Flexible tube having a variable stiffness bellows

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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
Classifications
Current U.S. Class: Pipe, Tubing Or Hose (D23/266)
International Classification: 2301;