US3812563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a composite bearing structure
Assignee: JPI Transportation Products Inc
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Filing: 1972-11-29
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Granted: 1974-05-28
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Expires: 1992-11-29
Abstract
Abstract A method of forming a composite bearing structure including a metallic substrate having a bearing material adherently bonded thereto is provided which comprises the steps of treating the surface of a metallic substrate to remove undesirable substances therefrom, applying a layer of metallic bonding material to at least a part of the treated surface of the substrate, covering at least a part of the bonding material with a layer of bearing material, heating the so-formed article to a temperature sufficient to activate both the bonding material and the bearing material, and densifying both the bearing material and the bonding material while causing the metallic substrate to be reduced in thickness to thereby cause the bearing material to become bonded to the bonding layer which, in turn, is bonded to the metallic substrate.
Inventors
- 👤 M Toaz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:19
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/14; B; B22; B22F; B22F7/00; B22F7/02; B22F7/04; B22F7/06; B22F7/08; B32; B32B; B32B15/00; B32B15/01; B32B15/017; B22F2998/00; B22F2998/10; F16C2220/00; F16C2220/20; F16C2220/60; F16C2220/66; F16C2223/00; F16C2223/02; F16C2223/08; F16C2223/30
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
13 words
The method of claim 1 wherein said metallic substrate is fabricated from steel.
Claim 2
Dependent Claim
34 words
The method of claim 1 wherein said metallic substrate is a low carbon steel which consists essentially of, in weight percent, up to 0.10 percent carbon with the remainder being iron plus incidental impurities.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein the metallic substrate has an average thickness of about 0.065 inch before being reduced in thickness.
Claim 4
Dependent Claim
23 words
The method of claim 1 wherein said treating of the surface of said metallic substrate includes the removal of surface grease found thereon.
Claim 5
Dependent Claim
14 words
The method of claim 5 wherein trichloroethylene is utilized to remove said surface grease.
Claim 6
Dependent Claim
24 words
The method of claim 1 wherein said treating of the surface of said metallic substrate includes the removal of surface oxide film found thereon.
Claim 7
Dependent Claim
14 words
The method of claim 1 wherein said surface oxide film is removed by sanding.
Claim 8
Dependent Claim
21 words
The method of claim 1 wherein the surface of said metallic substrate is roughened before said bonding material is deposited thereon.
Claim 9
Dependent Claim
35 words
The method of claim 1 wherein said treating of the surface of said metallic substrate is accomplished by first treating said surface to remove grease therefrom and then treating it to remove oxide film therefrom.
Claim 10
Dependent Claim
23 words
The method of claim 1 wherein the bonding material is selected from the group of metals consisting of aluminum, copper and alloys thereof.
Claim 11
Dependent Claim
24 words
The method of claim 11 wherein said bonding material is sized such that substantially all of it passes through a 60 U.S. mesh screen.
Claim 12
Dependent Claim
25 words
The method of claim 1 wherein said bearing material is an alloy selected from the group consisting of aluminum-lead base alloys and copper-lead base alloys.
Claim 13
Dependent Claim
45 words
The method of claim 1 wherein: a. the bonding material is a metal selected from the group consisting of aluminum and aluminum base alloys; b. the bearing material is an aluminum-lead base alloy; and c. the activation temperature ranges from about 650*F to about 950*F.
Claim 14
Dependent Claim
45 words
The method of claim 1 wherein: a. the bonding material is a metal selected from the group consisting of copper and copper base alloys; b. the bearing material is a copper-lead base alloy; and c. the activation temperature ranges from about 600*F to about 1,000*F.
Claim 15
Dependent Claim
18 words
The method of claim 1 wherein said substrate is reduced approximately up to about 30 percent in thickness.
Claim 16
Dependent Claim
45 words
The method of claim 1 wherein: a. the bonding material is a metal selected froM the group consisting of aluminum and aluminum base alloys; b. the bearing material is an aluminum-tin base alloy; and c. the activation temperature ranges from about 450*F to about 950*F.
Claim 17
Dependent Claim
36 words
The method of claim 1 wherein: a. the bonding material is an aluminum-silicon base alloy; b. the bearing material is an aluminum-lead base alloy; and c. the activation temperature ranges from about 650*F to about 900*F.
Claim 18
Independent Claim
157 words
A method of applying an adherent layer of bearing material to a metallic substrate having a surface coating of wrought aluminum thereon comprising: a. treating the surface of the metallic substrate to which the adherent layer of bearing material is to be applied to remove undesirable substances therefrom; b. covering at least a part of the aluminum coated surface of the substrate with a layer of powdered bearing material; c. heating the substrate having the bearing material thereon to a predetermined temperature sufficient to activate the bearing material by softening said bearing material and thereby increasing the ductility of said material whereby oxide film on said activated material is broken up by subsequent mechanical working; and d. immediately thereafter densifying the bearing material to near wrought density while causing the metallic substrate to be reduced in thickness to thereby cause the bearing material to become adherently bonded to the substrate by means of the aluminum bonding layer.
References Cited (Backward Citations)
US3104135A
Cited
US3445909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |