Device for monitoring maintenance and adjustment of pressure in a tyre

• US 20050126273A1
• Filed: 12/05/2002
• Published: 06/16/2005
• Est. Priority Date: 12/11/2001
• Status: Active Grant

• Current Assignee: Sithold SRO
• Original Assignee: Frantisek Hrabal
• Inventors: Hrabal, Frantisek
• Granted Patent: US 7,117,731 B2
• Time in Patent Office: Days
• US Class Current: 73/146
• CPC Class Codes: B60C 23/123 Elongate peristaltic pumps
• CPC Class Codes: B60C 23/135 activated due to tyre deformation

Abstract

Device for monitoring, maintenance and/or adjustment of pressure in a tire. The device consisting of the chamber (1) with shape memory deformable for the period of application of external mechanical forces when the tire rolls on the road surface, connected valve (3) with the inside space (6) of the tire (2) and valve (4) with the outside environment (5) according to the invention is based on the principle, that at least one wall of the chamber (1) is adjacent to the inside wall of the tire (2) or is a part of the inside wall of the tire (2). Further device operating on the peristaltic pump principle consisting of the chamber, which is deformable up to the zero cross section according to the invention is based on the principle, that at least one chamber (1) with block (10) with shape memory is freely open at one end and equipped with at least one valve at the other end or next to it. The minimum volume of the part of the chamber (1) at the end equipped with the internal valve (3) or external valve (4) is from 1 to 80% of the total maximum volume of the chamber (1).

Claims

1. A device for monitoring, maintenance and/or adjustment of pressure in a tire, comprising:

a chamber with shape memory deformable for a period of application of external mechanical forces when the tire rolls on a road surface, connected at least by one internal one-way valve with the inside space of the tire and at least one external one-way valve with the outside environment, wherein at least one wall of the chamber is adjacent to the inside wall of the tire.

3. The device according to claim 1, wherein a length of the chamber is longer than the optimum contact area of the tire with the road surface.

4. The device according to claim 1, wherein chamber further comprises at least two separated and mutually connected partial spaces, arranged symmetrically at the opposite sides of the tire.

10. The devices according to claim 1, further comprising at least one first sensor chosen from the group consisting of a tire pressure sensor, tire profile sensor, chamber profile sensor, chamber volume sensor, a sensor reading the difference between of the pressure inside the chamber and the pressure in the inside space of the tire, or a sensor reading the difference of pressures inside the chamber and outside environment.

11. The devices according to claim 1, further comprising at least one second sensor chosen from the group of tire rotation speed sensor and tire rotation acceleration sensor.

12. The devices according to claim 1, wherein an internal valve and/or the external valve is connected to a control connected with to first sensor and/or the second sensor.

2. The device for monitoring, maintenance and/or adjustment of pressure in a tire, comprising:

a chamber with shape memory deformable for a period of application of external mechanical forces when the tire rolls on a road surface, connected at least by one internal one-way valve with the inside space of the tire and at least one external one-way valve with the outside environment, wherein at least one wall of the chamber is a part of an inside wall of the tire.

5. The device for monitoring, maintenance and/or adjustment of pressure in a tire, comprising:

a chamber with shape memory deformable for a period of application of external mechanical forces when the tire rolls on a road surface, of lengthwise shape at least partly copying the shape of the tire, connected with the inside space of the tire and with the outside environment, at least one wall of which is adjacent to the tire wall or is a part of it, while a part of the chamber is deformable up to the zero cross section, wherein at least one chamber with the block with shape memory is freely open at one end and comprised of at least one valve at the other end or next to it, while the part of the chamber with the block is deformable up to the zero cross section of the chamber.

6. The device according to claim 5, wherein said chamber is comprised of at least one internal valve connecting the chamber with the inside space of the tire.

7. The device according to claim 5, wherein said chamber is comprised of at least one external valve connecting the chamber with the outside environment.

8. The device according to claim 6, wherein a minimum volume of the part of the chamber at the end comprised of the internal valve or the external valve is from 1 to 80% of the total maximum volume of the inside space of the chamber.

9. The device according to claim 5, wherein a part of the chamber at the end comprised of the internal valve or the external valve is located outside the place of application of the external forces deforming the chamber up to zero cross section.