US3674382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed electric compressor
Assignee: Toshiba Corp
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Filing: 1971-02-04
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Granted: 1972-07-04
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Expires: 1991-02-04
Abstract
Abstract A HERMETICALLY SEALED ELECTRIC COMPRESSOR COMPRISING A LONGITUDINAL LUBRICANT PASSAGE FOR CONDUCTING A LUBRICANT TO THE ROTATING AND SLIDING PARTS AND A REVOLVING SHAFT PROVIDED WITH A RECEPTACLE PASSAGE CROSSWISE PASSING THROUGH SAID LUBRICANT PASSAGE AND REVOLVING SHAFT, WHEREIN THE REVOLVING SHAFT IS FITTED WITH A RING SLEEVE AND THE RECEPTACLE IS DISPOSED BETWEEN THE SLEEVE AND THE OPENING OF THE RECEPTACLE PASSAGE PENETRATING THE OUTER SURFACE OF THE SHAFT THEREBY TO RECEIVE SOLID FOREIGN MATTER IN THE RECEPTACLE.
Inventors
- 👤 Tadao Kubota
- 👤 Keisuke Ida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:20
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/02; F04B39/0223; F04B39/023; F04B39/0238; F04B39/0246; F04D; F04D1/00; F04D1/14; F16; F16N; F16N7/00; F16N7/36; F16N7/366; F16N2210/00; F16N2210/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |