Flexible tube having a variable stiffness bellows
Latest E. I. du Pont de Nemours and Company Patents:
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.
Claims
The ornamental design for a flexible tube having a variable stiffness bellows, as shown and described.
Referenced Cited
U.S. Patent Documents
D221078 | July 1971 | Seckel et al. |
1547431 | July 1925 | Mallory |
3050087 | August 1962 | Caplan |
3842865 | October 1974 | Torricelli |
6056018 | May 2, 2000 | Renaud |
Patent History
Patent number: D447792
Type: Grant
Filed: Jun 30, 2000
Date of Patent: Sep 11, 2001
Assignee: E. I. du Pont de Nemours and Company (Wilmington, DE)
Inventor: Michel Claude Renaud (Prangins)
Primary Examiner: Robin V. Taylor
Application Number: 29/125,826
Type: Grant
Filed: Jun 30, 2000
Date of Patent: Sep 11, 2001
Assignee: E. I. du Pont de Nemours and Company (Wilmington, DE)
Inventor: Michel Claude Renaud (Prangins)
Primary Examiner: Robin V. Taylor
Application Number: 29/125,826
Classifications