US3568904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sample data web and strip guide control system
Assignee: GPE Controls Inc
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Filing: 1969-08-01
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Granted: 1971-03-09
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Expires: 1989-08-01
Abstract
Abstract Control system for guiding a traveling web or strip to facilitate the performance of work on the web or strip to provide strip positioning at a location remote from the strip actuator by employing a movable sensor adjacent the actuator modulating the actuator in response to a set point, and a stationary sensor at the control point generating a time sampled signal to the movable sensor for changing the set point in response to the position of the strip at the control point.
Inventors
- 👤 Robert S Kurz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:17
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/02; B65H23/032; B65H23/0326
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
109 words
An apparatus for guiding a traveling strip comprising an actuator for changing the lateral position of the strip, a first edge sensor adjacent said actuator having a movable set point and driving said actuator to guide the lateral position of the strip in response to said set point, a second edge sensor at a control point remotely located downstream from said first edge sensor having a fixed set point, means measurinG the traveling strip, and means responding to the second edge sensor and the measuring means to change the position of the set point of the first sensor and correct for error in strip position at the control point.
Claim 2
Independent Claim
109 words
An apparatus for guiding a traveling strip comprising an actuator for changing the lateral position of the strip, a first edge sensor adjacent said actuator having a movable set point and driving said actuator to guide the lateral position of the strip in response to said set point, a second edge sensor at a control point remotely located downstream from said first edge sensor having a fixed set point, means measurinG the traveling strip, and means responding to the second edge sensor and the measuring means to change the position of the set point of the first sensor and correct for error in strip position at the control point.
Claim 3
Dependent Claim
18 words
An apparatus as defined in claim 1, wherein said edge sensors respond to one edge of the strip.
Claim 4
Dependent Claim
23 words
An apparatus as defined in claim 1, wherein said edge sensors respond to both edges of the strip to effectively centerguide the strip.
Claim 5
Dependent Claim
35 words
An apparatus as defined in claim 1, wherein said measuring means includes a roll driven by said strip, and a pulse generator driven by the roll to provide a pulse rate proportional to strip speed.
Claim 6
Dependent Claim
24 words
An apparatus as defined in claim 1, wherein said means responding to the second edge sensor and the measuring means includes a gating circuit.
Claim 7
Dependent Claim
25 words
An apparatus as defined in claim 4, and wherein said means responding to the second edge sensor and the measuring means includes a gating circuit.
Claim 8
Independent Claim
112 words
An apparatus for guiding a traveling strip comprising an actuator for changing the lateral position of the strip, a movable edge sensor adjacent said actuator, means driving said actuator to guide the lateral position of the strip in response to a set point of the sensor, a stationary edge sensor at a control point remotely located downstream from the movable sensor, means measuring the traveling strip, and means responding to a set point of the stationary sensor and a signal from the measuring means pursuant to a predetermined length of traveling strip to change the position of the movable sensor and correct for error in the strip position at the control point.
Claim 9
Independent Claim
112 words
An apparatus for guiding a traveling strip comprising an actuator for changing the lateral position of the strip, a movable edge sensor adjacent said actuator, means driving said actuator to guide the lateral position of the strip in response to a set point of the sensor, a stationary edge sensor at a control point remotely located downstream from the movable sensor, means measuring the traveling strip, and means responding to a set point of the stationary sensor and a signal from the measuring means pursuant to a predetermined length of traveling strip to change the position of the movable sensor and correct for error in the strip position at the control point.
Claim 10
Dependent Claim
18 words
An apparatus as defined in claim 7, wherein said edge sensors respond to one edge of the strip.
Claim 11
Dependent Claim
23 words
An apparatus as defined in claim 7, wherein said edge sensors respond to both edges of the strip to effectively centerguide the strip.
Claim 12
Dependent Claim
53 words
An apparatus as defined in claim 7, wherein said measuring means includes a roll driven by said strip, and a pulse generator driven by the roll to provide a pulse rate proportional to strip speed, and wherein said means responding to the second edge sensor and the measuring means includes a gating circuit.
Claim 13
Dependent Claim
122 words
A control system for guiding a travelling web or strip comprising, a primary control loop having an actuator for changing the lateral position of the web or strip and an edge sensor adjacent to the actuator having a movable set point and driving said actuator to guide the lateral position of the strip in response to the set point, a second control loop including an edge sensor located at a control point downstream from the primary control loop sensor, means for measuring the travelling web or strip, and means responding to said second control loop sensor and the measuring means to change the set point of the primary control loop sensor and correct for error in strip position at the control point.
Claim 14
Dependent Claim
122 words
A control system for guiding a travelling web or strip comprising, a primary control loop having an actuator for changing the lateral position of the web or strip and an edge sensor adjacent to the actuator having a movable set point and driving said actuator to guide the lateral position of the strip in response to the set point, a second control loop including an edge sensor located at a control point downstream from the primary control loop sensor, means for measuring the travelling web or strip, and means responding to said second control loop sensor and the measuring means to change the set point of the primary control loop sensor and correct for error in strip position at the control point.
References Cited (Backward Citations)
US3039483A
Cited
US3323740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |