MOLDED HOSE WITH FABRIC LAYER

• US 20160040806A1
• Filed: 08/06/2014
• Published: 02/11/2016
• Est. Priority Date: 08/06/2014
• Status: Active Grant

• Current Assignee: Purosil, LLC
• Original Assignee: Purosil, LLC
• Inventors: Garrett, Thomas M., Posiviata, Richard W.
• Granted Patent: US 10,527,204 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B29C 70/766 on the end part of a tubular article
• CPC Class Codes: B29D 23/003 Pipe joints, e.g. straight joints
• CPC Class Codes: B29D 23/18 Pleated or corrugated hoses
• CPC Class Codes: B29L 2023/005 Hoses, i.e. flexible
• CPC Class Codes: F16L 11/005 consisting completely or partially of material other than fibres, plastics or metal
• CPC Class Codes: F16L 11/085 comprising one or more braided layers in combination with layers of a helically wound core or wire F16L11/088
• CPC Class Codes: F16L 11/10 with reinforcements not embedded in the wall F16L11/11 takes precedence
• CPC Class Codes: F16L 33/03 Self-locking elastic clips
• CPC Class Codes: F16L 33/04 tightened by tangentially-arranged threaded pin and nut
• CPC Class Codes: F16L 33/08 in which a worm coacts with a part of the hose-encircling member that is toothed like a worm-wheel

Abstract

A reinforced hose includes an inner layer, a reinforcing intermediate layer, and an outer layer. The inner layer has and inwardly projecting sealing rib extending circumferentially on an inner surface thereof. The inner surface may also have an end stop to be engaged by a fitting received in the hose. The outer layer has a pair of annular clamp guides projecting outwardly which are axially spaced from an end of the hose. The sealing rib is positioned between the clamp guides to indicate an optimum location for a hose clamp.

Claims

1. A hose structure comprising:

(a) an elongated tubular hose member having an outer surface, an inner surface, and a tubular axis;

the hose member having opposite ends; and

(b) a radially outwardly projecting circumferential clamp guide formed on the outer surface of the hose member in axially spaced relation to an end of the hose member.

2. A hose structure as set forth in claim 1 wherein the clamp guide is a first clamp guide and including:

(a) a second clamp guide substantially similar to the first clamp guide and formed on the outer surface of the hose member in axially spaced relation to the first clamp guide.

3. A hose structure as set forth in claim 1 and including:

(a) an inwardly projecting circumferential sealing rib formed on the inner surface of the hose member in axially spaced relation to the clamp guide.

4. A hose structure as set forth in claim 1 and including:

(a) a plurality of axially spaced, inwardly projecting, circumferential, sealing ribs formed on the inner surface of the hose member in axially spaced relation to the clamp guide.

5. A hose structure as set forth in claim 1 and including:

(a) an inwardly projecting stop structure formed on the inner surface of the hose member in axially spaced relation to the clamp guide.

6. A hose structure as set forth in claim 1 wherein:

(a) the hose member is formed with more than one layer of material.

7. A hose structure as set forth in claim 1 wherein:

(a) the hose member is formed with a reinforcing layer.

8. A hose structure as set forth in claim 1 wherein:

(a) the hose member is formed of a flexible material.

9. A hose structure as set forth in claim 1 wherein:

(a) the hose member is formed of a flexible elastomeric material.

10. A hose structure comprising:

(a) an elongated flexible tubular hose member having an outer surface, and inner surface, and a tubular axis, the hose member having opposite ends;

(b) a pair of radially outwardly projecting circumferential clamp guides formed on the outer surface of the hose member in axially spaced relation to one another and to an end of the hose member;

(c) an inwardly projecting circumferential stop structure formed on the inner surface of the hose member in axially spaced relation to the clamp guide; and

(d) an inwardly projecting circumferential sealing rib formed on the inner surface of the hose member in axially spaced relation to the clamp guide.

11. A hose structure as set forth in claim 10 and including:

(a) a plurality of axially spaced, inwardly projecting, circumferential, sealing ribs formed on the inner surface of the hose member and axially positioned between the first and second clamp guides.

12. A hose structure as set forth in claim 10 wherein:

(a) the hose member is formed with more than one layer of material.

13. A hose structure as set forth in claim 10 wherein:

(a) the hose member is formed with a reinforcing layer.

14. A hose comprising:

(a) an elastomeric tubular inner layer with an inner surface, opposite ends, and a tubular axis;

(b) an intermediate reinforcement layer positioned in surrounding relation about the inner layer;

(c) an elastomeric outer layer with an outer surface positioned in surrounding relation about the reinforcement layer; and

(d) a radially outwardly projecting and circumferentially extending clamp guide formed on the outer surface of the outer layer.

15. The hose according to claim 14, wherein the outer layer is molded simultaneously with the clamp guide.

16. The hose according to claim 14, wherein the clamp guide is a first clamp guide and including a second clamp guide axially spaced from the first clamp guide.

17. The hose according to claim 16, further comprising an axially inwardly extending circumferential sealing rib molded on the inner layer inner surface.

18. The hose according to claim 17, wherein the rib is located between the first and second clamp guides.

19. The hose according to claim 17, further comprising a stop projecting inward and longitudinally spaced on the inner surface and in a parallel relationship with respect to the sealing rib, the stop having a diameter that is larger than both a diameter of the rib and a diameter of the inner surface.

20. The hose according to claim 14, wherein the intermediate layer is formed of seamless braids of synthetic textile fibers.

21. The hose according to claim 14, wherein the intermediate layer is formed of a braided fabric.

22. The hose according to claim 14, wherein the outer layer is formed of a rubber material.

23. A method of forming a hose structure comprising the steps of:

(a) forming an elongated tubular hose member having an outer surface, an inner surface, a tubular axis, and a substantially constant inner diameter;

the hose member having opposite ends; and

(b) molding an outer layer onto the outer surface of the hose member, the outer layer including an outwardly projecting circumferential clamp guide positioned in axially spaced relation to an end of the hose member.

24. A method as set forth in claim 23 wherein molding the outer layer includes the step of:

(a) molding the outer layer using a mold having a cylindrical inner surface with circumferential clamp guide groove which forms the clamp guide.

25. A method as set forth in claim 23 wherein molding the outer layer includes the step of:

(a) molding the outer layer using a mold having a cylindrical inner surface with a pair of axially spaced circumferential clamp guide grooves which forms a pair of axially spaced clamp guides.

26. A method as set forth in claim 23 and including the steps of:

(a) providing an elongated mandrel having a substantially constant diameter; and

(b) inserting the mandrel into the hose member to support the hose member during molding of the outer layer.

27. A method as set forth in claim 23 including the step of:

(a) providing a reinforcing layer on said hose member prior to molding the outer layer thereon.

28. A method as set forth in claim 23 and including the steps of:

(a) providing an elongated mandrel having a substantially constant diameter and a circumferential groove;

(b) inserting the mandrel into the hose member to support the hose member during molding of the outer layer and to form an inwardly projecting circumferential rib on the inner surface of the hose member in axially spaced relation to the clamp guide.

29. A method as set forth in claim 23 and including the steps of:

(a) providing an elongated mandrel having a substantially constant diameter and a circumferential groove;

(b) inserting the mandrel into the hose member to support the hose member during molding of the outer layer and to form an inwardly projecting circumferential stop member on the inner surface of the hose member in axially spaced relation to the clamp guide.

30. A method of producing a hose structure comprising the steps of:

(a) forming a hose body having a tubular interior wall with a substantially constant inner diameter and a multilayer construction by laminating an intermediate layer onto an inner layer and an outer layer onto the intermediate layer, the hose body being untreated and formable;

(b) positioning a molding portion of a mandrel within a portion of the hose body;

(c) deforming the portion of the hose body corresponding to the molding portion of the mandrel into a shape following a contour of the mandrel to obtain a tubular hose body;

(d) providing an outer mold including a circumferential groove and compressing the outer mold radially onto the hose body fitted on the mandrel so as to sandwich the hose body between the outer mold and the mandrel, such that the tubular hose body is deformed into the groove of the mold thereby forming an outwardly projecting clamp guide; and

(e) treating the tubular hose body to obtain a final form of the hose.

31. The method of claim 30 and further including the steps of:

(a) providing an annular groove on the molding portion of the mandrel, the groove being having groove diameter smaller than the inner diameter of the tubular hose body wall; and

(b) deforming a portion of the hose body corresponding to the molding portion into a shape following a contour of the groove to obtain a tubular hose body including a circumferential rib in axially spaced relation to the clamp guide.

32. The method of claim 30 wherein the step of treating the hose body includes vulcanizing the hose body.

33. The method of claim 30 wherein the step of treating the hose body includes heating the hose body.