US3605795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spindle valve
Assignee: Gebrueder Boehler and Co AG
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Filing: 1969-01-28
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Granted: 1971-09-20
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Expires: 1989-01-28
Abstract
Abstract A SPINDLE VALVE FOR PREVENTING THE ESCAPE OF AN OPERATING MEDIUM AND RESISTANT TO EXTREME TEMPERATURE DIFFERENTIALS IN SAID MEDIUM, THE VALVE INCLUDING A HOUSING AND AN AXIALLY MOVABLY SPINDLE HAVING A CLOSURE MEANS AT ONE END ADJACENT A VALVE SEAT IN THE HOUSING. A SIPHON SURROUNDS THE SPINDLE AND IS SPACED FROM THE CLOSURE MEANS, AND A TUBE CONNECTS THE CLOSURE MEANS TO THE SIPHON. A SIPHON CHAMBER EXISTS BETWEEN THE SIPHON AND THE HOUSING, AND A NARROW ANNULUS EXISTS BETWEEN THE TUBE AND THE HOUSING. COOLING FINS ARE ARE CONNECTED TO THE HOUSING ADJACENT THE NARROW ANNULUS, AND A HEATING MEANS SURROUNDS THE SIPHON CHAMBER.
Inventors
- 👤 Gundolf Rajakovics
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:21
CPC Classifications
F; F16; F16K; F16K49/00; F16K49/002; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6525; Y10T137/6606
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |