Method of dent removal using a resonance damping vacuum blanket

• US 5,575,165 A
• Filed: 01/25/1995
• Issued: 11/19/1996
• Est. Priority Date: 01/25/1995
• Status: Expired due to Fees

• Current Assignee: Mcdonnell Douglas Corporation (The Boeing Co.)
• Original Assignee: Mcdonnell Douglas Corporation (The Boeing Co.)
• Inventors: Roseberry, Thomas J.
• Primary Examiner(s): Larson, Lowell A.
• Application Number:
  US08/377,958
• Time in Patent Office: 664 Days
• Field of Search: 72/56, 72/705
• US Class Current: 72/56
• CPC Class Codes: B21D 1/06 Removing local distortions
• CPC Class Codes: B21D 26/14 applying magnetic forces
• CPC Class Codes: Y10S 72/705 Vehicle body or frame straightener

Abstract

A repair kit for removing dents from a sheet of metal. The kit includes a sheet of damping material that is mounted to the surface of the metal. A vacuum can be pulled between the sheet metal and the damping material so that the surface of the damping material is secured to the metal. An electromagnetic device is inserted through an access hole in the damping device and energized to pull the dent out of the sheet metal. The damping material dampens any vibrational energy generated in the sheet metal and prevents "spring back" during the dent removal process.

Claims

1. A method for removing a dent from a sheet of metal, comprising the steps of:

a) mounting a sheet of damping material to the sheet metal;

b) coupling an electromagnetic device to the sheet metal; and

,

c) energizing said electromagnetic device to pull the dent out of the sheet metal, wherein said damping material dampens any vibrational energy and eliminates "spring back" generated by the pull of said electromagnetic device.

2. The method as recited in claim 1, further comprising the step of creating a vacuum between said damping sheet and the sheet metal to induce contact between said damping sheet and the sheet metal.

3. A repair kit that removes a dent from a skin of an airplane, comprising:

a sheet of damping material that is mounted to the skin of the airplane; and

,

an electromagnetic device that pulls the dent out of the skin.

4. The kit as recited in claim 3, wherein said damping material has an access hole that provides access to said electromagnetic device.

5. The kit as recited in claim 4, further comprising a sleeve located within said access hole.

6. The kit as recited in claim 3, further comprising a vacuum source that creates a vacuum between said damping sheet and the skin to induce contact between said damping sheet and the skin.

7. The kit as recited in claim 6, wherein said damping sheet has a plurality of ribs that define a plurality of channels in fluid communication with said vacuum source.

8. A method for removing a dent from a skin of an airplane, comprising the steps of:

a) mounting a sheet of damping material to the skin;

b) coupling an electromagnetic device to the skin; and

,

c) energizing said electromagnetic device to pull the dent out of the skin, wherein said damping material dampens any vibrational energy generated by the pull of said electromagnetic device.

9. The method as recited in claim 8, further comprising the step of creating a vacuum between said damping sheet and the skin to induce contact between said damping sheet and the skin.