Digital burette and method for displaying the dose volume in...

Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition

Reexamination Certificate

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Details

C422S105000, C422S106000, C422S107000, C422S108000, C436S180000, C073S864010

Reexamination Certificate

active

10470943

ABSTRACT:
The invention relates to a digital burette having a manual drive for suctioning and applying an adjustable dose volume, a gear unit connected downstream and a digital display device controlled thereby for setting the dose volume. The control comprises an incremental encoder which is functionally connected to the gear unit, at least one sensor for detecting the signals produced by the incremental encoder and a processor connected to the sensor and the display device for calculating the dose volume corresponding to the number of signals. The incremental encoder is, in particular, a sector disc with two groups of sectors of different magnetic field strength disposed alternately in the peripheral direction of the sector disc. A sensor detects the number of turns of the sector disc. To save energy, the power supply of the burette is ensured by a solar cell and two spaced sensors are provided for detecting the number of turns of the sector disc to reduce the clock frequency of the processor for a same measuring accuracy. The invention also relates to a method for displaying the dose volume of such a digital burette.

REFERENCES:
patent: 4754418 (1988-06-01), Hara
patent: 4760939 (1988-08-01), Ball
patent: 4815632 (1989-03-01), Ball et al.
patent: 5108703 (1992-04-01), Pfost et al.
patent: 5938076 (1999-08-01), Ganzeboom
patent: 5961048 (1999-10-01), Prieschl et al.
patent: 6055509 (2000-04-01), Powell
patent: 6209752 (2001-04-01), Mitchell
patent: 6339897 (2002-01-01), Hayes et al.
patent: 6824738 (2004-11-01), Neeper et al.
patent: 2002/0134176 (2002-09-01), Bigus
patent: 2004/0147042 (2004-07-01), Gratzl et al.
patent: 38 17 705 (1988-12-01), None
patent: 195 13 023 (1996-10-01), None
patent: 0 559 223 (1993-09-01), None
patent: 0 762 083 (1997-03-01), None
patent: 2 054 299 (1981-02-01), None
patent: 2 174 459 (1986-11-01), None
www.news.thomasnet.com/fullstory/7964/612.
www.cherrycorp.com/english/sensors/op—reed.htm.
www.arun-electronics.co.uk/sensor—reed.htm.
www.meder.com/en/index.php?page=129&prod=re.

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