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US3768985A Expired / Lapsed US ⏱️ 0.0 years remaining

Liquid interface diffusion bonded titanium

Assignee: Rohr Inc
•
Filing: 1969-12-29
•
Granted: 1973-10-30
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Expires: 1989-12-29
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Abstract

Abstract Fitted titanium members or articles are joined, face to fitted face, by a diffusion bonding process in which a small amount of brazing type material is interposed between said faces, which material, when rendered liquidus by heat, forms between the faying surfaces a liquid interface and resultant diffusion bridge which accelerates atomic diffusion of the basis materials across the bonded joint. The bonding cycle includes an initial period during which the interface material is rendered liquidus, followed by a diffusion period during which atomic diffusion occurs across the bridge provided by the interface material. The resultant bonded joint is characterized by atomic mixing and grain growth of the basis materials across the joint, and diffusion and dilution of the interface materials with the basis materials in the region of the joint.

Inventors

  • 👤 J Woodward

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 15:11
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/001; B23K35/005; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/1234; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12861; Y10T428/12882

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US2906008A Cited
US2816355A Cited
US2962811A Cited
US3401025A Cited
US3417461A Cited
US3455663A Cited
US3442010A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-10-29 1977-04-30 1977-10-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-10-29 1981-04-30 1981-10-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-10-29 1985-04-30 1985-10-30 $7700.00 Window Closed / Lapsed

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