US3741357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position controlling system
Assignee: International Business Machines Corp
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Filing: 1971-11-11
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Granted: 1973-06-26
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Expires: 1991-11-11
Abstract
Abstract A serial loop memory, such as a ring counter, for example, of capacity equal to the units of distance between a sensing station and a desired stopping station is operated in synchronism with a transport mechanism whenever an article in the transport system has been sensed and has not yet stopped. The complement in the loop memory is used as a feed-forward correction to modify the application of braking means to the transport system so that the brake application will take place at an appropriate time during the next document cycle.
Inventors
- 👤 G Krysiuk
- 👤 J Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:51
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/02; G06K13/06; G06K13/067
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
216 words
A position controlling system for accurately positioning movable mechanical means, comprising, in combination, a movable device to be operated in successive units of distance of substantially equal values, power means for operating said device, clutch means interposed between said device and said power means effective when energized to couple said device to said power means to thereby move said device through a plurality of successive units, brake means interposed between said clutch means and said device, effective when energized to stop the motion of said device, clutch and brake control means for selectively energizing said clutch means and said brake means to thereby put said device in motion or to stop said device, serial loop memory means having an output connected to said brake or clutch control means and having a capacity equal to the number of said units between a first sensing location and a stopping location for said device, a source of signals representative of said units, sensing means at said sensing location for initiating the entry of signals representing said units from said source to said memory means, and means for inhibiting the supply of signals from said source to said memory means, said memory means supplying an output to said control means when a predetermined count is reached in said memory means.
Claim 2
Dependent Claim
216 words
A position controlling system for accurately positioning movable mechanical means, comprising, in combination, a movable device to be operated in successive units of distance of substantially equal values, power means for operating said device, clutch means interposed between said device and said power means effective when energized to couple said device to said power means to thereby move said device through a plurality of successive units, brake means interposed between said clutch means and said device, effective when energized to stop the motion of said device, clutch and brake control means for selectively energizing said clutch means and said brake means to thereby put said device in motion or to stop said device, serial loop memory means having an output connected to said brake or clutch control means and having a capacity equal to the number of said units between a first sensing location and a stopping location for said device, a source of signals representative of said units, sensing means at said sensing location for initiating the entry of signals representing said units from said source to said memory means, and means for inhibiting the supply of signals from said source to said memory means, said memory means supplying an output to said control means when a predetermined count is reached in said memory means.
Claim 3
Dependent Claim
18 words
A position controlling system as claimed in claim 1, in which said memory means is a ring counter.
Claim 4
Dependent Claim
19 words
A position controlling system as claimed in claim 1, in which said movable device is a document transport system.
Claim 5
Dependent Claim
27 words
A position controlling system as claimed in claim 3, in which said sensing means comprises means for sensing the passage of a document at said sensing location.
Claim 6
Dependent Claim
24 words
A position controlling system as claimed in claim 4, in which said sensing means comprises means for detecting the leading edge of a document.
Claim 7
Dependent Claim
26 words
A position controlling system as claimed in claim 1, in which said source of signals comprises pulse generating means operated in synchronism with said movable device.
Claim 8
Dependent Claim
23 words
A position controlling system as claimed in claim 1, in which said source of signals comprises an emiTter coupled to said document transport.
References Cited (Backward Citations)
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Cited
US3224690A
Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |