Flexible tube having a variable stiffness bellows
Renaud September 11, 2
U.S. patent number D447,792 [Application Number D/125,826] was granted by the patent office on 2001-09-11 for flexible tube having a variable stiffness bellows. This patent grant is currently assigned to E. I. du Pont de Nemours and Company. Invention is credited to Michel Claude Renaud.
| United States Patent | D447,792 |
| Renaud | September 11, 2001 |
Flexible tube having a variable stiffness bellows
Claims
The ornamental design for a flexible tube having a variable stiffness bellows, as shown and described.
| Inventors: | Renaud; Michel Claude (Prangins, CH) |
|---|---|
| Assignee: | E. I. du Pont de Nemours and
Company (Wilmington, DE) |
| Family ID: | 22421599 |
| Appl. No.: | D/125,826 |
| Filed: | June 30, 2000 |
| Current U.S. Class: | D23/266 |
| Current CPC Class: | F16L11/121 20130101; F16L11/111 20130101 |
| Current International Class: | 2301 |
| Field of Search: | ;D23/266 ;138/118,121,173,177 |
References Cited [Referenced By]
U.S. Patent Documents
| D221078 | July 1971 | Seckel et al. |
| 1547431 | July 1925 | Mallory |
| 3050087 | August 1962 | Caplan |
| 3842865 | October 1974 | Torricelli |
| 6056018 | May 2000 | Renaud |
Description
FIG. 1 is a perspective view of a flexible tube having a variable stiffness bellows showing my new design;
FIG. 2 is a front view thereof, the rear being identical;
FIG. 3 is a side view thereof;
FIG. 4 is another embodiment thereof;
FIG. 5 is a front view thereof, the rear being a mirror image; and,
FIG. 6 is a side view.
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