US3611342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for detecting transport disturbances in a continuous material
Assignee: Akzona Inc
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Filing: 1969-06-12
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Granted: 1971-10-05
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Expires: 1989-06-12
Abstract
Abstract A method for detecting transport disturbances in a moving continuous material which comprises contacting a moving continuous material, e.g., a thread, with a vibration pickup means, producing a varying output signal with the pickup means during movement of the material, examining the varying output signal for the magnitude of the variations occurring therein and detecting the presence of a disturbance in the transport of the continuous material from the magnitude of the variations. Also an apparatus for carrying out this method is disclosed.
Inventors
- 👤 Dirk Jan Raaben
- 👤 Pieter J Van Ek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:53
CPC Classifications
B; B65; B65H; B65H63/00; B65H63/02; B65H63/024; B65H63/028; B65H63/032; B65H63/0321; B65H63/0327; B65H63/06; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
An apparatus for detecting transport disturbances in a moving continuous threadlike material which comprises a vibration pickup means in contact with a moving continuous threadlike material for emitting a varying output signal upon movement of the continuous material, said pickup means comprising a piezoelectric pickup element in the form of an elongated strip; support means operatively associated with said strip for preventing breakage of the strip by said continuous material, said support means insuring that the continuous material only subjects the strip to a predetermined pressure; and a monitoring means connected to said vibration means for determining when a transport disturbance has occurred in response to the magnitude of the variation in the output signal.
Claim 2
Independent Claim
115 words
An apparatus for detecting transport disturbances in a moving continuous threadlike material which comprises a vibration pickup means in contact with a moving continuous threadlike material for emitting a varying output signal upon movement of the continuous material, said pickup means comprising a piezoelectric pickup element in the form of an elongated strip; support means operatively associated with said strip for preventing breakage of the strip by said continuous material, said support means insuring that the continuous material only subjects the strip to a predetermined pressure; and a monitoring means connected to said vibration means for determining when a transport disturbance has occurred in response to the magnitude of the variation in the output signal.
Claim 3
Dependent Claim
43 words
The apparatus of claim 1, in which said support means comprises guide means positioned adjacent to and below said elongated strip for guiding the continuous material in contact with said strip and for reducing the pressure exerted by said material on said strip.
Claim 4
Dependent Claim
37 words
The apparatus of claim 1, in which said support means comprises an insulating support member adhesively sealed to the entire length of one side of said strip, said continuous material contacting said strip on its other side.
Claim 5
Dependent Claim
67 words
The apparatus of claim 1, in which said strip is supported at both ends by an insulating support, one side of the intermediate nonsupported portion the strip acting as a guide for said continuous material and said support means including a stop element positioned close to the other side of said strip to prevent excessive deflection of the strip due to pressure exerted by said continuous material.
Claim 6
Dependent Claim
40 words
The apparatus of claim 1 in which said vibration pickup means converts the mechanical vibrations induced therein when the continuous material is in motion into an alternating voltage and said monitoring means responds to the magnitude of the alternating voltage.
Claim 7
Dependent Claim
17 words
The apparatus of claim 1 in which the pickup element is made of a ceramic piezoelectric material.
Claim 8
Dependent Claim
29 words
The apparatus of claim 1 in which said vibration pickup means further comprises a sensing means in contact with the continuous material for transmitting vibrations to said piezoelectric strip.
Claim 9
Dependent Claim
24 words
The apparatus of claim 7 in which said strip is fixed at one end and the other end is provided with said sensing means.
References Cited (Backward Citations)
US3440634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |