1. An inflator for an air-bag, the inflator comprising at least one gas bottle containing pressurised gas, the gas bottle being sealed by a rupturable foil a support member engaging the rupturable foil to maintain the rupturable foil in an un-ruptured state, the support member is mounted in a position and retained in the position by a part of a piston element which directly engages the support member, the piston element being associated with a squib to drive the piston element from an initial position to a release position in which the piston element no longer engages the support member, permitting the support member to move to a position in which the foil will rupture to permit gas to escape from the gas bottle.
2. An inflator according to claim 1 wherein the support member is formed as part of a bracket, in the form of a support arm which extends substantially perpendicularly from a base.
3. An inflator according to claim 1 wherein the support member is yieldable, and is configured to yield in response to the pressure of the gas in the gas bottle exceeding a predetermined threshold, thus enabling the foil to rupture.
4. An inflator according to claim 3 wherein the support member has a line of mechanical weakness such that the line of mechanical weakness will break and the support member will yield when gas pressure in the gas bottle exceeds the predetermined threshold, thus enabling the foil to rupture.
5. An inflator according to claim 1 wherein the at least one gas bottle includes first and second gas bottles, each having a rupturable foil and each foil being associated with a support member.
6. An inflator according to claim 5 wherein the support members associated with the first and second gas bottles form part of a single bracket, the support members being engaged by respective parts of a single piston element.
7. An inflator according to claim 5 wherein the each gas bottle is sealed by a respective one of two parallel spaced-apart planar walls, each wall defining a respective aperture, each aperture being sealed by a respective rupturable foil, the piston being provided in a chamber defined between the two walls.
8. An inflator according to claim 5 wherein the first bottle contains one of a fuel and an oxidisable gas and the second bottle contains an oxidising gas.
9. An inflator according to claim 8 wherein the one of the fuel and the oxidisable gas is selected from the group comprises hydrogen, ethane, methane, propane and butane.
10. An inflator according to claim 9 wherein the oxidisable gas is mixed with at least one inert gas.
11. An inflator according to claim 9 wherein the oxidising gas is selected from the group comprising air, oxygen and nitrous oxide.
12. An inflator according to claim 11 wherein the oxidising gas is mixed with at least one inert gas.
13. An inflator according to claim 5 wherein a flame channel is provided from the squib to the exterior of the inflator to ignite mixed gas from the first and second gas bottles.
14. An inflator according to claim 5 wherein a second squib is provided to ignite mixed gas from the first and second gas bottles.
15. An inflator according to claim 14 wherein the second squib is mounted adjacent the first squib and is provided with a flame-guide.
16. An inflator according to claim 14 wherein the second squib is mounted on the exterior of the inflator.
17. The inflator according to claim 1 in combination with the air-bag.
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 program product for controlling transactional execution in a computing environment, the computer program product comprising:
a computer readable storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising:
initiating, by a processor, a transaction within a computing environment, the transaction effectively delaying committing transactional stores to main memory until completion of a selected transaction, and wherein presentation of interrupts for the transaction is managed by one or more controls, the one or more controls having state associated therewith;
presenting an interrupt for the transaction based on detecting a program event recording (PER) event and the state having a first value, PER being defined as presenting an interrupt based on detecting a PER event, the interrupt causing an address to be saved of a next transaction instruction to be executed; and
suppressing PER event detection for the transaction based on the state having a second value.
2. The computer program product of claim 1, wherein the method further comprises re-executing the transaction based on the interrupt, and wherein the state has the second value indicating suppression of PER event detection, wherein presentation of another interrupt based on another PER event is prevented.
3. The computer program product of claim 1, wherein the one or more controls comprise an event suppression control to specify a suppression of selected PER events, and a transaction end event control to specify that the suppression of selected PER events is until a selected transaction is ended.
4. The computer program product of claim 3, wherein the selected PER events include one or more events of the following events: successful-branching event, instruction-fetch event, storage-alteration event, store-using-real-address event, or zero-address-detection event.
5. The computer program product of claim 4, wherein the following events further include an instruction fetch nullification event, based on the transaction not being an outermost transaction.
6. The computer program product of claim 3, wherein the method further comprises:
based on the event suppression control being set, inhibiting PER events, except the transaction-end event, independent of accessing task structures in which current PER settings are maintained.
7. The computer program product of claim 1, wherein the method further comprises detecting execution of a transaction end for the selected transaction, wherein based on the detecting, the one or more controls are to be reset.
8. The computer program product of claim 7, wherein the selected transaction comprises an outermost transaction.
9. The computer program product of claim 1, wherein the one or more controls are maintained in a control register of the processor.
10. The computer program product of claim 2, wherein the another PER event is a same event as the PER event or a different event than the PER event.
11. A computer system for controlling transactional execution in a computing environment, the computer system comprising:
a memory; and
a processor in communications with the memory, wherein the computer system is configured to perform a method, said method comprising:
initiating, by a processor, a transaction within a computing environment, the transaction effectively delaying committing transactional stores to main memory until completion of a selected transaction, and wherein presentation of interrupts for the transaction is managed by one or more controls, the one or more controls having state associated therewith;
presenting an interrupt for the transaction based on detecting a program event recording (PER) event and the state having a first value, PER being defined as presenting an interrupt based on detecting a PER event, the interrupt causing an address to be saved of a next transaction instruction to be executed; and
suppressing PER event detection for the transaction based on the state having a second value.
12. The computer system of claim 11, wherein the one or more controls comprise an event suppression control to specify a suppression of selected PER events, and a transaction end event control to specify that the suppression of selected PER events is until a selected transaction is ended.
13. The computer system of claim 12, wherein the selected PER events include one or more events of the following events: successful-branching event, instruction-fetch event, storage-alteration event, store-using-real-address event, or zero-address-detection event.
14. The computer system of claim 12, wherein the method further comprises:
based on the event suppression control being set, inhibiting PER events, except the transaction-end event, independent of accessing task structures in which current PER settings are maintained.
15. The computer system of claim 11, wherein the method further comprises detecting execution of a transaction end for the selected transaction, wherein based on the detecting, the one or more controls are to be reset.
16. The computer system of claim 11, wherein the one or more controls are maintained in a control register of the processor.
17. The computer system of claim 11, wherein the method further comprises re-executing the transaction based on the interrupt, and wherein the state has the second value indicating suppression of PER event detection, wherein presentation of another interrupt based on another PER event is prevented, and wherein the another PER event is a same event as the PER event or a different event than the PER event.
18-20. (canceled)