1. An injection nozzle, having a nozzle body (12), a nozzle needle (18) that is displaceably supported in the nozzle body, a control chamber (20) that communicates with a fluid inlet (30) and a fluid outlet (34), and a valve element (40) that can open and close the fluid outlet (34), characterized in that the control chamber is defined laterally by a displaceable ring (24), which ring rests on the nozzle needle, and a closing spring (28) presses the ring against the nozzle needle in fluid-tight fashion.
2. The injection nozzle of claim 1, characterized in that the fluid inlet (30) has an inlet throttle (32), and the fluid outlet (34) has an outlet throttle (36).
3. The injection nozzle of claim 1 or 2, characterized in that the inlet throttle and the outlet throttle (32, 36) are accommodated in a valve block (22).
4. The injection nozzle of claim 1 or 2, characterized in that the inlet throttle (32) is accommodated in the ring (24).
5. The injection nozzle of claim 1 or 2, characterized in that the inlet throttle (32) is accommodated in the nozzle needle (18).
6. The injection nozzle of claim 5, characterized in that the nozzle body (12) has a first chamfer (45).
7. The injection nozzle of one of the foregoing claims, characterized in that in the control chamber (20), a protrusion (42) on which the nozzle needle (18) can rest is embodied on the valve block (22).
8. The injection nozzle of one of claims 1-6, characterized in that the protrusion (42) is embodied on the nozzle body (12), and that the ring (24) can rest on the protrusion.
9. The injection nozzle of one of the foregoing claims, characterized in that the ring (24) has a second chamfer (46), in the bearing region between the ring and the nozzle needle (18).
10. The injection nozzle of one of the foregoing claims, characterized in that the injection nozzle has a sealing element (48), in the bearing region between the ring (24) and the nozzle needle (18).
11. The injection nozzle of claim 10, characterized in that the sealing element (48) between the ring (24) and the nozzle needle (18) is a sealing ring.
12. The injection nozzle of claim 11, characterized in that the sealing ring (48) is supported in an annular groove (50).
13. The injection nozzle of claim 10, characterized in that the sealing element (48) between the ring (24) and the nozzle needle (18) is a sealing spring.
14. The injection nozzle of claim 13, characterized in that the sealing spring (48) is a cup spring.
15. The injection nozzle of one of the foregoing claims, characterized in that the ring (24) has a first annular portion (54) and a second annular portion (56).
16. The injection nozzle of claim 15, characterized in that the boundary face between the first and second annular portions (54, 56) is a spherical-segment face.
17. The injection nozzle of one of the foregoing claims, characterized in that the nozzle needle (18) comprises a first nozzle needle part (58) and a second nozzle needle part (60).
18. The injection nozzle of claim 17, characterized in that the first nozzle needle part (58) is embodied as a spherical segment and rests with positive engagement in the second nozzle needle part (60).
19. The injection nozzle of one of the foregoing claims, characterized in that a portion (12a) of the nozzle body and the valve block (22) are embodied in one piece.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1-19. (canceled)
20. An enclosure for housing and fastening a length of optical cable, said optical cable having an outer sheath and a flexible strength member, comprising a fixing element and a retention assembly, said fixing element being adapted for engaging a portion of the outer sheath and said retention assembly being adapted for fastening said flexible strength member,
wherein said fixing element and said retention assembly are independent from each other,
wherein said retention assembly comprises a reel and a reel seat, said reel being adapted to receive at least one turn of the flexible strength member wound thereon and to be inserted without rotation into the reel seat, and said reel seat being adapted for housing the reel, and
wherein said reel seat is shaped at least partially mating the shape of the reel.
21. The enclosure of claim 20, wherein said reel has a winding path for at least one turn of the flexible strength member.
22. The enclosure of claim 20, wherein said reel seat is laterally arranged with respect to said outer sheath fixing element.
23. The enclosure of claim 20, wherein said reel is adapted to be pressure pushed into the reel seat.
24. The enclosure of claim 20, wherein, in use, the reel can be rendered separated from the enclosure.
25. The enclosure of claim 20, further comprising a base and wherein the reel is integrally formed with the base and, in use, said reel can be separated from said base.
26. The enclosure of claim 25, wherein said reel is connected to a bottom wall of said base by at least a connecting surface which is breakable in order to render said reel a separated element from said enclosure.
27. The enclosure of claim 21, wherein said reel comprises a transverse passage for housing said flexible strength member.
28. The enclosure of claim 27, wherein said transverse passage comprises a channel extending along a diameter direction.
29. The enclosure of claim 27, wherein said transverse passage comprises a through hole extending along a diameter direction.
30. The enclosure of claim 20, wherein said reel comprises a cylinder body with a lateral surface and comprising a winding path on said lateral surface for said flexible strength member.
31. The enclosure of claim 30, wherein said reel seat comprises two facing planar lateral walls and two shaped walls designed to penetrate, at least partially, said path so that the reel is retained and the flexible strength member on the reel is prevented from unwinding.
32. The enclosure of claim 31, wherein one of said two shaped walls comprises a slit for passage of said flexible strength member.
33. The enclosure of claim 21, wherein said reel comprises a cylinder body with a lateral surface and spokes radially projecting from said lateral surface, wherein said winding path is provided between first spokes and second spokes.
34. The enclosure of claim 33, wherein said reel seat comprises a circular seat with cavities for housing the free ends of the spokes.
35. The enclosure of claim 34, wherein said reel seat comprises a stud for engaging a hole of said reel.
36. The enclosure of claim 20, wherein said reel is a harrow-shaped element with a lateral surface and comprising a winding path on at least a portion of a lateral surface thereof.
37. The enclosure of claim 36, wherein the harrow-shaped element has a truncated end and a shank.
38. The enclosure of claim 20, further comprising at least one flexible strength member deflecting wall for properly deflecting the flexible strength member from a longitudinal direction of an optical fiber to a direction deviating from such a direction toward a reel seat.