Delivery system for fluid material

• US 6,195,933 B1
• Filed: 02/02/1999
• Issued: 03/06/2001
• Est. Priority Date: 02/02/1999
• Status: Expired due to Fees

• Current Assignee: BASF AG (BASF SE)
• Original Assignee: American Cyanamid Co (Pfizer Inc.)
• Inventors: Woodruff, Keith F.
• Primary Examiner(s): Ark, Darren W.
• Application Number:
  US09/243,281
• Time in Patent Office: 763 Days
• Field of Search: 431/31, 431/21, 431/321, 431/07
• US Class Current: 43/131
• CPC Class Codes: A01M 1/2011 for crawling insects
• CPC Class Codes: A01M 1/2044 Holders or dispensers for liquid insecticide, e.g. using wicks
• CPC Class Codes: A01M 2200/011 Crawling insects

Abstract

A system for delivery of fluid material, and more particularly, a bait station for delivery of fluid insecticide, is formed from a base having at least one feeding station, and a reservoir for storing fluid insecticides beneath the base. The insecticide is transferred by capillary action from the reservoir to the feeding station through at least one connecting tube. At least one hollow member extends upwardly from the base to support a cover removably mounted over the base, and to provide a conduit for refilling the reservoir with fluid. The cover and the base are designed to provide access to insects to the feed station when the cover is mounted over the base.

Claims

1. A bait station comprising:

a base having at least one feeding station, said base comprising a bottom surface and a top surface, said feeding station defined on said top surface of said base,

a reservoir defined between said top surface and said bottom surface of said base, and

means for providing fluid communication between said reservoir and said at least one feeding station on said top surface of said base, said means for providing fluid communication comprising at least one tube for transporting fluid in said reservoir to said at least one feeding station on said base;

said at least one tube having a first end in fluid communication with said at least one feeding station on said base, and a second end in fluid communication with said reservoir, said second end oriented at an angle other than perpendicular relative to a longitudinal plane of said base;

said second end of said at least one tube defining an inlet opening being greater in cross-sectional area than other portions of said tube.

2. The bait station as claimed in claim 1 wherein said at least one tube is adapted to transfer said fluid from said reservoir to said at least one feeding station by capillary action.

3. The bait station as claimed in claim 1 wherein said inlet opening of said at least one tube is substantially elliptical in cross-sectional shape.

4. The bait station as claimed in claim 1 wherein a plurality of said tubes are in fluid communication with said at least one feeding station for transporting fluid from said reservoir to said at least one feeding station.

5. The bait station as claimed in claim 1 wherein a plurality of feeding stations are provided on said top surface of said base.

6. The bait station as claimed in claim 5 wherein said means for providing fluid communication comprises a plurality of tubes in fluid communication between said reservoir and each of said plurality of feeding stations for transporting fluid in said reservoir to said plurality of feeding stations.

7. The bait station as claimed in claim 1 further including at least one member extending from said top surface of said base, said member defining a channel therein having a first end in fluid communication with said reservoir and a second end located above said base such that fluid can be transported into said reservoir through said channel in said member.

8. The bait station as claimed in claim 7 wherein said at least one member provides means for supporting a cover above said base.

9. The bait station as claimed in claim 8 further including a removable cover having an element thereon which is oriented relative to said cover to be received in said second opening in said at least one member for sealing said second opening in said at least one member when said cover is mounted to said base.

10. The bait station as claimed in claim 1 wherein said reservoir defines at least two separate reservoir sections;

wherein said at least one feeding station comprises a plurality of separate feeding stations on said top surface of said base; and

said means for providing fluid communication provides fluid communication between at least one of said two separate sections of said reservoir and a separate one of said plurality of feeding stations provided on said top surface of said base.

11. The bait station as claimed in claim 10 wherein the number of said separate reservoir sections corresponds to the number of said plurality of feeding stations, and said means for providing fluid communication provides fluid communication between each of said separate reservoir sections and a different one of said plurality of feeding stations.

12. The bait station as claimed in claim 10 further including separate means in fluid communication with each of said at least two separate reservoir sections for supplying fluid to one of said separate reservoir sections independent of the other of said separate reservoir sections.

13. The bait station as claimed in claim 1 further including means for controlling the humidity of ambient air proximate to said at least one feeding station for preventing solidification of material in said at least one feeding station.

14. A fluid delivery device comprising:

a base having at least one predetermined opening, said base comprising a bottom surface and a top surface, said at least one predetermined opening defined on said top surface,

a reservoir defined between said top surface and said bottom surface of said base, and

means for providing fluid communication from said reservoir to said at least one predetermined opening on said top surface of said base, said means for providing fluid communication comprising at least one tube for transporting fluid from said reservoir to said at least one predetermined opening on said base;

said at least one tube having a first end in fluid communication with said at least one predetermined opening on said base, and a second end in fluid communication with said reservoir, said second end oriented at an angle other than perpendicular relative to a longitudinal plane of said base;

said second end of said at least one tube defining an inlet opening, said inlet opening being greater in cross-sectional area than other portions of said tube.

15. The device as claimed in claim 14 wherein said at least one tube is adapted to transport said fluid by capillary action.

16. The device as claimed in claim 14 wherein said inlet opening is substantially elliptical in cross-sectional configuration.

17. The device as claimed in claim 14 further including at least one member extending from said top surface of said base, said member defining a channel therein, said channel having a first end thereof defining a first opening in fluid communication with said reservoir and a second end thereof defining a second opening located above said base, wherein material can be transported into said reservoir through said channel in said member.

18. The device as claimed in claim 17 wherein said at least one member provides means for supporting a cover above said base.

19. The device as claimed in claim 17 further including a cover removably mountable over said base, said at least one member providing means for supporting said cover over said base.

20. The device as claimed in claim 19 wherein said cover includes at least one element thereon, said element being oriented relative to said cover to be received in said second opening in said at least one member for sealing said second opening when said cover is mounted over said base.

21. The device as claimed in claim 14 wherein said reservoir defines at least two separate sections and said at least one predetermined opening on said base comprises a plurality of predetermined openings on said base, and said means for providing fluid communication provides fluid communication between each of said separate sections of said reservoir and a different one of said plurality of predetermined openings on said base.

22. The device as claimed in claim 21 further including separate means in fluid communication with said at least two said separate reservoir sections for supplying fluid to one of said separate reservoir sections independent of the other of said separate reservoir sections.

23. The device as claimed in claim 14 further including means for controlling the humidity of ambient air proximate to said at least one predetermined opening on said base for preventing solidification of material in said at least one predetermined opening.

24. A method of delivering insecticide to a predetermined insect feeding station, the steps of said method comprising:

defining at least one insect feeding station at a predetermined location on a top surface of a unitary bait station comprising said top surface and a bottom surface,

providing a reservoir for fluid insecticide positioned below said feeding station;

providing means for coupling said reservoir in fluid communication with said insect feeding station;

transporting said fluid insecticide from said reservoir to said insect feeding station by capillary action; and

controlling the humidity of air proximate to said at least one feeding station for preventing solidification of material in said at least one feeding station.

25. The method as claimed in claim 24 further including the step of providing a plurality of said insect feeding stations, and transporting said fluid insecticide from said reservoir to each of said plurality of insect feeding stations by capillary action.

26. The method as claimed in claim 25 further including the steps of partitioning said reservoir into at least two separate reservoir sections, and transporting said fluid insecticide from each of said separate reservoir sections to a different one of said plurality of insect feeding stations.

27. The method as claimed in claim 26 further including the step of separately supplying fluid to each of said at least two separate reservoir sections independent of each other.

28. The method as claimed in claim 24 further including the step of supplying fluid to said reservoir through conduit means extending through said base.