1. A pool and deck cleaning brush to clean the bottom wall surface of a pool having a side wall rising upward therefor comprising;
a transverse, elongated mounting bar curved from one end to the other to form a convex distal side and terminating in opposite ends;
elongated discrete bristles arrayed along the bar and mounted from the distal side, the bristles projecting longitudinally from the bar and being of respective lengths sufficient to terminate in respective second ends located in a working plane spaced from the distal side, and constructed so the bristles adjacent the opposite end flare laterally outwardly a selected distance beyond the respective vertical plane of the respective opposite ends to, when predetermined columnar forces are applied thereto, the bristles adjacent the opposite ends will flex and flare further outwardly beyond the selected distance, the bristles constructed of a material selected from a group consisting of plastic and steel; and
a handle affixed to the mounting bar whereby the handle may be grasped to apply the second ends of the bristles to the bottom and apply the predetermined columnar forces to the bristles adjacent the respective ends flare laterally outwardly the selected distance such that, upon one of the ends being brought into close proximity with the side wall engage the side wall to resist shifting the mounting bar toward such side wall.
2. The pool and deck cleaning brush of claim 1 wherein:
the bar is curved to from a sector of a circle; and
the bristles are mounted from the bar to project along the respective extended radii of the circle.
3. The pool and deck cleaning brush of claim 1 wherein;
the bar is curved to form a segment of a circle.
4. The pool and deck cleaning brush of claim 1 wherein:
the bristles in the central part of the bar are 1\xbe inches long or longer.
5. The pool and deck brush of claim 1 wherein:
the bar is at least 20 inches long; and
the bristles are at least 1\xbe inches long.
6. The pool and deck brush of claim 1 wherein:
the handle is elongated and projects substantially perpendicular to the length of the bar.
7. The pool and deck brush of claim 1 wherein:
the bristles are linear and constructed of steel.
8. The pool and deck brush of claim 1 wherein:
the bristles are cylindrical having diameters of between 0.15 mm and 0.30 mm.
9. The pool and deck brush of claim 1 wherein:
the bristles are cylindrical and constructed of plastic; and
have diameters of between 0.40 mm and 0.75 mm.
10. A pool cleaning brush comprising:
a longitudinally extending handle;
a transversely projecting mounting bar forming a sector of a circle to form a distally facing convex side;
a backing strip on the mounting bar;
a plurality of longitudinally projecting, discrete, plastic bristles having a cross section no greater than 0.75 mm, arrayed laterally along the length of the mounting bar and configured with the medially disposed bristles projecting longitudinally and bristles at the opposite ends of the mounting bar projecting longitudinally and laterally outwardly; and
the bristles terminating in respective working ends disposed in a plane projecting parallel to the tangent of the sector.
11. The pool brush of claim 10 wherein:
the mounting bar is at least 20 inches long.
12. The pool brush of claim 10 wherein:
the bristles are constructed to, in the medial section of the bar, have a length of substantially 1\xbe inches and such that the bristles at the opposite ends of the mounting bar have a length of substantially 4 inches.
13. The pool brush of claim 10 wherein:
all the bristles are at least two inches long.
14. The pool brush of claim 10 wherein:
the bristles project radially of the sector of the circle.
15. A pool brush comprising:
a transversely projecting mounting bar constructed of urethane and curving rearwardly at the outer extremities to from a sector of a circle having a radius of substantially 42 inches;
a handle fitting including a backing strip constructed of stainless steel and formed to compliment the sector of the circle, the backing strip being abutted against the back side of the mounting bar, the fitting further including a tubular socket disposed along a diametrical axis of the circle for receipt of a handle rod; and
a high density array of flexible nylon bristles having cross sections no greater than 0.75 mm, connected on their respective one extremities to the front side of the mounting bar and projecting substantially radially of the sector of the circle, the plurality of bristles including at the laterally opposite extremities of the mounting bar end bristles which angle distally and laterally outwardly at respective angles of substantially 45\xb0 to the axis, the plurality of bristles projecting distally to terminate in respective distal ends disposed in a working plane.
16. The pool brush of claim 15 wherein:
selected ones of the bristles are constructed of metal.
17. The pool brush of claim 15 wherein:
the bristles are constructed of nylon.
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 computer system comprising:
an operating system;
a first persistent storage device having a first access time, wherein the operating system is stored on the first persistent storage device;
a second persistent storage device having a second access time shorter than the first access time, wherein a portion of the operating system is selected for storage on the second persistent storage device when one of the computer is being powered down and the computer is entering a hibernation mode;
a non-persistent storage device, wherein the portion of the operating system selected for storage on the second persistent storage device is initialized into the non-persistent storage device while the first persistent storage device is powering up.
2. The computer system of claim 1, wherein the first persistent storage device is a hard drive, the second persistent storage device is a flash memory device, and the non-persistent storage device is system random access memory.
3. The computer system of claim 2, wherein the flash memory has a size sufficient to store the portion of the operating system selected for storage such that a time of loading the portion of the operating system into the non-persistent storage device is approximately equal to the first access time for the first persistent memory device.
4. The computer system of claim 2, wherein the flash memory appears to a computer system as at least one sector of the hard drive.
5. The computer system of claim 4, wherein the operating system detects the presence of the flash memory by observing access times of a portion of the hard drive.
6. The computer system of claim 1, wherein the first persistent storage device is a hard drive and the second persistent storage device is track buffer memory of the hard drive.
7. The computer system of claim 1, wherein the second persistent storage device stores static configuration data and dynamic configuration data when one of the computer is being powered down and the computer is entering a hibernation mode.
8. The computer system of claim 7, wherein the static configuration data is non-user identity specific and the dynamic configuration data is user-specific.
9. The computer system of claim 7, wherein the static configuration data comprises data associated with one of boot strapping code, kernel initialization files, video initialization files, shell and services files.
10. The computer system of claim 9, wherein the services files include dynamic link libraries.
11. The computer system of claim 7, wherein the dynamic configuration data comprises data associated with one of desktop settings, security credentials, internet favorite files, fonts, start-up programs, keyboard settings, and personal information files.
12. The computer system of claim 7, wherein the operating system determines the static configuration data and dynamic configuration data based on a history of prior use.
13. The computer system of claim 1, wherein the second persistent storage device is located within the first persistent storage device.
14. The computer system of claim 1, wherein the second persistent storage device is located in one of a docking station of a laptop, a pc card, and a on a computer motherboard.
15. The computer system of claim 1, wherein the operating system determines if the static configuration data and dynamic configuration data stored in the second persistent storage device is consistent with data stored on the first persistent storage device.
16. The computer system of claim 15, wherein the operating system enters a service mode when the configuration data stored in the second persistent storage device is inconsistent with the data stored in the first persistent storage device.
17. The computer system of claim 15, wherein the operating system boots using only the first persistent memory device when an inconsistency is detected.
18. The computer system of claim 15, wherein the operating system provides an option to bypass the flash memory when the computer system is booting.