US3377045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary field-controlled spring valve
Assignee: Individual
•
Filing: 1964-07-09
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Granted: 1968-04-09
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Expires: 1984-07-09
Abstract
No abstract record available.
Inventors
- 👤 Welcker Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:57
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/10; F16K31/04; F16K31/047; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; G05D23/275
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A ROTARY SPRING VALVE, COMPRISING A ROTARY MAGNET HAVING A SHAFT; A REDUCTION GEAR CONNECTED WITH SAID SHAFT, AN ACTUATING MEMBER CONNECTED WITH SAID REDUCTION GEAR, A MOVABLE VALVE SHAFT HAVING A MEMBER LOCATED ADJACENT SAID ACTUATING MEMBER AND ADAPTED TO BE ENGAGED THEREBY, A SPRING ENGAGING THE SECOND-MENTIONED MEMBER, AND A BRAKING DEVICE CONNECTED WITH THE FIRST-MENTIONED SHAFT AND ADAPTED TO RETARD THE SPEED OF THE FIRST-MENTIONED SHAFT DURING THE CLOSING MOVEMENT OF SAID VALVE SHAFT, WHEREIN SAID BRAKING DEVICE CONSISTS OF A FAN ASSEMBLY.
Claim 2
Dependent Claim
86 words
A ROTARY SPRING VALVE, COMPRISING A ROTARY MAGNET HAVING A SHAFT; A REDUCTION GEAR CONNECTED WITH SAID SHAFT, AN ACTUATING MEMBER CONNECTED WITH SAID REDUCTION GEAR, A MOVABLE VALVE SHAFT HAVING A MEMBER LOCATED ADJACENT SAID ACTUATING MEMBER AND ADAPTED TO BE ENGAGED THEREBY, A SPRING ENGAGING THE SECOND-MENTIONED MEMBER, AND A BRAKING DEVICE CONNECTED WITH THE FIRST-MENTIONED SHAFT AND ADAPTED TO RETARD THE SPEED OF THE FIRST-MENTIONED SHAFT DURING THE CLOSING MOVEMENT OF SAID VALVE SHAFT, WHEREIN SAID BRAKING DEVICE CONSISTS OF A FAN ASSEMBLY.
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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |