FLEXIBLE SPRING MEMBER AS WELL AS GAS SPRING ASSEMBLY AND METHOD OF MANUFACTURE

• US 20140035210A1
• Filed: 08/05/2013
• Published: 02/06/2014
• Est. Priority Date: 08/03/2012
• Status: Active Grant

• Current Assignee: Firestone Industrial Products
• Original Assignee: Firestone Industrial Products
• Inventors: Brookes, Graham R.
• Granted Patent: US 9,234,557 B2
• Time in Patent Office: Days
• US Class Current: 267/64.27
• CPC Class Codes: B60G 11/27 wherein the fluid is a gas
• CPC Class Codes: B60G 2202/152 Pneumatic spring
• CPC Class Codes: B60G 2206/42 Springs
• CPC Class Codes: F16F 2226/02 Surface treatments
• CPC Class Codes: F16F 9/0409 characterised by the wall structure
• CPC Class Codes: F16F 9/05 the flexible wall being of the rolling diaphragm type
• CPC Class Codes: F16F 9/3292 Sensor arrangements

Abstract

Flexible spring members can be dimensioned for securement to an associated gas spring end member. The flexible spring member can be at least partially formed from elastomeric material. The flexible spring member can also include a marking disposed along a surface thereof that includes one or more indicia. The marking can be at least partially formed by an indicia layer and an outer layer. The indicia layer can include one or more quantities of material that at least partially form the one or more indicia. The outer layer can be formed from a quantity of material that is disposed overtop of the indicia layer such that the one or more indicia of the indicia layer are substantially encapsulated. Gas spring assemblies, suspension systems, methods of manufacture and manufacturing systems are also included.

Claims

1. A flexible spring member dimensioned for securement to an associated gas spring end member, said flexible spring member comprising:

a flexible wall at least partially formed from elastomeric material and including at least one surface; and

,

a marking including one or more indicia disposed along said surface, said marking being at least partially formed by a combination of an indicia layer and an outer layer, said indicia layer including one or more quantities of material that at least partially form said one or more indicia, and said outer layer including a quantity of material that is disposed overtop of said indicia layer such that said one or more indicia of said indicia layer are substantially encapsulated along said surface.

2. A flexible spring member according to claim 1, wherein said indicia layer is disposed on surface of said flexible wall and said outer layer extends along said surface of said flexible wall outwardly beyond said indicia layer to substantially encapsulate said indicia layer.

3. A flexible spring member according to claim 1, wherein one of said flexible wall and said marking includes a base layer and said indicia layer of said marking is disposed on said base layer such that said base layer is interposed between said flexible wall and said indicia layer.

4. A flexible spring member according to claim 3, wherein said outer layer extends along said base layer outwardly beyond said indicia layer to substantially encapsulate said indicia layer.

5. A flexible spring member according to claim 3, wherein said outer layer extends along said surface of said flexible wall outwardly beyond said indicia layer and said base layer to substantially encapsulate said indicia layer and said base layer.

6. A flexible spring member according to claim 3, wherein said base layer is disposed along said surface of said flexible wall.

7. A flexible spring member according to claim 3, wherein said base layer is at least partially embedded within said flexible wall.

8. A flexible spring member according to claim 3, wherein said base layer is at least partially formed from a quantity of material suitable for inhibiting migration of compounds from said elastomeric material of said flexible wall into said indicia layer.

9. A flexible spring member according to claim 1, wherein said flexible wall has a color and said indicia layer includes one or more quantities of colorant material of having a contrasting color to said color of said flexible wall.

10. A flexible spring member according to claim 1, wherein said indicia layer is at least partially formed from a quantity of colorant material selected from the group consisting of inks, dyes, paints, stains, appliques and sheet materials.

11. A flexible spring member according to claim 1, wherein said outer layer is at least partially formed from a quantity of material suitable for inhibiting degradation of said indicia layer due to exposure one or more of oxygen (o₂), ozone (o₃) and UV radiation.

12. A gas spring assembly comprising:

a flexible spring member being at least partially formed from elastomeric material and having a longitudinal axis, said flexible spring member extending peripherally about said longitudinal axis and between longitudinally spaced-apart ends, and said flexible spring member including an inner surface and an outer surface;

a marking including one or more indicia disposed along one of said inner surface and said outer surface, said marking being at least partially formed by a combination of an indicia layer and an outer layer, said indicia layer including one or more quantities of material that at least partially form said one or more indicia, and said outer layer including a quantity of material that is disposed overtop of said indicia layer such that said one or more indicia of said indicia layer are substantially encapsulated along said one of said inner surface and said outer surface; and

,

an end member secured across one of said longitudinally spaced-apart ends in a substantially fluid-tight manner such that a spring chamber is at least partially defined by said flexible spring member and said end member.

13. A gas spring assembly according to claim 12, wherein said end member is a first end member and said gas spring assembly further comprises a second end member secured across the other of said longitudinally spaced-apart ends in a substantially fluid-tight manner, said second end member including an outer side wall with at least a portion of said flexible spring member forming a rolling lobe displaceable along said outer side wall.

14. A method of manufacturing a flexible spring member, said method comprising:

providing a flexible wall that is at least partially formed from elastomeric material and has a surface; and

,

forming a marking having one or more indicia along said surface, said action of forming a marking including;

applying one or more quantities of colorant material along said surface to form an indicia layer along said surface that at least partially forms the one or more visually-identifiable indicia; and

,

applying a quantity of material along said surface to form an outer layer along said surface disposed overtop of said indicia layer such that said one or more indicia are substantially encapsulated.

15. A method according to claim 14, wherein applying said one or more quantities of material along said surface to form said indicia layer include applying said one or more quantities of material on said surface, and applying said quantity of material along said surface to form said outer layer includes applying said quantity of material on said surface outwardly beyond said indicia layer to substantially encapsulate said indicia layer between said surface of said flexible wall and said outer layer.

16. A method according to claim 14, wherein said action of forming a marking includes applying a quantity of material along said flexible wall to form a base layer along said surface, and forming said indicia layer along said surface includes applying said one or more quantities of material along said base layer such that said base layer is interposed between said elastomeric material of said flexible wall and said indicia layer.

17. A method according to claim 16, wherein applying said quantity of material along said surface to form said outer layer includes applying said quantity of material overtop of said indicia layer and along at least a portion of said base layer such that said indicia layer is substantially encapsulated between said outer layer and said base layer.

18. A method according to claim 17, wherein applying said quantity of material of said outer layer overtop of said indicia layer and along at least a portion of said base layer includes applying said quantity of material of said outer layer outwardly beyond said base layer and along said surface of said flexible wall to substantially encapsulate said indicia layer and said base layer between said surface of said flexible wall and said outer layer.

19. A method according to claim 14, wherein at least one of said actions of applying said one or more quantities of colorant material for form said indicia layer and applying said quantity of material to form said outer layer includes dispensing a liquid or semi-solid compound along said surface of said flexible wall.

20. A method according to claim 14 further comprising providing at least a pre-constructed portion of a marking including at least one of said one or more quantities of colorant forming said indicia layer and said quantity of material forming said base layer, and at least one of said actions of applying said one or more quantities of colorant material for form said indicia layer and applying said quantity of material to form said outer layer includes securing said pre-constructed portion of said marking along said surface of said flexible wall.