CAST REINFORCED HOUSING AND METHOD OF MAKING THE SAME

• US 3,745,854 A
• Filed: 08/25/1970
• Issued: 07/17/1973
• Est. Priority Date: 09/27/1969
• Status: Expired due to Term

• Current Assignee: Albert Haupt, Robert Haag, Siegfried Mayer
• Original Assignee: Albert Haupt, Robert Haag, Siegfried Mayer
• Inventors: Haag, Robert, Haupt, Albert, Mayer, Siegfried
• Primary Examiner(s): Myhre, Charles J.
• Assistant Examiner(s): Shoemaker, F. D.
• Application Number:
  US05/066,741
• Time in Patent Office: 1,057 Days
• Field of Search: 74/66R 164/111,98
• US Class Current: 74/606.00R
• CPC Class Codes: F01C 21/104 Stators; Members defining the outer boundaries of the working chamber
• CPC Class Codes: F04C 2/086 Carter
• CPC Class Codes: Y10T 29/49229 Prime mover or fluid pump making
• CPC Class Codes: Y10T 29/49242 Screw or gear type, e.g., Moineau type
• CPC Class Codes: Y10T 74/2186 Gear casings

Abstract

A cast reinforced housing comprises a cast peripheral housing wall defining an interior chamber for the components of an apparatus and preferably consisting of cast aluminum. At least one reinforcing embedment is provided in the wall and consists of a material having greater strength than the material of the wall, for example steel.

Claims

1. A housing, particularly for a gear-driven apparatus, comprising a cast peripheral housing wall having an interior surface defining inwardly of said surface an interior chamber for the components of said apparatus and consisting of a first material permitting manufacture of said wall as a casting;

and at least one embedment in said peripheral wall located in its entirety behind and outwardly of said interior surface and consisting of a second material having greater strength characteristics than said first material.

2. A housing as defined in claim 1, wherein said embedment is a sheet-metal insert.

3. A housing as defined in claim 1, wherein said embedment is a tubular member provided with opposite apertures intermediate its ends.

4. A housing as defined in claim 1, wherein said first material is cast aluminum, and wherein said second material is steel.

5. A housing as defined in claim 1, wherein said first material has a predetermined coefficient of thermal expansion, and wherein said second material has a coefficient of thermal expansion which at least approximates said predetermined coefficient.

6. A housing as defined in claim 1, said embedment being substantially completely embedded in said first material.

7. A housing as defined in claim 1, at least part of said embedment being substantially completely embedded in said first material.

8. A housing as defined in claim 1, wherein said second material has a greater tensile strength than said first material.

9. A housing, particularly for a gear-driven apparatus, comprising a cast peripheral housing wall defining an interior chamber for the components of said apparatus and consisting of a first material permitting manufacture of said wall as a casting;

and at least one reinforcing embedment in said wall and consisting of a second material having greater strength characteristics than said first material, said embedment being a tubular member slit along a generatrix thereof and having spaced ends, and having a flange-shaped portion provided on at least one of said ends.

10. A housing, particularly for a gear-driven apparatus, comprising a cast peripheral housing wall defining an interior chamber for the components of said apparatus and consisting of a first material permitting manufacture of said wall as a casting;

and at least one reinforcing embedment in said wall and consisting of a second material having greater strength characteristics than said first material, said wall and said embedment each having at least one registering aperture, with that in said embedment being at least equal in size and dimension to that in said wall.

11. A housing, particularly for a gear-driven apparatus, comprising a cast peripheral housing wall defining an interior chamber for the components of said apparatus and consisting of a first material permitting manufacture of said wall as a casting;

and at least one reinforcing embedment in said wall and consisting of a second material having greater strength characteristics than said first material, said embedment being provided with apertures filled by the material of said wall whereby the latter and said embedment are interlocked against forces tending to cause them to perform movements relative to one another.