1. A method of manufacturing an optical probe for use in ophthalmic procedures, comprising:
positioning a cannula around a distal portion of a ferrule, wherein an optical fiber extends at least partially through the ferrule towards an optical element disposed within a distal portion of the cannula; and
coupling the cannula to the ferrule by applying laser energy to the cannula.
2. The method of claim 1, further comprising:
applying a bonding material to at least one of the cannula and the ferrule.
3. The method of claim 1, wherein positioning the cannula includes:
aligning the optical fiber and the optical element for optical communication.
4. The method of claim 1, wherein coupling the cannula to the ferrule includes:
generating engaged deformations in the cannula and the ferrule.
5. The method of claim 4, wherein generating engaged deformations includes:
generating an interlock feature that restricts longitudinal displacement of the cannula relative to the ferrule.
6. The method of claim 4, wherein generating engaged deformations includes:
generating a recess in the ferrule.
7. The method of claim 6, wherein generating engaged deformations includes:
generating an inward radial protrusion in the cannula.
8. The method of claim 7, wherein coupling the cannula to the ferrule includes:
indirectly engaging the protrusion of the cannula to the recess of the ferrule through a bonding material disposed between the cannula and the ferrule.
9. The method of claim 7, wherein coupling the cannula to the ferrule includes:
directly engaging the protrusion of the cannula to the recess of the ferrule.
10. The method of claim 4, further comprising:
selecting at least one of a wavelength, a power, a power density, a pulse pattern, a peak irradiance, a pulse duration, and a spot size of the laser energy suitable to generate the engaged deformations.
11. The method of claim 4, wherein coupling the cannula to the ferrule includes:
applying the laser energy around a perimeter of the cannula.
12. The method of claim 11, wherein:
the laser energy is applied intermittently around the perimeter of the cannula.
13. The method of claim 11, wherein:
the laser energy is applied continuously around the perimeter of the cannula.
14. An ophthalmic surgical apparatus, comprising:
an optical probe having
a ferrule;
a cannula disposed around a distal portion of the ferrule, the cannula and the ferrule coupled together by engaged deformations in the cannula and the ferrule; and
an optical fiber positioned at least partially within the optical probe, the optical fiber configured to receive a light from a light source and guide the light to an optical element positioned within a distal portion of the cannula.
15. The apparatus of claim 14, wherein:
the cannula is positioned coaxially relative to the ferrule.
16. The apparatus of claim 14, further comprising:
a bonding material disposed between the ferrule and the cannula, and configured to couple the ferrule and the cannula.
17. The apparatus of claim 14, wherein:
the deformations are laser generated deformations.
18. The apparatus of claim 14, wherein:
the deformations define an interlock feature restricting longitudinal displacement of the cannula relative to the ferrule.
19. The apparatus of claim 14, wherein:
the engaged deformations include a recess in the ferrule.
20. The apparatus of claim 19, wherein:
the engaged deformations include an inward radial protrusion in the cannula.
21. The apparatus of claim 20, wherein:
the inward radial protrusion of the cannula indirectly engages the recess of the ferrule through a bonding material disposed between the cannula and the ferrule.
22. The apparatus of claim 20, wherein:
the inward radial protrusion of the cannula directly engages the recess of the ferrule.
23. The apparatus of claim 20, wherein:
an opening extends from an outer surface of the cannula through the inward radial protrusion.
24. The apparatus of claim 14, wherein:
the engaged deformations are intermittently disposed around a perimeter of the cannula.
25. The apparatus of claim 14, wherein:
the engaged deformations are continuously disposed around a perimeter of the cannula.
26. An ophthalmic surgical system, comprising:
a light source configured to generate a light; and
an optical probe in optical communication with the light source, the optical probe including
a ferrule;
a cannula disposed around a distal portion of the ferrule, the cannula and the ferrule coupled together by engaged deformations in the cannula and the ferrule; and
an optical fiber positioned at least partially within the optical probe, the optical fiber configured to receive the light from the light source and guide the light to an optical element positioned within a distal portion of the cannula.
The claims below are in addition to those above.
All refrences to claims which appear below refer to the numbering after this setence.
I claim:
1. A viscous coupling having first and second rotatable parts (11, 12) in the form of a hub and a housing for the transmission of torque between said first and second rotatable parts (11, 12) caused by a positive speed differential between said first and said second of said rotatable parts (11, 12), which are supported inside one another, and are rotatable relative to one another around a common longitudinal axis (A), and which form a sealed annular chamber (17) which is filled with a highly viscous fluid in which are disposed first coupling plates (19) non-rotatably connected to said first rotatable part (11), and second coupling plates (20) non-rotatably connectable to said second rotatable part (12), said first and second coupling plates being arranged alternately in the longitudinal direction, and a freewheeling assembly (23) comprising two rings (24, 26) which, if torque flows in a first direction at a positive speed differential between said first rotatable part (11) and said second rotatable part (12), has a locking effect in both directions of rotation of said two rings (24, 26), at least above a relative rotational acceleration, and which, if torque flows in a second direction at a negative speed differential between said first and second rotatable parts (11, 12), has an unlocking effect in both directions of relative rotation of said first and second rotatable parts (11, 12), said freewheeling assembly being effective between a selected one (11) of said first and second rotatable parts (11, 12) and a plate carrier (22) which carries at least part of the coupling plates (20) of said selected one of said first and second rotatable parts (11, 12).
2. A viscous coupling according to claim 1, wherein said first rotatable part (11) is the hub, and said second rotatable part (12) is the housing.
3. A viscous coupling according to claim 1, wherein said freewheeling assembly (23) comprises locking members (28) between said two rings (24, 26), said locking members (28) being held in a cage (29) which is brakeable relative to said selected one (11) of said first and second rotatable parts (11, 12) and which, when braked, causes said freewheeling assembly to be blocked.
4. A viscous coupling according to either claim 1, 2 or 3, wherein said cage (29) is connected to a brake plate (30) which is positioned inside said sealed annular chamber (17) and which adjoins a radial wall of the other one (12) of said first and second rotatable parts (11, 12).
5. A viscous coupling according to either claim 1, 2, or 3, wherein said locking members (28) are each supported between spring means relative to said selected one (11) of said first and second rotatable parts (11, 12), said spring means being operative to set said locking members (28) to a central position relative to the said selected rotatable part (11), in which central position said freewheeling assembly (23) is released.
6. In a driveline of a vehicle with a permanently driven first axle and a second axle which is driven when required, the improvement comprising: a viscous coupling having first and second rotatable parts (11, 12) in the form of a hub and a housing for the transmission of torque between said first and second rotatable parts (11, 12) caused by a positive speed differential between said first and said second of said rotatable parts (11, 12), which are supported inside one another, and are rotatable relative to one another around a common longitudinal axis (A), said first and second rotatable parts (11, 12) being connected, respectively, to an input end and an output end in a driveline for the second axle; a sealed annular chamber (17) formed by said first and second rotatable parts (11, 12) and filled with a highly viscous fluid in which are disposed first coupling plates (19) non-rotatably connected to the first one of said rotatable parts, and second coupling plates (20) non-rotatably connected to the second one of the rotatable parts, said first and second coupling plates being arranged alternately in the longitudinal direction, the improvement comprising: a freewheeling assembly (23) comprising two rings (24, 26) which, if torque flows in a first direction at a positive speed differential between said first rotatable part (11) and said second rotatable part (12), has a locking effect in both directions of rotation of said rings (24, 26), at least above a relative rotational acceleration, and which, if torque flows in a second direction at a negative speed differential between said first and second rotatable parts (11, 12), has an unlocking effect in both directions of rotation of said rings (24, 26), said freewheeling assembly being effective between a selected one (11) of said first and second rotatable parts (11, 12) and a plate carrier (22) which carries at least part of the coupling plates (20) of said selected one of said first and second rotatable parts (11, 12), wherein said rotatable part (12) comprising the plate carrier (22) switchable via the freewheeling unit (23) is connected to the output end.
7. The improvement according to claim 6, wherein said freewheeling assembly (23) comprises locking members (28) between said two rings (24, 26), said locking members (28) being held in a cage (29) which is brakeable relative to said selected one (11) of said first and second rotatable parts (11, 12) and which, when braked, causes said freewheeling assembly to be blocked.
8. The improvement according to claim 7, wherein said cage (29) is connected to a brake plate (30) which is positioned inside said sealed annular chamber (17) and which adjoins a radial wall of the other one (12) of said first and second rotatable parts (11, 12).
9. The improvement according to claim 6, wherein said locking members (28) are each supported between spring means relative to said selected one (11) of said first and second rotatable parts (11, 12), which spring means sets said locking members (28) to a central position relative to said selected one (11) of said first and second rotatable parts (11, 12), in which central position said freewheeling assembly (23) is released.
10. A viscous coupling comprising:
(a) first and second rotatable parts (11, 12) in the form of a hub and a housing for the transmission of torque between said first and second rotatable parts (11, 12) caused by a positive speed differential between said first and said second of said rotatable parts (11, 12), which are supported inside one another, and which are rotatable relative to one another around a common longitudinal axis (A);
(b) an annular chamber (17) formed by said first and second rotatable parts (11, 12) and filled with a highly viscous fluid;
(c) first coupling plates (19) non-rotatably connected to one of said first and second rotatable parts (11, 12), and second coupling plates (20) non-rotatably connected to the other of said first and second rotatable parts (11, 12), said first and second coupling plates being arranged alternately in the longitudinal direction within said annular chamber; and
(d) a freewheeling assembly (23) comprising two rings (24, 26) which, if torque flows in a first direction at a positive speed differential between said first rotatable part (11) and said second rotatable part (12), has a locking effect in both directions of rotation of said rings (24, 26), at least above a relative rotational acceleration, and which, if torque flows in a second direction at a negative speed differential between said first and second rotatable parts (11, 12), has an unlocking effect in both directions of rotation of said rings (24, 26), said freewheeling assembly being effective between a selected one (11) of said first and second rotatable parts (11, 12) and a plate carrier (22) which carries at least part of the coupling plates (20) of said selected one of said first and second rotatable parts (11, 12).
11. A viscous coupling according to claim 10, wherein said first rotatable part (11) is a hub, and said second rotatable part (12) is a housing.
12. A viscous coupling according to claim 10, wherein said freewheeling assembly (23) comprises locking members (28) between said two rings (24, 26), said locking members (28) being held in a cage (29) which is brakeable relative to said selected one (11) of first and second rotatable parts (11, 12) and which, when braked, causes said freewheeling assembly to be blocked.
13. A viscous coupling according to either claim 10, 11 or 12, wherein said cage (29) is connected to a brake plate (30) which is positioned inside said sealed annular chamber (17) and which adjoins a radial wall of the other one (12) of said first and second rotatable parts (11, 12).
14. A viscous coupling according to either claim 10, 11 or 12, wherein said locking members (28) are each supported between spring means relative to said selected one (11) of said first and second rotatable parts (11, 12), said spring means being operative to set said locking members (28) to a central position relative to said selected one (11) of said first and second rotatable parts (11, 12), in which central position the freewheeling assembly (23) is released.