Chair for concrete reinforcing

• US 3,378,981 A
• Filed: 04/28/1965
• Issued: 04/23/1968
• Est. Priority Date: 04/28/1965
• Status: Expired due to Term

• Current Assignee: Max Horne James
• Original Assignee: Max Horne James
• Inventors: MAX HORNE JAMES
• Application Number:
  US04/451,463
• Time in Patent Office: 1,091 Days
• US Class Current: 52/677
• CPC Class Codes: E04C 5/18 Spacers of metal or substantially of metal E04C5/168 takes precedence

Claims

1. A CHAIR FOR SUPPORTING LONGITUDINALLY EXTENDING CONCRETE REINFORCING MEMBERS, INCLUDING:

(A) A LOAD BEARING MEMBER HAVING A SUBSTANTIALLY PLANE LOWER FACE ADAPTED TO REST ON A SUBSTANTIALLY HORIZONTAL FLAT SURFACE TO THEREBY PREVENT SAID LOAD BEARING MEMBER FROM DIGGING INTO AND GOUGING THE FLAT SURFACE;

(B) A PAIR OF SUPPORT LEGS EXTENDING SUBSTANTIALLY VERTICALLY UPWARDLY FROM SAID LOAD BEARING MEMBER FOR SUPPORTING CONCRETE REINFORCING AT A PREDETERMINED ELEVATION RELATIVE TO SAID FLAT SURFACE;

(C) EACH OF SAID LEGS BEING IN SHEET FORM AND HAVING OPPOSITELY DISPOSED UPSTANDING SIDES AND AN UPPER EDGE INTERSECTING SAID UPSTANDING SIDES;

(D) EACH OF SAID LEGS HAVING A LATERALLY EXTENDING NOTCH FOR RECEIVING A LONGITUDINAL CONCRETE REINFORCING MEMBER, SAID NOTCH BEING DEFINED BY;

(1) A LONGITUDINALLY EXTENDING SHOULDER MEANS FOR LIMITING LATERAL INWARD MOVEMENT OF THE CONCRETE REINFORCING MEMBER;

(2) AN OPENING IN ONE OF SAID UPSTANDING SIDES OF EACH OF SAID LEGS FOR ENABLING THE CONCRETE REINFORCING MEMBER TO BE RECEIVED BY SAID NOTCH;

AND (E) A LATERALLY EXTENDING MANUALLY DEFORMABLE TAB FORMED IN THE PLANE OF THE SHEET FORMING EACH OF SAID LEGS ADJACENT EACH OF SAID NOTCHES;

AND EACH OF SAID TABS HAVING A HORIZONTAL LENGTH SUBSTANTIALLY GREATER THAN THE WIDTH OF EACH NOTCH SO THAT IT CAN BE MANUALLY BENT WITH A SINGLE BEND AROUND THE REINFORCING MEMBER IN THE NOTCH FOR EACH REINFORCING MEMBER IN ITS NOTCH AND PREVENTING MOVEMENT OF THE CHAIR RELATIVE TO THE REINFORCING MEMBER WHEN THE TABS ARE BENT AROUND THE REINFORCING MEMBER.