Patent US3831258A successfully refreshed from Google Patents.
US3831258A
Expired / Lapsed
US
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Reinforced porous metal structure and manufacture thereof
Assignee: Union Carbide Corp
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Filing: 1971-12-20
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Granted: 1974-08-27
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Expires: 1991-12-20
Abstract
Abstract A reinforced porous metal structure, and manufacture thereof, comprising a porous metal material secured to a backing sheet having on at least a portion of its surface projected segments formed from the surface and being imbedded in the porous metal material. The reinforced porous metal structure substantially reduces spalling, tearing, and the delamination of the porous metal material when it is used in such applications as abradable seals, bearings and bearing retainers, and brake liners.
Inventors
- 👤 R Elbert
- 👤 E Farrier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:39
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/28; B; B22; B22F; B22F7/00; B22F7/02; B22F7/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49668; Y10T29/49677; Y10T29/4998; Y10T29/49982; Y10T29/49986; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12201; Y10T428/12333; Y10T428/12486
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
98 words
A method of producing a reinforced porous metal surfaced structure comprising the steps of: a. forming segments of a reinforcing backing sheet so as to cause them to project from the surface of said sheet; b. depositing particles of a metal powder onto the surface of said reinforcing backing sheet to a height sufficient to at least cover said projecting segments; and c. heating the powder coating in the as-deposited state on the reinforcing backing sheet to a temperature sufficient to sinter the particles of said metal powder so as to produce a reinforced porous metal surfaced structure.
Claim 2
Independent Claim
98 words
A method of producing a reinforced porous metal surfaced structure comprising the steps of: a. forming segments of a reinforcing backing sheet so as to cause them to project from the surface of said sheet; b. depositing particles of a metal powder onto the surface of said reinforcing backing sheet to a height sufficient to at least cover said projecting segments; and c. heating the powder coating in the as-deposited state on the reinforcing backing sheet to a temperature sufficient to sinter the particles of said metal powder so as to produce a reinforced porous metal surfaced structure.
Claim 3
Dependent Claim
53 words
A method according to claim 1 wherein, measured on a plane parallel to the surface of the reinforcing backing sheet, the area of the projection on said plane of the surface area of the projecting segments equals at least 5 percent of the surface area of the reinforcing backing sheet measured before forming.
Claim 4
Dependent Claim
31 words
The method according to claim 1 wherein the reinforcing backing sheet is at least 0.001 inch thick and is selected from the group consisting of metals, expanded metals, and metal alloys.
Claim 5
Dependent Claim
30 words
A method according to claim 2 wherein said projecting segments are disposed at an angle of between 45* and about 90* with the unformed surface of said reinforcing backing sheet.
Claim 6
Dependent Claim
54 words
A method according to claim 2 wherein said reinforcing backing sheet is a corrugated mesh sheet and wherein the ridges of said corrugation are the projecting segments, said ridges being at substantially a 90* angle with the anticipated direction of the force to be applied by an abrading member contacting the porous metal surface.
Claim 7
Dependent Claim
88 words
A sheet reinforced porous metal surfaced structure comprising a reinforcing backing sheet, at least a portion of the surface of which has been formed into projecting segments which project from the unformed portion said surface, and a porous metal material deposited on said reinforcing backing sheet to a height sufficient to at least cover and imbed said projecting segments, said porous metal material being secured on and to said sheet and said projecting segments so as to provide a reinforced structure having a substantially uniform porous metal surface.
Claim 8
Dependent Claim
88 words
A sheet reinforced porous metal surfaced structure comprising a reinforcing backing sheet, at least a portion of the surface of which has been formed into projecting segments which project from the unformed portion said surface, and a porous metal material deposited on said reinforcing backing sheet to a height sufficient to at least cover and imbed said projecting segments, said porous metal material being secured on and to said sheet and said projecting segments so as to provide a reinforced structure having a substantially uniform porous metal surface.
Claim 9
Dependent Claim
58 words
A sheet reinforced porous metal surfaced structure according to claim 6 wherein, measured on a plane parallel to the surface of the reinforcing backing sheet, the area of the projection on said plane of the surface area of the projecting segments equals at least 5 percent of the surface area of the reinforcing backing sheet measured before forming.
Claim 10
Dependent Claim
36 words
A sheet reinforced porous metal surfaced structure according to claim 7 wherein said reinforced backing sheet is at least 0.001 inch thick and is selected from the grouP consisting of metals, expanded metals, and metal alloys.
Claim 11
Dependent Claim
35 words
A sheet reinforced porous metal surfaced structure according to claim 7 wherein said projecting segments are disposed at an angle of between 45* and about 90* with the unformed surface of said reinforcing backing sheet.
Claim 12
Dependent Claim
59 words
A sheet reinforced porous metal surfaced structure according to claim 7 wherein said reinforced backing sheet is a corrugated mesh sheet and wherein the ridges of said corrugation are the projecting segments, said ridges being at substantially a 90* angle with the anticipated direction of the force to be applied by an abrading member contacting the porous metal surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |