Patent US3569644A successfully refreshed from Google Patents.
US3569644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bill trap
Assignee: Basic Inc
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Filing: 1969-07-14
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Granted: 1971-03-09
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Expires: 1989-07-14
Abstract
Abstract A device for detecting the removal of the last bill in a stack of paper currency for signalling or alarm purposes consisting of a magnet assembly supported in a ''''set'''' position by the last bill, which drops under the influence of gravity upon removal of the bill, to a position adjacent a pair of reed switches, causing their actuation and closure of electrical circuits. In one embodiment a double torsion spring is utilized to aid in ''''setting'''' the magnet assembly and to restrain the bill against accidental removal.
Inventors
- 👤 Richard D Brugger
- 👤 Neal B Fourspring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:18
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/02; G08B13/14; G08B13/149; G07; G07G; G07G1/00; G07G1/0018; G07G1/0027; G07G3/00; G07G3/003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
Apparatus for detecting the removal of the last item in a stack of paper currency and the like comprising a platform adapted for support of the stack of currency, means on said platform for supporting a portion of the currency, said means overlying a part of the platform for separation of at least one item of the currency and forming a slot with said platform for receipt of the forward edge of such item, a magnet assembly adapted for movement through said slot between first and second positions located within said support means and said platform, respectively, said magnet assembly being retained in the first position in said support means by the presence of the item of currency in said slot and movable to the second position within said platform under the influence of gravity when the item is removed, and a reed switch arrangement mounted in said platform adjacent the second position of said magnet assembly and adapted for actuation by the presence of the magnetic field of said magnet assembly for completion of an electrical circuit.
Claim 2
Dependent Claim
178 words
Apparatus for detecting the removal of the last item in a stack of paper currency and the like comprising a platform adapted for support of the stack of currency, means on said platform for supporting a portion of the currency, said means overlying a part of the platform for separation of at least one item of the currency and forming a slot with said platform for receipt of the forward edge of such item, a magnet assembly adapted for movement through said slot between first and second positions located within said support means and said platform, respectively, said magnet assembly being retained in the first position in said support means by the presence of the item of currency in said slot and movable to the second position within said platform under the influence of gravity when the item is removed, and a reed switch arrangement mounted in said platform adjacent the second position of said magnet assembly and adapted for actuation by the presence of the magnetic field of said magnet assembly for completion of an electrical circuit.
Claim 3
Dependent Claim
32 words
Apparatus as set forth in claim 1 further including guide means on said platform and said supporting means for restricting the movement of said magnet assembly to such first and second positions.
Claim 4
Dependent Claim
47 words
Apparatus as set forth in claim 2 wherein said guide means comprises first and second slots in said supporting means and said platform respectively, said first and second slots being vertically oriented, one above the other and adapted for receipt of a portion of said magnet assembly.
Claim 5
Dependent Claim
42 words
Apparatus as set forth in claim 1 further including means movably mounted on said platform for releasably clamping the item of currency in position on said platform and bias means operatively connected with said clamping means for urging same against said platform.
Claim 6
Dependent Claim
43 words
Apparatus as set forth in claim 4 further including means on said clamping means for engaging said magnet assembly, said engaging means being adapted to be moved with said clamping means to lift said magnet assembly from the second to the first position.
Claim 7
Dependent Claim
96 words
Apparatus as set forth in claim 5 wherein said clamping means, said engaging means and said bias means comprise a double torsion spring having a torsion section, a double arm and connecting section, said torsion section being fixed with respect to said platform, said connecting arm being adapted to transversely overlie said platform and said double arm being connected between said torsion section and said connecting section and extending beneath a portion of said magnet assembly, closely adjacent the sides of said platform, thereby to partially fold and secure the item of currency against said platform.
References Cited (Backward Citations)
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Cited
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US3247502A
Cited
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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) | 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 |