FR2756327B3 - HYDRAULIC PUMP WITH REDUCED PRESSURE POINTS - Google Patents

HYDRAULIC PUMP WITH REDUCED PRESSURE POINTS

Info

Publication number
FR2756327B3
FR2756327B3 FR9710586A FR9710586A FR2756327B3 FR 2756327 B3 FR2756327 B3 FR 2756327B3 FR 9710586 A FR9710586 A FR 9710586A FR 9710586 A FR9710586 A FR 9710586A FR 2756327 B3 FR2756327 B3 FR 2756327B3
Authority
FR
France
Prior art keywords
reduced pressure
hydraulic pump
pressure points
points
hydraulic
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 - Lifetime
Application number
FR9710586A
Other languages
French (fr)
Other versions
FR2756327A1 (en
Inventor
Stefano Negrini
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.)
Casappa SpA
Original Assignee
Casappa SpA
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 Casappa SpA filed Critical Casappa SpA
Publication of FR2756327A1 publication Critical patent/FR2756327A1/en
Application granted granted Critical
Publication of FR2756327B3 publication Critical patent/FR2756327B3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F04C15/0049—Equalization of pressure pulses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/13—Noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/14—Pulsations

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Systems And Boosters (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Control Of Transmission Device (AREA)
FR9710586A 1996-11-22 1997-08-22 HYDRAULIC PUMP WITH REDUCED PRESSURE POINTS Expired - Lifetime FR2756327B3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT96PR000021 IT241428Y1 (en) 1996-11-22 1996-11-22 REDUCED PRESSURE PULSE HYDRAULIC PUMP.

Publications (2)

Publication Number Publication Date
FR2756327A1 FR2756327A1 (en) 1998-05-29
FR2756327B3 true FR2756327B3 (en) 1999-01-15

Family

ID=11396010

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9710586A Expired - Lifetime FR2756327B3 (en) 1996-11-22 1997-08-22 HYDRAULIC PUMP WITH REDUCED PRESSURE POINTS

Country Status (4)

Country Link
DE (1) DE29714138U1 (en)
FR (1) FR2756327B3 (en)
GB (1) GB2319564B (en)
IT (1) IT241428Y1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20040639A1 (en) 2004-10-15 2005-01-15 Cnh Italia Spa PUMPING DEVICE FOR LIQUIDS, IN PARTICULAR FOR OIL
DE202005013303U1 (en) * 2005-08-23 2005-11-24 Trw Automotive Gmbh Pump, especially motor and pump unit for motor vehicle's servo steering system, has fluid outlet of pressure limiting valve connected to suction connection of pump
JP4347859B2 (en) 2006-03-24 2009-10-21 本田技研工業株式会社 Oil pump
DE102014109066A1 (en) 2014-06-27 2015-12-31 Claas Industrietechnik Gmbh transmission assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520687U (en) * 1978-07-28 1980-02-08
GB2036873B (en) * 1978-12-01 1983-02-09 South Western Ind Res Silencing fluid pumps and motors
DE2901240C2 (en) * 1979-01-13 1981-10-01 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Radial piston pump
WO1981003201A1 (en) * 1980-04-28 1981-11-12 G Koopmann Noise reduction system
JPH0441260Y2 (en) * 1984-10-15 1992-09-28

Also Published As

Publication number Publication date
DE29714138U1 (en) 1997-10-16
GB9718482D0 (en) 1997-11-05
GB2319564A (en) 1998-05-27
ITPR960021V0 (en) 1996-11-22
ITPR960021U1 (en) 1998-05-22
IT241428Y1 (en) 2001-05-09
FR2756327A1 (en) 1998-05-29
GB2319564B (en) 2000-08-23

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