GB1379587A - Air motor speed control - Google Patents

Air motor speed control

Info

Publication number
GB1379587A
GB1379587A GB5759371A GB5759371A GB1379587A GB 1379587 A GB1379587 A GB 1379587A GB 5759371 A GB5759371 A GB 5759371A GB 5759371 A GB5759371 A GB 5759371A GB 1379587 A GB1379587 A GB 1379587A
Authority
GB
United Kingdom
Prior art keywords
valve
motor
restrictor
air motor
speed control
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
GB5759371A
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.)
Bowles Fluidics Corp
Original Assignee
Bowles Fluidics Corp
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 Bowles Fluidics Corp filed Critical Bowles Fluidics Corp
Publication of GB1379587A publication Critical patent/GB1379587A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/002—Circuit elements having no moving parts for controlling engines, turbines, compressors (starting, speed regulation, temperature control or the like)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
    • F01B17/02—Engines

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Flow Control (AREA)

Abstract

1379587 Air motor speed control BOWLES FLUIDICS CORP 10 Dec 1971 [17 Dec 1970] 57593/71 Heading G3P An air motor 10 supplied by valve 11 is maintained at constant speed regardless of load by adjusting valve 11 using a signal 15 from a bridge circuit 13 including a restrictor 23 in series with the motor and a parallel branch fitted with series restrictors 19, 21 of which the latter is permanently choked. The pressures at 20, 24 downstream of restrictors 19, 23 are compared in fluidic amplifier 25 from which signal 15 is obtained. The bridge circuit thus adjusts the valve 11 to maintain the pressures at 20, 24 equal, the pressure at 24 varying according to the load on the motor but, due to restrictor 21 being choked, the volume of air delivered to the motor remaining constant. In a modification, amplifier 25 is replaced by a bellows operated leak-off valve controlling the supply valve optionally through one or more fluidic amplifiers. Variation of the set speed is obtained by adjusting restrictor 23.
GB5759371A 1970-12-17 1971-12-10 Air motor speed control Expired GB1379587A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9910570A 1970-12-17 1970-12-17

Publications (1)

Publication Number Publication Date
GB1379587A true GB1379587A (en) 1975-01-02

Family

ID=22272754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5759371A Expired GB1379587A (en) 1970-12-17 1971-12-10 Air motor speed control

Country Status (7)

Country Link
AT (1) AT311734B (en)
BE (1) BE776826A (en)
CH (1) CH530551A (en)
DE (1) DE2162475A1 (en)
FR (1) FR2118093B1 (en)
GB (1) GB1379587A (en)
IT (1) IT945409B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501308A1 (en) * 1981-03-06 1982-09-10 Sundstrand Corp VISCOSITY COMPENSATION CONTROL CIRCUIT, EQUALIZED POWER SUPPLY HYDRAULIC CIRCUIT AND HYDRAULIC CONTROL CIRCUIT

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1317778B1 (en) * 2000-06-07 2003-07-15 Amos Bonazzoli HIGH PERFORMANCE PISTON PROPELLER

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651317A (en) * 1944-10-30 1953-09-08 Penn Ind Instr Corp Pressure modulating relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501308A1 (en) * 1981-03-06 1982-09-10 Sundstrand Corp VISCOSITY COMPENSATION CONTROL CIRCUIT, EQUALIZED POWER SUPPLY HYDRAULIC CIRCUIT AND HYDRAULIC CONTROL CIRCUIT

Also Published As

Publication number Publication date
DE2162475A1 (en) 1972-07-13
AT311734B (en) 1973-11-26
FR2118093B1 (en) 1976-04-16
BE776826A (en) 1972-04-17
FR2118093A1 (en) 1972-07-28
CH530551A (en) 1972-11-15
IT945409B (en) 1973-05-10

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed