US4715223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for testing properties of coins
Assignee: Digital Kienzle Computersysteme GmbH and Co KG
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Filing: 1985-03-26
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Granted: 1987-12-29
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Expires: 2005-03-26
Abstract
Abstract A device for testing the magnetic properties of coins in coin operated apparatus such as parking meters, used in conjunction with a coin diameter testing device. The device includes a double arm rocker lever provided on a side wall of a coin guiding duct. A first arm of the rocker lever is equipped with a permanent magnet and the latter extends through an opening of the side wall into the range of a coin which has been inserted into the coin guiding duct and which temporarily rests on a coil support. A second arm of the rocker lever includes a locking bracket which can be controlled so as to be in and out of engagement with a testing segment required for the test for determining the diameter of coins.
Inventors
- 👤 Bernhard Kaiser
- 👤 Ortwin Wokoeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:31
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/24; G07D; G07D5/00; G07D5/02; G07D5/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
167 words
Device for testing for magnetism and diameter coins in coin operated apparatus such as parking meters, comprising an upwardly extending coin guiding duct having an upwardly extending side wall and a lower end, a coin support means provided at said lower end of said coin guiding duct, a rocker lever having first and second arms, an adjustable set screw attaching said rocker lever to said side wall, a testing segment for carrying out a coin diameter testing step when a coin rests on said coin support means, a permanent magnet mounted on said first arm of said rocker lever, said magnet extending to the range of a coin resting on said support means, so that the magnet is attracted by the coin if the coin is ferromagnetic, whereby said first arm of said rocker is moved toward the coin, said second arm comprising a locking bracket capable of engaging or being disengaged from said testing segment, depending on whether said first arm is moved toward the coin.
Claim 2
Dependent Claim
167 words
Device for testing for magnetism and diameter coins in coin operated apparatus such as parking meters, comprising an upwardly extending coin guiding duct having an upwardly extending side wall and a lower end, a coin support means provided at said lower end of said coin guiding duct, a rocker lever having first and second arms, an adjustable set screw attaching said rocker lever to said side wall, a testing segment for carrying out a coin diameter testing step when a coin rests on said coin support means, a permanent magnet mounted on said first arm of said rocker lever, said magnet extending to the range of a coin resting on said support means, so that the magnet is attracted by the coin if the coin is ferromagnetic, whereby said first arm of said rocker is moved toward the coin, said second arm comprising a locking bracket capable of engaging or being disengaged from said testing segment, depending on whether said first arm is moved toward the coin.
Claim 3
Dependent Claim
30 words
Device according to claim 1, wherein said side wall of said coin guiding duct includes hook-shaped support stirrups, and said rocker lever has two lugs received in said support stirrups.
Claim 4
Dependent Claim
99 words
Device accordng to claims 1 or 2, wherein said rocker lever is movable to first and second positions of operation in dependence upon the adjustment of said set screw, wherein said first position is the initial position and said second position is the final position, a compression spring provided between said rocker lever and said side wall of said coin guiding duct, said spring biasing said rocker lever into said first position, wherein said rocker lever assumes said second position when moved by attraction forces generated by said permanent magnet when a ferromagnetic coin rests on said coin support.
Claim 5
Dependent Claim
78 words
Device according to claim 3, wherein said testing segment includes a locking projection, and said first position of said rocker lever is adjustable by means of said set screw so that said locking bracket is positioned in front of said locking projection and the movement of said testing segment is blocked, and wherein said testing segment is released when said permanent magnet is attracted by a ferromagnetic coin and said locking bracket is moved from its blocking position.
Claim 6
Dependent Claim
80 words
Device according to claim 3, wherein said testing segment defines a recess and said rocker lever is adjustable by means of said set screw so that said locking bracket engages in said recess of said testing segment, and wherein said testing segment includes another locking projection, and said rocker lever is moved out of engagement with said recess of said testing segment and into contact with said another locking projection when said permanent magnet is attracted by a ferromagnetic coin.
Claim 7
Dependent Claim
60 words
Device according to claims 1 or 2, wherein said rocker lever defines a bore open to the side facing said coin support means, said bore receiving said permanent magnet resulting in a clamping action, so that the distance between said coin and said permanent magnet is adjustable and an adjustable air gap remains between said coin and said permanent magnet.
Claim 8
Dependent Claim
68 words
Device according to claims 1 or 2, wherein said rocker lever comprises a control finger and said coin guiding duct comprises a pivotable coin lock with a bracket, wherein said control finger and said bracket interact so that when said coin lock is pivoted, said rocker lever is moved into said first position in which said coin can drop downwardly unimpeded by said magnet into a collection container.
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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) | 1990-12-28 | 1991-06-29 | 1991-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-28 | 1995-06-29 | 1995-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-28 | 1999-06-29 | 1999-12-29 | $7700.00 | Window Closed / Lapsed |