GB582259A - Improvements in hydraulic pumps - Google Patents

Improvements in hydraulic pumps

Info

Publication number
GB582259A
GB582259A GB12912/44A GB1291244A GB582259A GB 582259 A GB582259 A GB 582259A GB 12912/44 A GB12912/44 A GB 12912/44A GB 1291244 A GB1291244 A GB 1291244A GB 582259 A GB582259 A GB 582259A
Authority
GB
United Kingdom
Prior art keywords
sleeve
rotatable
shaft
wedges
group xxviii
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
GB12912/44A
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.)
MIDWEST HYDRAULICS Inc
Original Assignee
MIDWEST HYDRAULICS Inc
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 MIDWEST HYDRAULICS Inc filed Critical MIDWEST HYDRAULICS Inc
Priority to GB12912/44A priority Critical patent/GB582259A/en
Publication of GB582259A publication Critical patent/GB582259A/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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
    • F04B1/043—Hydraulic arrangements
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F04B49/123—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
    • F04B49/125—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts
    • 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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0435—Arrangements for disconnecting the pistons from the actuated cam
    • 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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F04B1/07—Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft
    • 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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F04B1/08—Control regulated by delivery pressure

Landscapes

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

Abstract

582,259. Eccentrics. FITZPATBICK, H.D. (Midwest Hydraulics, Inc.). July 6, 1944, No. 12912. [Class 122 (i)] [Also in Group XXVIII] An adjustable eccentric 41 secured to a rotatable shaft 35 of an hydraulic pump (see Group XXVIII) to reciprocate the pistons thereof is transversely displaced by means of oppositely tapered wedges 43, 44, themselves axially displaced by a sleeve 50 rotatable with the shaft 35 and which wedges have shoulders 52 projecting into a recess 51 of the sleeve 50. The sleeve 50 is disposed within another sleeve 53 itself manually rotatable in threaded engagement with a fixed tubular member 55.
GB12912/44A 1944-07-06 1944-07-06 Improvements in hydraulic pumps Expired GB582259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB12912/44A GB582259A (en) 1944-07-06 1944-07-06 Improvements in hydraulic pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12912/44A GB582259A (en) 1944-07-06 1944-07-06 Improvements in hydraulic pumps

Publications (1)

Publication Number Publication Date
GB582259A true GB582259A (en) 1946-11-11

Family

ID=10013409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12912/44A Expired GB582259A (en) 1944-07-06 1944-07-06 Improvements in hydraulic pumps

Country Status (1)

Country Link
GB (1) GB582259A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172421A2 (en) * 1984-07-31 1986-02-26 Fuji Techno Kogyo Kabushiki Kaisha Reciprocating pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172421A2 (en) * 1984-07-31 1986-02-26 Fuji Techno Kogyo Kabushiki Kaisha Reciprocating pump
EP0172421A3 (en) * 1984-07-31 1986-07-16 Fuji Techno Kogyo Kabushiki Kaisha Reciprocating pump

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