1. A system for implementing a navigation device, comprising:
a display coupled to said navigation device, said display being configured to display map data;
a map manager that coordinates a map update procedure to periodically realign said map data on said display according to device orientation data; and
a processor coupled to said navigation device to control said map manager.
2. The system of claim 1 wherein said navigation device is implemented as one of either a computer device, a mobile personal digital assistant device, an vehicle navigation device, or a consumer electronics device.
3. The system of claim 1 wherein said map manager periodically realigns said map data on said display to correspond with a current direction of travel for said navigation device.
4. The system of claim 1 wherein said map manager derives said device orientation data from device location data generated by a device location sensor of said navigation device.
5. The system of claim 4 wherein said location sensor includes a Global Positioning System receiver that generates said device location data including a longitude, a latitude, and an altitude of said navigation device.
6. The system of claim 4 wherein said map manager derives a current device orientation for said navigation device by extrapolating a current direction of travel from two most-recent sets of said device location data.
7. The system of claim 1 wherein said map manager accesses said device orientation data from a device orientation sensor of said navigation device.
8. The system of claim 7 wherein said device orientation sensor includes a magnetic compass device that generates said device orientation data including compass degree parameters within a standard range of zero to three-hundred sixty degrees, comprising North, South, East, and West quadrants.
9. The system of claim 7 wherein said device orientation sensor includes an inertial orientation sensor in which a starting point, all accelerations, and all changes of direction are detected to determine said device orientation data for said navigation device.
10. The system of claim 1 wherein said map manager performs said map update procedure based upon device location data generated by a device location sensor of said navigation device, and also based upon said device orientation data from a device orientation sensor of said navigation device.
11. The system of claim 10 wherein said map manager utilizes said device location data from said device location sensor as a primary means of performing said map update procedure, said map manager utilizing said device orientation data from said device orientation sensor as a secondary means of performing said map update procedure only when said device location data remains unaltered for more than a user-selectable duration.
12. The system of claim 10 wherein said map manager concurrently utilizes both said device location data from said device location sensor, and also said device orientation data from said device orientation sensor to perform said map update procedure, said map manager combining said device location data and said device orientation data according to one or more user-selectable combination techniques that alternately include a weighted combination ratio, a non-weighted combination ratio, and a time-sharing combination technique.
13. The system of claim 8 wherein said map manager accesses a magnetic-Northtrue-North conversion table to convert initial device orientation values from said magnetic compass device into said device orientation data.
14. The system of claim 1 wherein said map manager realigns said map data on said display to be aligned with an orientation vector that is calculated by said map manager based upon said device orientation data to indicate a direction of travel for said navigation device.
15. The system of claim 14 wherein a vector tilt value for said orientation vector with respect to said navigation device is selectively chosen and stored by a device user, said vector tilt value alternately being automatically controlled by gravitational sensors coupled to said navigation device to maintain said orientation vector in a substantially horizontal position.
16. The system of claim 14 wherein a vector rotation value for said orientation vector with respect to said navigation device is selectively chosen and stored by a device user to facilitate viewing said map data from an offset viewing position.
17. The system of claim 1 wherein said map manager includes a refresh module that a device user utilizes to specify a refresh rate for performing said map update procedure to periodically realign said map data on said display.
18. The system of claim 1 wherein said map manager performs said map update procedure to realign said map data on said display only when changes in said device orientation data are greater than a user-selectable number of rotational degrees.
19. The system of claim 1 wherein said map manager performs said map update procedure in a manual mode during which a device user manually provides map orientation coordinates for realigning said map data on said display.
20. The system of claim 1 wherein said navigation device includes a wireless communications module for accessing a computer device on a distributed computer network to download at least one of either additional map data, software instructions, or ancillary data for facilitating said map update procedure.
21. A method for implementing a navigation device, comprising:
displaying map data by utilizing a display that is coupled to said navigation device;
coordinating a map update procedure with a map manager to periodically realign said map data on said display according to device orientation data; and
utilizing a processor coupled to said navigation device to control said map manager.
22. The method of claim 21 wherein said navigation device is implemented as one of either a computer device, a mobile personal digital assistant device, an vehicle navigation device, or a consumer electronics device.
23. The method of claim 21 wherein said map manager periodically realigns said map data on said display to correspond with a current direction of travel for said navigation device, said map data including way points that provide a rudimentary view of at least one course of travel.
24. The method of claim 21 wherein said map manager derives said device orientation data from device location data generated by a device location sensor of said navigation device.
25. The method of claim 24 wherein said location sensor includes a Global Positioning System receiver that generates said device location data including a longitude, a latitude, and an altitude of said navigation device.
26. The method of claim 24 wherein said map manager derives a current device orientation for said navigation device by extrapolating a current direction of travel from two most-recent sets of said device location data.
27. The method of claim 21 wherein said map manager accesses said device orientation data from a device orientation sensor of said navigation device.
28. The method of claim 27 wherein said device orientation sensor includes a magnetic compass device that generates said device orientation data including compass degree parameters within a standard range of zero to three-hundred sixty degrees, comprising North, South, East, and West quadrants.
29. The method of claim 27 wherein said device orientation sensor includes an inertial orientation sensor in which a starting point, all accelerations, and all changes of direction are detected to determine said device orientation data for said navigation device.
30. The method of claim 21 wherein said map manager performs said map update procedure based upon device location data generated by a device location sensor of said navigation device, and also based upon said device orientation data from a device orientation sensor of said navigation device.
31. The method of claim 30 wherein said map manager utilizes said device location data from said device location sensor as a primary means of performing said map update procedure, said map manager utilizing said device orientation data from said device orientation sensor as a secondary means of performing said map update procedure only when said device location data remains unaltered for more than a user-selectable duration.
32. The method of claim 30 wherein said map manager concurrently utilizes both said device location data from said device location sensor, and also said device orientation data from said device orientation sensor to perform said map update procedure, said map manager combining said device location data and said device orientation data according to one or more user-selectable combination techniques that alternately include a weighted combination ratio, a non-weighted combination ratio, and a time-sharing combination technique.
33. The method of claim 28 wherein said map manager accesses a magnetic-Northtrue-North conversion table to convert initial device orientation values from said magnetic compass device into said device orientation data.
34. The method of claim 21 wherein said map manager realigns said map data on said display to be aligned with an orientation vector that is calculated by said map manager based upon said device orientation data to indicate a direction of travel for said navigation device.
35. The method of claim 34 wherein a vector tilt value for said orientation vector with respect to said navigation device is selectively chosen and stored by a device user, said vector tilt value alternately being automatically controlled by gravitational sensors coupled to said navigation device to maintain said orientation vector in a substantially horizontal position.
36. The method of claim 34 wherein a vector rotation value for said orientation vector with respect to said navigation device is selectively chosen and stored by a device user to facilitate viewing said map data from an offset viewing position.
37. The method of claim 21 wherein said map manager includes a refresh module that a device user utilizes to specify a refresh rate for performing said map update procedure to periodically realign said map data on said display.
38. The method of claim 21 wherein said map manager performs said map update procedure to realign said map data on said display only when changes in said device orientation data are greater than a user-selectable number of rotational degrees.
39. The method of claim 21 wherein said map manager performs said map update procedure in a manual mode during which a device user manually provides map orientation coordinates for realigning said map data on said display.
40. The method of claim 21 wherein said navigation device includes a wireless communications module for accessing a computer device on a distributed computer network to download at least one of either additional map data, software instructions, or ancillary data for facilitating said map update procedure.
41. A navigation device, comprising:
a display that is configured to display map data;
a map manager that coordinates a map update procedure to periodically realign said map data on said display according to device orientation data; and
a processor that controls said map manager.
42. The navigation device of claim 41 wherein said navigation device is implemented as a portable electronic device.
43. The navigation device of claim 42 wherein said navigation device includes a wireless communications module for accessing one or more devices on a distributed computer network to download at least one of either additional map data, software instructions, or ancillary data for facilitating said map update procedure.
44. The navigation device of claim 42 wherein said navigation device wirelessly connects to a laptop computer to download ancillary data for facilitating said map update procedure.
45. The navigation device of claim 44 wherein said ancillary data includes time information and date information that are updated by utilizing an IEEE 802 protocol.
46. The navigation device of claim 42 wherein said navigation device wirelessly connects to a satellite feed to download ancillary map data for performing said map update procedure.
47. The navigation device of claim 41 wherein said map manager periodically realigns said map data on said display to correspond with a current direction of travel for said navigation device.
48. The navigation device of claim 41 wherein said map manager derives said device orientation data from device location data generated by a device location sensor of said navigation device.
