GB2557373A - Valve for inflatable object - Google Patents

Abstract

A valve comprises a tubular portion 22 having a hollow bore (24, Fig. 6) along its length and a flange 23 extending outwardly from the tubular portion 22. An end of the tubular portion is closed by cooperating first and second resilient sealing members 26 having first and second sealing surfaces disposed in sealing contact with each other. The sealing surfaces are both curved and define an arcuate slit 25 where they are in contact. A valve is also disclosed (Figs. 14-17, 23-30) comprising a body having first and second opposite sides, a recess formed in the first side, a first passage extending from the recess through the body to the second side, and a second passage extending through the body from the recess to the second side. A plug has a head located within the recess. A stem extends from the head through the first passage and has an anchoring portion at the opposite end of the stem from the head located on the second side of the body. The head seals the end of the second passage at the first side of the body.

Description

(71) Applicant(s):

Joseph Anthony Griffiths

Unit 10, Springlakes Industrial Estate,

Deadbrook Lane, ALDERSHOT, Hants, GU12 4UH, United Kingdom (51) INT CL:

F16K 15/20 (2006.01) (56) Documents Cited:

GB 2258519 A GB 2153048 A GB 0424451 A US 5881772 A (58) Field of Search:

INT CLF16K

F16K 15/14 (2006.01)

GB 2190466 A GB 1066508 A WO 2008/134808 A1

Other: Online: WPI, EPODOC (72) Inventor(s):

Joseph Anthony Griffiths (74) Agent and/or Address for Service:

Venner Shipley LLP

200 Aldersgate, LONDON, EC1A4HD,

United Kingdom (54) Title of the Invention: Valve for inflatable object Abstract Title: Valve for inflatable object (57) A valve comprises a tubular portion 22 having a hollow bore (24, Fig. 6) along its length and a flange 23 extending outwardly from the tubular portion 22. An end of the tubular portion is closed by cooperating first and second resilient sealing members 26 having first and second sealing surfaces disposed in sealing contact with each other. The sealing surfaces are both curved and define an arcuate slit 25 where they are in contact. A valve is also disclosed (Figs. 14-17, 23-30) comprising a body having first and second opposite sides, a recess formed in the first side, a first passage extending from the recess through the body to the second side, and a second passage extending through the body from the recess to the second side. A plug has a head located within the recess. Astern extends from the head through the first passage and has an anchoring portion at the opposite end of the stem from the head located on the second side of the body. The headseals the end of the second passage at the first side of the body.

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Valve for Inflatable Object

Technical field

The present invention relates to a valve for an inflatable object and, in particular, to a valve for use in a ball such as a football or rugby ball.

Introduction

Inflatable objects such as sports balls, including footballs and rugby balls, conventionally comprise an inflatable bladder within an outer casing of stitched textile panels, usually leather or plastic-coated fabric. The bladder includes a one-way inflation valve accessible through the outer casing to receive a hollow inflation needle to inflate the object.

One problem with such known inflatable objects is that they may tend to deflate by leakage of the pressurised air within the bladder out through the valve. Such deflation may be a slow continuous leakage of air out through the valve, simply due to the design and configuration of the valve. Also, such deflation may be exacerbated through repeated impacts of the object which, in the case of a sports ball, occur frequently during use. Such impacts may deform, temporarily or otherwise, the inflation valve, resulting in discrete instances of air leakage, and/or increased rate of air leakage.

Summary of the invention

In view of the above, it is the object of the present invention to provide a valve, and an inflatable object including such a valve, that may reduce one or more of the problems mentioned above.

According to a first embodiment there is provided a valve for use in an inflatable object, the valve comprising a tubular portion having a hollow bore along at least a part of its length, and a flange extending outwardly from the tubular portion, wherein an end of the tubular portion is closed by cooperating first and second resilient sealing members respectively having first and second sealing surfaces disposed in sealing contact with each other, and wherein the first and second sealing surfaces are curved and define an arcuate slit where the first and second sealing surfaces are in contact.

The first and second sealing surfaces may share a common radius of curvature.

The first sealing member may be configured so as to be biased into contact with the second sealing member.

A peripheral wall may extend from the flange and surrounds the tubular portion. The peripheral wall may surround an end of the tubular portion which comprises the closed end. The peripheral wall may extend substantially perpendicularly from the flange and in a direction substantially parallel to an axis of the tubular portion. The wall may extend a distance from the flange at least equal to the distance between the flange and the closed end of the tubular portion. The wall may extend a distance from the flange which is greater that the distance between the flange and the closed end of the tubular portion.

The first and second sealing members may be formed integrally with, and extend from the peripheral wall.

The valve may further comprise a biasing element configured to bias the first sealing member into sealing contact with the second sealing member. The biasing element may be formed integrally with the peripheral wall. The biasing element may be formed integrally with the first sealing member. The biasing element may comprise a resilient wall section extending from the peripheral wall to the first sealing member.

The first and second sealing members may be formed integrally with, and may be extensions of, the wall of the tubular portion.

The valve may further comprise a reinforcing element at least partially surrounding the closed end of the tubular portion. The reinforcing element may comprise a band entirely surrounding the closed end of the tubular portion.

According to a further embodiment there is provided a valve for use with an inflatable object, the valve comprising a body having first and second opposite sides, a recess formed in the first side of the body, a first passage extending from the recess through the body to the second side, and a second passage extending through the body from the

-3recess to the second side, a plug having a head located within the recess, a stem extending from the head through the first passage, and an anchoring portion at the opposite end of the stem from the head, located on the second side of the body, wherein the head seals the end of the second passage at the first side of the body.

The head may seal the end of the first passage at the first side of the body. The plug may be made of a resilient material, and the stem may be in tension to pull the head against the recess.

The anchoring portion may be located in a cavity on the second side of the body. The anchoring portion may taper towards the distal and of the plug remote from the head, and may include a flat portion extending substantially perpendicularly from the stem, which abuts the second side of the valve body.

The recess may be substantially conical and the plug head may be correspondingly shaped to conform to at least a portion of the conical shape of the recess.

The first and second passages may extend substantially in parallel through the body.

The valve may further comprise a peripheral flange extending outwardly from the valve body.

An open end of the second passage on the second side of the valve body may define an inflation aperture, and the second side of the body may include a channel within which the inflation aperture is located.

The head may include a cavity such that the head is cup-shaped. The head may include a reinforcing bead around at least a portion of the inside surface of the cavity. The bead may be circular and may extend around the entire circumference of the cavity of the head.

The bead may extend around a part of the head that is radially equally or further spaced from the centre of the head than the position of the end of the second passage in the recess.

The bead may extend around a radially outermost peripheral portion of the head.

-4The head of the plug may include a peripheral skirt which extends outward from the head around the perimeter of the head and which lies flush against a surface of the valve body. The skirt may extend around a distal end of the head.

The skirt may extend radially outward from the head. Alternatively, the skirt may extend at an angle from the head relative to an axis of the stem, and angled towards anchoring portion.

The first side of the body may include a depression surrounding the recess and the skirt maybe received within the depression.

A first section of the surface of the recess may be shaped correspondingly to a first section of the facing surface of the head, and a second section of the surface of the 15 recess may be shaped out of correspondence with a second section of the facing surface of the head.

A space maybe defined between the second section of the surface of the recess and the second section of the facing surface of the head.

The first circumferential section of the surface of the recess may lie at a different angle to the second circumferential section of the surface of the recess.

The respective first sections of the surface of the recess and of the head may comprise 25 an outer circumferential section of the surface of the recess and of the head part, and the respective second circumferential sections of the surface of the recess and of the head may comprise an inner circumferential section of the surface of the recess and of the head.

The end of the second passage at the first side of the body may be disposed at the first section of the surface of the recess.

The valve may comprise a cover member with an aperture therein bonded to the flange or valve body, and with an inflation aperture respectively aligned with the hollow bore of the tubular portion or the second passage.

-5The sealing surfaces or the plug head and recess may comprise a primary valve seal, and the cover member may comprise a secondary valve seal.

The secondary valve seal may comprise a domed projecting element with a slit formed 5 therein.

The cover member may comprise a pair of spaced arched support members, and the aperture may be disposed in a gap defined between the arched support members.

The cover member may comprise an inflation tube in fluid communication with the aperture.

According to a further embodiment there is provided an inflatable object comprising an inflatable bladder, an outer layer, and a valve as described above for inflation of the bladder within the outer layer.

The inflatable object may comprise one of a rugby football or a soccer football.

Brief description of the drawings

Embodiments of the invention will be described, by way of example only, with reference to the accompanying drawings in which:

Fig. 1 is a perspective view of a known configuration of valve in a closed position;

Fig. 2 is a perspective view of the valve of Fig. 1 in an open position with an inflation needle disposed within the valve;

Fig. 3 cross-sectional side view of the valve of Figs. 1 and 2 in combination with a section of a bladder and outer layer of an inflatable sports ball;

Fig. 4 is a perspective view of a valve of a first embodiment in a closed position;

Fig. 5 is a perspective view of the valve of Fig. 4 in an open position with an inflation needle disposed within the valve;

Fig. 6 is cross-sectional side view of the valve of Figs. 4 and 5 in combination with a section of a bladder and outer layer of an inflatable sports ball;

Fig. 7 is a perspective view of a valve of a second embodiment in a closed position;

Fig. 8 is a cross-sectional side view of the valve of Fig. 7 in combination with a section of a bladder and outer layer of an inflatable sports ball;

-6Fig. 9 is a perspective view of a valve of a third embodiment in a closed position;

Fig. 10 is a perspective view of a valve of a fourth embodiment in a closed position;

Fig. ii is a cross-sectional side view of the valve of Fig. io in combination with a section of a bladder and outer layer of an inflatable sports ball;

Fig. 12 is a perspective view of a valve of a fifth embodiment in a closed position;

Fig. 13 is a cross-sectional side view of the valve of Fig. 12 in combination with a section of a bladder and outer layer of an inflatable sports ball;

Fig. 14 is an exploded cross-sectional side view of a valve of a sixth embodiment;

Fig. 15 is a cross-sectional side view of the valve of Fig. 14 in a closed position in combination with a section of a bladder and outer layer of an inflatable sports ball;

Fig. 16 is a cross-sectional side view of the valve of Fig. 14 in an open position with an inflation needle disposed in the valve and in combination with a section of a bladder and outer layer of an inflatable sports ball;

Fig. 17 is a cross-sectional side view of a valve of a seventh embodiment;

Fig. 18 is an exploded perspective view of a valve of an eighth embodiment;

Fig. 19 is a cross-sectional side view of the valve of Fig. 18 in combination with a section of a bladder and outer layer of an inflatable sports ball;

Fig. 20A is a cross-sectional side view of a first variation of attachment disc for use in the valve of Fig. 18;

Fig. 20B is a cross-sectional side view of a second variation of attachment disc for use in the valve of Fig. 18;

Fig. 20C is a cross-sectional side view of a third variation of attachment disc for use in the valve of Fig. 18;

Fig. 21 is a cross-sectional side view of a valve of a ninth embodiment;

Fig. 22 is a perspective view of a secondary valve component of the valve of Fig. 21;

Fig. 23 is a side view of a valve of a tenth embodiment;

Fig. 24 is a cross-sectional side view along the line X-X of the valve of Fig. 23;

Fig. 25 is an enlarged view of a portion of the valve shown in Fig. 24

Figs. 26A and 26B are perspective views of a valve plug of the valve of Figs. 23 and 24;

Fig. 27 is an enlarged cross-sectional partial side view similar to that of Fig. 25, but of a valve of an eleventh embodiment; and

Fig. 28 is a perspective view of a valve plug of the valve of Fig. 27.

Fig. 29 is an exploded cross-sectional side view of a valve of a twelfth embodiment;

Fig. 30 is a cross-sectional side view of the valve of Fig. 29 in a closed position in combination with a section of a bladder and outer layer of an inflatable sports ball;

-7Detailed description

Referring to Figs. 1 to 3, a known configuration of valve 1 for an inflatable object is shown. For the purposes of the description of embodiments herein, valves will be described in the context of a football as an inflatable object, but it should be appreciated that the valves maybe used with other inflatable objects, such as other inflatable sports balls, or other types of inflatable objects.

The valve 1 comprises a hollow stem 2 and a flange 3 extending radially outward from 10 the stem 2. The stem 2 includes a hollow bore 4 along a portion of its length, and a distal end of the stem 2 includes a slit 5 where two resilient sealing flaps 6 lie in contact and close the distal end of the stem 2. The opposite end of the stem 2 to the slit 5 includes an opening 7 for insertion of an inflation needle. The flange 3 is disposed between the opposite ends of the stem 2, and closer to the opening 7 than the slit 5.

In use, the valve 1 is bonded to an inflatable bladder 8, with an inner face of the flange 3 bonded around a hole 9 in the bladder 8. The bladder 8 is disposed within an outer casing 10 comprising the ball’s outer surface, and with the end of the stem including the opening 7 aligned with a hole 11 in the outer casing 10. The bladder 8 is inflated by insertion of an inflation needle 12 through the opening 7, through the hollow bore 4 of the stem 2, and through the slit 5, pushing apart the sealing flaps 6, as shown in Fig. 2. Once the bladder 8 is fully inflated, the needle 12 is withdrawn and the sealing flaps 6 come back into contact the prevent escape of air from within the football. Due to the design of the valve 1, the sealing flaps 6 are hot held in contact against each other by any resilient force of their own material or construction. Only the interior pressure within the football acting on the side faces of the flaps, as shown by arrows P in Fig. 3, acts to keep the valve closed to prevent escape of air. However, this can be insufficient to prevent leakage of air from the football. Also, repeated inflation of the football, involving insertion of the inflation needle 12 into the valve 1, may deform and/or stretch the sealing flaps 6, resulting in loose and/or uneven contact between the sealing flaps 6, further allowing leakage of air from within the football.

Referring to Figs. 4 to 6, a valve 21 of a first embodiment of the invention is shown, and comprises a hollow stem 22 and a flange 23 extending radially outward from the stem

22. The stem 22 includes a hollow bore 24 along a portion of its length, and a distal end of the stem 22 includes a slit 25 where two resilient sealing flaps 26 lie in contact and

-8close the distal end of the stem 22. The opposite end of the stem 22 to the slit 25 includes an opening 27 for insertion of an inflation needle. The flange 23 is disposed between the opposite ends of the stem 22, and closer to the opening 27 than the slit 25.

In use, the valve 21 is bonded to an inflatable bladder 8, with an inner face of the flange 23 bonded around a hole 9 in the bladder 8. The bladder 8 is disposed within an outer casing 10 comprising the football’s outer surface, and with the end of the stem including the opening 27 aligned with a hole 11 in the outer casing 10. The bladder 8 is inflated by insertion of an inflation needle 12 through the opening 27, through the hollow bore 14 of the stem 12, and through the slit 15, pushing apart the sealing flaps

16, as shown in Fig. 5.

A difference between the valve 21 of the first embodiment and the known configuration of valve 1 shown in Figs. 1 to 3 is that the stem 22 comprises a generally arcuate distal end in cross-section, such that the two sealing flaps 26 are arcuate, and substantially concentric, and configured such that one sealing flap 26 at least partially surrounds the other sealing flap 26. The resulting slit 25 is therefore also arcuate.

In use, when an inflation needle 12 is inserted into the valve 21, the inner sealing flap is deflected out of its arcuate form, as shown in Fig. 5. However, after the football has been inflated and the inflation needle 12 removed, the inner sealing flap 26 ‘snaps’ shut back into its arcuate shape in contact with the other sealing flap 26, as shown in Fig. 4. This configuration of arcuate sealing flap 26 results in the inner sealing flap 26 being resiliently biased into contact with the other, outer sealing flap 26, enhancing the seal between the two flaps 26 and thereby the air-sight integrity of the valve 21.

Referring to Figs. 7 and 8, a valve 31 of a second embodiment of the invention is shown, and as with the valve 21 of the first embodiment, comprises a hollow stem 32 with a radially-extending flange 33, the stem 32 including a hollow bore 34, and a slit 35 at the distal end where two resilient sealing flaps 36 lie in contact and close the distal end.

The opposite end of the stem 32 to the slit 35 includes an opening 37 for insertion of an inflation needle. As with the valve 21 of the first embodiment, the distal end of the stem 32 is generally arcuate, as are the two sealing flaps 36, having the same general configuration as the arcuate flaps 26 of the valve 21 of the first embodiment. This configuration provides the advantage described previously of inner sealing flap 36 ‘snapping’ shut after removal of an inflation needle and being resiliently biased into

-9contact with the other, outer sealing flap 36, enhancing the seal between the two flaps 36 and thereby the air-sight integrity of the valve 31.

In use, the valve 31 is bonded to an inflatable bladder 8 with an inner face of the flange 5 33 bonded around a hole 9 in the bladder 8, and the bladder 8 is disposed within an outer casing 10 with the end of the stem 32 including the opening 37 aligned with a hole 11 in the outer casing 10.

A difference between the valve 31 of the second embodiment and the valve 21 of the first embodiment shown in Figs. 4 to 6, is that the flange 33 includes a circular wall 38 extending around, and spaced from, the stem 32. The wall 38 may advantageously extend from the flange surface further than the stem 32, such that the height of the wall 38 (indicated as ‘hi’ in Fig. 8) is greater than the height of the stem 32 (indicated as ‘h₂’ in Fig. 8) from the flange 33. This difference is shown as dimension ‘d’ in Fig. 8. The wall 38 may advantageously provide protection to the stem 32. For example, when the football is inflated, the wall 38 may prevent the stem 32 from being deformed when the football receives an impact, for example when being kicked. This may advantageously prevent deformation of the sealing flaps 36 and thereby further help toward preventing leakage of air from the football through the valve 31. Additionally, the wall 38 may prevent the stem 32 from being deformed when the football is deflated and packaged flat for transport from manufacture, during distribution and sale, before use. For example, if the stem 32 was compressed in a deformed state for an extended period before use, the stem 32 may permanently or semi-permanently remain in the deformed state. The sealing flaps 36 may therefore not align properly which may affect the ability of the valve 31 to function correctly and to provide an effective airtight seal as described above. Therefore, the wall 38 helps prevent such damage when the football is deflated.

Another difference between the valve 31 of the second embodiment and the valve 21 of the first embodiment shown in Figs. 4 to 6, is that the stem 32 is shorter than the stem

22 of the valve 21 of the first embodiment. This may advantageously facilitate manufacture of the wall 38 to be higher than the stem 32, and may also make manufacture simpler, and require less material for manufacture. A shorter stem 32 may also be less susceptible to deformation or damage. However, it should be appreciated that the particular dimensions and proportions of the stem 32 and wall 38 shown in Figs. 7 and 8 are exemplary only and the stem 32 and wall 38 may be formed with other dimensions/proportions within the scope of the invention. For example, the

- 10 stem 32 may be of a similar length to the stem 22 of the valve 21 of Figs. 4 to 6, and the wall 38 maybe configured to be equal or greater in height than such a stem.

Referring to Fig. 9, a valve 41 of a third embodiment of the invention is shown and is 5 similar to the valve 21 of the first embodiment, comprising a hollow stem 42 with a radially-extending flange 43, the stem 42 including a hollow bore, and a slit 45 at the distal end where two resilient sealing flaps 46 lie in contact and close the distal end.

The opposite end of the stem 42 to the slit 45 includes an opening for insertion of an inflation needle. As with the valve 41 of the first embodiment, the distal end of the stem

42 is generally arcuate, as are the two sealing flaps 46, having the same general configuration as the arcuate flaps 46 of the valve 41 of the first embodiment, providing the advantage described previously of inner sealing flap 46 ‘snapping’ shut after removal of an inflation needle and being resiliently biased into contact with the other, outer sealing flap 46, enhancing the seal between the two flaps 46 and thereby the air15 sight integrity of the valve 41.

A difference between the valve 41 of the third embodiment and the valve 21 of the first embodiment shown in Figs. 4 to 6, is that the stem 42 includes a strengthening band 48 extending around the stem 42 proximate the distal end thereof. The strengthening band 48 may serve to provide increased resilience to the sealing flaps 46, and particularly serve to ensure the inner sealing flap 46 returns to its sealing state in contact with the other sealing flap 46, upon removal of an inflation needle from the valve 41. The strengthening band may also serve to help the stem 42 retain its shape, after repeated deformation by repeated inflations by insertion of an inflation needle.

These benefits may advantageously help ensure the valve 41 remains airtight during use over extended periods. The strengthening band may be made of an elastic material, such as rubber, or an inelastic material such as metal or plastic.

Referring to Figs. 10 and 11, a valve 51 of a fourth embodiment of the invention is shown, and is similar to the valve 31 of the second embodiment, comprising a stem 52 with a hollow bore 54 and a radially-extending flange 53, and an arcuate slit 55 at the distal end of the stem 52 where sealing flaps 56 lie in contact and close the distal end. The opposite end of the stem 52 to the slit 55 includes an opening 57 for insertion of an inflation needle. Also similarly to the valve 31 of the second embodiment, the flange 53 includes a circular wall 58 extending around the stem 52. The wall 58 may advantageously extend from the flange surface by the same distance as the stem 52

- 11 (shown in solid lines in Figs. 10 and 11), or may extend further from the flange 53 than the stem 52 (shown in dashed lines in Fig. 11), such that the height of the wall 58 (indicated as ‘hf in Fig. 11) is greater than the height of the stem 52 (indicated as ‘h₂’ in Fig. 11) from the flange 53 by a difference is shown as dimension ‘d’ in Fig. 11. The wall

58 may advantageously provide the protection benefits described previously with respect to the valve 31 of the second embodiment. The stem 52 may also be shorter than the stem 22 of the valve 21 of the first embodiment, as in the valve 31 of the second embodiment, which may advantageously also provide the same benefits described previously. However, it should be appreciated that the particular dimensions and proportions of the stem 52 and wall 58 shown in Figs. 10 and 11 are exemplary only and the stem 52 and wall 58 maybe formed with other dimensions/proportions within the scope of the invention. For example, the stem 52 may be of a similar length to the stem 22 of the valve 21 of Figs. 4 to 6, and the wall 58 may be configured to be equal or greater in height than such a stem.

A difference with the valve 51 of the fourth embodiment over the valve 31 of the second embodiment is that the stem 52 is formed integrally with the wall 58. The outer sealing flap 56 extends from the wall 58 at each end of the flap 56, and extends around the inner sealing flap. The inner sealing flap is formed as a solid body extending from the wall 58, and is separated from the outer sealing flap 56 by the arcuate slit 55. This configuration provides an advantage of a further reinforced stem 52 and sealing flaps 56, which can resist deformation in use of the football, and also resist permanent or semi-permanent deformation is compressed when the football is deflated.

As with the valves of the previous embodiments, in use, the valve 51 is bonded to an inflatable bladder 8 with an inner face of the flange 53 bonded around a hole 9 in the bladder 8, and the bladder 8 is disposed within an outer casing 10 with the end of the stem 52 including the opening 57 aligned with a hole 11 in the outer casing 10.

