All The Claims

1. An ion trap mass spectrometer comprising:
an ion trap to confine ions in a space surrounded by three or more electrodes;
a positive voltage DC power supply;
a negative voltage DC power supply;
a switch on a positive electrode side that turns on and off the positive voltage output from said positive voltage DC power supply;
a switch on a negative electrode side that turns on and off the negative voltage output from said negative voltage DC power supply;
a square-wave voltage generation means for outputting a square-wave voltage to at least one of said electrodes by using the positive and negative voltages supplied through each of said switches on both positive and negative electrode sides when such switches are on, for trapping ions;
a positive electrode side waveform area calculation means for calculating the area of the square-wave voltage on the positive electrode side that is applied to at least one of said electrodes;
a negative electrode side waveform area calculation means for calculating the area of the square-wave voltage on the negative electrode side that is applied to at least one of said electrodes; and
a feedback adjusting means for adjusting the timing of change of at least one of control signals that turn on and off said switches on the positive and negative electrode sides in order to level the areas calculated by said positive electrode side waveform area calculation means and negative electrode side waveform area calculation means.
2. The ion trap mass spectrometer according to claim 1, further comprising:
a peak value feedback adjusting means for adjusting voltages output from said positive and negative voltage DC power supplies by feedback so that peak values of said square-wave voltages on the positive and negative electrode sides become their respective predetermined value.
3. The ion trap mass spectrometer according to claim 1,
wherein said positive electrode side waveform area calculation means and said negative electrode side waveform area calculation means respectively include a rectifying means for separating waveforms only on either positive or negative electrode side from a bipolar square waveform and an integrating means for integrating such separated square waveforms only on either the positive or negative electrode side,
wherein said feedback adjusting means adjusts the timing of change of at least one of control signals that turn on and off said switches on the positive and negative electrode sides so that the difference of output between the two integrating means from the respective waveform area calculation means becomes zero.
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 roofing member having thermal expansion relief capabilities when mounted onto a roof surface in laterally extending courses, comprising:
a main body having side regions, a top surface and a bottom surface, wherein the bottom surface is formed with one or more depressions each positioned proximal to one of the side regions; and
one or more spacer tabs each extending outwardly from at least one of the side regions of the main body adjacent to one depression of the one or more depressions;
wherein a compressive force against a particular one of the spacer tabs of the roofing member caused by thermal expansion of an adjacent roofing member when such roofing members are both mounted in the same course causes failure of the respective main body side region at a location adjacent to the particular spacer tab of the roofing member such that the particular spacer tab is
at least partially displaced into one of the depressions adjacent to the particular spacer tab,
wherein the one or more spacer tabs and the respective adjacent one or more depressions are configured such that failure of the respective main body side region at a location adjacent to the particular spacer tab resulting from the compressive force against the particular spacer tab occurs as a first mode of failure whereby the particular spacer tab cantilevers into the respective depression, and wherein the failure of the respective main body side region at a location adjacent to the particular spacer tab resulting from the compressive force against the particular spacer tab further occurs as a second mode of failure whereby the particular spacer tab fully separates from the main body and is displaced inwardly from the position of the spacer tab at the first mode of failure.
2. The roofing member of claim 1, wherein the one or more spacer tabs and the respective adjacent one or more depressions are configured such that a first compressive force against a particular one of the spacer tabs of the roofing member causes the particular spacer tab to be partially displaced into the respective depression adjacent to the particular spacer tab and a second compressive force against the particular spacer tab causes the particular spacer tab to be fully displaced into the respective depression adjacent to the particular spacer tab.
3. A roofing member, comprising:
a main body having side regions, a top surface and a bottom surface, wherein the bottom surface is formed with a depression feature positioned proximal to at least one of the side regions; and
a spacer tab feature extending outwardly from at least one of the side regions of the main body adjacent to the depression feature;
wherein the spacer tab feature and the depression feature cooperatively provide stress relief through movement of the spacer tab feature at least partially into the depression feature upon a sufficient lateral compressive force being applied to the spacer tab feature inwardly with respect to one of the side regions of the main body, wherein the depression feature is configured to form a first wall thickness between a first portion of the depression feature and the respective main body side region positioned proximally thereto at a first longitudinal end of the spacer tab feature, and a second wall thickness between a second portion of the depression feature and the respective main body side region positioned proximally thereto at a second longitudinal end of the spacer tab feature, enabling the stress relief movement of the spacer tab feature to result from failure of the first wall thickness upon the compressive force being directed inwardly in the transverse direction, and wherein the first longitudinal end of the spacer tab feature presents a sloped intersection edge with the respective main body side region to form an increasing longitudinal dimension for the spacer tab feature moving in the direction of the main body bottom surface.
4. The roofing member of claim 3, wherein the depression feature is configured to fully receive the spacer tab feature upon a second sufficient compressive force being applied to the spacer tab feature inwardly with respect to one of the side regions of the main body.
5. The roofing member of claim 3, wherein the main body has a pair of side regions and the depression feature is positioned proximal to both of the side regions, and wherein the spacer tab feature extends outwardly from both of the side regions.
6. The roofing member of claim 3, wherein each of the side regions form a sidewall, and the spacer tab feature extends outwardly from each of the sidewalls.

1. A method for managing removable computer-readable media transporting across various locations, said method comprising:
storing data on the computer-readable media at an on-site location;
associating each of the computer-readable media with a tracking device, said tracking device having a storage medium;
defining an intent expression for each of the computer-readable media, said defined intent expression including conditions for managing each of the computer-readable media;
storing the defined intent expression for each of the computer-readable media on the storage medium of the tracking device;
wherein said computer-readable media are transported from the on-site location to an offsite location;
obtaining the stored intent expression for each of the computer-readable media on the tracking device at the offsite location; and
managing the computer-readable media based on the obtained intent expression.
2. The method of claim 1, further comprising determining whether the included conditions of the obtained intent expression have been satisfied at the offsite location.
3. The method of claim 2, wherein determining comprises determining whether the included conditions of the obtained intent expression have been satisfied at the offsite location at a predetermined time interval.
4. The method of claim 2, further comprising issuing a notification to a user as a function of the determined condition.
5. The method of claim 2, wherein managing comprises modifying all or a portion of the obtained intent expression as a function of the determining.
6. The method of claim 1, wherein defining the intent expression comprises defining the intent expression to include a condition describing at least one of the following: locations associated with computer-readable media, an expected time of arrival of the computer-readable media, duration of stay at each of the locations, a retention period of the stored data, an expiry action to be performed on the stored data, a duration within which expiry action is to be executed, and a probability value for recalling the computer-readable media.
7. The method of claim 1, further comprising storing an identity, a data description and location information identifying one or more locations as a function of the intent expression for each of the computer-readable media on the tracking device.
8. The method of claim 1, wherein obtaining the stored intent expression comprises obtaining the stored intent expression of each of the computer-readable media on the tracking device at the offsite location.
9. The method of claim 1, wherein one or more computer-readable media have computer-executable instructions for performing the method of claim 1.
10. A computer-readable medium having a data structure stored thereon for managing removable computer-readable medium transporting across various locations, said data structure comprising:
a first data field storing information identifying the removable computer-readable medium;
a second data field storing information describing data stored on the removable computer-readable medium identified in the first data field; and
a third data field defining information identifying an intent expression, said intent expression including a condition for managing the data stored on the removable computer-readable medium across the various locations.
11. The computer-readable media of claim 10, further comprising a fourth data field for storing information identifying one or more locations as a function of the intent expression described in the third data field.
12. The computer-readable medium of claim 10, wherein the third data field storing information includes at least one of the following conditions in the intent expression: an expected time of arrival of the computer-readable media, duration of stay at each of the locations, a retention period of the stored data, an expiry action to be performed on the stored data, a duration within which expiry action is to be executed, and a probability value for recalling the computer-readable media.
13. The computer-readable medium of claim 10, wherein the third data field includes information defining the intent expression in one or more of the following forms: computer-executable instructions and markup-based language format.
14. A system for managing removable computer-readable media transporting across various locations, said system comprising:
a first server configured for storing backup data on a removable computer-readable medium;
a tracking device associated with the removable computer-readable medium, said tracking device having a storage medium having an intent expression stored on the storage medium, said intent expression including conditions for managing the backup data on the removable computer-readable medium;
one or more location data readers for reading the intent expression on the storage medium of the tracking device associated with the removable computer-readable medium as the removable computer-readable medium being transported across various locations;
a second server for processing the read intent expression; and
a user interface for providing an event notification to a user in response to the processed intent expression.
15. The system of claim 14, wherein the second processor is further configured to determine whether the included conditions of the read intent expression have been satisfied at an offsite location.
16. The system of claim 15, wherein the second processor is configured to determine whether the included conditions of the read intent expression have been satisfied at the offsite location at a predetermined time interval.
17. The system of claim 16, wherein the user interface is further configured to issue a notification to the user as a function of the determined condition.
18. The system of claim 14, wherein the tracking device defines the intent expression to include a condition describing at least one of the following: locations associated with computer-readable media, an expected time of arrival of the computer-readable media, duration of stay at each of the locations, a retention period of the stored data, an expiry action to be performed on the stored data, a duration within which expiry action is to be executed, and a probability value for recalling the computer-readable media.
19. The system of claim 14, wherein the storage medium of the tracking device associating with each of the removable computer-readable media includes an identity, a data description and location information identifying one or more locations as a function of the intent expression for each of the computer-readable media associated with the tracking medium.
20. The system of claim 14, wherein the second server is configured to process the read intent expression of the computer-readable medium on the tracking device at the offsite location in a periodic interval.

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 assembly fixture for a workpiece comprising:
a base having an upper surface,
a plurality of blocks, each block having an upper and lower surface,
a clamp associated with and detachably secured to said upper surface of each block,
said lower surface of each block being positioned on said base at positions selected to detachably hold the workpiece to said base at a predetermined position upon movement of each said clamp to a clamping position,
said blocks being fixedly and non-removably secured to said base by welding at said positions,
wherein said top surface of each block, contains indicia identifying its associated clamp, said indicia indicating the type and orientation of its associated clamp.
2. The fixture as defined in claim 1 wherein each said block contains at least one threaded hole and wherein said clamp is attached to its associated block by a threaded fastener which engages said threaded hole.
3. The fixture as defined in claim 2 where said top surface of each block contains indicia identifying the size of said threaded fastener.
4. The fixture as defined in claim 1 wherein said base is planar in shape.