Composite shock resisting bodies

• US 3,874,855 A
• Filed: 11/21/1973
• Issued: 04/01/1975
• Est. Priority Date: 07/22/1969
• Status: Expired due to Term

• Current Assignee: Robert Legrand
• Original Assignee: Robert Legrand
• Inventors: Legrand, Robert
• Primary Examiner(s): Rutledge, L. Dewayne
• Assistant Examiner(s): Andrews, M. J.
• Application Number:
  US05/418,108
• Time in Patent Office: 496 Days
• Field of Search: 29/191.4,191.2,191,187.5 89/36R,36A,36Z 109/82,83,84
• US Class Current: 428/550
• CPC Class Codes: F41H 5/0421 Ceramic layers in combination with metal layers
• CPC Class Codes: F41H 5/0492 Layered armour containing hard elements, e.g. plates, spheres, rods, separated from each other, the elements being connected to a further flexible layer or being embedded in a plastics or an elastomer matrix
• CPC Class Codes: Y10S 428/923 Physical dimension
• CPC Class Codes: Y10T 428/12042 Porous component
• CPC Class Codes: Y10T 428/12104 Particles discontinuous
• CPC Class Codes: Y10T 428/12486 Laterally noncoextensive components [e.g., embedded, etc.]
• CPC Class Codes: Y10T 428/12576 Boride, carbide or nitride component
• CPC Class Codes: Y10T 428/12743 Next to refractory [Group IVB, VB, or VIB] metal-base component
• CPC Class Codes: Y10T 428/1275 Next to Group VIII or IB metal-base component
• CPC Class Codes: Y10T 428/31529 Next to metal

Abstract

A shock resisting composite product characterized by maximum resistance with minimum density formed from a wrought alloy of aluminum having cells formed therein which are packed with a hard material in a compact or fritted condition.

Claims

1. AN ARMOR PLATE COMPRISING A COMPOSITE PRODUCT CONSISTING OF A WROUGHT ALUMINUM ALLOY BODY, A PLURALITY OF CELLS DEFINED BY SAID BODY, AND A MATERIAL OF HIGH HARDNESS FILLING SAID CELLS SAID BODY PROVIDING A WALL PORTION SUBJECT TO IMPACT AND ADAPTED TO BE PIERCED WHILE ABSORBING A PORTION OF THE ENERGY OF THE IMPACT THE THICKNESS OF SAID WALL PORTION COMPRISING ABOUT 10 TO 30 PERCENT OF THE THICKNESS OF SAID BODY, SAID HARD MATERIAL AND THE REMAINDER OF SAID BODY ABSORBING THE BALANCE OF THE ENERGY OF THE IMPACT, SAID CELLS COMPRISING FROM 30 TO 50 PERCENT OF THE CROSS SECTIONAL AREA OF SAID BODY, AND SAID BODY DEFINING A THICK WALL PORTION OF THE SIDE OF SAID CELLS OPPOSITE SAID THIN WALL PORTION, THE THICKNESS OF SAID THICK WALL PORTION BEING FROM 40 TO 60 PERCENT OF THE THICKNESS OF SAID BODY.

2. A construction in accordance with claim 1 wherein said hard material comprises at least one of the members selected from the group consisting of an alloy of cobalt, chromium and tungsten, the nitrides and carbides of boron, tungsten and vanadium, steel, silica, magnesia and corundum.