# US 7,070,673 B2 · Method for repairing loose molded-in bushings

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- Number: US 7,070,673 B2
- Document ID: US7070673B2
- Status: Granted
- Kind: B2
- Application number: 10/188,566
- Filed: 2002-07-02
- Published: 2004-01-08
- Granted: 2006-07-04
- Earliest claimed: 2002-07-02
- Assignees: United Technologies Corporation
- Inventors: Daniel M. Stadtlander
- Web page: https://patentgrep.com/patent/US7070673B2

## CPC

- C09J 5/00: Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- B29C 65/544: {by suction}
- B29C 66/474: {said single elements being substantially non-flat}
- B29C 65/483: {Reactive adhesives, e.g. chemically curing adhesives}
- B29C 65/485: {Multi-component adhesives, i.e. chemically curing as a result of the mixing of said multi-components}
- B29C 65/542: {by injection}
- B29C 66/71: {characterised by the composition of the plastics material of the parts to be joined (welding bar compositions B29C65/125)}
- B29L 2031/737: {Articles provided with holes, e.g. grids, sieves (nets B29L2028/00)}
- C08L 63/00: Compositions of epoxy resins; Compositions of derivatives of epoxy resins
- C09J 2463/00: Presence of epoxy resin
- Y10T 156/18: Surface bonding means and/or assembly means with handle or handgrip
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The present invention relates to a method for bonding a component, such as a bushing, into a part, such as a panel. The method broadly comprises attaching a vacuum chamber to a surface of the part, seating the component into a slot in the part, and applying an adhesive material about a circumference of the component while drawing a vacuum in the vacuum chamber to allow the adhesive material to flow between the part and the component.

## Claims

### Claim 1

A method for bonding a component into a part comprising the steps of:
attaching a vacuum chamber to a first surface of said part where said component is seated in an opening in said part; and
applying an adhesive material about a circumference of said component along a second surface of said part opposed to said first surface while drawing a vacuum in said vacuum chamber to allow said adhesive material to flow between the part and the component.

### Claim 2 (depends on 1)

A method according to claim 1, further comprising cleaning a surface area around said component and allowing said surface area to dry.

### Claim 3 (depends on 1)

A method according to claim 1, wherein said adhesive material applying step comprises applying an epoxy containing adhesive material.

### Claim 4 (depends on 3)

A method according to claim 3, further comprising diluting said epoxy containing material with a solvent prior to said applying step.

### Claim 5 (depends on 1)

A method according to claim 1, further comprising locally fabricating said vacuum chamber from a pipe having an end cap and said attaching step comprising affixing said locally fabricated vacuum chamber to said part surface using a sealant material.

### Claim 6 (depends on 1)

A method according to claim 1, wherein said vacuum drawing step comprises drawing a 25 inch Hg minimum vacuum.

### Claim 7 (depends on 1)

A method according to claim 1, wherein said adhesive material applying step comprises applying said adhesive material using a syringe into a gap around said component and continuing to apply said adhesive material until adhesive material starts to appear out a back side of the component.

### Claim 8 (depends on 7)

A method according to claim 7, further comprising plugging a hole in said component with a plug tool while said vacuum is applied, discontinuing said vacuum, removing said plug tool after said vacuum is discontinued, and curing said adhesive material.

### Claim 9 (depends on 7)

A method according to claim 7, further comprising placing a plug tool into a hole in said component and rocking said component back and forth with said plug tool to break a seal between the part and the component to allow said adhesive material to flow.

### Claim 10

A method for bonding a bushing into a panel comprising the steps of:
attaching a vacuum chamber to a first surface of said panel were said bushing is seated in an opening in said panel; and
applying an adhesive material about a circumference of said bushing along a second surface of said panel opposed to said first surface while drawing a vacuum in said vacuum chamber to allow said adhesive material to flow between the panel and the bushing.
