Patent US4644236A successfully refreshed from Google Patents.
US4644236A
Expired / Lapsed
US
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Drive restart control for ring spinning or twisting machine
Assignee: Oerlikon Textile GmbH and Co KG
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Filing: 1985-01-18
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Granted: 1987-02-17
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Expires: 2005-01-18
Abstract
Abstract A device for controlling the output speed of a motor of a ring spinning machine, a ring twisting machine and the like in case of replacing travelers of such machines includes a speed setter for the motor and a potentiometer which is operatively connected with the speed setter to limit the output speed of the motor for allowing breaking in of replaced travelers. The potentiometer is further coupled with a speeding-up unit which is e.g. a stepper motor and which over a selected period of time increases the limited output speed to the normal operating level by automatically resetting the slider of the potentiometer from one end position to another end position.
Inventors
- 👤 Helmut Junginger
- 👤 Horst Wolf
- 👤 Wolfgang Jager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:46
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/14; D01H1/20; D01H1/32; D01H1/34
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
146 words
The combination with a ring spinning a ring twisting machine of a device for the controlled restarting of a drive motor for said ring spinning machine or ring twisting machine having a speed at a normal operating level comprising: a speed setter providing an output signal for actuating the motor so that the latter runs at a speed corresponding to said output signal; and control means operatively connected with said speed setter and providing a further output signal which acts on said speed setter, said control means including a control unit for initially bringing the speed of said motor immediately to a predetermined value of between 50% and 75% of the normal operating level and a speeding-up unit for automatically increasing the speed progressively and continuously over a selected period having a lower limit of two hours from said predetermined value to said normal operating level.
Claim 2
Dependent Claim
146 words
The combination with a ring spinning a ring twisting machine of a device for the controlled restarting of a drive motor for said ring spinning machine or ring twisting machine having a speed at a normal operating level comprising: a speed setter providing an output signal for actuating the motor so that the latter runs at a speed corresponding to said output signal; and control means operatively connected with said speed setter and providing a further output signal which acts on said speed setter, said control means including a control unit for initially bringing the speed of said motor immediately to a predetermined value of between 50% and 75% of the normal operating level and a speeding-up unit for automatically increasing the speed progressively and continuously over a selected period having a lower limit of two hours from said predetermined value to said normal operating level.
Claim 3
Dependent Claim
66 words
A device as defined in claim 1 wherein said control unit includes a potentiometer having a sliding contact and a slider movable along said sliding contact between two end positions and being operatively connected to said speed setter, said further output signal corresponding to the respective position of said slider along said sliding contact and acting on said speed setter to provide a proportional output speed.
Claim 4
Dependent Claim
49 words
A device as defined in claim 2 wherein said potentiometer further includes a first end stop constituting one of said two end positions, said further output signal acting on said speed setter to provide said limited speed when said slider occupies said one position at said first end stop.
Claim 5
Dependent Claim
51 words
A device as defined in claim 3 wherein said potentiometer further includes a second end stop constituting the other one of said end positions, said further output signal acting on said speed setter to provide said normal operating speed when said slider occupies said other position at said second end stop.
Claim 6
Dependent Claim
72 words
A device as defined in claim 4 wherein said speeding-up unit is connected to said slider for shifting the latter along said sliding contact from said one end position to said other end position over a selected time period so as to allow an increase of the output speed from the limited level to the normal operating level which increase is proportional to the position of said slider along said sliding contact.
Claim 7
Dependent Claim
16 words
A device as defined in claim 1 wherein said speeding-up unit includes a stepping motor mechanism.
Claim 8
Dependent Claim
15 words
A device as defined in claim 1 wherein said speeding-up unit includes a stepper switch.
Claim 9
Dependent Claim
14 words
A device as defined in claim 1 wherein said speeding-up unit includes a servomotor.
Claim 10
Dependent Claim
31 words
A device as defined in claim 2 wherein said control unit further includes a speed selector operatively connected with said potentiometer for selecting the normal operating level of the output speed.
Claim 11
Dependent Claim
19 words
A device as defined in claim 9 wherein said speed selector and said control unit are switched in series.
Claim 12
Dependent Claim
20 words
A device as defined in claim 9 wherein said speed selector and said control unit are switched in parallel connection.
Claim 13
Dependent Claim
14 words
A device as defined in claim 1 wherein said control unit includes a microprocessor.
Claim 14
Dependent Claim
75 words
A device as defined in claim 12 wherein said speeding-up unit includes a plurality of set-point adjusters connected with said microprocessor, a first one of said set-point adjusters being provided for transmitting the normal operating level of the output speed, a second one for transmitting the limited output speed and a third one for controlling the time period and timed progression of increasing the output speed from the limited level to the normal operational level.
Claim 15
Independent Claim
134 words
A method for controlling restarting of a drive motor having a speed of a normal operating level in a ring spinning machine or ring twisting machine comprising: providing an output signal from a speed setter for actuating the motor so that the motor runs at a speed corresponding to said output signal; and operatively connecting control means with said speed setter and providing a further output signal which acts on said speed setter, said control means including a control unit for initially bringing the speed of said motor immediately to a predetermined value between 50% and 75% of the normal operating level and a speeding-up unit for automatically increasing the speed progressively and continuously over a selected period having a lower limit of two hours from said predetermined value to said normal operating level.
Claim 16
Independent Claim
134 words
A method for controlling restarting of a drive motor having a speed of a normal operating level in a ring spinning machine or ring twisting machine comprising: providing an output signal from a speed setter for actuating the motor so that the motor runs at a speed corresponding to said output signal; and operatively connecting control means with said speed setter and providing a further output signal which acts on said speed setter, said control means including a control unit for initially bringing the speed of said motor immediately to a predetermined value between 50% and 75% of the normal operating level and a speeding-up unit for automatically increasing the speed progressively and continuously over a selected period having a lower limit of two hours from said predetermined value to said normal operating level.
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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) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |