Expansible hollow core

• US 3,296,059 A
• Filed: 03/18/1963
• Issued: 01/03/1967
• Est. Priority Date: 03/18/1963
• Status: Expired due to Term

• Current Assignee: Benjamin W. Schwindt
• Original Assignee: Benjamin W. Schwindt
• Inventors: Schwindt, Benjamin W.
• Application Number:
  US04/265,935
• Time in Patent Office: 1,387 Days
• US Class Current: 428/12
• CPC Class Codes: E04C 2/36 spaced apart by transversely-placed strip material, e.g. honeycomb panels honeycomb or other core members for layered products B32B
• CPC Class Codes: Y10T 428/234 including elements cooperating to form cells
• CPC Class Codes: Y10T 428/24025 Superposed movable attached layers or components
• CPC Class Codes: Y10T 428/24149 Honeycomb-like
• CPC Class Codes: Y10T 428/24231 At opposed marginal edges
• CPC Class Codes: Y10T 428/24711 Plural corrugated components
• CPC Class Codes: Y10T 428/24769 Cellulosic

Claims

1. IN COMBINATION, A FRAME HAVING A PRESELECTED WIDTH AND A HOLLOW LADER-TYPE CORE DISPOSED IN SAID FRAME, SAID CORE COMPRISING A PLURALITY OF STRIPS OF CORRUGATED PAPER BOARD PRESELECTED ONES OF WHICH HAVE A WIDTH SUBSTANTIALLY EQUAL TO SAID PRESELECTED WIDTH, AND HINGE-LIKE HOLDING MEANS AT THE ENDS OF THE STRIPS FOR HOLDING EACH STRIP TO AN ADJACENT STRIP TO FORM A SINGLE CELL WHICH EXTENDS BETWEEN THE BOUNDARIES OF SAID FRAME, SAID HINGE-LIKE HOLDING MEANS COMPRISING CONNECTING PIECES CONNECTED BETWEEN ADJACENT ONES OF STRIPS OF CORRUGATED PAPER BOARD AND BEING FOLDABLE ALONG SAID CONNECTIONS, EACH OF SAID CONNECTING PIECES HAVING A FOLD LINE INTERMEIDIATE SAID CONNECTIONS WHEREBY EACH CONNECTING PIECES IS FOLDABLE ALONG ITS LINES OF CONNECTION TO ADJACENT ONES OF SAID STRIP AND ALONG SAID INTERMEDIATE FOLD LINE, SAID CONNECTING PIECES BEING FORMED OF A METERIAL THAT IS THE SAME AS THE CORRUGATED PAPER BOARD.