49. The navigation device of claim 41 wherein said map manager accesses said device orientation data from a device orientation sensor of said navigation device.
50. The navigation device of claim 41 wherein said map manager performs said map update procedure based upon device location data generated by a device location sensor of said navigation device, and also based upon said device orientation data from a device orientation sensor of said navigation device.
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 hub-bearing assembly for rotatably mounting a wheel to a vehicle, the assembly having an axis of rotation and comprising:
a radially outer, stationary bearing ring;
a radially inner bearing ring, rotatable about the axis of rotation and providing a flange extending in a radially outer direction for mounting a wheel;
a plurality of rolling elements interposed between the outer and inner rings; and
a sealing device, mounted to the radially outer, stationary bearing ring and having a plurality of elastomeric sealing lips extending towards the radially inner bearing ring,
wherein the flange forms an annular relief projecting in an axially inner direction, the annular relief having a radially outer surface facing away from the axis of rotation, a radially inner surface facing towards the axis of rotation, and an end surface connecting the radially outer surface with the radially inner surface, the radially outer surface having a toroidal
shape that terminates at the end surface, wherein the entire radially outer surfaces has the toroidal shape, and
wherein at least one of the elastomeric sealing lips of the sealing device is a non-contacting axial lip that extends axially towards the flange and provides a free end portion which forms a labyrinth seal with the radially outer surface of the annular relief without contacting the annular relief.
2. The hub-bearing assembly according to claim 1, wherein the free end portion includes a surface that faces the radially outer surface of the annular relief.
3. The hub-bearing assembly according to claim 2, wherein the radially inner bearing ring forms a raceway adjacent to a base portion of the flange having a first toroidal surface portion and a first radial surface portion adjoined to the first toroidal surface portion,
wherein the sealing device provides only a single elastomeric sealing contacting lip in contact with the radially inner bearing ring, wherein the single elastomeric sealing contacting lip slidingly contacts the first toroidal surface portion or the first radial surface portion, and
wherein the first toroidal surface portion and the first radial surface portion are ground.
4. The hub-bearing assembly according to claim 3, wherein the flange has a second radial surface portion formed on an axially inner side of the flange at a radially outer position with respect to the annular relief.
5. The hub-bearing assembly according to claim 4, wherein the flange has a third radial surface portion formed on an axially inner side of the flange at a radially outer position with respect both to the annular relief and to the second radial surface portion, the second radial surface portion adjoining the third radial surface portion by means of a second toroidal surface.
6. The hub-bearing assembly according to claim 5, wherein the free end portion of the non-contacting axial lip forms, with the second radial surface portion and with the annular relief, a sinuous annular gap which forms the labyrinth seal.
7. The hub-bearing assembly according to claim 6, wherein the annular relief protrudes in an axially inner direction beyond the free end portion of the non-contacting axial lip.
8. The hub-bearing assembly according to claim 4, wherein the toroidal shape of the radially outer surface extends from the second radial surface portion to the end surface of the annular relief.
9. The hub-bearing assembly according to claim 3, wherein the single elastomeric sealing contacting lip contacts the first radial surface portion at a location between the radially inner surface of the annular relief and the first toroidal surface portion.
10. The hub-bearing assembly according to claim 3, wherein the radially inner bearing ring further includes a cylindrical surface adjoined to the first toroidal surface portion, and wherein the sealing device further includes a radial lip extending towards the cylindrical surface without contacting the cylindrical surface.
11. The hub-bearing assembly according to claim 3, wherein the radially inner surface of the annular relief has a toroidal shape that extends from the first radial surface portion to the end surface of the annular relief.
12. The hub-bearing assembly according to claim 1, wherein the radially inner surface of the annular relief has a toroidal shape that terminates at the end surface.
13. The hub-bearing assembly according to claim 12, wherein the entire radially inner surface has a toroidal shape.
14. The hub-bearing assembly according to claim 1, wherein plurality of elastomeric sealing lips includes only one sealing lip that contacts the radially inner bearing ring.
15. The hub-bearing assembly according to claim 14, wherein the annular relief is positioned between the non-contacting axial lip and the one sealing lip that contacts the radially inner bearing ring.
16. The hub-bearing assembly according to claim 15, wherein the radially inner surface of the annular relief faces toward the one sealing lip that contacts the radially inner bearing ring.