GB1292909A - Improvements in fluidic speed governor - Google Patents

Improvements in fluidic speed governor

Info

Publication number
GB1292909A
GB1292909A GB7730/70A GB773070A GB1292909A GB 1292909 A GB1292909 A GB 1292909A GB 7730/70 A GB7730/70 A GB 7730/70A GB 773070 A GB773070 A GB 773070A GB 1292909 A GB1292909 A GB 1292909A
Authority
GB
United Kingdom
Prior art keywords
motor
pressure
decoupler
fed
pulse
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
GB7730/70A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1292909A publication Critical patent/GB1292909A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
    • F16H39/01—Pneumatic gearing; Gearing working with subatmospheric pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Ink Jet (AREA)
  • Hydraulic Motors (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

1292909 Fluid-pressure servomotor systems; pulse shapers GENERAL ELECTRIC CO 18 Feb 1970 [20 March 1969] 7730/70 Headings G3H and G3P The speed of a positive displacement fluidpressure motor is controlled by a fluidic system which senses the pressure pulses generated in the exhaust, or other convenient part, of the motor, and feeds a pressure signal, proportional to pulse frequency, into a proportional amplifier 11a where it is compared with a signal produced in a potentiometer 18, 19 to correspond with a desired motor speed, the output of amplifier 11a being fed through amplifiers 11b, c, to a relay valve 12 controlling the supply of fluid to the motor. Valve 19 may be pedal controlled and the motor can drive a dental drill (not shown). Pulse shaper:- The pulses are fed at A to a decoupler 14 and then through an analogue chain 15a, b, c and digital amplifiers 16a, b to a frequency to pressure converter 17a. The waveforms at A, B, C 1 , C 2 , D 1 , D 2 , E, F 1 , F 2 and G are illustrated in Fig.2 (not shown). Figs.4, 5a and 5b (not shown) illustrate modified circuits for the decoupler and converter 17a.
GB7730/70A 1969-03-20 1970-02-18 Improvements in fluidic speed governor Expired GB1292909A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80886969A 1969-03-20 1969-03-20

Publications (1)

Publication Number Publication Date
GB1292909A true GB1292909A (en) 1972-10-18

Family

ID=25199978

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7730/70A Expired GB1292909A (en) 1969-03-20 1970-02-18 Improvements in fluidic speed governor

Country Status (5)

Country Link
US (1) US3580086A (en)
JP (1) JPS513870B1 (en)
DE (1) DE2012759A1 (en)
FR (1) FR2035124A1 (en)
GB (1) GB1292909A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930743A (en) * 1973-12-26 1976-01-06 General Electric Company Fluidic governor system
US4007592A (en) * 1975-11-13 1977-02-15 Sperry Rand Corporation Power transmission
GB2174499A (en) * 1985-04-30 1986-11-05 Emi Plc Thorn Speed determination from exhaust note
AT405885B (en) * 1998-05-08 1999-12-27 Ott Josef Ing DEVICE FOR DETECTING THE SPEED OF DENTAL TURBINES

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879467A (en) * 1959-03-24 Stern
US3059480A (en) * 1960-06-16 1962-10-23 Henry W Carpenter Tachometer
US3195525A (en) * 1964-03-09 1965-07-20 Mcculloch Corp Idle governor
US3400729A (en) * 1965-04-01 1968-09-10 Gen Electric Rate of change of pressure sensor
US3409032A (en) * 1965-05-19 1968-11-05 Gen Electric Fluid-operated frequency sensing converter circuit

Also Published As

Publication number Publication date
US3580086A (en) 1971-05-25
JPS513870B1 (en) 1976-02-06
DE2012759A1 (en) 1970-10-01
FR2035124A1 (en) 1970-12-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee