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US4898253A Expired / Lapsed US ⏱️ 0.0 years remaining

Electronic balance for dosing

Assignee: Sartorius AG
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Filing: 1989-05-30
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Granted: 1990-02-06
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Expires: 2009-05-30
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Abstract

Abstract An electronic balance for dosing, with a measured value receiver, a digital signal processing unit, a digital entry keyboard for entering the theoretical value of a dosing, with a theoretical-weight memory and with a digital display unit with several positions after the decimal point, that switching means are present which determine the highest-value decade in which a number in the display is not equal to zero and that these switching means regulate the decoding of the display in such a manner that all zeros to the left of this decade up to the units decade are represented as a small zero "o" whereas prezeros in the 10 decade, 100 decade, etc. are entirely suppressed in a known manner. This makes possible a quasi-analog representation of the measured value which is attained in the units decade, the 10 decade, the 100 decade, etc. by means of the known suppression of prezeros even in the case of balance displays with positions after the decimal point.

Inventors

  • 👤 Christian Oldendorf
  • 👤 Franz-Josef Melcher
  • 👤 Christoph Berg

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 12:57
CPC Classifications
G; G01; G01G; G01G23/00; G01G23/18; G01G23/36; G01G23/37; G01G23/3707; G01G23/3721; G01G19/00; G01G19/64; G01G23/32

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 129 words
An electronic balance for dosing, with a measured value receiver (2), a digital signal processing unit (4,4'), a digital entry keyboard (13) for entering the theoretical value of a dosing, with a theoretical-weight memory (9) and with a digital display unit (5) with several positions after the decimal point, characterized in that switching means (8) are present which determine the highest-value decade in which a number in the display (5) is not equal to zero and that these switching means (8) regulate the decoding (6) of the display in such a manner that all zeros to the left of this decade up to the units decade are represented as a small zero "o" whereas prezeros in the 10 decade, 100 decade, etc. are entirely suppressed in a known manner.
Claim 2
Dependent Claim 129 words
An electronic balance for dosing, with a measured value receiver (2), a digital signal processing unit (4,4'), a digital entry keyboard (13) for entering the theoretical value of a dosing, with a theoretical-weight memory (9) and with a digital display unit (5) with several positions after the decimal point, characterized in that switching means (8) are present which determine the highest-value decade in which a number in the display (5) is not equal to zero and that these switching means (8) regulate the decoding (6) of the display in such a manner that all zeros to the left of this decade up to the units decade are represented as a small zero "o" whereas prezeros in the 10 decade, 100 decade, etc. are entirely suppressed in a known manner.
Claim 3
Dependent Claim 39 words
The electronic balance for dosing according to claim 1, wherein the switching means (8) is only activated if a theoretical weight has been entered into the theoretical-weight memory (9) and if the sign in the display (5) is negative.

References Cited (Backward Citations)

US4554988A Cited
US4650014A Cited
US4694922A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-02-05 1993-08-07 1994-02-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-02-05 1997-08-07 1998-02-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-02-05 2001-08-07 2002-02-06 $7700.00 Window Closed / Lapsed

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