Bolt assembly, method and device for release, and computer system

1 . A bolt assembly comprising:

a shank having a screw thread and

a head of larger cross section than that of the shank,

wherein the screw thread of the shank is adapted to rotatably engage with a complementary screw thread in a nut, characterized in that the bolt assembly includes means adapted in use to disengage the head or the nut without rotation of the nut or the shank, the disengagement means including a material adapted to change form to facilitate disengagement, when activated.

2 . The bolt assembly of claim 1 , wherein the disengagement means is included in the head, the nut or the screw thread of the shank.

3 . The bolt assembly of claim 1 , wherein the material is chosen from the group consisting of a shape memory alloy and heat-activatable epoxy resin.

4 . The bolt assembly of claim 1 , wherein the material is a shape memory alloy and the disengagement means is adapted for use more than once.

5 . The bolt assembly of claim 1 , wherein the material is a heat-activatable epoxy resin and the disengagement means is adapted for single use.

6 . The bolt assembly of claim 1 , wherein the material in the disengagement means is adapted to be activated by wireless command.

7 . The bolt assembly of claim 1 , wherein the head is separate from the shank and the shank is adapted for engagement during assembly.

8 . The bolt assembly of claim 7 , wherein the shank contains a socket.

9 . A method for releasing the bolt assembly of claim 1 when engaged with the nut, the method comprising the step of activating the material to change form sufficiently to enable disengagement of the head or the nut without rotation of the nut or the shank.

10 . The method of claim 9 , wherein activation follows a wireless command, using energy chosen from the group consisting of magnetic, ultrasonic, infra red and radio frequency energy.

11 . A device for release of the bolt assembly of claim 1 when engaged with the nut, the device comprising means for conveying a wireless command for activating the material to change form sufficiently to enable disengagement of the head or the nut without rotation of the nut or the shank.

12 . The device of claim 11 , wherein the wireless command uses energy chosen from the group consisting of magnetic, electromagnetic, ultrasonic, infra red, microwave and radio frequency energy.

13 . The device of claim 11 further comprising operator authorization means.

14 . The device of claim 13 , wherein the operator authorization means is adapted to require biometric identification and/or entry of a code.

15 . The device of claim 11 , wherein the device comprises bolt assembly identification means.

16 . The device of claim 11 , wherein the device is adapted to activate disengagement of a plurality of the bolt assemblies.

17 . The device of claim 16 , wherein the device is adapted to activate disengagement of the plurality of bolt assemblies in a chosen sequence.

18 . A computer system comprising:

means for inquiring as to identification in a target;

means to receive identification data from the target;

a database for comparing the identification data with stored data; and

means for transmitting a command to the target to change status in the target.

19 . A computer system comprising:

means for inquiring as to identification in a target;

means to receive identification data from the target;

a database for comparing the identification data with stored data;

means for inquiring as to status in the target;

means to receive status data from the target;

a database for comparing the status data with stored data; and

means for transmitting a command to the target to change the status.

20 . The computer system of claim 18 further comprising:

means for inquiring as to the identification of a user;

means to receive identification data from the user;

a database for comparing the identification data with stored data; and

means to inactivate further use of the computer system if the identification data is not found in the database.

21 . The computer system of claim 18 further comprising:

means for inquiring as to history of the target;

means to receive the history data; and

means to store the history data.

22 . The computer system of claim 18 , further comprising means limiting use of the computer system according to a predetermined type of user.

23 . The computer system of claim 18 , wherein the computer system includes means for transferring data to a third party.

24 . The computer system of claim 18 , further comprising means for obtaining payment from a third party fund.

25 . The computer system of claim 18 , wherein the identification is a serial number, a communications address or a temporary communications address.

26 . The computer system of claim 18 , wherein the target is the bolt assembly of claim 1 .

27 . The computer system of claim 26 , wherein the command effects activation of the material.

28 . A method comprising the steps of:

inquiring as to identification in a target;

receiving identification data from the target;

comparing the identification data with stored data in a database;

inquiring as to status in the target;

receiving status data from the target;

comparing the status data with stored date in a database; and

authorizing a change in the status.

29 . A method comprising the steps of:

inquiring as to the identification of a user;

receiving identification data from the user;

comparing the identification data with stored data in a database; and

authorizing the steps set out in claim 28 .

30 . The method of claim 28 , further comprising the steps of:

inquiring as to the history of the target;

receiving the history data from the target; and

optionally storing the history data in a database.

31 . The method of claim 28 further comprising the step of transferring data to a third party.

32 . Th