The United States of America as represented by the Secretary of the Army
대리인 / 주소
MacEvoy, John
인용정보
피인용 횟수 :
7인용 특허 :
8
초록▼
A radar system for vehicle tire testing and analysis may be mounted within the casing of a vehicle tire to measure the location of the inner casing of the tire (tire deformation) as well as the location of the tire/soil interface (tire footprint). The radar system of the present invention may also b
A radar system for vehicle tire testing and analysis may be mounted within the casing of a vehicle tire to measure the location of the inner casing of the tire (tire deformation) as well as the location of the tire/soil interface (tire footprint). The radar system of the present invention may also be used to determine soil characteristics by analyzing the reflected signals. The present invention may have particular use in testing tires for use with on- or off-road surfaces. However, the present invention may also be used to monitor tire deformation, traction, footprint, and soil characteristics.
대표청구항▼
A radar system for vehicle tire testing and analysis may be mounted within the casing of a vehicle tire to measure the location of the inner casing of the tire (tire deformation) as well as the location of the tire/soil interface (tire footprint). The radar system of the present invention may also b
A radar system for vehicle tire testing and analysis may be mounted within the casing of a vehicle tire to measure the location of the inner casing of the tire (tire deformation) as well as the location of the tire/soil interface (tire footprint). The radar system of the present invention may also be used to determine soil characteristics by analyzing the reflected signals. The present invention may have particular use in testing tires for use with on- or off-road surfaces. However, the present invention may also be used to monitor tire deformation, traction, footprint, and soil characteristics. holding field fully encompasses the portion of the chamber where the frozen polarized129Xe accumulates.10. The apparatus of claim 4, wherein said yoke further comprises: a magnet having opposed first and second poles; a first arm having first and second ends and an elongate body portion extending therebetween and a first transverse leg supported by said first end of said body portion; a second arm having first and second ends and an elongate body portion extending therebetween and a first transverse leg supported by said first end of said body portion; said magnet being connected to said second ends of said first and second arms, said first transverse legs of said first and second arms defining an airgap therebetween for receiving a portion of the chamber. 11. The apparatus of claim 10, wherein said first arm further comprises a second transversely-extending leg at said second end thereof, said second leg in magnetic contact with said magnet, and wherein said second arm further comprises a second transversely-extending leg at said second end thereof, said second leg in magnetic contact with said magnet.12. The apparatus of claim 11, wherein said magnet is selected from the group of a permanent magnet and an electromagnet.13. The apparatus of claim 4, wherein said yoke further comprises: a first elongate arm having opposed first and second ends and an elongate body extending therebetween, said body supporting a first transversely-extending leg at a location between said first and second end; a second elongate arm having opposed first and second ends and an elongate body extending therebetween, said body supporting a first transversely-extending leg at a location between said first and second end; a first magnet in magnetic contact with the first ends of said first and second arms; and a second magnet in magnetic contact with the second ends of said first and second arms; wherein the free ends of said first and second legs define an airgap therebetween for receiving a portion of the chamber. 14. The apparatus of claim 13, wherein said first arm further comprises second and third transversely-extending legs at said first and second ends thereof, respectively, said second and third legs in magnetic contact with said first and second magnets, respectively, and wherein said second arm further comprises second and third transversely-extending legs at said first and second ends thereof, respectively, said second and third legs in magnetic contact with said first and second magnets, respectively.15. A method for reducing the relaxation rate of accumulated polarized 129Xe in a chamber comprising the steps of: supporting a magnetic field source on a yoke, wherein said yoke defines an air gap for receiving the chamber and wherein said magnetic field source provides a magnetic field of greater than 2 kiloGauss and having a gradient less than about 10%/cm; and positioning the chamber in said magnetic holding field. 16. The method of claim 15, wherein said yoke further comprises a magnetically permeable yoke body, wherein said yoke body defines a recess into which is positioned a portion of the chamber into which frozen polarized129Xe accumulates, said yoke coupling said magnetic holding field to said recess.17. The method of claim 16, further comprising the steps of thawing the polarized129Xe and recrystallizing the polarized129Xe.18. The method of claim 16, further comprising the step of maintaining the accumulated polarized129Xe in the magnetic field of said positioning step throughout said thawing step.19. The method of claim 16, wherein said positioning step further comprises providing a magnetic holding field having a magnetic field strength between 2 kiloGauss and 14.35 kiloGauss.20. The method of claim 16, wherein said positioning step further comprises providing a magnetic holding field having a magnetic field strength of about 5 kiloGauss.21. The method of claim 16, wherein said positioning step further comprises fully encompassing the portion of the chamber where frozen polarized129Xe accumulates within said magnetic holding field.22. The apparatus of claim 4, wherein said magnetic field source is about 5 kiloGauss.23. The apparatus of claim 4, wherein said yoke defines a air gap for receiving the chamber and wherein said magnetic field source provides a magnetic field having a gradient less than about 10%/cm.24. The apparatus of claim 4, wherein the chamber is defined by a cold finger and wherein said magnetic holding field fully encompasses the portion of the chamber where the frozen polarized129Xe accumulates.
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이 특허에 인용된 특허 (8)
Boyd Patrick L. (Landover Hills MD), Apparatus for testing the traction properties of pneumatic tires.
Shaw David C. H. (3312 E. Mandeville Pl. Orange CA 92667) Shaw Judy Z. Z. (3312 E. Mandeville Pl. Orange CA 92667), Vehicle collision avoidance system.
Holbrook, David S.; Adams, Christopher P.; Gregorich, Brent; Rajani, Umesh; Whitmire, Jason Porter; Bublitz, Scott D.; Hessenberger, Jeffrey C.; Scott, John S.; Huggins, Mark; Mergener, Matthew J., Electromagnetic scanning imager.
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