Claims:We Claim

1. A sealing assembly (10) for sealing a fuel injector, said sealing assembly (10) comprising:
a capsule (12) for storing a fuel injector, said capsule (12) comprising an outer surface and an inner surface; characterized in that
a sleeve (14) integrally formed within the inner surface of said capsule (12), wherein said sleeve (14) comprises a plurality of serrations (16) that are formed along an inner surface of said sleeve (14);
a cap (18) comprising a plurality of serrations (20) that are defined along its outer surface, said cap (18) inserted within said sleeve (14) such that the plurality of serrations (20) of said cap (18) are adapted to mesh with the plurality of serrations (16) that are formed along the inner surface of said sleeve (14).

2. The sealing assembly (10) for sealing a fuel injector in accordance with Claim 1 wherein said cap (18) is inserted unidirectionally within said sleeve (14) to facilitate meshing the plurality of serrations (20) of said cap (18) with the plurality of serrations (16) of said sleeve (14), and wherein said cap (18) once inserted cannot be withdrawn from within said sleeve (14).

3. The sealing assembly (10) for sealing a fuel injector in accordance with Claim 1 wherein at least one of said capsule (12) and said cap (18) are each manufactured from a polypropylene material.

4. The sealing assembly (10) for sealing a fuel injector in accordance with Claim 1 wherein said sleeve (14) is manufactured from a thermoplastic material
, Description:Field of the invention
[0001] This invention relates to a sealing assembly, and more specifically to a sealing assembly for sealing a fuel injector therein.

Background of the invention
[0002] CN 103285452 A describes a plastic pre-filling and sealing injector which comprises an outer sleeve, a push rod, a piston and a protection cap, wherein the outer sleeve is made from polypropylene or cyclo-olefin polymers; an injection needle connector with an inner thread is arranged at the front end of the outer sleeve; a piston is mounted at the front part of the push rod and is in sliding fit with the inner wall of the outer sleeve; an outer thread is arranged on the protection cap; and the outer thread is connected with the inner thread of the injection needle connector on the outer sleeve in a matched way. The injector is reasonable in structure, convenient to operate and use, safe and effective, and can be used as both a medicinal liquid storage device and an injector; the protection cap is in threaded fit with the injector, so that the falling phenomenon is effectively prevented and the sealing performance is good; and the injector is low in price, difficult to break, convenient to transport, suitable for serving as a high-dose container and particularly suitable for occasions of animal drug injection, high-dose drug injection and the like.

Brief description of the accompanying drawing
[0003] Figure 1 illustrates a schematic diagram of a sealing assembly for sealing a fuel injector in one embodiment of the invention.

Detailed description of the embodiments
[0004] Figure 1 illustrates a sealing assembly 10 for sealing a fuel injector. The sealing assembly 10 comprises a capsule 12 for storing a fuel injector, the capsule 12 comprising an outer surface and an inner surface. A sleeve 14 is integrally formed within the inner surface of the capsule 12, wherein the sleeve 14 comprises a plurality of serrations 16 that are formed along an inner surface of the sleeve 14. A cap 18 comprising a plurality of serrations 20 that are defined along its outer surface, the cap 18 inserted within the sleeve 14 such that the plurality of serrations 20 of the cap 18 are adapted to mesh with the plurality of serrations 16 that are formed along the inner surface of the sleeve 14.

[0005] The sealing assembly 10 comprises a capsule 12 for storing a fuel injector. When a seal of the capsule 12 is broken by twisting the capsule 12 about the seal, the fuel injector may be withdrawn from the sealing assembly 10. The capsule 12 comprises a first portion 15 comprising a first diameter and a second portion 17 comprising a second diameter, wherein the second diameter is smaller than the first diameter. The capsule 12 comprises an outer surface and an inner surface. A sleeve 14 is integrally formed within an inner surface of the capsule 12. More specifically, the sleeve 14 is formed along with the capsule 12 during a casting process of the capsule 12 in a mold such that the sleeve 14 is integrally cast with the capsule 12 and cannot be separated from the capsule 12. The sleeve 14 comprises a plurality of serrations 16 that are formed along an inner surface of the sleeve 14. More specifically, the plurality of serrations 16 that are formed along the inner surface of the sleeve 14 comprises a saw tooth arrangement that extends from a top portion of the sleeve 14 to a bottom portion of the sleeve 14. A cap 18 comprising a plurality of serrations 20 are defined along its outer surface. The cap 18 is inserted within the sleeve 14 such that the plurality of serrations 20 of the cap 18 are adapted to mesh with the plurality of serrations 16 that are defined along the inner surface of the sleeve 14.

[0006] In the exemplary embodiment, the cap 18 is inserted unidirectionally within the sleeve 14 to facilitate meshing the plurality of serrations 20 of the cap 18 with the plurality of serrations 16 of the sleeve 14. More specifically, when the cap 18 is inserted unidirectionally within the sleeve 14, the plurality of serrations 20 that are defined on the outer diameter of the cap 18 slides over the plurality of serrations 16 that are defined on the inner diameter of the sleeve 14. As the sleeve 14 is manufactured from a thermoplastic material, it is rigid and not pliable. However, since the cap 18 is manufactured from a polypropylene material, the cap 18 is flexible and therefore pliable when the plurality of serrations 20 that are defined on the outer diameter of the cap 18 slides over the plurality of serrations 16 that are defined on the inner diameter of the sleeve 14. Therefore, the plurality of serrations 20 that are defined on the outer diameter of the cap 18 deform to slide over the plurality of serrations 16 that are defined on the inner diameter of the sleeve 14. Therefore, once the cap 18 is inserted within the sleeve 14, the teeth that are formed on the outer diameter of the cap 18 mesh with the teeth that are formed on the inner diameter of the sleeve 14, thereby preventing the cap 18 from being removed from within the sleeve 14. Therefore, once the cap 18 is inserted within the sleeve 14, the cap 18 cannot be removed from within the sleeve 14. In an exemplary embodiment, the capsule 12 and the cap 18 are each manufactured from a polypropylene material.

[0007] A working of the sealing assembly 10 for sealing a fuel injector is described as an example. When the cap 18 is inserted within the capsule 12, the plurality of serrations 20 that are defined on the outer diameter of the cap 18 are inserted within the plurality of serrations 16 that are defined on the inner diameter of the sleeve 14. Due to the pliable nature of the cap 18, the plurality of serrations 20 of the cap 18 slides over the plurality of serrations 16 of the sleeve 14. The cap 18 is completely inserted within the sleeve 14 to facilitate sealing the capsule 12. Once the cap 18 is completely inserted within the sleeve 14, the plurality of serrations 20 that are defined on the outer surface of the cap 18 meshes with the plurality of serrations 16 that are defined in the inner surface of the sleeve 14. Due to the meshing of the plurality of serrations 20 that are defined on the outer surface of the cap 18 meshes with the plurality of serrations that are defined in the inner surface of the sleeve 14, the cap 18 is prevented from being removed from within the sleeve 14. Therefore, once the cap 18 is inserted within the sleeve 14, the cap 18 cannot be removed from within the sleeve 14.

[0008] It must be understood that the embodiments explained above are only illustrative and do not limit the scope of the disclosure. Many modifications in the embodiments with regard to dimensions of various components are envisaged and form a part of this invention. The scope of the invention is only limited by the scope of the claims.