GB993882A - Swashplate pump - Google Patents

Swashplate pump

Info

Publication number
GB993882A
GB993882A GB5239/62A GB523962A GB993882A GB 993882 A GB993882 A GB 993882A GB 5239/62 A GB5239/62 A GB 5239/62A GB 523962 A GB523962 A GB 523962A GB 993882 A GB993882 A GB 993882A
Authority
GB
United Kingdom
Prior art keywords
swash plate
stroke
axis
pump
pressure
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
GB5239/62A
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.)
SUNDSTRAND INT CORP SA
Original Assignee
SUNDSTRAND INT CORP SA
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 SUNDSTRAND INT CORP SA filed Critical SUNDSTRAND INT CORP SA
Publication of GB993882A publication Critical patent/GB993882A/en
Expired 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18024—Rotary to reciprocating and rotary
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18296—Cam and slide
    • Y10T74/18336—Wabbler type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

993,882. Reciprocating pumps. SUNDSTRAND INTERNATIONAL CORPORATION S.A. Feb. 12, 1962 [May 31, 1961], No. 5239/62. Heading F1A. A swash plate pump has a swash plate assembly 23 pivotable, by a hand-operated control rod 35 and link 34, about the neutral position to provide for reversal of flow. A spring mechanism 58 acting on the rod 35 biases the swash plate 28 towards its neutral position so as to counter the inertia effect of the reciprocating pistons 22. The swash plate 28 pivots about an axis 30 and the centres 25a of the piston ball ends 25 lie on a plane 31. The axis 30 is offset from this plane so as to produce a larger moment arm 55a than the moment arm 55b, thereby balancing the smaller mean pressure loading on the upper half of the swash plate. Owing to the compressibility effects of the liquid being pumped, the distribution of the piston loads, due to the liquid pressure, on the swash plate is as shown by graph G in Fig. 5. Alternatively the valve timing may be arranged so that on the inlet stroke the piston communicates with the delivery valve before reaching the end of its stroke, and vice versa on the delivery stroke. This produces a pressure gradient instead of the sharp cut off at the end of the delivery stroke shown in Fig. 5, to give a more equal pressure distribution above and below the axis 30. This method is used when the pump is connected to a motor which may tend to drive the pump during braking, in order to balance the pressure distribution (see Figs. 6-9, not shown).
GB5239/62A 1961-05-31 1962-02-12 Swashplate pump Expired GB993882A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US113697A US3230893A (en) 1961-05-31 1961-05-31 Swashplate pump

Publications (1)

Publication Number Publication Date
GB993882A true GB993882A (en) 1965-06-02

Family

ID=22350968

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5239/62A Expired GB993882A (en) 1961-05-31 1962-02-12 Swashplate pump

Country Status (3)

Country Link
US (1) US3230893A (en)
DE (1) DE1528808A1 (en)
GB (1) GB993882A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307009A (en) * 1995-11-13 1997-05-14 Nisshin Spinning A hydraulic drive unit and piston pump for use therein

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643549A (en) * 1969-08-01 1972-02-22 Mitsubishi Heavy Ind Ltd Axial piston pump or motor
FR2211862A5 (en) * 1972-12-27 1974-07-19 Cloup Jean
US5251536A (en) * 1992-01-15 1993-10-12 Caterpillar Inc. Axial piston pump with off-center pivot
DE19633118C2 (en) * 1996-08-16 2000-08-31 Amazonen Werke Dreyer H Continuously variable transmission, especially for agricultural distribution machines
US5782160A (en) * 1997-05-28 1998-07-21 Vickers, Incorporated Adjustable stop for variable displacement pumps
DE19750614C2 (en) * 1997-11-14 1999-12-16 Brueninghaus Hydromatik Gmbh Device for changing the displacement volume of a hydrostatic machine
US6196109B1 (en) 1998-11-16 2001-03-06 Eaton Corporation Axial piston pump and improved valve plate design therefor
US6883416B2 (en) * 2003-01-28 2005-04-26 Haldex Brake Corporation Swash plate containment assembly
US20050061143A1 (en) * 2003-01-28 2005-03-24 Koelzer Robert L. Modular swash plate compressor

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588866A (en) * 1944-09-14 1952-03-11 Jeffrey Mfg Co Hydraulic transmission of the swash plate type pump and motor, and control mechanism therefor
US2546583A (en) * 1945-02-10 1951-03-27 Denison Eng Co Hydraulic apparatus
US2642809A (en) * 1946-02-15 1953-06-23 Denison Eng Co Hydraulic apparatus
US2619141A (en) * 1950-03-30 1952-11-25 Oliver C Hines Portable device for cutting ends of ears of corn
US2853025A (en) * 1953-04-27 1958-09-23 Vickers Inc Power transmission
US2708879A (en) * 1954-03-19 1955-05-24 Vickers Inc Power transmission
US2945449A (en) * 1954-06-03 1960-07-19 Bendix Aviat Corp Hydraulic control pump
US2889781A (en) * 1954-11-30 1959-06-09 Sabre Res Corp Fuel pump
FR1184733A (en) * 1956-10-01 1959-07-24 Device for reducing the noise of multi-cylinder piston machines
US2915985A (en) * 1957-06-20 1959-12-08 New York Air Brake Co Pump
US3108542A (en) * 1959-01-14 1963-10-29 Sperry Rand Corp Power transmission
US2986872A (en) * 1959-09-17 1961-06-06 New York Air Brake Co Overcenter hydraulic pump-motor engine starter
NL278180A (en) * 1962-05-08

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307009A (en) * 1995-11-13 1997-05-14 Nisshin Spinning A hydraulic drive unit and piston pump for use therein
US5868555A (en) * 1995-11-13 1999-02-09 Nisshinbo Industries, Inc. Hydraulic drive unit of a press machine and a swash plate type variable capacity axial piston pump to use for said device
US5975858A (en) * 1995-11-13 1999-11-02 Nisshinbo Industries, Inc. Hydraulic drive unit of a press machine and swash plate type variable capacity axial piston pump to use for said device
GB2307009B (en) * 1995-11-13 2000-04-12 Nisshin Spinning A hydraulic drive unit and piston pump for use therein

Also Published As

Publication number Publication date
DE1528808A1 (en) 1970-02-12
US3230893A (en) 1966-01-25

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