EP0253602A3 - Pumps - Google Patents

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Info

Publication number
EP0253602A3
EP0253602A3 EP87306166A EP87306166A EP0253602A3 EP 0253602 A3 EP0253602 A3 EP 0253602A3 EP 87306166 A EP87306166 A EP 87306166A EP 87306166 A EP87306166 A EP 87306166A EP 0253602 A3 EP0253602 A3 EP 0253602A3
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston
materials
viscosity
inlet
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.)
Withdrawn
Application number
EP87306166A
Other languages
German (de)
French (fr)
Other versions
EP0253602A2 (en
Inventor
Anthony Stephen Markham
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.)
MARKHAM (SHEFFIELD) Ltd
Original Assignee
MARKHAM (SHEFFIELD) Ltd
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 MARKHAM (SHEFFIELD) Ltd filed Critical MARKHAM (SHEFFIELD) Ltd
Publication of EP0253602A2 publication Critical patent/EP0253602A2/en
Publication of EP0253602A3 publication Critical patent/EP0253602A3/en
Withdrawn legal-status Critical Current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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports

Landscapes

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

Abstract

This invention relates to pumps.
It is well established that the ease or difficulty of pumping materials or admixes of materials is directly related to the viscosity and/or the flow characteristics of the material or mixture, it being generally accepted that the higher the viscosity and/or the lower the flow characteristics the more difficult does it become to pump the material. The object of the invention is to provide an effective pump (1) for such materials which objective is met by a construction comprising a cylinder (2), a piston (3) within the cylinder (2), an inlet (5) to the cylinder part-way along its length, said inlet (5) being opened and closed by reciprocation of the piston (3) within the cylinder (2), an outlet (6) from the cylinder (2) and valve means (7) at the outlet (6) from the cylinder (2) that is open during a drive stroke and closed during a return stroke of the piston (3).
EP87306166A 1986-07-15 1987-07-13 Pumps Withdrawn EP0253602A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8617238 1986-07-15
GB868617238A GB8617238D0 (en) 1986-07-15 1986-07-15 Pumps

Publications (2)

Publication Number Publication Date
EP0253602A2 EP0253602A2 (en) 1988-01-20
EP0253602A3 true EP0253602A3 (en) 1989-03-15

Family

ID=10601090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87306166A Withdrawn EP0253602A3 (en) 1986-07-15 1987-07-13 Pumps

Country Status (2)

Country Link
EP (1) EP0253602A3 (en)
GB (1) GB8617238D0 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1528254A (en) * 1966-06-22 1968-06-07 Bucher Guyer Ag Masch Axial piston pump
FR2061900A5 (en) * 1969-10-01 1971-06-25 Citroen Sa
FR2379712A1 (en) * 1977-02-03 1978-09-01 Jules Michel PERIODIC INJECTION DEVICE OF A LIQUID OR PASTE PRODUCT, IN PARTICULAR OF A GREASING PRODUCT

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1528254A (en) * 1966-06-22 1968-06-07 Bucher Guyer Ag Masch Axial piston pump
FR2061900A5 (en) * 1969-10-01 1971-06-25 Citroen Sa
FR2379712A1 (en) * 1977-02-03 1978-09-01 Jules Michel PERIODIC INJECTION DEVICE OF A LIQUID OR PASTE PRODUCT, IN PARTICULAR OF A GREASING PRODUCT

Also Published As

Publication number Publication date
EP0253602A2 (en) 1988-01-20
GB8617238D0 (en) 1986-08-20

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Inventor name: MARKHAM, ANTHONY STEPHEN