Method of straightening and testing tubular elements

• US 2,884,986 A
• Filed: 04/28/1954
• Issued: 05/05/1959
• Est. Priority Date: 04/28/1954
• Status: Expired due to Term

• Current Assignee: Arthur P. Heldenbrand
• Original Assignee: Arthur P. Heldenbrand
• Inventors: Heldenbrand, Arthur P.
• Application Number:
  US03/426,138
• Time in Patent Office: 1,833 Days
• US Class Current: 72/302
• CPC Class Codes: B21D 3/00 Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts straightening of well casings in situ E21B; straightening rails or rail joints E01B31/08
• CPC Class Codes: G01N 2203/0274 Tubular or ring-shaped specimens
• CPC Class Codes: G01N 3/00 Investigating strength properties of solid materials by application of mechanical stress

Claims