1. Device for extermination of fire ants, comprising a hollowed longitudinal pipe to introduce high-pressure heated gas into fire ant mound; wherein said pipe is provided with a gas inlet and a gas flow controller to control gas flow into said pipe and a plurality of gas orifices at lower end thereof to allow said high-pressure heated gas to enter into said fire ant mound.
2. The device for extermination of fire ants according to claim 1, wherein said pipe has a conic shape at its lower end to reduce obstacles when said pipe is inserted into said fire ant mound.
3. The device for extermination of fire ants according to claim 1, further comprising a compressor to generate high-pressure gas to be supplied to said hollowed pipe.
4. The device for extermination of fire ants according to claim 3, further comprising a high-pressure gas container to store high-pressure gas generated by said compressor.
5. The device for extermination of fire ants according to claim 1, wherein said pipe has a enlarged diameter at its upper portion, wherein a pipe heater is provided to heat gas inside said pipe.
6. The device for extermination of fire ants according to claim 1, wherein said pipe is further provided a gas seal to seal gaps between said pipe and said fire ant mound when said pipe is inserted therein.
7. The device for extermination of fire ants according to claim 1, wherein said pipe has a greater diameter in its upper portion and a smaller diameter in its lower portion.
8. The device for extermination of fire ants according to claim 1, wherein said gas flow controller comprises an electric valve, through which high-pressure gas stored in said high-pressure gas container may be introduced into said pipe.
9. The device for extermination of fire ants according to claim 8, wherein said electric valve so controls entrance of said high-pressure gas into said pipe that said high-pressure gas enters into said fire ant mound in pulses.
10. The device for extermination of fire ants according to claim 1, further comprising a pressure gauge provided adjacent to said inlet of said pipe to measure gas pressure inside said pipe.
11. The device for extermination of fire ants according to claim 1, further comprising a solid cap on top of said pipe to bear shocks from external.
12. The device for extermination of fire ants according to claim 1, further comprising at least one thermometer to be located around said red ant mound.
13. Method for extermination of fire ants, comprising the steps of:
generating high-pressure gas using a compressor;
storing said high-pressure gas in a high-pressure gas container;
connecting said high-pressure gas container to gas flow controller of a pipe with a pressure-resistant pipe;
inserting said pipe into an ant mound;
supplying electric power to pipe heater in said pipe to heat gas inside said pipe; and
turning on said gas flow controller to introduce high-pressure gas in said high-pressure gas into said pipe and then to said ant mound.
14. The method for extermination of fire ants according to claim 13, further comprising the step of inserting a seal from upper portion of said pipe to seal gaps between said pipe and said ant mound.
15. The method for extermination of fire ants according to claim 13, further comprising the step of turning on and off said gas flow controller intermittently to generate periodical increase and decrease of gas pressure inside said ant mound.
16. The method for extermination of fire ants according to claim 13, wherein said gas flow controller comprises an electric valve.
17. The method for extermination of fire ants according to claim 16, further comprising the step of controlling open time period or close time period of said electric valve to control temperature of high-pressure gas introduced into said ant mound.
18. The method for extermination of fire ants according to claim 16, further comprising the step of maintaining temperature inside said ant mound at over 60\xb0 C. for a predetermined period of time.
19. The method for extermination of fire ants according to claim 16, further comprising the step of controlling the open and close operations of said electric valve according to readings of a pressure gauge provided in said pipe.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A fender comprising:
a) a top portion having opposed inner and outer edges; and
b) a clearance increasing portion depending downwardly from said inner edge of said top portion, wherein said clearance increasing portion is concave.
2. A fender comprising:
a) a top portion having opposed inner and outer edges; and
b) a clearance increasing portion depending downwardly from said inner edge of said top portion at a first non-zero acute angle, wherein said clearance increasing portion is concave.
3. A fender having a uniform cross-section, the fender comprising:
a) a top portion having opposed inner and outer edges;
b) a clearance increasing portion depending downwardly from said inner edge of said top portion at a first non-zero acute angle in a first plane, and
c) an inner wall depending downwardly from said clearance increasing portion at a second non-zero acute angle in a second plane, wherein said top portion and said inner wall are oriented substantially perpendicularly, and wherein the first and second plane are non-coplanar.
4. A fender having a longitudinal midline and a uniform cross-section, the fender comprising:
a light housing mounted to the fender offset from the midline;
a top portion having opposed inner and outer edges;
a clearance increasing portion depending downwardly from said inner edge of said top portion at a first non-zero acute angle in a first plane, and
an inner wall depending downwardly from said clearance increasing portion at a second non-zero acute angle in a second plane, wherein said top portion and said inner wall are oriented substantially perpendicularly, and wherein the first and second plane are non-coplanar.
5. A fender having a longitudinal midline, said fender comprising:
a) a light housing mounted to said fender offset from said midline,
b) a top portion having opposed inner and outer edges and a bottom edge, wherein said top portion is curved radially downwardly in a longitudinal direction,
c) a clearance increasing portion having a bottom edge, said clearance increasing portion depending downwardly from said inner edge of said top portion at a non-zero acute angle in a first plane,
d) an inner wall having a bottom edge, said inner wall depending downwardly from said clearance increasing portion at a non-zero acute angle in a second plane, wherein said top portion and said inner wall are oriented substantially perpendicularly, wherein the first and second planes are non-coplanar and wherein said angle formed by said top portion and said clearance increasing portion, and the angle formed by said clearance increasing portion and said inner wall add up to approximately 90\xb0, and
e) an outer wall having a bottom edge, said outer wall depending downwardly from said outer edge of said top portion,
wherein said entire bottom edge of said clearance increasing portion, said entire bottom edge of said inner wall, said entire bottom edge of said top portion and said entire bottom edge of said outer wall all lie in a common plane.
6. A fender having a longitudinal midline, and a light housing mounted to said fender offset from said midline, said fender further comprising
a) a top portion having opposed inner and outer edges, wherein said light housing is attached to said top portion,
b) a clearance increasing portion depending downwardly from said inner edge of said top portion at a first non-zero acute angle, wherein said clearance increasing portion is concave, and
c) an inner wall depending downwardly from said clearance increasing portion at a second non-zero acute angle, wherein said top portion and said inner wall are oriented substantially perpendicularly, and wherein said angle formed by said top portion and said clearance increasing portion, and the angle formed by said clearance increasing portion and said inner wall add up to approximately 90\xb0.
7. The fender of claim 6 wherein said fender has an external surface having a shape, and wherein said light housing comprises a base portion that conforms to at least a portion of the shape of the external surface of fender.
8. The fender of claim 7 wherein the light housing further comprises a raised portion adapted to receive a light fixture.
9. The fender of claim 6 further comprising an outer wall extending downwardly from the outer edge of the top portion.
10. The fender of claim 6 wherein the top portion further comprises a substantially flat middle section and two curved end sections.
11. The fender of claim 6 wherein the top portion comprises a plurality of planar sections.
12. A tow dolly comprising the fender of claim 1.
13. A tow dolly comprising a plurality of fenders of claim 1.