1. A method for producing an endoscope, said endoscope comprising an endoscope head and an optic tube, said method comprising the steps of
providing said endoscope head,
providing said optic tube,
pushing a proximal end area of said optic tube into a distal end area of said endoscope head,
press-fitting said distal end area of said endoscope head with said proximal end area of said optic tube.
2. The method of claim 1, wherein said proximal end area of said optic tube is press-fitted by axial compressing.
3. The method of claim 1, wherein said optic tube is held in an axially fixed position during said press-fitting, and an axial force in direction to a distal end area of said optic tube is exerted on said proximal end area of said optic tube.
4. The method of claim 3, wherein said axial force is provided by a pressing tool.
5. The method of claim 1, wherein said distal end area of said endoscope head is provided on an inside of said endoscope head with a circumferential recess into which material of said optic tube flows with a form fit during said press-fitting.
6. The method of claim 5, wherein said circumferential recess is provided as a groove extending about a full circumference of said endoscope head.
7. The method of anyone of claim 1, wherein said distal end area of said endoscope head is provided with at least one circumferentially limited cavity into which material of said optic tube flows with a form fit during said press-fitting.
8. The method claim 1, wherein a proximal end of said optic tube is additionally widened in a trumpet shape.
9. The method of claim 1, wherein said distal end area of said endoscope head is adhesively bonded to said proximal end area of said optic tube after said press-fitting.
10. An endoscope, comprising an endoscope head and an optic tube, wherein a proximal end area of said optic tube is press-fitted with a distal end area of said endoscope head.
11. The endoscope of claim 10, wherein said distal end area of said endoscope head has, on an inner side of said endoscope head, a circumferential recess into which material of said optic tube engages with a form fit.
12. The endoscope of claim 11, wherein said circumferential recess is designed as a groove extending about a full circumference of said endoscope head.
13. The endoscope of claim 10, wherein said distal end area of said endoscope head has, on an inner side of said endoscope head, at least one circumferentially limited cavity into which material of said optic tube engages with a form fit.
14. The endoscope of claim 10, wherein a proximal end of said optic tube is widened in a trumpet shape.
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. A conduit opening at, at least two ends, comprising:
a conductive metal wire extending substantially to said at least two ends;
a non-conductive wire formed primarily of heat-expandable material extending substantially to said at least two ends;
wherein said non-conductive wire is calibrated to fill, at least 90% of a cross-section of said conduit upon reaching a threshold temperature.
2. The conduit of claim 1, wherein said non-conductive wire occupies less than 25% of said cross-section before expansion, and occupies the entire free space of said cross-section after expansion.
3. The conduit of claim 2 wherein all said wires of said conduit are braided around one other, including said non-conductive wire.
4. The conduit of claim 1, wherein said non-conductive wire surrounds said conductive wires in a non-expanded condition.
5. The conduit of claim 4, wherein said non-conductive wire is permanently affixed to at least one said conductive wire.
6. The conduit of claim 4 wherein said non-conductive wire fills at least a majority of a void between said conductive wire and said conduit.
7. The conduit of claim 1 wherein said cross-section extends along a substantial portion of a length of said conduit between said at least two ends.
8. The conduit of claim 1, wherein upon said threshold temperature being reached, said conductive wires are broken apart by said heat-expandable material.
9. A conduit opening at, at least two ends, comprising:
at least one conductive wire extending along an interior length thereof between said two ends;
a sleeve surrounding said conductive wire, extending between said at least two ends of said conduit;
a void defined between said sleeve and said conductive wire;
a volume of heat-expandable, non-conductive material injected into said void.
10. The conduit of claim 9 wherein said heat-expandable, non-conductive material, upon expansion, occupies at least 90% of the void extending substantially between said two ends.
11. The conduit of claim 9, wherein said non-conductive material ruptures said conductive wire upon exposure to heat exceeding a temperature threshold.
12. The conduit of claim 11, wherein said non-conductive material expands to rupture said sleeve.
13. The conduit of claim 12, wherein said fire-stop wire disables electrical connectivity of said electrical wire due to expansion of said fire-stop wire due to reaching a temperature above a threshold.
14. The conduit of claim 9, further comprising a resistance thermometer, wherein upon detection above a pre-defined threshold by said resistance thermometer, said non-conductive material is triggered to expand.
15. The conduit of claim 14, wherein upon said detection above a pre-defined threshold by said resistance thermometer, electric current to said at least one conductive wire is stopped.
16. The conduit of claim 14, wherein a first lower temperature determined by said resistance thermometer causes electric current supplied to electrical wire to be stopped and a second higher temperature causes said fire stop wire to expand.
17. A conduit extending between two portals, comprising:
a fire-stop wire extending substantially between said two portals;
an electrical wire extending through said two portals;
wherein said fire-stop wire disables electrical connectivity of said electrical wire due to expansion of said fire-stop wire due to reaching a temperature above a threshold.
18. The conduit of claim 17, wherein said temperature above a threshold is determined by a resistance thermometer.
19. The conduit of claim 18, wherein a first lower temperature determined by said resistance thermometer causes electric current supplied to electrical wire to be stopped and a second higher temperature causes said fire stop wire to expand and physically break said electrical wire, disabling electrical connectivity.