Patent US4081671A successfully refreshed from Google Patents.
US4081671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric line follower
Assignee: Messer Griesheim GmbH
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Filing: 1976-08-05
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Granted: 1978-03-28
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Expires: 1996-08-05
Abstract
Abstract An arrangement for cutting workpieces with a scanning device having a signalling photoresistor which detects markings, with an attached control device which contains a first timing element to which a switch for reducing the rate of speed is connected includes an OR-element connected between the first timing element and the switch with a further timing element connected by means of an AND-element to the input and output of the timing element with the input of the further timing element being connected to the output of the AND-element and the output of the further timing element being operationally connected to the input of the OR-element.
Inventors
- 👤 Dietrich Bohme
- 👤 Gunter Hellmut Schumann
- 👤 Gunter Hahn
- 👤 Rolf Jung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:53
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/127; B23Q35/128
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
In an arrangement for cutting workpieces with a scanning device which includes a signalling photo-detector for detecting markings and with an attached control device which contains a first timing element to which is connected a switch for switching to a reduced rate of feed, the improvement being an OR-element connected between said first timing element and said switch, a further timing element being connected by means of an AND-element to the input and the output of said first timing element, the input of said further timing element being connected to the output of said AND-element, and the output of said further timing element being operationally connected to an input of said OR-element.
Claim 2
Dependent Claim
112 words
In an arrangement for cutting workpieces with a scanning device which includes a signalling photo-detector for detecting markings and with an attached control device which contains a first timing element to which is connected a switch for switching to a reduced rate of feed, the improvement being an OR-element connected between said first timing element and said switch, a further timing element being connected by means of an AND-element to the input and the output of said first timing element, the input of said further timing element being connected to the output of said AND-element, and the output of said further timing element being operationally connected to an input of said OR-element.
Claim 3
Dependent Claim
22 words
Arrangement according to claim 1, characterized by a further input of the OR-element being connected to the output of the signalling photodetector.
Claim 4
Dependent Claim
24 words
Arrangement according to claim 2, characterized by the output of an automatic initial cut control being attached to an other input of the OR-element.
Claim 5
Dependent Claim
24 words
Arrangement according to claim 1, characterized by the output of an automatic initial cut control being attached to an other input of the OR-element.
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) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |