US4140898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for detecting disturbances in yarn travel at a textile machine
Assignee: Luwa Ltd
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Filing: 1978-01-09
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Granted: 1979-02-20
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Expires: 1998-01-09
Abstract
Abstract A circuit for detecting disturbances in yarn travel at a textile machine, comprising a probe delivering an electrical signal in the presence of such disturbances, the probe being operatively coupled by means of discriminator stages with a pre-selection counter structured for setting the maximum permissable number of disturbances. The pre-selection counter is operatively coupled with a multivibrator which, upon exceeding the aforesaid number, delivers a disturbance signal. A clock generator is coupled with one input of the multivibrator which is constructed as a bistable multivibrator or flip-flop and additionally is connected by means of a delay element with a resetting input of the pre-selection counter.
Inventors
- 👤 Hermann Gasser
- 👤 Karl Curiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:48
CPC Classifications
D; D01; D01H; D01H13/00; D01H13/32
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
131 words
A circuit for detecting disturbances in yarn travel at a textile machine, comprising: a probe delivering an electrical signal in response to the presence of a yarn travel disturbance; discriminator stages; pre-selection counter means having a resetting input and serving for setting the maximum permissible number of said yarn travel disturbances; said probe being operatively connected by means of said discriminator stages with said preselection counter means; a bistable multivibrator for delivering a disturbance signal upon exceeding said number of disturbances; said pre-selection counter means being operatively connected with said bistable multivibrator; said bistable multivibrator having an input; a clock generator connected with said input of said bistable multivibrator; a delay element; said clock generator being connected by means of said delay element with said resetting input of said pre-selection counter.
Claim 2
Dependent Claim
131 words
A circuit for detecting disturbances in yarn travel at a textile machine, comprising: a probe delivering an electrical signal in response to the presence of a yarn travel disturbance; discriminator stages; pre-selection counter means having a resetting input and serving for setting the maximum permissible number of said yarn travel disturbances; said probe being operatively connected by means of said discriminator stages with said preselection counter means; a bistable multivibrator for delivering a disturbance signal upon exceeding said number of disturbances; said pre-selection counter means being operatively connected with said bistable multivibrator; said bistable multivibrator having an input; a clock generator connected with said input of said bistable multivibrator; a delay element; said clock generator being connected by means of said delay element with said resetting input of said pre-selection counter.
Claim 3
Dependent Claim
77 words
The circuit as defined in claim 1, wherein: said bistable multivibrator has an input side; a RS flip-flop connected with said input side of said bistable multivibrator; said RS flip-flop having a set input (S-input) and a reset input (R-input); said pre-selection counter means having an output; said S-input of said RS flip-flop being connected with the output of said pre-selection counter and said R-input being connected by means of said delay element with said clock generator.
Claim 4
Dependent Claim
28 words
The circuit as defined in claim 1, wherein: said delay element comprises a monostable multivibrator having a switching-through time corresponding to the time delay of the delay element.
Claim 5
Dependent Claim
59 words
The circuit arrangement as defined in claim 1, wherein: said clock generator comprises an oscillator and a subsequently connected frequency divider; said oscillator and said frequency divider each having a rspective output; and AND-gate having two inputs; the output of each said oscillator and said frequency divider being connected with a respective one of said inputs of said AND-gate.
Claim 6
Dependent Claim
38 words
The circuit as defined in claim 1, wherein: said bistable multivibrator comprises at least two series connected D flip-flops, each having a resetting input; said resetting inputs of said two D flop-flops being connected with said clock generator.
Claim 7
Dependent Claim
35 words
The circuit as defined in claim 1, wherein: said bistable multivibrator has a last stage comprising a monostable multivibrator having a flop over time which is greater than a clock period of the clock generator.
Claim 8
Dependent Claim
137 words
The circuit as defined in claim 6, wherein: said bistable multivibrator comprises at least two series connected first and second D flip-flops each having a resetting input and an output; said resetting inputs of said two D flip-flops being connected with said clock generator; said monostable multivibrator having an input; an AND-gate having first, second and third inputs and an output; a voltage source; the input of said monostable multivibrator being connected with the output of said AND-gate; the first of said three inputs of said AND-gate being connected with said clock generator; the second of said three inputs being connected with the output of the first D flip-flop; the third of said three inputs being connected with said voltage source; and a switch for connecting said voltage source with the output of the second D flop-flop.
Claim 9
Dependent Claim
28 words
The circuit as defined in claim 1, wherein: the delay time of the delay element amounts to less than 1% of the clock period of the clock generator.
Claim 10
Dependent Claim
129 words
A circuit for detecting disturbances in yarn travel at a textile machine, comprising: means for delivering an electrical signal in response to the presence of a yarn travel disturbance; discriminator means; pre-selection means having a resetting input and serving for setting the maximum permissible number of said yarn travel disturbances; said delivering means being operatively connected by means of said discriminator means with said pre-selection means; a bistable multivibrator for delivering a disturbance signal upon exceeding said number of disturbances; said pre-selection means being operatively connected with said bistable multivibrator; said bistable multivibrator having an input; a clock generator connected with said input of said bistable multivibrator; a delay element; said clock generator being connected by means of said delay element with said resetting input of said pre-selection counter.
Claim 11
Dependent Claim
129 words
A circuit for detecting disturbances in yarn travel at a textile machine, comprising: means for delivering an electrical signal in response to the presence of a yarn travel disturbance; discriminator means; pre-selection means having a resetting input and serving for setting the maximum permissible number of said yarn travel disturbances; said delivering means being operatively connected by means of said discriminator means with said pre-selection means; a bistable multivibrator for delivering a disturbance signal upon exceeding said number of disturbances; said pre-selection means being operatively connected with said bistable multivibrator; said bistable multivibrator having an input; a clock generator connected with said input of said bistable multivibrator; a delay element; said clock generator being connected by means of said delay element with said resetting input of said pre-selection counter.
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) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |