1. A hydration system, comprising:
a flexible reservoir for storing a liquid;
a first closable opening in the flexible reservoir for filling or emptying the reservoir;
a second opening in the reservoir;
a drinking tube connected to the second opening,
a drinking valve positioned toward the end of the drinking tube, the valve adapted to be opened by a user’s mouth for drinking from the tube; and
a third closeable opening in the reservoir, the third opening being openable to allow gas to exit the reservoir and being closeable to prevent liquid from leaving the reservoir after the gas is removed.
2. The hydration system of claim 1 in which the third closeable opening includes a gas release valve that can open and close the third opening.
3. The hydration system of claim 2 in which the gas release valve is a gate valve, a plug valve, a globe valve, a ball valve, or a butterfly valve.
4. The hydration system of claim 2 in which the gas release valve is a push button valve.
5. The hydration system of claim 1 in which the first closeable opening includes a threaded cap for closing the opening.
6. The hydration system of claim 1 in which the first closeable opening includes a non-threaded cap for closing the opening.
7. The hydration system of claim 1 in which the third closeable opening includes a threaded portion and a threaded cap for securing onto the threaded portion.
8. The hydration system of claim 1 in which the third closeable opening includes cap that locks in place without threads.
9. The hydration system of claim 1 in which the first closeable opening includes a filler cap and in which the third closeable opening is positioned on the filler cap.
10. The hydration system of claim 1 in which the third closeable includes a valve of the normally closed type, the valve being openable by the user to allow gas to escape from the reservoir.
11. A method of filling a hydration system, the hydration system including a flexible reservoir, a first closeable opening for filing the reservoir, and a drinking tube extending from a second opening;
opening the first closeable opening;
filling the hydration system through the first fillable opening;
closing the first closeable opening;
opening a third closeable opening, the third closeable opening being different from the first closeable opening and not part of the drinking tube;
removing air from the reservoir through the third closeable opening;
closing the third closeable opening.
12. The method of claim 11 in which opening a third closeable opening includes opening a valve associated with the third closeable opening and in which closing the third closeable opening includes closing the valve.
13. The method of claim 11 in which opening a third closeable opening includes removing a cap that is not attached using threads.
14. The method of claim 12 in which opening a third closeable opening including opening a gate valve, a plug valve, a globe valve, a ball valve, or a butterfly valve.
15. The method of claim 11 in which opening a third closeable opening includes removing a screw cap valve associated with the third closeable opening and in which closing the third closeable opening includes replacing the screw cap.
16. The method of claim 12 in which opening a third closeable opening including opening a push button valve.
17. The method of claim 11 in which removing air from the reservoir through the third closeable opening including pressing the flexible reservoir to force air out of the third closeable opening.
18. A filler cap for a hydration system having a flexible reservoir, the filler cap allowing the reservoir to be filled with a liquid or emptied, comprising:
a filler cap body fitted to an opening in the reservoir; and
a closeable opening on the filler cap body, the closeable opening being openable by a user to release air from the reservoir and closeable to prevent liquid from escaping the reservoir.
19. The filler cap of claim 18 in which the closeable opening includes a valve.
20. The filler cap of claim 19 in which the valve is of the normally closed type, the valve being openable by the user to allow air to escape the reservoir.
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 printing device, comprising:
at least one paper tray, operable to hold paper used in the printing device;
an intake operable to take paper from the paper tray;
a printing paper path, wherein the printing paper path is operable to move the paper such that it is printed upon by a print engine;
a scanning paper path, wherein the scanning paper path is operable to move the paper such that it is scanned by a scanning engine;
a memory operable to store a scanned image resulting from scanning the paper by the scanning engine; and
a controller operable to associate the scanned image with the paper tray.
2. The printing device of claim 1, wherein the intake automatically takes paper from the tray upon removal and reinsertion of the paper tray into the printing device.
3. The printing device of claim 2, wherein a user override is operable to stop the scanning process.
4. The printing device of claim 1, wherein the controller automatically associates the paper with the paper tray from which the scanned paper came.
5. A method for acquiring information about paper in a printing device, the method comprising:
receiving a piece of paper from a paper tray;
sending the piece of paper through a scanning paper path;
scanning the piece of paper with a scanning engine to produce a scanned image; and
associating the scanned image with the paper tray.
6. The method of claim 5 wherein the paper is received automatically by an intake when the printing device senses removal and reinsertion of a paper tray.
7. The method of claim 6 wherein the user can override the automatic intake.