US3665731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical pattern mechanism for circular knitting machines
Assignee: Mayer and Cie GmbH and Co
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Filing: 1970-01-21
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Granted: 1972-05-30
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Expires: 1990-01-21
Abstract
Abstract An electrical pattern mechanism for a circular knitting machine having a rotary needle cylinder and electromagnetically actuated adjusting components which act either directly on needles or on jacks and which are controlled by information derived from a program carrier. A bistable electronic sweep circuit has one or the other of its conditions determined by the information in the control signal derived from the program carrier. This sweep circuit has a pair of outputs connected through one of a pair of univibrators with one of a pair of electromagnetic windings. One of the univibrators is connected with one of these windings together with a time-limited current amplifier circuit.
Inventors
- 👤 Gerhard Groezinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:26
CPC Classifications
D; D04; D04B; D04B15/00; D04B15/66
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
193 words
In a circular knitting machine, apparatus for selectively positioning a needle-actuating magnetic armature between first and second positions in response to transitions between first and second control signals individually indicative of knitting and non-knitting commands, which comprises: first and second separately excitable control windings electromagnetically associated with the armature for moving the armature from the first to the second position when the first winding is excited and for moving the armature from the second to the first position when the second winding Is excited; a bistable multivibrator having first and second complementary inputs and first and second complementary outputs; means responsive to each occurrence of the first control signal for exciting the first input of the bistable multivibrator; means responsive to each occurrence of the second control signal for exciting the second input of the bistable multivibrator; means including first and second normally disabled switching means for individually exciting the first and second windings when the switching means are enabled; means responsive to the first output of the bistable multivibrator for enabling the first switching means; and means responsive to the second output of the bistable multivibrator for enabling the second switching means.
Claim 2
Dependent Claim
193 words
In a circular knitting machine, apparatus for selectively positioning a needle-actuating magnetic armature between first and second positions in response to transitions between first and second control signals individually indicative of knitting and non-knitting commands, which comprises: first and second separately excitable control windings electromagnetically associated with the armature for moving the armature from the first to the second position when the first winding is excited and for moving the armature from the second to the first position when the second winding Is excited; a bistable multivibrator having first and second complementary inputs and first and second complementary outputs; means responsive to each occurrence of the first control signal for exciting the first input of the bistable multivibrator; means responsive to each occurrence of the second control signal for exciting the second input of the bistable multivibrator; means including first and second normally disabled switching means for individually exciting the first and second windings when the switching means are enabled; means responsive to the first output of the bistable multivibrator for enabling the first switching means; and means responsive to the second output of the bistable multivibrator for enabling the second switching means.
Claim 3
Dependent Claim
112 words
In an electrical pattern mechanism for circular knitting machines having a rotary needle cylinder and electromagnetically actuated components acting on the needles or jacks according to control signals derived from a program carrier: a bistable multivibrator whose output states are determined by the control signals supplied by the program carrier; a monostable multivibrator having an input connected to an output of the bistable multivibrator; a resistor; a capacitor connected across the resistor; an electromagnetic winding; a transistor; winding excitation means including means for serially connecting the resistor, the winding, and the collector-emitter path of the transistor; and means for coupling the output of the monostable multivibrator to the base of the transistor.
Claim 4
Dependent Claim
112 words
In an electrical pattern mechanism for circular knitting machines having a rotary needle cylinder and electromagnetically actuated components acting on the needles or jacks according to control signals derived from a program carrier: a bistable multivibrator whose output states are determined by the control signals supplied by the program carrier; a monostable multivibrator having an input connected to an output of the bistable multivibrator; a resistor; a capacitor connected across the resistor; an electromagnetic winding; a transistor; winding excitation means including means for serially connecting the resistor, the winding, and the collector-emitter path of the transistor; and means for coupling the output of the monostable multivibrator to the base of the transistor.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |