US3210579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for generating vibration
Assignee: Yaskawa Electric Corp
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Filing: 1962-12-17
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Granted: 1965-10-05
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Sonoda Ichiro
- 👤 Nakashima Tetsuichiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:15
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/10; B06B1/16; H; H02; H02K; H02K7/00; H02K7/06; H02K7/061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN APPARATUS FOR GENERATING VIBRATION COMPRISING A SHAFT, TWO WOUND-ROTOR INDUCTION MOTORS MOUNTED ON SAID SHAFT SUBSTANTIALLY AT OPPOSITE ENDS THEREOF, WHEREBY SAID SHAFT SERVES AS A COMMON ROTOR SHAFT FOR SAID TWO INDUCTION MOTORS, AN UNBALANCED MASS SECURED TO SAID SHAFT, ELECTRICAL CONNECTIONS CONNECTING THE ROTOR WINDINGS OF SAID TWO INDUCTION MOTORS WITH EACH OTHER RESPECTIVELY, FURTHER CONNECTIONS EXTENDING FROMTHE STATOR WINDINGS OF ONE OF SAID TWO INDUCTION MOTORS FOR CONNECTION TO A SOURCE OF POWER SUPPLY, SECONDARY RESISTANCE MEANS, AND MEANS CONNECTING THE STATOR OF THE OTHER OF SAID MOTORS ACROSS SAID RESISTANCE MEANS.
Claim 2
Independent Claim
96 words
AN APPARATUS FOR GENERATING VIBRATION COMPRISING A SHAFT, TWO WOUND-ROTOR INDUCTION MOTORS MOUNTED ON SAID SHAFT SUBSTANTIALLY AT OPPOSITE ENDS THEREOF, WHEREBY SAID SHAFT SERVES AS A COMMON ROTOR SHAFT FOR SAID TWO INDUCTION MOTORS, AN UNBALANCED MASS SECURED TO SAID SHAFT, ELECTRICAL CONNECTIONS CONNECTING THE ROTOR WINDINGS OF SAID TWO INDUCTION MOTORS WITH EACH OTHER RESPECTIVELY, FURTHER CONNECTIONS EXTENDING FROMTHE STATOR WINDINGS OF ONE OF SAID TWO INDUCTION MOTORS FOR CONNECTION TO A SOURCE OF POWER SUPPLY, SECONDARY RESISTANCE MEANS, AND MEANS CONNECTING THE STATOR OF THE OTHER OF SAID MOTORS ACROSS SAID RESISTANCE MEANS.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |