CA1134640A - Combined level indicator and hydrometer - Google Patents

Combined level indicator and hydrometer

Info

Publication number
CA1134640A
CA1134640A CA000359847A CA359847A CA1134640A CA 1134640 A CA1134640 A CA 1134640A CA 000359847 A CA000359847 A CA 000359847A CA 359847 A CA359847 A CA 359847A CA 1134640 A CA1134640 A CA 1134640A
Authority
CA
Canada
Prior art keywords
chamber
float
liquid
hydrometer
level indicator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000359847A
Other languages
English (en)
French (fr)
Inventor
John F. Nelson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Application granted granted Critical
Publication of CA1134640A publication Critical patent/CA1134640A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284Electromagnetic waves
    • G01F23/292Light, e.g. infrared or ultraviolet
    • G01F23/2921Light, e.g. infrared or ultraviolet for discrete levels
    • G01F23/2922Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/10Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing bodies wholly or partially immersed in fluid materials
    • G01N9/12Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing bodies wholly or partially immersed in fluid materials by observing the depth of immersion of the bodies, e.g. hydrometers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Secondary Cells (AREA)
  • Level Indicators Using A Float (AREA)
CA000359847A 1979-09-27 1980-09-08 Combined level indicator and hydrometer Expired CA1134640A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US79,639 1979-09-27
US06/079,639 US4240282A (en) 1979-09-27 1979-09-27 Combined level indicator and hydrometer

Publications (1)

Publication Number Publication Date
CA1134640A true CA1134640A (en) 1982-11-02

Family

ID=22151833

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000359847A Expired CA1134640A (en) 1979-09-27 1980-09-08 Combined level indicator and hydrometer

Country Status (6)

Country Link
US (1) US4240282A (https=)
JP (1) JPS5657916A (https=)
BR (1) BR8006130A (https=)
CA (1) CA1134640A (https=)
FR (1) FR2466753A1 (https=)
GB (1) GB2060885A (https=)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3915475A1 (de) * 1989-05-11 1990-11-15 Siemens Ag Sensor fuer ladungsmessung bei akkumulatoren
JP2868235B2 (ja) * 1989-09-01 1999-03-10 三信工業株式会社 船舶推進機の排気構造
US4989453A (en) * 1989-11-06 1991-02-05 Alan Hiiesalu Battery condition indicator
US5900547A (en) * 1997-09-12 1999-05-04 Thermoprobe Inc. Differential level hydrometer
US6393910B1 (en) 2000-01-25 2002-05-28 Illinois Tool Works Inc. One-piece battery charge indicator cage
JP4717230B2 (ja) * 2001-02-22 2011-07-06 本田技研工業株式会社 燃料タンクにおける燃料満量液面視認装置
US7228737B2 (en) * 2004-08-06 2007-06-12 Illinois Tool Works Inc Hydrometer/fluid level sensor
US7430907B2 (en) 2004-08-06 2008-10-07 Illinois Tool Works Inc. Hydrometer/fluid level sensor
US20070240627A1 (en) * 2006-04-18 2007-10-18 Summer Mark J Fluid lever indicator protection sleeve
EP2064529A4 (en) * 2006-08-24 2010-12-22 Ducool Ltd ARRANGEMENT FOR MEASURING THE SPECIFIC DENSITY AND STATE OF A LIQUID
CN100546094C (zh) * 2007-11-08 2009-09-30 泉州市一鸣交通电器有限公司 一种电池电量显色器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3597973A (en) * 1969-09-08 1971-08-10 Illinois Tool Works Combined level indicator and hydrometer
US3597972A (en) * 1969-09-08 1971-08-10 Illinois Tool Works Combined level indicator and hydrometer
US3977908A (en) * 1972-10-17 1976-08-31 Shin-Kobe Electric Machinery Co., Ltd. Indicator in use with a lead storage battery for indicating the overdischarge of the same and the lowered level of the electrolyte therein
US3893339A (en) * 1974-03-18 1975-07-08 Illinois Tool Works Liquid level indicator
US3915753A (en) * 1974-03-18 1975-10-28 Illinois Tool Works Liquid indicator for a storage battery with a flame barrier vent filter
US3954010A (en) * 1975-04-25 1976-05-04 Illinois Tool Works Inc. Visual and electronic battery hydrometer
US4074025A (en) * 1976-03-29 1978-02-14 Miyagawa Kasei Industry Co., Ltd. Indicating device for storage battery

Also Published As

Publication number Publication date
US4240282A (en) 1980-12-23
GB2060885A (en) 1981-05-07
JPS5657916A (en) 1981-05-20
FR2466753B1 (https=) 1984-05-11
BR8006130A (pt) 1981-04-07
FR2466753A1 (fr) 1981-04-10

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Legal Events

Date Code Title Description
MKEX Expiry