Tube squaring machine

- Donato L. Ricci
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Description

FIG. 1 is a right side elevation of a tube squaring machine showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right end view thereof; and,

FIG. 6 is a left end view thereof.

Referenced Cited
U.S. Patent Documents
D288167 February 10, 1987 Urspruch
D383960 September 23, 1997 Sandford et al.
4319503 March 16, 1982 Saine et al.
4739682 April 26, 1988 Birkestrand
5197362 March 30, 1993 Birkestrand
5619893 April 15, 1997 Pierce
5671646 September 30, 1997 Sandford et al.
5711197 January 27, 1998 Ohmi et al.
5941145 August 24, 1999 Marshall et al.
5960686 October 5, 1999 Bonow
Patent History
Patent number: D427499
Type: Grant
Filed: Nov 22, 1999
Date of Patent: Jul 4, 2000
Assignee: Donato L. Ricci (Hager City, WI)
Inventors: Donato L. Ricci (Hager City, WI), Brent Place (Red Wing, MN)
Primary Examiner: Martie K. Holtje
Law Firm: Nikolai, Mersereau & Dietz, P.A.
Application Number: 0/114,215
Classifications
Current U.S. Class: D 8/68; D8/69
International Classification: 0803;