Referring to Figs. 12 and 13, a valve 61 of a fifth embodiment of the invention is shown, and is similar to the valve 51 of the fourth embodiment, comprising a stem 62 with a hollow bore 64 and a radially-extending flange 63, and an arcuate slit 65 at the distal end of the stem 62 where sealing flaps 66 lie in contact and close the distal end. The opposite end of the stem 62 to the slit 65 includes an opening 67 for insertion of an inflation needle. The flange 63 includes a circular wall 68 extending around the stem 62. The wall 68 may advantageously extend from the flange surface by the same

- 12 distance as the stem 62 (shown in solid lines in Figs. 12 and 13), or may extend further from the flange 63 than the stem 62 (shown in dashed lines in Fig. 13), such that the height of the wall 68 (indicated as ‘hi’ in Fig. 13) is greater than the height of the stem 62 (indicated as ‘h₂’ in Fig. 13) from the flange 63 by a difference is shown as dimension ‘d’ in Fig. 13. The wall 68 may advantageously provide the protection benefits described previously with respect to the valve 31 of the second embodiment. The stem 62 may also be shorter than the stem 22 of the valve 21 of the first embodiment, as in the valve 31 of the second embodiment, which may advantageously also provide the same benefits described previously. However, it should be appreciated that the particular dimensions and proportions of the stem 62 and wall 68 shown in Figs. 12 and 13 are exemplary only and the stem 62 and wall 68 may be formed with other dimensions/proportions within the scope of the invention. For example, the stem 62 may be of a similar length to the stem 22 of the valve 21 of Figs. 4 to 6, and the wall 68 may be configured to be equal or greater in height than such a stem. Additionally, as with the valve 51 of the fourth embodiment, the stem 62 is formed integrally with the wall 68. The outer sealing flap 66 extends from the wall 68 at each end of the flap 66, and extends around the inner sealing flap 66. The inner sealing flap 66 is formed as a solid body extending from the wall 68, and is separated from the outer sealing flap 66 by the arcuate slit 65. This configuration provides the advantages described above with reference to the valve 51 of the fourth embodiment.

As with the valves of the previous embodiments, in use, the valve 61 is bonded to an inflatable bladder 8 with an inner face of the flange 63 bonded around a hole 9 in the bladder 8, and the bladder 8 is disposed within an outer casing 10 with the end of the stem 62 including the opening 67 aligned with a hole 11 in the outer casing 10.

A difference between the valve 61 of the fifth embodiment, and the valve 51 of the fourth embodiment, is that a biasing element 69 is provided which is configured to bias the outer sealing flap 66 into contact with the inner sealing flap 66. In the exemplary embodiment shown, the biasing element comprises a curved spring wall 69 which is formed integrally with the wall 68, and is also formed integrally with the outer sealing flap 66. Although this integral configuration provides advantages, for example the valve 61 maybe moulded as a single component, reducing production time and making manufacture simple, it should be appreciated that the invention is not limited to such configuration and the biasing element 69 may alternatively be a separate component, which maybe bonded to the wall 68 and/or the outer sealing flap 66. Yet further, the

-13biasing element 69 may be formed integrally with the wall 68 and may abut, directly or indirectly, but not be formed integrally with, the outer sealing flap 66. Within the scope of the invention, the biasing element 69 may comprise any component configured to exert a biasing force on the outer sealing flap 66 to urge it into the closed position in contact with the inner sealing flap 66 (as shown by arrow ‘F’ in Fig. 12). For example, the biasing element 69 may comprise a spring disposed between the wall 68 and the outer sealing flap 66.

In use, when the football is inflated, an inflation needle 12 is inserted through the 10 opening 67 and the outer sealing flap 66 is moved apart from the inner sealing flap 66.

This movement causes the curved spring wall 69 to deflect away from the inner sealing flap 66. Once the football is inflated, the needle is removed and the outer sealing flap 66 returns into contact with the inner sealing flap 66 to close the valve and form an airtight seal as described previously. The curved spring wall 69 further exerts a biasing force on the outer sealing flap 66 in the direction shown by arrow ‘F’ in Fig. 12, urging the outer sealing flap 66 into the closed position in sealing contact with the inner sealing flap 66. This biasing force F further serves to maintain the integrity of the airtight seal, and prevent escape of air through the valve 61.

Referring to Figs. 14 to 16, a valve 71 of a sixth embodiment of the invention is shown, and comprises a valve body 72 and a valve plug 73. The valve body 72 includes a flange 74, and a recess 75 at an inner side of the body 72. A first passage 76 extends through the body 72 from the centre of the recess 75 to the opposite, outer side of the body 72.

A second passage 77 extends from a portion of the recess 75 between the centre and the outer edge of the recess 75, to the outer side of the body 72. The body 72 includes a cavity 78 at the end of the first passage 76 on the outer side of the body 72.

The valve plug 73 comprises a sealing head 79, a stem 80, and a securing projection 81 towards the opposite end of the stem 80 to the sealing head 79. A tail 82 extends from the securing projection 81 in the opposite direction to the stem 80. The valve plug 73 may be formed integrally as a single component, such as by injection moulding, and is made of an elastic resiliently deformable material such as rubber.

The valve 71 is assembled from the separate valve body 72 and valve plug 73 shown in

Fig. 14, to the assembled state shown in Fig. 15, as follows. The tail 82 is fed through the first passage 76 until it projects at the outer side of the body 72. The tail 82 is then

-14pulled to force the securing projection 81 through the first passage 76. Since the securing projection 81 is wider than the first passage 76, the securing projection 81 is forced to deform and compress to squeeze through the first passage 76. Once through the first passage 76, the securing projection 81 is able to return back to its natural shape. From Fig. 14, it can be seen that the securing projection is formed with a tapering or arrow-head shape, and includes an angled surface 81a, and a flat surface 81b extending in a plane generally perpendicular to the axis of the stem 80. The angled surface 81a helps the securing projection 81 feed into the first passage 76 when pulled therethrough. Once out of the first passage 76, the flat surface 81b abuts against the outer side of the valve body 72 at the cavity 78, and prevents the securing projection 81 from being able to pass back into the first passage 76.

When the valve plug 73 is separate from the valve body 72 and is in an un-deformed, relaxed state shown in Fig. 14, the length of the stem 80 (h in Fig. 14) is less than the length of the first passage 76 (1₂ in Fig. 14). Therefore, when the securing projection 81 is located within the cavity 78, the stem 80 is stretched from the un-deformed state and is under tension. This tension pulls the sealing head 79 into sealing contact with the surface of the recess 75, reinforcing the integrity of the airtight seal. This force is in addition to any air pressure within the football that acts on the sealing head 79 to urge it into sealing engagement with the surface of the recess 75. This tension also helps ensure the airtight seal is maintained during use, so that impacts on the football will not affect the integrity of the seal. In such sealing engagement, the sealing head 79 seals closed the first and second passages 76, 77. Additionally, the flat surface 81b of the securing projection 81 seals against the cavity 78, further making an airtight closed seal across the first passage 76.

The sealing head 79 is configured with a corresponding shape to the recess 75. In the exemplary embodiment shown, the sealing head 79 and recess 75 are shaped in a generally conical configuration, although other cooperating configurations of sealing head 79 and recess 75 are intended to fall within the scope of the invention.

Once the valve plug 73 is secured within the valve body 72 as described above, the tail 82 is cut from the remainder of the valve plug, just below the securing head 79, as indicated by dashed line ‘C’ in Fig. 14. The valve 71 is thereby in the assembled state as shown in Fig. 15.

-15As with the valves of the previous embodiments, in use, the valve 71 is bonded to an inflatable bladder 8 with an inner face of the flange 74 bonded around a hole 9 in the bladder 8, and the bladder 8 is disposed within an outer casing 10. The end of the second passage 77 on the outer side of the valve body 72 is aligned with a hole 11 in the outer casing 10. The valve body 72 may include a tubular extension 83 at the end of the second passage 77 on the outer side of the body 72 which may extend through the hole 11 in the outer casing 10, as shown in Figs. 15 and 16, so that the end of the tubular extension 83 lies flush, or slightly protruding beyond the outer casing 10. However, in an alternative embodiment within the scope of the invention, the tubular extension 83 may not extend beyond the outer casing 10, or the tubular extension maybe omitted entirely.

