1. A motorcycle comprising a detachable pannier, wherein
a rear surface of the pannier includes a first inclined surface extending downward from an upper end so as to be inclined rearward, and a second inclined surface extending downward from a lower end of the first inclined surface so as to be inclined rearward at an angle greater than the first inclined surface, and is formed in a V shape opened rearward in a side view by both of the first and second inclined surfaces, whereby
a light distribution requirement that a tail lamp and a turn indicator can be seen from a rear side, is met in a state where the pannier is mounted.
2. The motorcycle as claimed in claim 1, wherein
the pannier is supported by a motorcycle frame structure via a grab rail to be held by a passenger, and
at least a portion of an inner end, in a motorcycle widthwise direction, of the pannier is located inward of the grab rail.
3. The motorcycle as claimed in claim 2, wherein an outer end, in the motorcycle widthwise direction, of the pannier is located inward of an outer end, in the motorcycle widthwise direction, of a rear-view mirror.
4. The motorcycle as claimed in claim 1, wherein a reinforcement portion for preventing deformation is provided at an inside of a base portion of the V shape in the pannier.
5. The motorcycle as claimed in claim 1, wherein an angle \u03b1 of the V shape formed by the first inclined surface and the second inclined surface is set within the range of 130\xb0 to 170\xb0.
6. The motorcycle as claimed in claim 5, wherein a first inclination angle \u03b21 of the first inclined surface relative to a vertical direction is set within the range of 10\xb0 to 30\xb0, and a second inclination angle \u03b22 of the second inclined surface relative to the vertical direction is set within the range of 40\xb0 to 65\xb0.
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. An open MRI system, comprising:
an open MRI magnet system; and
a vibration isolation system supporting the MRI magnet system;
wherein:
the vibration isolation system is secured to a floor and the MRI magnet system is attached over the vibration isolation system; and
the vibration isolation system is configured within a footprint of magnets of the MRI magnet system.
2. The open MRI system of claim 1, wherein:
a spring constant and damping of the vibration isolation system are adjustable;
the vibration isolation system is site tunable; and
the vibration isolation system is tuned to minimize the magnet system Q factor and to control a bandwidth of the MRI magnet system vibration response at a predominant MRI magnet exciting frequencies.
3. The open MRI system of claim 1, wherein the vibration isolation system comprises a plurality of pneumatic isolators.
4. The open MRI system of claim 1, wherein the vibration isolation system comprises a plurality of active vibration control isolators.
5. The open MRI system of claim 1, wherein the vibration isolation system comprises:
a plurality of posts secured to the floor; and
a plurality of vibration isolators mounted on the plurality of posts and supporting the MRI magnet system.
6. The open MRI system of claim 5, further comprising an adjustable balance mass located below the MRI magnet system and between the plurality of posts.
7. The open MRI system of claim 1, further comprising a structural holder positioned between the vibration isolation system and the MRI magnet system.
8. The open MRI system of claim 1, wherein the vibration isolation system is retrofitted to a preexisting MRI magnet system.
9. The open MRI system of claim 1, wherein the open magnet system comprises:
(a) a first assembly comprising:
(1) a longitudinally-extending and generally-vertically-aligned first axis;
(2) at least one superconductive main coil positioned around said first axis and carrying a first main electric current in a first direction; and
(3) a first vacuum enclosure enclosing said at least one superconductive main coil of said first assembly;
(b) a second assembly longitudinally spaced apart from and disposed below said first assembly, comprising:
(1) a longitudinally-extending second axis generally coaxially aligned with said first axis;
(2) at least one superconductive main coil positioned around said second axis and carrying a second main electric current in said first direction; and
(3) a second vacuum enclosure enclosing said at least one superconductive main coil of second assembly; and
(c) at least one support beam external to said first and second vacuum enclosures having a first end attached to said first assembly and having a second end attached to said second assembly.
10. An open MRI system, comprising:
an open MRI magnet system;
a vibration isolation system supporting the MRI magnet system; and
a balance mass located below the MRI magnet system.
11. The open MRI system of claim 10, wherein:
a spring constant and damping of the vibration isolation system are adjustable;
the vibration isolation system is site tunable; and
the vibration isolation system is tuned to minimize the magnet system Q factor and to control a bandwidth of the MRI magnet system vibration response at a predominant MRI magnet exciting frequencies.
12. The open MRI system of claim 10, wherein the vibration isolation system comprises a plurality of pneumatic isolators.
13. The open MRI system of claim 10, wherein the vibration isolation system comprises a plurality of active vibration control isolators.
