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Bonding method

a technology of structural materials and bonding methods, applied in the direction of synthetic resin layered products, chemistry apparatus and processes, transportation and packaging, etc., can solve the problems of saving the military millions of dollars each year in repair costs, and achieve the effect of improving the strength of the bond and increasing the surface area of the metal to rubber bond

Inactive Publication Date: 2005-07-28
KENT HOWARD DANIEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0012] The invention described herein provides a method which increases the surface area of a metal to rubber bond, dramatically improving the strength of the bond. Here, a metal foam is attached to the metal structural element before the molten rubber is cast. The rubber absorbs into and becomes entangled in the metal foam, forming a superior bond and making it virtually impossible for the rubber to peel off. The result is a bond which may have hundreds of times the surface area as compared with the prior art primer method. This improved bonding method can be used for any bond between a structural material, such as metal, and a non-adherent material, such as an elastomer, epoxy or plastic. The metal foam may replace the prior art use of paint primer, or it may be used in combination with a primer

Problems solved by technology

Armored tank tracks made with this method will save the military millions of dollars each year in repair costs since the rubber pads on the track plates will last much longer.

Method used

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Embodiment Construction

[0027]FIG. 1 illustrates the bonding method described herein. A structural element 2 is secured to a non-adherent material 3 via the intermediary foam 1. Generally, the embodiments and applications of the inventions will have an intermediary foam 1 made of metal such as aluminum or steel, a structural element 2 made of aluminum or steel, and a non-adherent material 3 made of rubber or plastic. Here, the structural material 2 is attached to the foam 1. The part of the foam and structural material that will be in contact with the non-adherent material are coated with a primer to enhance adhesion such that the non-adherent material will not peel off of the structural material not covered by the foam. The non-adherent material 3 in a liquefied form is then poured over the foam and structural material which has been set in a mold or tooling. The combination of the structural element, foam and non-adherent material makes up the final composite 4.

[0028] The structural material 2 chosen de...

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Abstract

Tank treads, brake linings, rifles stocks, and other devices requiring the bonding of metal to non-adherent materials such as elastomers, non-elastomers, polymers, adhesives and slurried materials, with a layer of metal foam interposed between the metal. and the non-adherent material.

Description

RELATED PATENT APPLICATION [0001] This application is a continuation application of Ser. No. 09 / 598,181 filed Jun. 21, 2000, now U.S. Pat. No. 6,843,876 issued Jan. 18, 2005, which is a continuation application of Ser. No. 09 / 045,662 filed Mar. 20, 1998, now U.S. Pat. No. 6,080,493 issued Jun. 27, 2000.FIELD OF THE INVENTION [0002] This invention relates to methods of bonding structural materials, such as metal, to non-adherent materials, such as rubber. BACKGROUND OF THE INVENTION [0003] Rubber will not directly bond to metal. The metal must first be painted with primer prior to bonding the rubber. The primer provides a small surface area and low strength bond between the metal and the rubber. Thus, the weak link in the bond is merely the “strength” of the primer. This process is used in products as diverse as car bumpers, armored tank tracks and engine mounts. [0004] For example, armored tank tracks are made of metal machined to form the links and track plates which are fitted tog...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B32B33/00B62D55/26
CPCB22F7/006Y10T428/12562Y10T428/12479B62D55/275
Inventor KENT, HOWARD DANIEL
Owner KENT HOWARD DANIEL