US3208222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery operated industrial truck
Assignee: Atlas Industriewagen GmbH
•
Filing: 1963-07-18
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Granted: 1965-09-28
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Expires: 1983-07-18
Abstract
No abstract record available.
Inventors
- 👤 Wilmes Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:06
CPC Classifications
B; B60; B60K; B60K1/00; Y; Y10; Y10S; Y10S60/00; Y10S60/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A DRIVE SYSTEM FOR BATTERY OPERATED INDUSTRIAL TRUCKS, COMPRISING A DIRECT CURRENT MOTOR HAVING SHUNT AND SERIES WINDINGS CONNECTED IN AIDING RELATIONSHIP WHEREBY SAID DIRECT CURRENT MOTIR IS CHARACTERIZED BY SMALL SPEED LOSS AND INCREASED FLUX UNDER INCREASED LOAD, A HYDROSTATIC DRIVE TRANSMISSION HAVING AN OUTPUT POWER RATING NOT SUBSTANTIALLY LESS THAN FIVE TIMES THE OUTPUT POWER RATING OF SAID MOTOR, MEANS FOR INFINITELY VARYING THE DRIVE TORQUE OF SAID HYDROSTATIC DRIVE TRANSMISSION, AND A DRIVE CONNECTION BETWEEN SAID MOTOR AND SAID HYDROSTATIC DRIVE TRANSMISSION.
Claim 2
Dependent Claim
85 words
A DRIVE SYSTEM FOR BATTERY OPERATED INDUSTRIAL TRUCKS, COMPRISING A DIRECT CURRENT MOTOR HAVING SHUNT AND SERIES WINDINGS CONNECTED IN AIDING RELATIONSHIP WHEREBY SAID DIRECT CURRENT MOTIR IS CHARACTERIZED BY SMALL SPEED LOSS AND INCREASED FLUX UNDER INCREASED LOAD, A HYDROSTATIC DRIVE TRANSMISSION HAVING AN OUTPUT POWER RATING NOT SUBSTANTIALLY LESS THAN FIVE TIMES THE OUTPUT POWER RATING OF SAID MOTOR, MEANS FOR INFINITELY VARYING THE DRIVE TORQUE OF SAID HYDROSTATIC DRIVE TRANSMISSION, AND A DRIVE CONNECTION BETWEEN SAID MOTOR AND SAID HYDROSTATIC DRIVE TRANSMISSION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |