US3314264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling the speed of the drive motors for driving the roll stands of a multiple-stand rolling mill
Assignee: Friedrich Kocks GmbH and Co
•
Filing: 1964-03-23
•
Granted: 1967-04-18
•
Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 Vater Max
- 👤 Hinkel Artur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:03
CPC Classifications
B; B21; B21B; B21B35/00; B21B35/02; B21B35/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
APPARATUS FOR CONTROLLING THE SPEED OF DRIVE MOTORS FOR DRIVING THE ROLL STANDS OF A MULTIPLE-STAND ROLLING MILL COMPRISING A DRIVE MOTOR FOR EACH STAND, A PRIMARY SIGNAL FEEDER COUPLED TO EACH DRIVE MOTOR DERIVING ITS INPUT SIGNAL THEREFROM, SUCH INPUT SIGNAL BEING PROPORTIONAL TO THE SPEED OF THE DRIVE MOTOR, A SECONDARY DRIVE ELEMENT FOR EACH STAND, A SECONDARY SIGNAL FEEDER COUPLED TO EACH SECONDARY DRIVE ELEMENT DERIVING ITS INPUT SIGNAL THEREFROM, SUCH INPUT SIGNAL BEING PROPORTIONAL TO THE SPEED OF THE SECONDARY DRIVE ELEMENT, A DIFFERENCE TRANSMITTER FOR EACH STAND TO WHICH THE INPUT SIGNALS FROM THE PRIMARY AND SECONDARY SIGNAL FEEDERS FOR THAT STAND ARE FED IN SUCH MANNER THAT THE SPEED OF THE DRIVE MOTOR FOR THAT STAND IS AFFECTED BY THE INPUT SIGNAL OF THE SECONDARY SIGNAL FEEDER WHEN THE PRIMARY SIGNAL IS DIFFERENT FROM THE INPUT SIGNAL OF THE PRIMARY SIGNAL FEEDER, COMMON MEANS
Claim 2
Dependent Claim
150 words
APPARATUS FOR CONTROLLING THE SPEED OF DRIVE MOTORS FOR DRIVING THE ROLL STANDS OF A MULTIPLE-STAND ROLLING MILL COMPRISING A DRIVE MOTOR FOR EACH STAND, A PRIMARY SIGNAL FEEDER COUPLED TO EACH DRIVE MOTOR DERIVING ITS INPUT SIGNAL THEREFROM, SUCH INPUT SIGNAL BEING PROPORTIONAL TO THE SPEED OF THE DRIVE MOTOR, A SECONDARY DRIVE ELEMENT FOR EACH STAND, A SECONDARY SIGNAL FEEDER COUPLED TO EACH SECONDARY DRIVE ELEMENT DERIVING ITS INPUT SIGNAL THEREFROM, SUCH INPUT SIGNAL BEING PROPORTIONAL TO THE SPEED OF THE SECONDARY DRIVE ELEMENT, A DIFFERENCE TRANSMITTER FOR EACH STAND TO WHICH THE INPUT SIGNALS FROM THE PRIMARY AND SECONDARY SIGNAL FEEDERS FOR THAT STAND ARE FED IN SUCH MANNER THAT THE SPEED OF THE DRIVE MOTOR FOR THAT STAND IS AFFECTED BY THE INPUT SIGNAL OF THE SECONDARY SIGNAL FEEDER WHEN THE PRIMARY SIGNAL IS DIFFERENT FROM THE INPUT SIGNAL OF THE PRIMARY SIGNAL FEEDER, COMMON MEANS
References Cited (Backward Citations)
US1466642A
Cited
GB171570A
Cited
US1939113A
Cited
US2757556A
Cited
DE1002719B
Cited
US3074300A
Cited
US3176543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |