Instrument for testing the burst strength of sheet material

- Testing Machines Inc.
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Description

FIG. 1 is a top, front, and right side perspective view of an instrument for testing the burst strength of sheet material showing our new design;

FIG. 2 is a top plan view;

FIG. 3 is a front elevational view;

FIG. 4 is a left side elevational view;

FIG. 5 is a right side elevational view; and

FIG. 6 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
377361 January 1888 Mill
3160002 December 1964 Lovette
3600940 August 1971 Schlegel
4735092 April 5, 1988 Kenny
Other references
  • Perkins' Testers by B. P. Perkins, 1983--all pages.
Patent History
Patent number: D315690
Type: Grant
Filed: May 11, 1989
Date of Patent: Mar 26, 1991
Assignee: Testing Machines Inc. (Amityville, NY)
Inventors: Walter F. Bachelder (Ft. Salonga, NY), John L. Sullivan (Kings Park, NY), Peter J. Fiore (Mt. Sinai, NY), Godfrey L. Hansen (Amityville, NY)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Antoine D. Davis
Attorneys: Anthony J. Casella, Gerald E. Hespos
Application Number: 7/350,533