US3751893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strand detection
Assignee: Leesona Corp
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Filing: 1971-10-29
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Granted: 1973-08-14
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Expires: 1991-10-29
Abstract
Abstract A tender patrols the spinning stations of a spinning frame and stops to service any station requiring attention. One reason for stopping the tender is because a strand normally spun into yarn has broken at a spinning station. In order to determine whether or not the strands are advancing normally at the spinning stations, the tender carries a transducer responsive to vibration of a feeler upon engaging the normally advancing strands to actuate an electronic switch which provides a signal permitting the tender to continue its patrolling operation. If a strand is not advancing normally the signal is not provided and the tender stops to service the station.
Inventors
- 👤 W Goodhue
- 👤 T Pitts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:10
CPC Classifications
D; D01; D01H; D01H13/00; D01H13/14; D01H13/145
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
Apparatus for sensing the condition of a strand processing position which is operable to advance a strand in a path therealong comprising, strand sensing means movable relative to said strand processing position, said sensing means including strand engaging means operable to intersect the path of said strand as said sensing means is moved relative thereto, said strand engaging means being connected to means for producing an acoustical signal in response to engagement of said strand engaging means with said strand, transducer means operable to convert said acoustical signal to an electrical signal, and signal detection means operable to receive said electrical signal and produCe an output signal when said electrical signal exceeds a predetermined magnitude.
Claim 2
Dependent Claim
115 words
Apparatus for sensing the condition of a strand processing position which is operable to advance a strand in a path therealong comprising, strand sensing means movable relative to said strand processing position, said sensing means including strand engaging means operable to intersect the path of said strand as said sensing means is moved relative thereto, said strand engaging means being connected to means for producing an acoustical signal in response to engagement of said strand engaging means with said strand, transducer means operable to convert said acoustical signal to an electrical signal, and signal detection means operable to receive said electrical signal and produCe an output signal when said electrical signal exceeds a predetermined magnitude.
Claim 3
Dependent Claim
24 words
Apparatus as set forth in claim 1 including means for amplifying said electrical signal prior to transmission of said signal to said detection means.
Claim 4
Dependent Claim
36 words
Apparatus as set forth in claim 2 wherein said signal detection means is a signal threshhold detector triggered to produce said output signal when the amplitude of the electrical signal received thereby exceeds said predetermined magnitude.
Claim 5
Dependent Claim
40 words
Apparatus as set forth in claim 1 wherein said strand engaging means is deflected in response to engagement with said strand, and said means for producing said acoustical signal operates in response to the deflection of said strand engaging means.
Claim 6
Dependent Claim
27 words
Apparatus as set forth in claim 1 wherein said means for producing said acoustical signal includes a diaphragm, said strand engaging means being connected with said diaphragm.
Claim 7
Dependent Claim
20 words
Apparatus as set forth in claim 1 wherein said transducer means includes a microphone arranged to receive said acoustical signal.
Claim 8
Dependent Claim
38 words
Apparatus as set forth in claim 1 including a tender movable relative to said strand processing position and operable to tend the strand at said position, said output signal being operable to control the operation of said tender.
Claim 9
Dependent Claim
16 words
Apparatus as set forth in claim 7 including means mounting said sensing means on said tender.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |