SEMI-HOLLOW PNEUMATIC WITH IMPROVED PROFILE AND ROLLING MEMBER EQUIPPED WITH SAID PNEUMATIC

• US 20140124112A1
• Filed: 11/06/2013
• Published: 05/08/2014
• Est. Priority Date: 11/07/2012
• Status: Active Grant

• Current Assignee: Otico
• Original Assignee: Otico
• Inventors: Phely, Olivier, Piou, Denis
• Granted Patent: US 10,207,543 B2
• Time in Patent Office: Days
• US Class Current: 152/450
• CPC Class Codes: A01B 29/043 Tire-packers
• CPC Class Codes: A01C 5/068 Furrow packing devices, e.g. press wheels
• CPC Class Codes: B60C 11/0311 Patterns comprising tread lugs arranged parallel or oblique to the axis of rotation
• CPC Class Codes: B60C 13/003 characterised by sidewall curvature
• CPC Class Codes: B60C 13/02 Arrangement of grooves or ribs
• CPC Class Codes: B60C 17/009 comprising annular protrusions projecting into the tyre cavity
• CPC Class Codes: B60C 2200/08 for agricultural vehicles
• CPC Class Codes: B60C 3/00 Tyres characterised by the transverse section
• CPC Class Codes: B60C 3/02 Closed, e.g. toroidal, tyres
• CPC Class Codes: B60C 5/12 without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim B60C5/20 takes precedence
• CPC Class Codes: B60C 7/143 having a lateral extension disposed in a plane parallel to the wheel axis
• CPC Class Codes: B60C 7/24 characterised by means for securing tyres on rim or wheel body
• CPC Class Codes: Y10T 152/10495 Pneumatic tire or inner tube

Abstract

Pneumatic tire 1 for an agricultural machine, having an axis of revolution XX and comprising a tread 7, a sole 11 situated opposite the tread 7, and two sidewalls 13, 15 connecting the tread 7 to the sole 11. The tread 7, the sole 11 and the two sidewalls 13, 15 together form a casing 17 defining a chamber 19 inside the pneumatic tire 1. At least one of the sidewalls 13, 15 comprises, in this order and in succession in a direction oriented radially from the axis of revolution XX to the outside, a proximal portion 131, an intermediate portion 133 and a distal portion 135. In the unloaded state, the intermediate portion 133 projects into the chamber 19 in a direction substantially parallel to the axis of revolution XX.

Claims

1. A tire for an agricultural machine, having an axis of revolution and comprising a tread, a sole situated opposite the tread, and two sidewalls connecting the tread to the sole, the tread, the sole and the two sidewalls together forming a casing defining a chamber inside the tire,

wherein

at least one of the sidewalls comprises, in this order and in succession in a direction oriented radially from the axis of revolution to the outside, a proximal portion, an intermediate portion and a distal portion,

the intermediate portion projecting into the chamber in a direction substantially parallel to the axis of revolution in the unloaded state.

2. The tire as claimed in claim 1, wherein the intermediate portion and the distal portion are of substantially identical and homogeneous thickness.

3. The tire as claimed in claim 1, wherein said sidewall has, in cross-section according to a plane including the axis of revolution of the tire in the unloaded state, an S-shaped profile.

4. The tire as claimed in claim 1, further comprising at least one reinforcement housed in the sole.

5. The tire as claimed in claim 1, wherein the sole and the distal portion of said sidewall are substantially aligned radially, in the unloaded state.

6. The tire as claimed in claim 1, wherein, in a direction parallel to the axis of revolution, the sole has a width dimension that is strictly greater than the maximum distance separating the two sidewalls, in the unloaded state.

7. The tire as claimed in claim 1, wherein the intermediate portion is arranged to extend towards the chamber under the effect of a radial compression, the distal portion being arranged to extend away from the chamber under the effect of a radial compression.

8. A rolling member for an agricultural machine, comprising a substantially cylindrical support capable of rotating about an axis and at least one tire as claimed in claim 1 mounted around the support.

9. The rolling member as claimed in claim 8, further comprising at least one spacer mounted around the support, adjacent to and in contact with said tire, in such a manner that said tire is kept at a distance from another tire mounted around the support.

10. The rolling member as claimed in claim 8 Of claim 9, wherein the support is in the form of a wheel rim around which the tire is mounted.

11. The rolling member as claimed in either claim 8, wherein the support comprises an assembly of wheel rims, said tire being mounted around at least one of the wheel rims.