14. The open MRI system of claim 10, wherein the balance mass is adjustable.
15. The open MRI system of claim 10, wherein:
the vibration isolation system is secured to a floor and the MRI magnet system is attached over the vibration isolation system; and
the vibration isolation system is configured within a footprint of the MRI magnet system.
16. The open MRI system of claim 15, wherein the vibration isolation system comprises:
a plurality of posts secured to the floor, such that the balance mass is located between the plurality of posts; and
a plurality of vibration isolators mounted on the plurality of posts and supporting the MRI magnet system.
17. The open MRI system of claim 10, wherein the vibration isolation system is retrofitted to a preexisting MRI magnet system.
18. The open MRI system of claim 10, wherein the open MRI magnet system comprises:
(a) a first assembly comprising:
(1) a longitudinally-extending and generally-vertically-aligned first axis;
(2) at least one superconductive main coil positioned around said first axis and carrying a first main electric current in a first direction; and
(3) a first vacuum enclosure enclosing said at least one superconductive main coil of said first assembly;
(b) a second assembly longitudinally spaced apart from and disposed below said first assembly, comprising:
(1) a longitudinally-extending second axis generally coaxially aligned with said first axis;
(2) at least one superconductive main coil positioned around said second axis and carrying a second main electric current in said first direction; and
(3) a second vacuum enclosure enclosing said at least one superconductive main coil of second assembly; and
(c) at least one support beam external to said first and second vacuum enclosures having a first end attached to said first assembly and having a second end attached to said second assembly.
19. An open MRI system, comprising:
an open MRI magnet system;
a vibration isolation system supporting the MRI magnet system; and
a balance mass located below the MRI magnet system;
wherein:
the vibration isolation system is secured to a floor and the MRI magnet system is attached over the vibration isolation system; and
the vibration isolation system is configured within a footprint of the MRI magnet system.
20. The open MRI system of claim 19, wherein:
the balance mass is adjustable; and
the vibration isolation system comprises:
a plurality of posts secured to the floor, such that the balance mass is located between the plurality of posts; and
a plurality of vibration isolators mounted on the plurality of posts and supporting the MRI magnet system.
21. An open MRI system, comprising:
an open superconductive MRI magnet system; and
a vibration isolation system supporting the MRI magnet system;
wherein:
a spring constant and damping of the vibration isolation system are adjustable;
the vibration isolation system is site tunable; and
the vibration isolation system is tuned to minimize the magnet system Q factor and to control a bandwidth of the MRI magnet system vibration response at a predominant MRI magnet exciting frequencies.
22. An open MRI system, comprising:
an open superconductive MRI magnet system; and
a vibration isolation system supporting the MRI magnet system;
wherein the vibration isolation system comprises a plurality of active vibration control isolators.
23. The open MRI system of claim 21, further comprising:
a structural holder positioned between the vibration isolation system and the MRI magnet system.
24. The open MRI system of claim 23, wherein the vibration isolation system comprises a plurality of pneumatic isolators.
25. The open MRI system of claim 23, wherein the vibration isolation system comprises:
a plurality of posts secured to the floor; and
a plurality of vibration isolators mounted on the plurality of posts and supporting the MRI magnet system.
26. The open MRI system of claim 25, further comprising an adjustable balance mass located below the MRI magnet system and between the plurality of posts.
27. The open MRI system of claim 23, wherein the vibration isolation system is retrofitted to a preexisting MRI magnet system.
28. The open MRI system of claim 23, wherein the open magnet system comprises:
(a) a first assembly comprising:
(1) a longitudinally-extending and generally-vertically-aligned first axis;
(2) at least one superconductive main coil positioned around said first axis and carrying a first main electric current in a first direction; and
(3) a first vacuum enclosure enclosing said at least one superconductive main coil of said first assembly;
(b) a second assembly longitudinally spaced apart from and disposed below said first assembly, comprising:
(1) a longitudinally-extending second axis generally coaxially aligned with said first axis;
(2) at least one superconductive main coil positioned around said second axis and carrying a second main electric current in said first direction; and
(3) a second vacuum enclosure enclosing said at least one superconductive main coil of second assembly;
(c) at least one support beam external to said first and second vacuum enclosures having a first end attached to said first assembly and having a second end attached to said second assembly.
29. The open MRI system of claim 23, wherein:
the vibration isolation system is secured to a floor and the MRI magnet system is attached over the vibration isolation system; and
the vibration isolation system is configured within a footprint of the MRI magnet system.
30. The open MRI system of claim 23, wherein the vibration isolation system comprises a material which is capable of isolating vibration from the environment.
31. The open MRI system of claim 30, wherein the vibration isolation system comprises a rubber mat or rubber blocks placed between the magnet system and a floor.
32. The open MRI system of claim 23, wherein the magnet system is arranged in a clam-shell configuration.