US4980569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Security paper verification device
Assignee: Crane and Co Inc
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Filing: 1990-03-05
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Granted: 1990-12-25
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Expires: 2010-03-05
Abstract
Abstract A photodiode and phototransistor are positioned on one side of a document subjected to verification for authenticity under both transmitted and reflected light. A corresponding photodiode and phototransistor on the opposite side of the document are arranged for receiving the light transmitted through the currency if the security feature is not present. A logic circuit determines the presence or absence of the security feature and correspondingly provides visual or audible indication thereof. The photodiodes, phototransistors and circuit are arranged within an enclosure that is attached to a currency receiving device such as a cash register. The visual or audible indicators are mounted on the cash register for immediate indication of the currency verification to the cashier.
Inventors
- 👤 Timothy T. Crane
- 👤 Richard A. Menelly
- 👤 Robert J. Danek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:27
CPC Classifications
G; G07; G07D; G07D7/00; G07D7/06; G07D7/12; G07D7/128
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
169 words
Apparatus for determining the presence of security threads in paper comprising: means for receiving an edge of a paper containing a security thread; a first light source on one side of said edge providing first illumination to said one side; a second light source on an opposite side of said edge providing second illumination to said opposite side; a first light detector on said one side receiving first reflected light from said first light source and second transmitted light from said second light source; a second light detector on said opposite side receiving second reflected light from said second light source and first transmitted light from said first light source; and circuit means connected with said first light source and detector and said second light source and detector whereby said circuit provides a first output signal when no reflected or transmitted light is received by said first and second light detectors and a second output signal when reflected or transmitted light is received by said first or second detectors.
Claim 2
Dependent Claim
169 words
Apparatus for determining the presence of security threads in paper comprising: means for receiving an edge of a paper containing a security thread; a first light source on one side of said edge providing first illumination to said one side; a second light source on an opposite side of said edge providing second illumination to said opposite side; a first light detector on said one side receiving first reflected light from said first light source and second transmitted light from said second light source; a second light detector on said opposite side receiving second reflected light from said second light source and first transmitted light from said first light source; and circuit means connected with said first light source and detector and said second light source and detector whereby said circuit provides a first output signal when no reflected or transmitted light is received by said first and second light detectors and a second output signal when reflected or transmitted light is received by said first or second detectors.
Claim 3
Dependent Claim
16 words
The apparatus of claim 1 wherein said first and second light source comprise light emitting diodes.
Claim 4
Independent Claim
13 words
The apparatus of claim wherein said first and second light detectors comprise phototransistors.
Claim 5
Dependent Claim
21 words
The apparatus of claim 1 wherein said receiving means comprises a slotted container adapted to receive said edge within said slot.
Claim 6
Dependent Claim
21 words
The apparatus of claim 1 wherein said first and second light sources and detectors are mounted on a printed wire board.
Claim 7
Dependent Claim
18 words
The apparatus of claim 5 including a first optical fiber intermediate said first light source and said edge.
Claim 8
Dependent Claim
35 words
The apparatus of claim 6 wherein said optical fiber is arranged at a predetermined angle to a first surface and said first light detector is arranged at said same angle relative to said first surface.
Claim 9
Dependent Claim
20 words
The apparatus of claim 1 wherein said paper comprises currency including a rectangular printed part and a perimetric unprinted part.
Claim 10
Dependent Claim
13 words
The apparatus of claim 8 wherein said edge comprises said perimetric unprinted part.
Claim 11
Dependent Claim
23 words
The apparatus of claim 1 wherein said circuit means comprises a pair of inverter GATES connected with said first and second light sources.
Claim 12
Dependent Claim
14 words
The apparatus of claim 10 including a NOR GATE connected to said inverter GATES.
Claim 13
Dependent Claim
25 words
The apparatus of claim 1 including a pair of indicator lamps connected with said circuit means for providing indication of said first and second signals.
Claim 14
Dependent Claim
18 words
The apparatus of claim 5 wherein said printed wire board is slotted to fit within said slotted container.
Claim 15
Dependent Claim
15 words
The apparatus of claim 5 wherein said slotted container is attached to a cash receiver.
Claim 16
Dependent Claim
13 words
The apparatus of claim 14 wherein said cash receiver comprises a cash register.
Claim 17
Dependent Claim
15 words
The apparatus of claim 14 wherein said indicator lamps are mounted on said cash register.
Claim 18
Dependent Claim
34 words
The apparatus of claim 16 including electromagnetic means connecting with a cash drawer on said cash register to prevent operation of said cash drawer when said second signal is outputted from said comparator means.
Claim 19
Dependent Claim
23 words
The apparatus of claim 17 including means for determining the position of said security thread relative to an end of said currency paper.
Claim 20
Dependent Claim
170 words
Apparatus for determining the presence of security threads in paper comprising: means for receiving an edge of a paper containing a security thread; a first light source on one side of said edge providing first illumination to said one side; a second light source on an opposite side of said edge providing second illumination to said opposite side; a first light detector on said one side receiving first reflected light from said first light source and second transmitted light from said second light source; a second light detector on said opposite side receiving second reflected light from said second light source and first transmitted light from said first light source; and circuit means connected with said first light source and detector and said second light source and detector whereby said circuit provides a first output signal when no reflected and no transmitted light is received by said first and second light detectors and a second output signal when reflected or transmitted light is received by said first and second detectors.
Claim 21
Dependent Claim
170 words
Apparatus for determining the presence of security threads in paper comprising: means for receiving an edge of a paper containing a security thread; a first light source on one side of said edge providing first illumination to said one side; a second light source on an opposite side of said edge providing second illumination to said opposite side; a first light detector on said one side receiving first reflected light from said first light source and second transmitted light from said second light source; a second light detector on said opposite side receiving second reflected light from said second light source and first transmitted light from said first light source; and circuit means connected with said first light source and detector and said second light source and detector whereby said circuit provides a first output signal when no reflected and no transmitted light is received by said first and second light detectors and a second output signal when reflected or transmitted light is received by said first and second detectors.
Claim 22
Independent Claim
104 words
A method for determining the presence of a security thread within currency paper comprising the steps of: providing a first light source on one side of a currency paper containing a security thread; providing a second light source on an opposite side of said currency paper; arranging a first light detector on said one side; arranging a second light detector on said opposite side; providing a first output signal when no reflected or transmitted light is received by said first and second light detector and providing a second output signal when reflected or transmitted light is received by said first or second light detectors.
Claim 23
Independent Claim
104 words
A method for determining the presence of a security thread within currency paper comprising the steps of: providing a first light source on one side of a currency paper containing a security thread; providing a second light source on an opposite side of said currency paper; arranging a first light detector on said one side; arranging a second light detector on said opposite side; providing a first output signal when no reflected or transmitted light is received by said first and second light detector and providing a second output signal when reflected or transmitted light is received by said first or second light detectors.
Claim 24
Independent Claim
104 words
A method for determining the presence of a security thread within currency paper comprising the steps of: providing a first light source on one side of a currency paper containing a security thread; providing a second light source on an opposite side of said currency paper; arranging a first light detector on said one side; arranging a second light detector on said opposite side; providing a first output signal when no reflected or transmitted light is received by said first and second light detectors and providing a second output signal when reflected or transmitted light is received by said first and second light detectors.
Claim 25
Independent Claim
104 words
A method for determining the presence of a security thread within currency paper comprising the steps of: providing a first light source on one side of a currency paper containing a security thread; providing a second light source on an opposite side of said currency paper; arranging a first light detector on said one side; arranging a second light detector on said opposite side; providing a first output signal when no reflected or transmitted light is received by said first and second light detectors and providing a second output signal when reflected or transmitted light is received by said first and second light detectors.
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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) | 1993-12-24 | 1994-06-25 | 1994-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-24 | 1998-06-25 | 1998-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-24 | 2002-06-25 | 2002-12-25 | $7700.00 | Window Closed / Lapsed |