Patent US3698513A successfully refreshed from Google Patents.
US3698513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the lubrication of mechanical systems subjected to very high contact pressure
Assignee: INST DE QUIMICA FISICO ROCASOLANO
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Filing: 1970-09-24
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Granted: 1972-10-17
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Expires: 1990-09-24
Abstract
Abstract A process for utilizing molten glass as a lubricant in mechanical systems that have to meet demanding and specific load conditions. A film of lubricating glass is provided between mating surfaces, and this glass is heated to maintain it in a molten state. The contact pressure between the mating surfaces is determined, and the temperature of the glass is controlled as a function of the contact pressure in order to control the viscosity of the molten glass so that hydrodynamic lubrication can be obtained under the conditions of contact pressure to which the mating surfaces are subjected.
Inventors
- 👤 Luis Arizmendi Espunes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:18
CPC Classifications
F; F16; F16N; F16N15/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
100 words
A process for lubricating mating surfaces subjected to motion relative to each other under high contact pressure in a mechanical system, comprising the steps of: providing a film of lubricating glass between said mating surfaces; determining the contact pressure to which said mating surfaces are subjected; heating said glass to maintain said glass in a molten state; controlling the temperature of said glass as a function of said contact pressure, whereby the viscosity of said molten glass is controlled to provide continuous hydrodynamic lubrication of said mating surfaces under the conditions of contact pressure to which said surfaces are subjected.
Claim 2
Dependent Claim
100 words
A process for lubricating mating surfaces subjected to motion relative to each other under high contact pressure in a mechanical system, comprising the steps of: providing a film of lubricating glass between said mating surfaces; determining the contact pressure to which said mating surfaces are subjected; heating said glass to maintain said glass in a molten state; controlling the temperature of said glass as a function of said contact pressure, whereby the viscosity of said molten glass is controlled to provide continuous hydrodynamic lubrication of said mating surfaces under the conditions of contact pressure to which said surfaces are subjected.
Claim 3
Dependent Claim
32 words
The process as claimed in claim 1, including the steps of removing said hot, molten glass after said system is relieved of its operating pressure when said system is to be stopped.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |