US5096038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thread detector assembly
Assignee: De la Rue International Ltd
•
Filing: 1990-08-13
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Granted: 1992-03-17
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Expires: 2010-08-13
Abstract
Abstract A thread detector assembly for detecting an activated, elongate thread which is integral with a sheet comprises an elongate detector or set of detectors. A conveyor is provided to cause relative movement between a sheet and a detector. The detector or detectors extend at an acute angle to the thread in use whereby the thread is presented successively to different parts of the detector or detectors.
Inventors
- 👤 Michael Potter
- 👤 David C. Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:03
CPC Classifications
G; G07; G07D; G07D7/00; G07D7/04
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
90 words
In a thread detector assembly for detecting an activated, elongated thread which is integral with a sheet, and which comprises a plurality of spaced apart code portions each extending in a first direction, said assembly comprising: an elongated detector; and means for causing relative movement between said sheet and said detector, said relative movement being in a direction substantially perpendicular to said first direction; and said detector extending at an acute angle to said direction of relative movement whereby the thread is presented successively to different parts of said detector.
Claim 2
Dependent Claim
90 words
In a thread detector assembly for detecting an activated, elongated thread which is integral with a sheet, and which comprises a plurality of spaced apart code portions each extending in a first direction, said assembly comprising: an elongated detector; and means for causing relative movement between said sheet and said detector, said relative movement being in a direction substantially perpendicular to said first direction; and said detector extending at an acute angle to said direction of relative movement whereby the thread is presented successively to different parts of said detector.
Claim 3
Dependent Claim
18 words
An assembly according to claim 1, wherein said detector is adapted to detect magnetic properties of the thread.
Claim 4
Dependent Claim
18 words
An assembly according to claim 1, further comprising activation means for activating the sensed property of said thread.
Claim 5
Dependent Claim
16 words
An assembly according to claim 1, wherein said means for causing relative movement comprises a conveyor.
Claim 6
Dependent Claim
19 words
An assembly according to claim 1, wherein said detector extends at substantially 45° to said direction of relative movement.
Claim 7
Dependent Claim
27 words
An assembly according to claim 1, wherein said plurality of spaced apart code portions are each positioned along a common imaginary line extending in said first direction.
Claim 8
Independent Claim
101 words
A method of detecting an activated, elongated thread which is integral with a sheet, and which comprises a plurality of spaced apart code portions each extending in a first direction, said method comprising the steps of: causing relative movement between said sheet and an elongated detector in a direction substantially perpendicular to said first direction, said detector extending at an acute angle to said direction of relative movement, whereby said thread is presented successively to different parts of said detector; and detecting said code portions of said elongated thread as said thread is presented successively to different parts of said detector.
Claim 9
Independent Claim
101 words
A method of detecting an activated, elongated thread which is integral with a sheet, and which comprises a plurality of spaced apart code portions each extending in a first direction, said method comprising the steps of: causing relative movement between said sheet and an elongated detector in a direction substantially perpendicular to said first direction, said detector extending at an acute angle to said direction of relative movement, whereby said thread is presented successively to different parts of said detector; and detecting said code portions of said elongated thread as said thread is presented successively to different parts of said detector.
Claim 10
Dependent Claim
26 words
A method according to claim 7, wherein each of said spaced apart code portions are positioned along a common imaginary line extending in said first direction.
Claim 11
Dependent Claim
103 words
In a thread detector assembly for detecting an activated, elongate thread which is integral with a sheet and which comprises a plurality of spaced apart code portions each positioned along an imaginary line extending in a first direction, said assembly comprising: a set of elongated detectors arranged side-by-side; means for causing relative movement between said sheet and said detectors, said relative movement being in a direction substantially perpendicular to said first direction; and said detectors arranged side-by-side, each said detector extending at an acute angle to said direction of relative movement whereby each said detector detects a respective different part of said thread.
Claim 12
Dependent Claim
103 words
In a thread detector assembly for detecting an activated, elongate thread which is integral with a sheet and which comprises a plurality of spaced apart code portions each positioned along an imaginary line extending in a first direction, said assembly comprising: a set of elongated detectors arranged side-by-side; means for causing relative movement between said sheet and said detectors, said relative movement being in a direction substantially perpendicular to said first direction; and said detectors arranged side-by-side, each said detector extending at an acute angle to said direction of relative movement whereby each said detector detects a respective different part of said thread.
Claim 13
Dependent Claim
19 words
An assembly according to claim 9, wherein each of said detectors extends at substantially 45° to the first direction.
Claim 14
Dependent Claim
14 words
An assembly according to claim 9, wherein said set of detectors comprises 3 detectors.
Claim 15
Dependent Claim
14 words
An assembly according to claim 9, wherein said set of detectors comprises 4 detectors.
Claim 16
Dependent Claim
14 words
An assembly according to claim 9, wherein said set of detectors comprise 8 detectors.
Claim 17
Dependent Claim
26 words
An assembly according to claim 9, wherein each of said spaced apart code portions are positioned along a common imaginary line extending in said first direction.
Claim 18
Independent Claim
91 words
A method of detecting an activated, elongate thread which is integral with a sheet and which comprises a plurality of spaced apart code portions each extending in a first direction, said method comprising the step of causing relative movement between said sheet and a plurality of elongated detectors arranged side by side, said relative movement being in a direction substantially perpendicular to said first direction, each said detector extending at an acute angle to said direction of relative movement whereby each said detector detects a respective different part of said thread.
Claim 19
Independent Claim
91 words
A method of detecting an activated, elongate thread which is integral with a sheet and which comprises a plurality of spaced apart code portions each extending in a first direction, said method comprising the step of causing relative movement between said sheet and a plurality of elongated detectors arranged side by side, said relative movement being in a direction substantially perpendicular to said first direction, each said detector extending at an acute angle to said direction of relative movement whereby each said detector detects a respective different part of said thread.
Claim 20
Dependent Claim
27 words
A method according to claim 15, wherein said plurality of spaced apart code portions are each positioned along a common imaginary line extending in said first direction.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-17 | 1995-09-16 | 1996-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-17 | 1999-09-16 | 2000-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-17 | 2003-09-16 | 2004-03-17 | $7700.00 | Window Closed / Lapsed |