US3306133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive unit for an automatic washing machine
Assignee: ZF Friedrichshafen AG
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Filing: 1964-07-14
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Granted: 1967-02-28
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Expires: 1984-07-14
Abstract
No abstract record available.
Inventors
- 👤 Rhein Hans
- 👤 Keller Josef
- 👤 Schuller Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:54
CPC Classifications
F; F16; F16D; F16D43/00; F16D43/02; F16D43/04; D; D06; D06F; D06F37/00; D06F37/30; D06F37/36; F16H; F16H61/00; F16H61/02; F16H61/0262; B; B60; B60K; B60K2704/00; B60K2704/04; F16H2716/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A DRIVE UNIT FOR A WASHING MACHINE AND THE LIKE, COMPRISING, IN COMBINATION: (A) A DUAL SPEED MOTOR HAVING A ROTATABLE DRIVE MEMBER AND ADAPTED SELECTIVELY TO ROTATE SAID DRIVE MEMBER AT A LOWER SPEED AND A HIGHER SPEED; (B) SWITCHGEAR CONNECTED TO SAID MOTOR FOR CONTROLLING THE SPEED OF SAID DRIVE MEMBER; (C) A DUAL SPEED TRANSMISSION HAVING AN INPUT MEMBER CONNECTED TO SAID DRIVE MEMBER FOR TRANSMISSION OF TORQUE FROM SAID MOTOR TO SAID TRANSMISSION AND A ROTATABLE OUTPUT MEMBER, AND CHANGEABLE BETWEEN A LOWER AND A HIGHER TRANSMISSION RATIO FROM SAID INPUT MEMBER TO SAID OUTPUT MEMBER; (D) CENTRIFUGAL TRANSMISSION CONTROL MEANS RESPONSIVE TO ROTATION OF SAID DRIVE MEMBER AT SAID HIGHER SPEED FOR CAUSING SAID TRANSMISSION TO CHANGE FROM SAID LOWER TO SAID HIGHER TRANSMISSION RATIO; AND (E) LOCKING MEANS RESPONSIVE TO TORQUE TRANSMITTED FROM SAID MOTOR TO SAID TRANSMISSION AT BOTH SPEEDS OF SAID MOTOR FOR PREVENTING CHANGING OF SAID TRANSMISSION FROM SAID HIGHER TO SAID LOWER TRANSMISSION RATIO.
Claim 2
Dependent Claim
164 words
A DRIVE UNIT FOR A WASHING MACHINE AND THE LIKE, COMPRISING, IN COMBINATION: (A) A DUAL SPEED MOTOR HAVING A ROTATABLE DRIVE MEMBER AND ADAPTED SELECTIVELY TO ROTATE SAID DRIVE MEMBER AT A LOWER SPEED AND A HIGHER SPEED; (B) SWITCHGEAR CONNECTED TO SAID MOTOR FOR CONTROLLING THE SPEED OF SAID DRIVE MEMBER; (C) A DUAL SPEED TRANSMISSION HAVING AN INPUT MEMBER CONNECTED TO SAID DRIVE MEMBER FOR TRANSMISSION OF TORQUE FROM SAID MOTOR TO SAID TRANSMISSION AND A ROTATABLE OUTPUT MEMBER, AND CHANGEABLE BETWEEN A LOWER AND A HIGHER TRANSMISSION RATIO FROM SAID INPUT MEMBER TO SAID OUTPUT MEMBER; (D) CENTRIFUGAL TRANSMISSION CONTROL MEANS RESPONSIVE TO ROTATION OF SAID DRIVE MEMBER AT SAID HIGHER SPEED FOR CAUSING SAID TRANSMISSION TO CHANGE FROM SAID LOWER TO SAID HIGHER TRANSMISSION RATIO; AND (E) LOCKING MEANS RESPONSIVE TO TORQUE TRANSMITTED FROM SAID MOTOR TO SAID TRANSMISSION AT BOTH SPEEDS OF SAID MOTOR FOR PREVENTING CHANGING OF SAID TRANSMISSION FROM SAID HIGHER TO SAID LOWER TRANSMISSION RATIO.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |