US3576975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible counter with readout
Assignee: Individual
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Filing: 1968-06-14
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Granted: 1971-05-04
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Expires: 1988-06-14
Abstract
Abstract The invention describes apparatus for counting a sequence of events and for displaying the final count of that sequence. A number of magnetic cores are energized and deenergized sequentially to produce a changing magnetic field. Ferromagnetic plates on a rotatable cylinder are arranged such that the changing magnetic field exerts a force on the plates which results in rotation of the cylinder to place any of a series of characters imprinted on the periphery of the cylinder at a viewing panel. The cylinder may be rotated in either direction of changing the order of energization of the cores to correspond to either addition or subtraction.
Inventors
- 👤 Joachim A Maass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:27
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/08; G06M1/10; G06M1/102; G06M1/107
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
184 words
Apparatus comprising a two-pole permanent magnet, having first and second projecting members of magnetic material, said first projecting member being trident-shaped and being fixed to the first pole of said two-pole permanent magnet, said second projecting member being fixed to the second pole of said permanent magnet and spatially displaced from said first projecting member, so that a magnetic field is established in the space intermediate said projecting members, three currentcarrying coils wound on the prongs of said trident-shaped member, one of said coils wound on each of said prongs, a supporting axle, a hollow circular cylinder having characters on the perimeter thereof rotatably attached to said supporting axle, said cylinder having ferromagnetic plaques spatially disposed on the inner periphery of said cylinder, said cylinder being positioned adjacent said space intermediate said first and second projecting members such that said plaques will be rotated through said magnetic field, a series inductance-shunt capacitance transmission line having three inductance elements and three capacitance elements, said current-carrying coils forming the inductance elements thereof, said transmission line being responsive to an energizing signal originating from either end thereof.
Claim 2
Dependent Claim
184 words
Apparatus comprising a two-pole permanent magnet, having first and second projecting members of magnetic material, said first projecting member being trident-shaped and being fixed to the first pole of said two-pole permanent magnet, said second projecting member being fixed to the second pole of said permanent magnet and spatially displaced from said first projecting member, so that a magnetic field is established in the space intermediate said projecting members, three currentcarrying coils wound on the prongs of said trident-shaped member, one of said coils wound on each of said prongs, a supporting axle, a hollow circular cylinder having characters on the perimeter thereof rotatably attached to said supporting axle, said cylinder having ferromagnetic plaques spatially disposed on the inner periphery of said cylinder, said cylinder being positioned adjacent said space intermediate said first and second projecting members such that said plaques will be rotated through said magnetic field, a series inductance-shunt capacitance transmission line having three inductance elements and three capacitance elements, said current-carrying coils forming the inductance elements thereof, said transmission line being responsive to an energizing signal originating from either end thereof.
Claim 3
Dependent Claim
144 words
Apparatus for counting electrical signals comprising a plurality of magnetic pole pieces, said pole pieces forming a magnetic field, said one of said pole pieces having a magnetic polarity opposite to the polarity of said pole pieces having said current-carrying coils wound thereon indicia-bearing rotatable means having a plurality of magnets mounted thereon, means for disposing said rotatable means in said magnetic field, delay means including a series inductance-shunt capacitance transmission line, each said current-carrying coil connected in series and forming the series inductance elements of said transmission line, and means for applying input pulses to either end of said transmission line, whereby said coils are energized and deenergized sequentially by said pulses to produce a changing magnetic field which exerts a force on at least one of said magnets mounted on said rotatable means which in turn is rotated through a predetermined angle.
Claim 4
Dependent Claim
144 words
Apparatus for counting electrical signals comprising a plurality of magnetic pole pieces, said pole pieces forming a magnetic field, said one of said pole pieces having a magnetic polarity opposite to the polarity of said pole pieces having said current-carrying coils wound thereon indicia-bearing rotatable means having a plurality of magnets mounted thereon, means for disposing said rotatable means in said magnetic field, delay means including a series inductance-shunt capacitance transmission line, each said current-carrying coil connected in series and forming the series inductance elements of said transmission line, and means for applying input pulses to either end of said transmission line, whereby said coils are energized and deenergized sequentially by said pulses to produce a changing magnetic field which exerts a force on at least one of said magnets mounted on said rotatable means which in turn is rotated through a predetermined angle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |