US3928844A
Expired / Lapsed
US
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Web break detector system
Assignee: Butler Automatic Inc
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Filing: 1974-06-17
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Granted: 1975-12-23
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Expires: 1994-06-17
Abstract
Abstract A web break detector system employs web detectors arranged in groups spaced along the path of a moving web and spanning its width. Each detector which senses web for a predetermined time becomes active and an active detector in any detector group turns on a panel light associated with that group. When a detector no longer senses web because of a break or undue slack in the web, the detector generates a signal which causes the system to stop the process being monitored, indicate at which location in the path the break first occurred, indicate other locations in the path at which subsequent breaks occurred and activate web severing devices to sever the web at selected locations depending upon where the breaks occurred.
Inventors
- 👤 Edward F Meihofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:51
CPC Classifications
G; G08; G08B; G08B21/00; G08B21/18; G08B21/187; B; B41; B41F; B41F33/00; B41F33/04; B41F33/12; B65; B65H; B65H26/00; B65H26/02; B65H26/025; F; F16; F16P; F16P7/00; F16P7/02; Y; Y10; Y10T; Y10T83/00; Y10T83/525; Y10T83/541; Y10T83/543
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
156 words
A web break Detector system comprising A. two or more sensors for sensing web, each said sensor emitting an output signal when it detects the absence of web, B. means for positioning said sensors along a web path, c. indicating means corresponding to each sensor for indicating the detection by that sensor of the absence of web, and D. means for comparing the times of occurrence of said output signals, said comparing means applying a first signal to the indicating means corresponding to the sensor which first detects the absence of web and simultaneously applying a second signal to the indicating means corresponding to the sensors which subsequently detect the absence of web so that the indicating means automatically and simultaneously provide a display which distinguishes between the location in the web path where the absence of web was first detected and the locations in the web path where the absence of web was subsequently detected.
Claim 2
Dependent Claim
156 words
A web break Detector system comprising A. two or more sensors for sensing web, each said sensor emitting an output signal when it detects the absence of web, B. means for positioning said sensors along a web path, c. indicating means corresponding to each sensor for indicating the detection by that sensor of the absence of web, and D. means for comparing the times of occurrence of said output signals, said comparing means applying a first signal to the indicating means corresponding to the sensor which first detects the absence of web and simultaneously applying a second signal to the indicating means corresponding to the sensors which subsequently detect the absence of web so that the indicating means automatically and simultaneously provide a display which distinguishes between the location in the web path where the absence of web was first detected and the locations in the web path where the absence of web was subsequently detected.
Claim 3
Dependent Claim
55 words
The web break detector system defined in claim 1 and further including means for inhibiting the output signal from each sensor until said sensor detects web for a predetermined time so that any sensor positioned at a portion of the web path where web is not routed cannot signal the presence or absence of web.
Claim 4
Dependent Claim
47 words
a rectangular array of two terminal switches arranged in columns and rows, the number of switches in each column corresponding to the number of monitoring stations in the system, and the number of switches in each row corresponding to the number of web strikers in the system,
Claim 5
Dependent Claim
47 words
a rectangular array of two terminal switches arranged in columns and rows, the number of switches in each column corresponding to the number of monitoring stations in the system, and the number of switches in each row corresponding to the number of web strikers in the system,
Claim 6
Dependent Claim
37 words
The web break detector system defined in claim 1 and further including means responsive to an output signal from any sensor for generating an emergency stop signal for stopping the machinery through which the web is routed.
Claim 7
Dependent Claim
19 words
means for applying the output signals from said stations to one terminal of different switches in a switch column,
Claim 8
Dependent Claim
19 words
means for applying the output signals from said stations to one terminal of different switches in a switch column,
Claim 9
Dependent Claim
38 words
The web break detector system defined in claim 1 and further including web striker control means responsive to the output signal from any sensor for generating a signal to actuate web striker means positioned adjacent the web path.
Claim 10
Dependent Claim
45 words
means for connecting the other terminal of switches in a said row to different ones of said conductors so that by turning on selected ones of said switches, the signals from said monitoring stations can be applied variously to selected one of said conductors, and
Claim 11
Dependent Claim
45 words
means for connecting the other terminal of switches in a said row to different ones of said conductors so that by turning on selected ones of said switches, the signals from said monitoring stations can be applied variously to selected one of said conductors, and
Claim 12
Dependent Claim
9 words
means for electrically isolating each switch from the others.
Claim 13
Dependent Claim
9 words
means for electrically isolating each switch from the others.
Claim 14
Dependent Claim
46 words
The web break detector system defined in claim 4 wherein the striker control means include A. electrical conductors for connection to one or more web strikers disposed along the web path, and B. means for coupling the output signal from any sensor selectively to the conductors.
Claim 15
Dependent Claim
96 words
A web break detector system comprising A. one or more monitoring stations for sensing web, each said station emitting a first output signal when it detects the presence of web for a predetermined time and a second output signal when it detects the absence of web after said time, B. means for positioning said stations along a web path, and C. indicating means corresponding to each station and responsive to its first signal for indicating presence of web at that station and responsive to its second signal for indicating the absence of web at that station.
Claim 16
Dependent Claim
96 words
A web break detector system comprising A. one or more monitoring stations for sensing web, each said station emitting a first output signal when it detects the presence of web for a predetermined time and a second output signal when it detects the absence of web after said time, B. means for positioning said stations along a web path, and C. indicating means corresponding to each station and responsive to its first signal for indicating presence of web at that station and responsive to its second signal for indicating the absence of web at that station.
Claim 17
Dependent Claim
44 words
The web break detector system defined in claim 6 wherein a station comprises two or more noncontacting-type web detectors, any of which provide the station output signals, said detectors being spaced apart so that the station monitors the full width of the web path.
Claim 18
Dependent Claim
79 words
A web break detector system comprising A. web sensing means for monitoring web in a web path and producing an output signal in response to the absence of web, and B. means connected electrically to the sensing means for inhibiting the output signal until said sensing means sense web for a predetermined time so that sensing means positioned at a portion of the web path where web is not routed does not signal the presence or absence of web.
Claim 19
Dependent Claim
79 words
A web break detector system comprising A. web sensing means for monitoring web in a web path and producing an output signal in response to the absence of web, and B. means connected electrically to the sensing means for inhibiting the output signal until said sensing means sense web for a predetermined time so that sensing means positioned at a portion of the web path where web is not routed does not signal the presence or absence of web.
Claim 20
Dependent Claim
46 words
The system defined in claim 8 and further including A. means defining a web path, and B. means for positioning the sensing means at a selected location along the web path so that they indicate the absence of web at that location after said predetermined time.
Claim 21
Dependent Claim
54 words
The system defined in claim 9 and further including A. two or more of said sensing means positioned at selected locations along the web path, and B. indicating means responsive to the second condition of each of the sensing means so as to indicate the status of web at each of the selected locations.
Claim 22
Dependent Claim
71 words
The system defined in claim 10 and further including A. means for determining which of the two sensing means first assumed the second condition, and B. means responsive to the determining means for causing the indicating means to substantially simultaneously indicate by a first indicator the location where the absence of web was first detected and by a second different indicator the location where the absence of web was subsequently detected.
Claim 23
Dependent Claim
140 words
A web break detector system comprising A. two or more sensors for sensing web, each said sensor emitting an output signal when it detects the absence of web, B. means for positioning said sensors along a web path, C. indicating means corresponding to each sensor for indicating the detection by that sensor of the absence of web, D. means for comparing the times of occurrence of said output signal and applying a first signal to the indicating means corresponding to the sensor which first detects the absence of web so as to indicate the location in the web path where the absence of web was first detected, and E. web striker control means responsive to the output signal from any sensor for generating a signal to actuate web striker means positioned adjacent the web path, said striker control means including
Claim 24
Dependent Claim
140 words
A web break detector system comprising A. two or more sensors for sensing web, each said sensor emitting an output signal when it detects the absence of web, B. means for positioning said sensors along a web path, C. indicating means corresponding to each sensor for indicating the detection by that sensor of the absence of web, D. means for comparing the times of occurrence of said output signal and applying a first signal to the indicating means corresponding to the sensor which first detects the absence of web so as to indicate the location in the web path where the absence of web was first detected, and E. web striker control means responsive to the output signal from any sensor for generating a signal to actuate web striker means positioned adjacent the web path, said striker control means including
Claim 25
Dependent Claim
51 words
The web break detector system defined in claim 12 wherein each switch comprises A. a socket having a pair of conductor segments electrically insulated from one another, and B. a diode for insertion into the socket to make an electrical connection between said pair of segments, while providing the electrical isolation.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |