US3246224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction speed governor
Assignee: RTX Corp
•
Filing: 1963-09-12
•
Granted: 1966-04-12
•
Expires: 1983-09-12
Abstract
No abstract record available.
Inventors
- 👤 Helfner Jules
- 👤 Fenster Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:36
CPC Classifications
H; H02; H02P; H02P3/00; H02P3/06; H02P3/18; H02P3/26; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AN INDUCTION SPEED GOVERNOR FOR A MOTOR HAVING A SHAFT INCLUDING IN COMBINATION AN ELEMENT HAVING A NATRUAL FREQUENCY OF VIBRATION, MEANS RESPONSIVE TO ROTATION OF SAID SHAFT FOR VIBRATING SAID ELEMENT AT A FREQUENCY IN THE REGION OF SAID NATURAL FREQUENCY, A SOURCE OF ALTERNATING VOLTAGE, A VARIABLE IMPEDANCE, MEANS CONNECTING
Claim 2
Dependent Claim
52 words
AN INDUCTION SPEED GOVERNOR FOR A MOTOR HAVING A SHAFT INCLUDING IN COMBINATION AN ELEMENT HAVING A NATRUAL FREQUENCY OF VIBRATION, MEANS RESPONSIVE TO ROTATION OF SAID SHAFT FOR VIBRATING SAID ELEMENT AT A FREQUENCY IN THE REGION OF SAID NATURAL FREQUENCY, A SOURCE OF ALTERNATING VOLTAGE, A VARIABLE IMPEDANCE, MEANS CONNECTING
References Cited (Backward Citations)
US2994023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |