Patent US4513977A successfully refreshed from Google Patents.
US4513977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel floating seal with remelted deposit-alloyed wear surfaces
Assignee: Nippon Piston Ring Co Ltd
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Filing: 1983-09-07
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Granted: 1985-04-30
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Expires: 2003-09-07
Abstract
Abstract A floating seal provided at its seal face with a hardened portion, in which the body of the floating seal is made of steel, and in which the sealing member is provided at its seal face with a deposit-alloyed surface obtained by surface remelting.
Inventors
- 👤 Genkichi Umeha
- 👤 Takeshi Hiraoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:33
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3496; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/327; C; C21; C21D; C21D1/00; C21D1/06; C21D1/09; C23; C23C; C23C26/00; C23C26/02; F16J15/3436; F16J15/344; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10S277/935; Y10S277/939; Y10S277/94
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
55 words
A floating seal comprising; a seal member having a seal face and a body, said body being formed of steel, said seal member being provided at said seal face with a surface remelted, deposit-alloyed surface having a thickness on the order of several millimeters, portions of said steel body adjacent said seal face being martensited.
Claim 2
Dependent Claim
55 words
A floating seal comprising; a seal member having a seal face and a body, said body being formed of steel, said seal member being provided at said seal face with a surface remelted, deposit-alloyed surface having a thickness on the order of several millimeters, portions of said steel body adjacent said seal face being martensited.
Claim 3
Dependent Claim
21 words
A device as claimed in claim 1, wherein said surface remelted, deposit-alloyed surface includes alloying elements comprised of carbide forming materials.
Claim 4
Independent Claim
95 words
A method of producing a seal member for a floating seal, comprising; forming a base body of steel, said base body having a seal face; heating said seal face using a high density energy beam to an extent such as to melt said seal face; simultaneously adding alloying elements comprised of carbide forming elements to said seal face by depositing said alloying elements by a plating technique; and cooling said seal face to form a surface remelted deposit-alloyed layer on said base body and a martensited region of said base body near said seal face
Claim 5
Independent Claim
95 words
A method of producing a seal member for a floating seal, comprising; forming a base body of steel, said base body having a seal face; heating said seal face using a high density energy beam to an extent such as to melt said seal face; simultaneously adding alloying elements comprised of carbide forming elements to said seal face by depositing said alloying elements by a plating technique; and cooling said seal face to form a surface remelted deposit-alloyed layer on said base body and a martensited region of said base body near said seal face
Claim 6
Independent Claim
98 words
A method of producing a seal member for a floating seal, comprising; forming a base body of steel, said base body having a seal face, forming a layer of alloying elements on said seal face by plating, said alloying elements comprising carbide forming elements; heating said seal face and said layer of alloying elements so as to melt the same, using a high density energy beam as a heating source; and cooling said seal face to form a surface remelted-alloyed layer on said base body with portions of said base body near said seal face forming martensited regions.
Claim 7
Independent Claim
98 words
A method of producing a seal member for a floating seal, comprising; forming a base body of steel, said base body having a seal face, forming a layer of alloying elements on said seal face by plating, said alloying elements comprising carbide forming elements; heating said seal face and said layer of alloying elements so as to melt the same, using a high density energy beam as a heating source; and cooling said seal face to form a surface remelted-alloyed layer on said base body with portions of said base body near said seal face forming martensited regions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |