GB1307851A - Porting arrangements of axial piston pumps and motors - Google Patents

Porting arrangements of axial piston pumps and motors

Info

Publication number
GB1307851A
GB1307851A GB1307851DA GB1307851A GB 1307851 A GB1307851 A GB 1307851A GB 1307851D A GB1307851D A GB 1307851DA GB 1307851 A GB1307851 A GB 1307851A
Authority
GB
United Kingdom
Prior art keywords
hydrofoil
port
flow
motors
april
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
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.)
Clerk R C
Original Assignee
Clerk R C
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 Clerk R C filed Critical Clerk R C
Publication of GB1307851A publication Critical patent/GB1307851A/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
    • F04B1/20—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 having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2042—Valves

Landscapes

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

Abstract

1307851 Reciprocating pumps or motors R C CLERK 9 June 1970 [11 April 1969 25 April 1969] 18643/69 and 21241/69 Heading F1A. In an axial-piston pump or motor having a rotary cylinder block 4 engaging a stationary ported valve face 2, the valve ports taper in depth from the inlet and outlet passages 1 and 5 and incorporate radial hydrofoils 6. For the inlet port shown, the arrangement increases the liquid flow-rate in the port to match the speed of the cylinder ports 3. At high speeds of the cylinder ports, a return flow is drawn over the back of the hydrofoil and augments the flow into the port, and at low speeds some of the liquid from passage 1 is diverted over the back of the hydrofoil and also passes through slots 7 and 8 in the hydrofoil, and acts to slow down the flow in the port. The hydrofoil may be cast integrally with the casing or may comprise an insert of a different material. The passages and hydrofoil may be coated with lowfriction plastics.
GB1307851D 1969-04-11 1969-04-11 Porting arrangements of axial piston pumps and motors Expired GB1307851A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1864369 1969-04-11

Publications (1)

Publication Number Publication Date
GB1307851A true GB1307851A (en) 1973-02-21

Family

ID=10115984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1307851D Expired GB1307851A (en) 1969-04-11 1969-04-11 Porting arrangements of axial piston pumps and motors

Country Status (1)

Country Link
GB (1) GB1307851A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450364A1 (en) * 1979-03-02 1980-09-26 Linde Ag PISTON MACHINE HAVING A ROTATING CYLINDER DRUM
FR2793848A1 (en) * 1999-01-13 2000-11-24 Toyota Motor Co Ltd FLUID PUMP

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450364A1 (en) * 1979-03-02 1980-09-26 Linde Ag PISTON MACHINE HAVING A ROTATING CYLINDER DRUM
FR2793848A1 (en) * 1999-01-13 2000-11-24 Toyota Motor Co Ltd FLUID PUMP

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees
427A Application made for restoration (sect. 27/1949)
728R Application refused (sect. 28/1977)