US3217834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of lubrication for metal frictional surfaces
Assignee: Individual
•
Filing: 1963-06-14
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Granted: 1965-11-16
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Expires: 1983-06-14
Abstract
No abstract record available.
Inventors
- 👤 Nakamura Kenichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:01
CPC Classifications
F; F16; F16N; F16N39/00; B; B21; B21C; B21C23/00; B21C23/32; B21C9/00; F16N17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS OF LUBRICATION FOR METAL FRICTIONAL SURFACES COMPRISING THE STEPS OF ADDING UP TO ABOUT 5% OF ORGANIC PHOSPHITE COMPOUNDS TO LUBRICATING OIL APPLIED TO FRICTIONAL SURFACES, AND PASSING A SUBSTANTIALLY UNIFORM ELECTRIC CURRENT ACROSS SAID FRICTION SURFACES AND THROUGH SAID LUBRICATING OIL WITH SAID ADDED COMPOUNDS IN ORDER TO INITIATE AND TO ACCELERATE THE FORMATION OF A FILM OF METAL COMPOUNDS ON SAID FRICTIONAL SURFACES, THEREBY INCREASING THE LUBRICATION PERFORMANCE OF SAID LUBRICATING OIL AND REDUCING THE COEFFICIENT OF FRICTION BETWEEN SAID FRICTIONAL SURFACES.
Claim 2
Dependent Claim
86 words
A PROCESS OF LUBRICATION FOR METAL FRICTIONAL SURFACES COMPRISING THE STEPS OF ADDING UP TO ABOUT 5% OF ORGANIC PHOSPHITE COMPOUNDS TO LUBRICATING OIL APPLIED TO FRICTIONAL SURFACES, AND PASSING A SUBSTANTIALLY UNIFORM ELECTRIC CURRENT ACROSS SAID FRICTION SURFACES AND THROUGH SAID LUBRICATING OIL WITH SAID ADDED COMPOUNDS IN ORDER TO INITIATE AND TO ACCELERATE THE FORMATION OF A FILM OF METAL COMPOUNDS ON SAID FRICTIONAL SURFACES, THEREBY INCREASING THE LUBRICATION PERFORMANCE OF SAID LUBRICATING OIL AND REDUCING THE COEFFICIENT OF FRICTION BETWEEN SAID FRICTIONAL SURFACES.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |