Author: claimsbot

1. A cellular polyisocyanate polyadduct prepared by
(1) reacting (a) one or more diisocyanates with (b) one or more polyether alcohols to form a prepolymer comprising isocyanate groups and an NCO content of less than 10%, and
(2) reacting said prepolymer in a mold with a crosslinking component comprising (e) water and, optionally, (d) one or more sulfated fatty acid esters;
wherein said (b) one or more polyether alcohols comprises a mixture of (b1) and (b3) and optionally (b2), wherein:
(b1) is a polytetrahydrofuran having a molecular weight of from 1800 to 2100 gmol; and
(b2) is a polyether alcohol having a molecular weight of from 500 to 7000 gmol, based on ethylene oxide andor propylene oxide; and
(b3) is a polytetrahydrofuran having a molecular weight of from 800 to 1200 gmol

wherein said cellular polyisocyanate polyadduct has a density, according to DIN EN ISO 845, of from 200 to 800 kgm3; a tensile strength, according to DIN EN ISO 1798, of greater than or equal to 2.0 Nmm2; an elongation at break, according to DIN EN ISO 1798, of greater than or equal to 200%; and a tear propagation resistance, according to DIN ISO 34-1 B (b), of greater than or equal to 8 Nmm.
2. The cellular polyisocyanate polyadduct of claim 1, wherein the weight ratio of (b1) to the sum of (b2) and (b3), wherein the weight of (b2) is optionally 0, is from 11:1 to 2:1.
3. The cellular polyisocyanate polyadduct of claim 1, wherein said (b) one or more polyether alcohols further comprises a polyether alcohol (b2) having a hydroxyl number of less than 500 mg KOHg.
4. The cellular polyisocyanate polyadduct of claim 3, wherein said polyether alcohol (b2) is based on ethylene oxide andor propylene oxide and glycerol andor trimethylolpropane as an initiator.
5. The cellular polyisocyanate polyadduct of claim 1, wherein said mixture comprising (b1) and (b3) has a number average molecular weight of from 1500 gmol to 1900 gmol.
6. The cellular polyisocyanate polyadduct of claim 1, wherein said prepolymer further comprises allophanate groups.
7. The cellular polyisocyanate polyadduct of claim 1, wherein said crosslinking component further comprises catalysts (f) and, optionally, (c) polysiloxanes, (g) blowing agents, andor (h) assistants.
8. The cellular polyisocyanate polyadduct of claim 1, wherein said crosslinking component further comprises tin compounds.
9. The cellular polyisocyanate polyadduct of claim 7, wherein said crosslinking component further comprises amine catalysts.

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 vacuum vessel for a magnetic resonance imaging (MRI) system, the vacuum vessel comprising:
a housing configured to receive therein a magnet assembly; and
an end flange forming an end of the housing, wherein the end flange include an outer surface, an inner surface, and a core coupled between the outer and inner surfaces, the core having a greater stiffness than the outer surface and the inner surface.
2. The vacuum vessel of claim 1, wherein the end flange is generally planar.
3. The vacuum vessel of claim 1, wherein the outer and inner surfaces are formed from a metal material and the core is formed from a composite material.
4. The vacuum vessel of claim 3, wherein the metal material is stainless steel.
5. The vacuum vessel of claim 3, wherein the metal material has a thickness of about two millimeters.
6. The vacuum vessel of claim 1, wherein the outer and inner surfaces are formed from fiberglass.
7. The vacuum vessel of claim 1, wherein the core is formed from a metal in a honeycomb type configuration.
8. The vacuum vessel of claim 7, wherein the metal is aluminum.
9. The vacuum vessel of claim 1, wherein the outer surface comprises a flammability resistant material.
10. The vacuum vessel of claim 1, wherein the outer surface defines an outer housing of the vacuum vessel and not including a cover.
11. The vacuum vessel of claim 1, wherein the outer surface, the inner surface, and the core are coupled together in a sandwiched arrangement and having an overall thickness of about ten millimeters.
12. A magnet system for a magnetic resonance imaging (MRI) device, the magnet system comprising:
a vacuum vessel having at least one end flange formed from a non-solid core having outer and inner surfaces forming planar walls, the non-solid core having a greater stiffness than the outer and inner surfaces;
a cryogen vessel having liquid helium therein, the cryogen vessel within the vacuum vessel; and
a superconducting magnet within the cryogen vessel.
13. The magnet system of claim 12, wherein the outer and inner surfaces are formed from a metal material and the non-solid core is formed from a composite material.
14. The magnet system of claim 13, wherein the metal material is stainless steel and has a thickness of about two millimeters, and the outer surface, the inner surface, and the core are coupled together in a sandwiched arrangement and having an overall thickness of about ten millimeters.
15. The magnet system of claim 12, wherein the outer and inner surfaces are formed from fiberglass.
16. The magnet system of claim 12, wherein the non-solid core is formed from a metal in a honeycomb type configuration.
17. The magnet system of claim 12, wherein the outer surface comprises a flammability resistant material.
18. The magnet system of claim 12, wherein the outer surface defines an outer housing of the vacuum vessel and not including a cover.
19. A method of manufacturing a flange for a vacuum vessel for a magnet resonance imaging (MRI) system, the method comprising:
forming a core, an outer surface and inner surface of a vacuum vessel flange, the core having a greater stiffness than the outer surface and the inner surface; and
coupling together the core with the outer and inner surfaces, the core between the outer and inner surfaces and together defining a generally planar vacuum vessel flange.
20. The method of claim 19, wherein the outer and inner surfaces are formed from a metal material and the core is formed from a composite material, the core coupled together in a sandwiched arrangement with the outer and inner surfaces and having an overall thickness of about ten millimeters.

1. A centralized system for dealing with phenomena of pressure loss and running flat of a vehicle tire, the tire being part of a mounted assembly including a wheel, the system comprising:
a central control unit;
a source of compressed gas configured to deliver compressed gas at a pressure;
a regulator controlled by the central control unit and configured to regulate the pressure of the compressed gas;
a pneumatic connection between the source of compressed gas, the regulator, and an internal cavity of the tire;
at least one active product reservoir, external to the mounted assembly, the active product reservoir being connected between the source of compressed gas and the internal cavity of the tire such that the active product reservoir is in parallel with at least a portion of the pneumatic connection, and the active product reservoir having a cock or valve at an output thereof, the cock or valve being controlled by the central control unit, and said active product being selected from a group consisting of sealing products and lubricating products.
2. The system according to claim 1, in which said system further comprises a means for delivering an adapted additive, said means for delivering an adapted additive being external to the mounted assembly.
3. The system according to claim 2, in which said adapted additive comprises an agent adapted for improving: the conditions of injection of said active product, the action of said active product, and the conditions of dealing with the pressure loss and ultimately running flat of the tire.
4. The device according claim 3, in which said adapted additive comprises a cleaning agent.
5. The device according claim 3, in which said adapted additive comprises an anti-corrosion agent.
6. The system according claim 3, in which said adapted additive comprises a cooling agent.
7. The system according to claim 1, in which said active product comprises a material selected from the group consisting of air, an inert gas, and a non-toxic hydrocarbon, and said active product is not detrimental to the environment and is nonflammable in the compressed state.
8. The system according to claim 1, in which said system comprises a source of cooling product intended to be brought into the internal cavity of the tire in the event of running flat.
9. The system according to claim 1, further comprising:
a means for measuring a representative characteristic of the internal air of the tire and generating at least one representative signal on the state of the air in the internal cavity of the tire,
a means for controlling said system comprising at least a memory, a comparator, and a control program,
wherein said control program is adapted to:
receive and process a pressure signal;
compare said pressure signal with a pressure reference loaded in said memory; and
initiate, according to the result of said comparison, the delivering into the tire of the active product.
10. The system according to claim 9, in which said pressure reference comprises information in terms of a pressure value, a difference in pressure with respect to a reference pressure, and the rate of pressure variation with time.
11. The device according to claim 9, in which the means for measuring said characteristic of the internal air of the tire and generating the pressure signal are affixed to mounted assembly.
12. The system according to claim 9, in which the means for measuring the characteristics of the internal air in the tire and generating the pressure signal, are situated outside the mounted assembly.
13. The device according to claim 9, in which said means for generating the pressure signal incorporates a means for measuring the temperature of the air in the internal cavity of the tire and its change over time.
14. The system according to claim 1, in which said source of compressed gas further comprises a reservoir of a compressed gas which is not detrimental to the environment.
15. The system according to claim 1, in which said source of compressed gas comprises a compressor.
16. The system according to claim 15, in which said compressor is adapted to supply inflation air and cooling air to the tire.
17. The system according to claim 1, further comprising:
a memory and a program in said central control unit, both adapted to manage and implement variable combinations of inflation air, active product and adapted additive.
18. A method for dealing with phenomena of loss of pressure and running flat of a tire on a vehicle, the tire being part of a mounted assembly including a wheel, the method comprising the steps of:
measuring a representative characteristic of the internal air of the tire,
generating a pressure signal based on the state of the inflation air in the internal cavity of the tire,
feeding a compressed gas, from a source of compressed gas configured to deliver compressed gas at a pressure regulated by a regulator, and at least one active product, into the internal cavity of a tire from a reservoir that is external to the mounted assembly, the active product reservoir being connected between the source of compressed gas and the internal cavity of the tire such that the active product reservoir is in parallel with at least a portion of the pneumatic connection, and the active product reservoir having a cock or valve at an output thereof, the cock or valve being controlled by a central control unit, and said active product being selected from a group consisting of sealing products and lubricating products;
controlling said feeding using the central control unit, which has at least a memory, a comparator and a control program, by the steps of:
receiving and processing said pressure signal;
comparing said pressure signal with a pressure reference loaded in said memory; and
controlling said feeding step according to said program.
19. The method according to claim 18, in which said pressure reference comprises information in terms of pressure value, difference in pressure with respect to a reference pressure, and rate of pressure variation.
20. The method according to claim 18, further comprising the step of feeding a predetermined dose of active sealing product into the internal cavity of said tire when the result of said comparison step is abnormal.
21. The method according to claim 20, further comprising the step of said control means transmitting a puncture alarm to a vehicle driver.
22. The method according to claim 20, in which said comparing step is abnormal when the difference between said pressure signal and said reference pressure is greater than a given threshold.
23. The method according to claim 20, in which the result of said comparing step is deemed abnormal when the variation in said pressure signal measured over a given time is greater than a given threshold.
24. The method according to claim 18, further comprising the step of said control means supplying a predetermined dose of active lubricating product into the internal cavity of said tire when said comparing step indicates a condition of flat-running.
25. The method according to claim 24, further comprising the step of said control means transmitting a flat-running alarm to a vehicle driver.
26. The method according to claim 24, in which the control means supplies a flow of cooling gas into the internal cavity of said tire.
27. The method according to claim 24, in which said representative characteristic comprises a temperature of the air in the internal cavity of the tire and further comprising the steps of:
transmitting said temperature to said control means,
comparing in said control means said temperature to a predetermined threshold, and
supplying a dose of lubricant when said temperature exceeds said threshold.
28. The method according to claim 27, further comprising the steps of:
comparing in said control means said temperature to a second predetermined threshold, and
transmitting an alarm requesting immediate stoppage transmitted to the driver of the vehicle when said temperature exceeds said second threshold.

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 fabrication method of a packaging structure of a light-sensing element, comprising the following steps:
providing a substrate, which has at least one metallization trace;
sticking a light-sensing chip onto said substrate with an adhesive layer;
electrically connecting said light-sensing chip to said metallization traces with multiple bond wires in a wire-bonding procedure;
cleaning pollutants on said substrate; and
installing a light transparent cover having a cavity to said substrate with a glue material, with said light-sensing chip contained inside said cavity and enveloped by said light transparent cover, wherein said light transparent cover has at least one via-hole, said at least one-via hole balancing gas pressures inside and outside said light transparent cover when said glue material is being hardened for joining said light transparent cover with said substrate; after said glue material has been hardened, another glue is filled into said via-holes and hardened lest external humidity penetrate into said light transparent cover.
2. The fabrication method of a packaging structure of a light-sensing element according to claim 1, wherein said adhesive layer is a silver paste or an adhesive tape.
3. The fabrication method of a packaging structure of a light-sensing element according to claim 1, wherein said substrate has at least one first engagement portion, and said light transparent cover has second engagement portions at the positions corresponding to said first engagement portions so that said second engagement portions of said light transparent cover can mate with said first engagement portions of said substrate for alignment.
4. The fabrication method of a packaging structure of a light-sensing element according to claim 3, wherein said first engagement portion is a notch, and said second engagement portion is a protrusion; otherwise, said first engagement portion is a protrusion, and said second engagement portion is a notch; both of said notch and said protrusion can mate with each other for alignment.
5. The fabrication method of a packaging structure of a light-sensing element according to claim 1, wherein said metallization traces comprise at least: a power line, a ground line, a clock signal line, and a data output line; the clock signals of said clock signal line are used in a clock signal interface.