In use, when the football is inflated, an inflation needle 12 is inserted through the second passage 77 and into the recess 75. The needle 12 deflects the sealing head 79 away from the surface of the recess 75 to allow air to be pumped into the bladder 8.

Once the football is inflated, the needle 12 is withdrawn and the tension in the stem 80 pulls the sealing head 79 back into sealing engagement with the cooperating surface of the recess 75. This seals closed the second passage 77, as well as further sealing the first passage 76.

It can be seen from Figs. 15 and 16 that the outer casing 10 covers the securing head 81 and cavity 78, so only the open end of the second passage 77 is exposed through the hole 11 in the outer casing 10. This may advantageously prevent damage to the valve plug 73 during use of the football.

Referring to Fig. 17, a valve 91 of a seventh embodiment of the invention is shown, and is a variant of the valve 71 of the sixth embodiment, and so like features retain the same reference numerals and will not be described in detail again.

The difference in the valve 91 of the seventh embodiment is that the valve 91 is configured to be applied to an inflatable object where the inflation aperture is provided at the seam 13 of panels of the outer casing 10, rather than through an aperture 11 in a panel of the outer casing 10. As such, the flange 74 includes a channel 84 to receive the folded panel edges at the seam 13 of the outer casing 10. The tubular extension 83 at the end of the second passage 77 on the outer side of the body 72 is disposed within the channel 84 and is accessible through a gap in the seam 13. The tubular extension 83

-ι6may lie flush, or slightly protruding beyond the outer casing 10, or slightly recessed within the outer casing 10, as shown in Fig. 17.

Referring to Figs. 18 to 20c, a valve 101 of an eighth embodiment is shown, and shares a 5 number of features in common with the valve 61 of the fifth embodiment shown in Figs.

and 13. The valve 101 of the eighth embodiment comprises a stem 102 with a hollow bore 104 and a radially-extending flange 103, and an arcuate slit 105 at the distal end of the stem 102 where sealing flaps 106 lie in contact and close the distal end.

The opposite end of the stem 102 to the slit 105 includes an opening 107 for insertion of an inflation needle. The flange 103 includes a circular wall 108 extending around the stem 106. The wall 108 may advantageously extend from the flange surface by the same distance as the stem 102 (shown in solid lines in Fig. 19), or may extend further from the flange 103 than the stem 102 (shown in dashed lines in Fig. 19), such that the height of the wall 108 (indicated as ‘hi’ in Fig. 19) is greater than the height of the stem

102 (indicated as ‘h₂’ in Fig. 13) from the flange 103 by a difference is shown as dimension ‘d’ in Fig. 19.

The wall 108 may advantageously provide the protection benefits described previously.

The variations in step length and associated benefits are as described previously with respect to the valve 61 of the fifth embodiment. As with the valve 61 of the fifth embodiment, the stem 102 is formed integrally with the wall 108 and the outer sealing flap 106 extends from the wall 108 at each end of the flap 106, and extends around the inner sealing flap 106. The inner sealing flap 106 is formed as a solid body extending from the wall 68, and is separated from the outer sealing flap 106 by the arcuate slit 105. This configuration provides the advantages described above with reference to the valve 51 of the fourth embodiment.

The valve 101 of the eighth embodiment also includes a biasing element 109 which is configured to bias the outer sealing flap 106 into contact with the inner sealing flap 106, which in the exemplary embodiment shown comprises a curved spring wall 109 formed integrally with the wall 108 and with the outer sealing flap 106. Variations of the biasing element 109 of the eight embodiment are as described above with respect to the biasing element 69 of the fifth embodiment, so will not be repeated.

-17A difference with the valve 101 of the eighth embodiment is that the stem 102 only extends from one side of the flange 103, or alternatively put, the stem 102 is shorter, and the flange 103 lies flush with one end of the flange, as can be seen in Fig. 19. The valve 101 comprises two sections bonded together, a base portion 110a which comprises the stem 102 and flange 103, and associated features described above, and separate top plate 110b which is bonded to the flange 103 of the base portion 110a. The top plate 110b shown in Figs. 18 and 19 comprises a disc 111 having an inflation tube 112 extending from one side. A pair of arched support portions 113 are spaced from each other to define a gap 114, and are positioned such that the inflation tube 112 is disposed in the gap 114. The inflation tube 112 includes a hollow bore 115 that is aligned with the opening 107 and bore 104 of the stem 102, as can be seen in Fig. 19.

The flange 103 is of a smaller diameter than the flange 63 of the fifth embodiment, as it is only required for bonding the base portion 110a to the top plate 110b. In use, the components of the ball and bladder are secured to the top plate 110b. The valve 101 is bonded to an inflatable bladder 8 with an outer face of the disc 111 bonded around a hole 9 in the bladder 8, and the bladder 8 is disposed within an outer casing 10 with the end of the inflation tube 112 aligned with a hole 11 in the outer casing 10. This arrangement can be seen in Fig. 19.

In the embodiment shown in Fig. 19, the inflation tube 112 extends beyond the height of the arched support portions 113 from the disc 111 such that when the valve 101 is incorporated into ball, the outer surface of the outer casing 10 is flush with the top of the inflation tube 112. The gap 114 between the arched support portions 113 may be configured to receive seam of panels of the outer casing 10, as described above with respect to the valve 91 of the seventh embodiment, rather than through an aperture 11 in a panel of the outer casing 10. The gap 114 may therefore receive the folded panel edges at the seam of the outer casing 10 with the inflation tube 112 accessible through a gap in the seam 13.

In use, when the ball is inflated, an inflation needle is inserted through the opening hollow bore 115 of the top plate 110b, through the opening 107 and hollow bore 104 of the stem 102 and the outer sealing flap 106 is moved apart from the inner sealing flap 106. Thereafter, operation is as described previously with respect to the fifth embodiment of the invention.

-18An advantage of the valve 101 of the eighth embodiment of the invention is that different configurations of top plate nob can be bonded to a universal base portion 110a, to suit the particular application, for example, which sports ball the valve 101 is to be used in. Exemplary embodiments of alternative configurations of top plates 110b are shown in cross-section in Figs 20A - 20C.

Fig. 20A shows a top plate nob which maybe used in rugby balls, and is as shown in Figs. 18 and 19. The arched support portions 113 and gap 114 maybe configured to support and receive the outer casing 10 seam as described above. Fig. 20B shows an embodiment which may be used with other balls in which the inflation tube 112 is to project through an aperture in the outer casing 10. Here, the disc 111 omits the arched support portions, but includes the inflation tube 112. Fig. 20C may be used is balls where no inflation tube is to project through the outer casing 10, and only an inflation aperture 115 is provided to receive an inflation needle. Any of the top plates of Figs.

20A - 20C may be of varying shapes within the scope of the invention, and may be oval, round or other shaped. For example, an oval top plate 110b may be suitable for a rugby ball, whereas a round top plate 110b maybe suitable for a football.

Referring to Figs. 21 and 22, a valve 121 of a ninth embodiment is shown, and shares a number of features in common with the valve 61 of the fifth embodiment shown in Figs. 12 and 13, and with the valve 101 of the eighth embodiment. The valve 121 of the ninth embodiment comprises a stem 122 with a hollow bore 124 and a radially-extending flange 123, and an arcuate slit 125 at the distal end of the stem 122 where sealing flaps 126 lie in contact and close the distal end.

The flange 123 includes a circular wall 128 extending around the stem 126. The wall 128 may advantageously extend from the flange 123 surface by the same distance as the stem 122 (shown in solid lines in Fig. 21), or may extend further from the flange 103 than the stem 122 (shown in dashed lines in Fig. 21),with the heights of the wall 128 (‘hf), the stem 122 (‘h₂’) and difference Cd’), as well as the various other features and advantages thereof, as described previously with respect to the valve 61 of the fifth embodiment.

