,
3. The collapsible trap as claimed in claim 2 wherein said structural means comprise struts that are detachable from one or both of said top flexible hoop and said bottom flexible hoop.
4. The collapsible trap as claimed in claim 2 wherein said structural means comprise struts that are foldable.
5. The collapsible trap as claimed in claim 3 wherein said struts comprise frames forming said openings.
6. The collapsible trap as claimed in claim 5 wherein said openings comprise a flexible mesh funnel.
7. The collapsible trap as claimed in claim 5 wherein said openings comprise a one-way swinging gate.
8. The collapsible trap as claimed in claim 7 wherein said one-way swinging gate comprises a hinging means, to allow the gate to swing on a horizontal axis, situated between said top flexible hoop and said bottom flexible hoop.
9. The collapsible trap as claimed in claim 5 wherein said openings comprise an entrance means to provide an object a one-way path into the trap.
10. The collapsible trap as claimed in claim 1 wherein the said flexible mesh comprises netting.
11. The collapsible trap as claimed in claim 2 wherein the said flexible mesh comprises netting.
12. The collapsible trap as claimed in claim 1 further comprising:
- a bridal connected to the top of said collapsible trap and
- a lift ring connected to said bridal.
13. The collapsible trap as claimed in claim 2 further comprising:
- a bridal connected to the top of said collapsible trap and
- a lift ring connected to said bridal.
14. The collapsible trap as claimed in claim 12 further comprising a line attached to said lift ring to aid deployment.
15. The collapsible trap as claimed in claim 13 further comprising a line attached to said lift ring to aid deployment.
16. The collapsible trap as claimed in claim 1 further comprising a bait container located in the interior of said collapsible trap.
17. The collapsible trap as claimed in claim 2 further comprising a bait container located in the interior of said collapsible trap.
18. A method of collapsing a collapsible trap defined in claim 3 comprising the steps of:
- detaching said one or more structural means from one or both of top flexible hoop and bottom flexible hoop,
- placing said top flexible hoop directly on said bottom flexible hoop,
- twisting the opposite sides of said top flexible hoop and said bottom flexible hoop about their diameters,
- forcing the opposite sides of said top flexible hoop and said bottom flexible hoop together to form substantially figure-eight configurations, and
- folding said top flexible hoop and said bottom flexible hoop about their centres.
Type: Application
Filed: Nov 23, 2005
Publication Date: Jun 1, 2006
Inventor: Mark Philbrook (Sidney)
Application Number: 11/285,994
International Classification: A01K 69/08 (20060101); A01K 69/06 (20060101); A01K 69/10 (20060101);