JPS57133320A - Non-circular gear and flowmeter thereby - Google Patents

Non-circular gear and flowmeter thereby

Info

Publication number
JPS57133320A
JPS57133320A JP1933881A JP1933881A JPS57133320A JP S57133320 A JPS57133320 A JP S57133320A JP 1933881 A JP1933881 A JP 1933881A JP 1933881 A JP1933881 A JP 1933881A JP S57133320 A JPS57133320 A JP S57133320A
Authority
JP
Japan
Prior art keywords
teeth
sections
pressure angle
contacting pressure
long period
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.)
Granted
Application number
JP1933881A
Other languages
Japanese (ja)
Other versions
JPH0139052B2 (en
Inventor
Koji Hotta
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.)
Oval Kiki Kogyo KK
Oval Engineering Co Ltd
Original Assignee
Oval Kiki Kogyo KK
Oval Engineering Co Ltd
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 Oval Kiki Kogyo KK, Oval Engineering Co Ltd filed Critical Oval Kiki Kogyo KK
Priority to JP1933881A priority Critical patent/JPS57133320A/en
Publication of JPS57133320A publication Critical patent/JPS57133320A/en
Publication of JPH0139052B2 publication Critical patent/JPH0139052B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F3/00—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
    • G01F3/02—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement
    • G01F3/04—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls
    • G01F3/06—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls comprising members rotating in a fluid-tight or substantially fluid-tight manner in a housing
    • G01F3/10—Geared or lobed impeller meters

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To make it possible to maintain measuring accuracy for a long period of time by reducing rotating resistance and improving durability, by providing, in the direction of rotation center, teeth to be cut in pitch curve configuration. CONSTITUTION:In teeth-cutting positions of all the teeth-equipped sections, and in the direction of rotation center to the maximum possibility, and by minimizing variation of teeth-contacting pressure angle, and also by taking care so as not to allow negative to occur, respectively different basic rack teeth are cut. And, for instance, odd-number teeth sections 1'-13' prevent increase in teeth-contacting pressure angle by using cycloid curve, and even-number teeth sections 2'-12' prevent occurrence of negative by using involute teeth. It is possible, by doing so, to provide all of the teeth sections 1'-13' with positive teeth-contacting pressure angle and improve durability by smoothening teeth- contact rotation, and therefore, it is possible to obtain a displacement flowmeter which has less rotation resistance and is able to maintain its measuring accuracy for a long period of time.
JP1933881A 1981-02-12 1981-02-12 Non-circular gear and flowmeter thereby Granted JPS57133320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1933881A JPS57133320A (en) 1981-02-12 1981-02-12 Non-circular gear and flowmeter thereby

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1933881A JPS57133320A (en) 1981-02-12 1981-02-12 Non-circular gear and flowmeter thereby

Publications (2)

Publication Number Publication Date
JPS57133320A true JPS57133320A (en) 1982-08-18
JPH0139052B2 JPH0139052B2 (en) 1989-08-17

Family

ID=11996609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1933881A Granted JPS57133320A (en) 1981-02-12 1981-02-12 Non-circular gear and flowmeter thereby

Country Status (1)

Country Link
JP (1) JPS57133320A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879118A (en) * 1981-11-05 1983-05-12 Oval Eng Co Ltd Volumetric flowmeter using stepped gear and leaf type stepped gear
JPS63105820U (en) * 1986-12-26 1988-07-08
EP0642001A3 (en) * 1990-08-20 1995-08-02 Oval Eng Co Ltd Positive displacement flowmeter.
JP2011524985A (en) * 2008-06-20 2011-09-08 グラコ ミネソタ インコーポレーテッド Involute gear teeth for fluid measuring devices

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3827655B2 (en) * 2003-06-24 2006-09-27 株式会社オーバル Volumetric flow meter using non-circular gear and non-circular gear

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879118A (en) * 1981-11-05 1983-05-12 Oval Eng Co Ltd Volumetric flowmeter using stepped gear and leaf type stepped gear
JPS63105820U (en) * 1986-12-26 1988-07-08
EP0642001A3 (en) * 1990-08-20 1995-08-02 Oval Eng Co Ltd Positive displacement flowmeter.
JP2011524985A (en) * 2008-06-20 2011-09-08 グラコ ミネソタ インコーポレーテッド Involute gear teeth for fluid measuring devices

Also Published As

Publication number Publication date
JPH0139052B2 (en) 1989-08-17

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