A difference with the valve 121 of the ninth embodiment is that the stem 122 only extends from one side of the flange 123 (as with the eighth embodiment), and also that an opposite end of the stem 122 to the slit 125 includes a recess 127. Furthermore, the

-19valve 121 comprises two sections bonded together; a base portion 130a which comprises the stem 122 and flange 123, and associated features described above, and separate top plate 130b which is bonded to the flange 123 of the base portion 130a. The top plate 130b shown in Figs. 21 and 22 comprises a disc 131 having an inflation seal 132 extending from one side. The inflation seal 132 comprises a domed projection which extends into the recess 127, and includes as slit 133 at an end of the projection. The top plate 130b is made of a resilient material such that the slit can be parted to allow for insertion of an inflation needle through the slit and into the bore 124.

In use, the components of the ball and bladder are secured to the top plate 110b, similarly to as described above with respect to the valve 101 of the eighth embodiment, and so description thereof will not be repeated.

In use, when the ball is inflated, an inflation needle is inserted through the slit 133 of the inflation seal 132, through the recess 127 and hollow bore 124 of the stem 122 and the sealing flaps 126 are moved apart. Once inflated, the slit 133 of the inflation seal 132 is resiliently held closed which advantageously serves to prevent ingress of dirt and moisture into the recess 127 and other interior valve components. This can help prolong the life of the valve 121 by preventing degradation of the valve 121 and deterioration of its sealing ability. The inflation seal 132 also advantageously provides a secondary air-seal, further enhancing the overall air-sealing capability of the valve 121 and preventing air leakage, ensuring the football remains inflated to the desired internal pressure for longer. As such, the valve 121 of the ninth embodiment comprises a primary valve seal by primary seal elements, provided by the sealing flaps 126, and a secondary valve seal by secondary seal elements, provided by the inflation seal 132.

This dual-seal configuration advantageously provides the benefits described above. It will be appreciated that this configuration of top plate 130b may be provided to the valves of any of the embodiments of the invention described previously to help towards achieving the same dual-sealing advantages described above.

Referring now to Figs. 23 to 26B, a valve 141 of a tenth embodiment is shown, and shares a number of features in common with the valve 71 of the sixth embodiment shown in Figs. 14 to 16. The valve 141 of the tenth embodiment comprises a valve body 142, a valve plug 143 (including a sealing head 149, a stem 150, and a securing projection 151), a flange 144, a recess 145 at an inner side of the body 142 to receive the sealing head 149, first and second passages 146,147 and a cavity 148, as described

- 20 previously with the sixth embodiment, so will not be described in detail again. The valve 141 is bonded to an inflatable bladder and secured within an outer casing as described previously with respect to the valve 71 of the sixth embodiment.

A difference with the valve 141 of the tenth embodiment is that rather than a tubular extension 83, the valve includes a cavity 153 at the end of the second passage 147 on the outer side of the body 142. Furthermore, similarly to the valve 121 of the ninth embodiment, the valve 141 comprises two sections bonded together, a base portion 154a which comprises the valve body 142, flange 144 and associated features described above, and separate top plate 154b which is bonded to the flange 144 of the base portion 154a.

The top plate 154b is shown in Figs. 23 and 24 and comprises a disc 155 having an inflation tube 156 extending from one side and an inflation seal 157 comprising a domed projection extending from the opposite side, coaxial with the inflation tube 156. The inflation seal 157 extends into the cavity 153 and includes a slit 158 at an end of the projection. The hollow bore of the inflation tube 156 and the slit 158 of the inflation seal 157 are configured to be aligned with the second passage 147 of the valve body 142 when the top plate 154b is correctly aligned and secured to the base portion 154a. The top plate 154b is made of a resilient material such that the slit 158 can be parted to allow for insertion of an inflation needle through the slit 158 and into the second passage 147.

A further difference of the valve 141 of the tenth embodiment over the valve 71 of the sixth embodiment is that the sealing head 149 has a hollow portion 159 to render the head cup-shaped. This can help make the sealing head more flexible to conform to the recess 145 of the valve body 142, and also require less material to manufacture. The increased surface area of the cup shaped sealing head 149 may further enhance the effect of air pressure within the football acting on the sealing head 149 to urge it into sealing engagement with the surface of the recess 145, sealing closed the first and second passages 146,147.

A yet further difference of the valve 141 of the tenth embodiment over the valve 71 of the sixth embodiment is that the sealing head 149 and recess 145 of the valve body 142 are respectively configured such that an outer circumferential part of the sealing head 149 lies in contact with the surface of the recess 145, whereas an inner circumferential

- 21 portion of the sealing head 149, proximate the stem 150 and first passage 146, is slightly spaced from the surface of the recess 145, to define a space 160. That is, the respective contact surfaces of the valve body 142 recess 145 and sealing head 149 are not entirely complimentary or correspondingly shaped, such that first respective sections are correspond and are complimentary, and second respective sections do not correspond and are not complimentary so as to define a space 160 between the uncomplimentary second respective sections. Advantageously the first respective sections comprise an outer circumferential part of the sealing head 149/valve body surface, and the second respective sections comprise an inner circumferential part of the sealing head 149/valve body surface. Advantageously the inflation passage 147 is aligned with the first respective sections. This is shown most clearly in the enlarged view of Fig. 25. This is shown for illustration in Figs. 24 and 25, and the space 160 maybe defined when the valve plug stem 150 is under tension, or only when the valve plug 143, including sealing head 149 and stem 150, are not under tension and are in an undeflected, relaxed state.

In the exemplary embodiment shown, the space 160 is created by the angle of the slope of the surface of the recess 145 changing between inner and outer circumferential regions of the recess 145, although the same effect could be achieved by the angle of the contact surface of the sealing head 149 changing between inner and outer circumferential regions of the sealing head.

In use, the components of the ball and bladder are secured to the top plate 154b, similarly to as described above with respect to the valves 101,121 of the eighth and ninth embodiments, and so description thereof will not be repeated.

In use, when the ball is inflated, an inflation needle is inserted through the slit 158 of the inflation seal 157, through the cavity 153 and through the second passage 147 and into the recess 145. The needle deflects the sealing head 149 away from the surface of the recess 145 to allow air to be pumped into the bladder. Once the football is inflated, the needle is withdrawn and the tension in the stem 150 pulls the sealing head 149 back into sealing engagement with the cooperating surface of the recess 145. This seals closed the second passage 147, as well as the first passage 146.

An advantageous effect of the above-described configuration of the sealing head 149 and recess 145 is that, as the sealing head 149 is brought into contact with the surface of the recess 145, the sealing head 149 initially seals across the second passage 147, whilst being spaced from the inner peripheral region of the recess 145 by the space 160.

- 22 Further deflection of the sealing head 149 into the recess 145 (for example, by tension provided by the stem 150 and/or air pressure acting on the sealing head 149) forces the sealing head 149 further into sealing engagement across the second passage 147. The first passage is effectively sealed by the securing projection 151 as described previously, as well as by the inflation seal 157 as described below. This enhances the airtight seal provided by the valve 141. Tension may pull the sealing head 149 to deflect into the space 160, which would further force the outer circumferential part of the sealing head 149 to seal against the end of the second passage 147 within the recess 145. Whether the sealing head deflects into the space 160 may be dependent upon the configuration and material of construction of the valve plug 143.

With the inflation needle withdrawn, the slit 158 of the inflation seal 157 is resiliently held closed which advantageously serves to prevent ingress of dirt and moisture into the cavity 153 and other interior valve components, with the advantageous benefits as described previously, including dirt ingress prevention and provision of a secondary air-seal. The valve 141 of the tenth embodiment thereby also comprises a primary seal, provided by the sealing head 149 on the surface of the recess 145, and a secondary seal, provided by the inflation seal 157.

A valve 171 of an eleventh embodiment of the invention is shown in Figs. 27 and 28, and is similar to the valve 141 of the tenth embodiment, and so like features retain the same reference numerals and will not be described again.

A difference with the valve 171 of the eleventh embodiment is that a circumferential bead 172 extends around the surface of the hollow portion 159 of the cup-shaped sealing head 149 of the valve plug 143. This bead 172 serves as a reinforcing element to retain the sealing head 149 in its intended, regular shape, which is circular in the exemplary embodiment shown. This function is achieved as, particularly circular, resilient objects such as O-rings, have a tendency to resiliently return to their original circular shape after a deflection force is removed. This may advantageously ensure an even air-seal around the sealing head 149 and prevent deformation of the sealing head 149, and potential seal compromise, after repeated deflections during ball inflation.

This may also provide a sealing head 149 strengthening element. The bead 172 may be integrally formed with the valve plug 143, such as by injection moulding, or maybe a separate element bonded to the sealing head 149. The bead may extend partially or entirely around the hollow portion 159, and advantageously extends around a section of

-23the hollow portion 159 that is aligned with the second passage 147. The bead 172 preferably extends around a part of the sealing head 149 that is radially further from the centre of the head than the position of the end of the second passage 147 (i.e. radially outboard of the second passage 147). This may advantageously help towards ensuring the sealing head 149 is retained in a sealing configuration over the end of the second passage 147. The bead 172 may advantageously extend around the radially distal circumferential portion of the sealing head 149. The bead 172 is advantageously formed of a resiliently deformable material, preferably an elastic material.

A valve 181 of the twelfth embodiment of the invention is shown in Figs. 29 and 30, and is similar to the valve 71 of the sixth embodiment, and like features have reference numerals that increment in a corresponding order to the reference numerals of Fig. 14 and Fig. 15. As with the valve 71 of the sixth embodiment, the valve 181 of the twelfth embodiment includes a valve body 182 and a valve plug 183. The valve body 182 includes a flange 184, a recess 185, first and second passage passages 186,187 and a cavity 188 at the end of the first passage 186 on the outer side of the body 182. The valve plug 183 comprises a sealing head 189, a stem 190, a securing projection 191 including an angled surface 191a and a flat surface 191b, and a tail 192. The valve body 72 may include a tubular extension 193 at the end of the second passage 187.

The assembly and function of the valve 181 of the twelfth embodiment, including the assembly, in use, with an inflatable bladder 8 and outer casing 10, is similar to that of the valve 71 of the sixth embodiment, and so detailed description thereof will not be repeated. However, a difference between the two valves is that the valve 181 of the twelfth embodiment additionally includes a peripheral skirt or flange 194 extending around the circumference of the valve head 189. The skirt 194 is advantageously relatively thin, and may extend around the distal end of the valve head, remote from the securing portion 191, as shown in Figs. 29 and 30.

When the valve 181 is assembled, the skirt 194 lies flush against the adjacent flat upper surface of the valve body 182. The skirt 194 thereby provides an additional sealing function for the sealing head 189 by providing an additional sealing surface against the valve body i83.The skirt 194 provides greater contact surface area between the sealing head 189 (and combined skirt 194) and valve body 183 when the valve 181 is in the closed position shown in Fig. 30. The greater contact surface area enhances the sealing effect, which helps towards the valve 181 maintaining air pressure within a ball.

-24Although in the twelfth embodiment shown in Figs. 29 and 30, the valve body 182 includes a flat upper surface against which the skirt 194 rests, the invention is not limited to this particular configuration and, in an alternative embodiment, the valve body 182 may include a depression or further recess in its upper surface into which the skirt 194 is received. Such depression or further recess may be shaped corresponding to the shape of the skirt 194 and maybe circular. This may advantageously further enhance the sealing function of the skirt 194.

Although in the twelfth embodiment shown in Figs. 29 and 30, the skirt 194 is shown 10 extending radially outward perpendicularly to the axis of the stem 190, the skirt 194 may alternatively be formed such that, in a relaxed state, it is angled downwards towards the end of the stem 190 that includes the securing projection 191. Such an alternative configuration of skirt 194 is shown in broken lines in Fig. 29. Such an embodiment may advantageously help enhance the sealing effect as the skirt 194 would be biased into contact against the valve body 182 when the valve 181 is assembled, as shown in Fig. 30.

The skirt 194 may be integrally formed with the sealing head 189, which may facilitate ease and reduce cost of manufacture. Alternatively, the skirt 194 may be a separate component bonded to the sealing head, which may allow flexibility of manufacture (i.e. both skirted and non-skirted valve plugs 183 may be produced with the skirt 194 added later if required), and may also allow different materials to be used for the skirt 194 than for the sealing head 189. Yet further, the skirt 194 maybe embedded within, during injection moulding, the sealing head 189. Again, this may facilitate different materials to be used for the skirt 194 than for the sealing head 189, whilst allowing a single tool and single moulding step in manufacture to be used to produce the valve plug 183.

Although the skirt 194 is shown as an additional feature that maybe provided as a modification of the valve 71 of the sixth embodiment, it will be appreciated that such a skirt 194 may equally be provided with the valves 91,141,171 of the seventh, tenth and eleventh embodiments of the invention respectively shown in Figs. 17, 23 - 26B and 27 - 28. The variations of configuration of skirt 194 and assembly with sealing head 189 described above may equally be applicable to such further variations of these valve embodiments.

-25The top plates 130b, 154b of the ninth, tenth and eleventh embodiments may comprise the varying shapes and configurations, suitable for different ball applications, as per the top plate 110b of the eighth embodiment described above.

The valve plugs 73,143 of the valves 71,141 of the sixth and tenth embodiments may be interchangeable for use between the respective valves.

It is intended that the valves of the first to sixth embodiments of the invention could equally be configured to include the feature of the channel 84 of the valve 91 of the seventh embodiment of the invention, within the scope of the invention, in order that they may be configured in a ball or other inflatable object in which the inflation aperture is provided at the seam 13 of panels of the outer casing 10, rather than through an aperture 11 in a panel of the outer casing 10.

In the exemplary embodiments of valves 31, 51, 61,101,121 of second, fourth, fifth, eighth and ninth embodiments described above, the wall 38, 58, 68,108,128 is shown and described as being of a greater or equal height (measured from the surface of the flange 33,53, 63,103,123) than stem 32, 52, 62,102,122. However, the invention is not intended to be limited to such configuration and in alternative variations within the scope of the invention, the respective wall 38, 58, 68,108,128 may be of a lesser height than the stem 32,52, 62,102,122 and still provide a degree of protection as described.

The embodiments of valves described herein may advantageously be made from a resilient elastic material, such as rubber. In addition, the valves may be made from materials of different hardnesses. For example, in the embodiments of valves 31,51, 61, 101,121 of second, fourth, fifth, eighth and ninth embodiments described above, the walls 38,58, 68,108,128 maybe formed of a first material, such as rubber, and the stem 32,52, 62,102,122 may be made from a second material which is softer than the first material. As such, the harder walls 38, 58, 68,108,128 could afford enhanced protection of the stem 32, 52, 62,102,122 in use and during transport of the valves before manufacture into a football, or during deflated packaging and transport of the football, yet the stems 32, 52, 62,102,122 of the softer first material may provide enhanced sealing properties.

In all embodiments of valve described herein, a portion of the valve may be provided with a layer of fabric to assist in bonding of the valve to the bladder 8 and/or outer

- 26 casing 10. Such fabric may be provided on one or both sides of the flange. Such fabric may be bonded to the flange, or may be integrally formed with the valve. For example, the valve may be injection moulded with the fabric in place in the mould, to be embedded within the valve.

In order to address various issues and advance the art, the entirety of this disclosure shows by way of illustration various embodiments in which the claimed invention(s) maybe practiced and provide for a valve for inflatable device, apparatus or object. The advantages and features of the disclosure are of a representative sample of embodiments only, and are not exhaustive and/or exclusive. They are presented only to assist in understanding and teach the claimed features. It is to be understood that advantages, embodiments, examples, functions, features, structures, and/or other aspects of the disclosure are not to be considered limitations on the disclosure as defined by the claims or limitations on equivalents to the claims, and that other embodiments may be utilised and modifications may be made without departing from the scope of the disclosure. Various embodiments may suitably comprise, consist of, or consist essentially of, various combinations of the disclosed elements, components, features, parts, steps, means, etc. In addition, the disclosure includes other inventions not presently claimed, but which may be claimed in future.

-2η-

Claims (42)

1. Claims

   l. A valve for use in an inflatable object, the valve comprising a tubular portion having a hollow bore along at least a part of its length, and a flange

   5 extending outwardly from the tubular portion, wherein an end of the tubular portion is closed by cooperating first and second resilient sealing members respectively having first and second sealing surfaces disposed in sealing contact with each other, and wherein the first and second sealing surfaces are curved and define an arcuate slit where the first and second sealing io surfaces are in contact.
2. 2. A valve according to claim l wherein the first and second sealing surfaces share a common radius of curvature.

   15
3. 3. A valve according to claim 1 or claim 2 wherein the first sealing member is configured so as to be biased into contact with the second sealing member.
4. 4. A valve according to any of claims 1 to 3 wherein a peripheral wall extends from the flange and surrounds the tubular portion.
5. 5. A valve according to claim 4 wherein the peripheral wall surrounds an end of the tubular portion which comprises the closed end.
6. 6. A valve according to claim 4 or claim 5 wherein the peripheral wall extends 25 substantially perpendicularly from the flange and in a direction substantially parallel to an axis of the tubular portion.
7. 7. A valve according to any of claims 4 to 6 wherein the wall extends a distance from the flange at least equal to the distance between the flange and the

   30 closed end of the tubular portion.
8. 8. A valve according to claim 7 wherein the wall extends a distance from the flange which is greater than the distance between the flange and the closed end of the tubular portion.

   - 28
9. 9- A valve according to any of claims 4 to 8 wherein the first and second sealing members are formed integrally with, and extend from the peripheral wall.
10. 10. A valve according to any of claims 4 to 9 further comprising a biasing element

    5 configured to bias the first sealing member into sealing contact with the second sealing member.
11. 11. A valve according to claim 10 wherein the biasing element is formed integrally with the peripheral wall.
12. 12. A valve according to claim 10 or claim 11 wherein the biasing element is formed integrally with the first sealing member.
13. 13. A valve according to any of claims 10 to 12 wherein the biasing element

    15 comprises a resilient wall section extending from the peripheral wall to the first sealing member.
14. 14. A valve according to any preceding claim wherein the first and second sealing members are formed integrally with, and are extensions of, the wall of the 20 tubular portion.
15. 15. A valve according to any preceding claim comprising a reinforcing element at least partially surrounding the closed end of the tubular portion.

    25
16. 16. A valve according to claim 15 wherein the reinforcing element comprises a band entirely surrounding the closed end of the tubular portion.
17. 17. A valve for use with an inflatable object, the valve comprising:

    a body having first and second opposite sides, a recess formed in the first

    30 side of the body, a first passage extending from the recess through the body to the second side, and a second passage extending through the body from the recess to the second side;

    a plug having a head located within the recess, a stem extending from the head through the first passage, and an anchoring portion at the opposite

    35 end of the stem from the head, located on the second side of the body;

    wherein the head seals the end of the second passage at the first side of

    -29the body.
18. 18. A valve according to claim 17 wherein the head seals the end of the first passage at the first side of the body.
19. 19. A valve according to claim 17 or claim 18 wherein the plug is made of a resilient material and the stem is in light tension to pull the head against the recess.
20. 20. A valve according to any of claims 17 to 19 wherein the anchoring portion is

    10 located in a cavity on the second side of the body.
21. 21. A valve according to any of claims 17 to 20 wherein the anchoring portion tapers towards the distal and of the plug remote from the head, and includes a flat portion extending substantially perpendicularly from the stem, which abuts

    15 the second side of the valve body.
22. 22. A valve according to any of claims 17 to 21 wherein the recess is substantially conical and the plug head is correspondingly shaped to conform to at least a portion of the conical shape of the recess.
23. 23. A valve according to any of claims 17 to 22 wherein the first and second passages extend substantially in parallel through the body.
24. 24. A valve according to any of claims 17 to 23 further comprising a peripheral
25. 25 flange extending outwardly from the valve body.

    25. A valve according to any of claims 17 to 24 wherein an open end of the second passage on the second side of the valve body defines an inflation aperture, and wherein the second side of the body includes a channel within which the

    30 inflation aperture is located.
26. 26. A valve according to any of claims 17 to 25 wherein the head includes a cavity such that the head is cup-shaped.
27. 27. A valve according to claim 26 wherein the head includes a reinforcing bead

    35 around at least a portion of the inside surface of the cavity.

    -3028. A valve according to claim 27 wherein the bead is circular and extends around the entire circumference of the cavity of the head.
28. 29. A valve according to claim 27 or claim 28 wherein the bead extends around a

    5 part of the head that is radially equally or further spaced from the centre of the head than the position of the end of the second passage in the recess.
29. 30. A valve according to any of claims 27 to 29 wherein the bead extends around a radially outermost peripheral portion of the head.
30. 31. A valve according to any of claims 17 to 30 wherein the head of the plug includes a peripheral skirt which extends outward from the head around the perimeter of the head and which lies flush against a surface of the valve body.
31. 32. A valve according to claim 31 wherein the skirt extends around a distal end of the head.
32. 33. A valve according to claim 31 of claim 32 wherein the skirt extends radially

    20 outward from the head.
33. 34. A valve according to claim 31 or claim 32 wherein the skirt extends at an angle from the head relative to an axis of the stem, and angled towards the anchoring portion.
34. 35. A valve according to any of claims 31 to 34 wherein the first side of the body includes a depression surrounding the recess and the skirt is received within the depression.

    30 36. A valve according to any of claims 17 to 35 wherein a first section of the surface of the recess is shaped correspondingly to a first section of the facing surface of the head, and wherein a second section of the surface of the recess is shaped out of correspondence with a second section of the facing surface of the head.

    -3137· A valve according to claim 36 wherein a space is defined between the second section of the surface of the recess and the second section of the facing surface of the head.

    5 38. A valve according to claim 36 or claim 37 wherein the first circumferential section of the surface of the recess lies at a different angle to the second circumferential section of the surface of the recess.
35. 39. A valve according to any of claims 36 to 38 wherein the respective first sections

    10 of the surface of the recess and of the head comprise an outer circumferential section of the surface of the recess and of the head part, and the respective second circumferential sections of the surface of the recess and of the head comprise an inner circumferential section of the surface of the recess and of the head.
36. 40. A valve according to any of claims 36 to 39 wherein the end of the second passage at the first side of the body is disposed at the first section of the surface of the recess.

    20
37. 41. A valve according to any preceding claim wherein the valve comprises a cover member with an aperture therein bonded to the flange or valve body, and with an inflation aperture respectively aligned with the hollow bore of the tubular portion or the second passage.

    25
38. 42. A valve according to claim 41 wherein the sealing surfaces of the plug head and recess comprise a primary valve seal, and the cover member comprises a secondary valve seal.
39. 43. A valve according to claim 42 wherein the secondary valve seal comprises a

    30 domed projecting element with a slit formed therein.
40. 44. A valve according to any of claims 41 to 43 wherein the cover member comprises a pair of spaced arched support members, and the aperture is disposed in a gap defined between the arched support members.

    -3245· A valve according to any of claims 41 to 44 wherein the cover member comprises an inflation tube in fluid communication with the aperture.
41. 46. An inflatable object comprising an inflatable bladder, an outer layer, and a valve

    5 according to any preceding claim for inflation of the bladder within the outer layer.
42. 47. An inflatable object according to claim 46, comprising one of a rugby football or a soccer football.

    Intellectual

    Property

    Office

    Application No: GB1706676.2