GB550622A - Improvements in and relating to gear pumps - Google Patents

Improvements in and relating to gear pumps

Info

Publication number
GB550622A
GB550622A GB8868/41A GB886841A GB550622A GB 550622 A GB550622 A GB 550622A GB 8868/41 A GB8868/41 A GB 8868/41A GB 886841 A GB886841 A GB 886841A GB 550622 A GB550622 A GB 550622A
Authority
GB
United Kingdom
Prior art keywords
per cent
july
chromium
carbon
relating
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
GB8868/41A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB550622A publication Critical patent/GB550622A/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
    • 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
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C15/062—Arrangements for supercharging the working space
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/088—Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

550,622. Alloys; heat treatment. DU PONT DE NEMOURS & CO., E. I. July 14, 1941, No. 8868. Convention date, July 12, 1940. Drawings to Specification. [Classes 72 and 82 (i)] Also in Group XXVI] The invention deals with a metering pump of the gear wheel type for filament-forming compositions. A suitable steel for the pump parts contains 10 per cent. to 16 per cent. chromium, 1.0 per cent. to 1.6 per cent. carbon and other elements up to 40 per cent. A particular example contains 1.55 per cent. carbon, 12.00 per cent. chromium, 0.40 per cent. cobalt, 0.20 per cent. manganese, 0.35 per cent. silicon, 0.85 per cent. vanadium, 0.80 per cent molybdenum and 83.85 per cent. iron. This alloy is quenched in oil at between 1750‹F. and 1850‹F. and drawn in the temperature range 600‹F. to 1000‹F. Specification 535,186, [Group XXVI], and U.S.A. Specification 2,071.250 are referred to.
GB8868/41A 1940-07-12 1941-07-14 Improvements in and relating to gear pumps Expired GB550622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US550622XA 1940-07-12 1940-07-12

Publications (1)

Publication Number Publication Date
GB550622A true GB550622A (en) 1943-01-18

Family

ID=21995331

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8868/41A Expired GB550622A (en) 1940-07-12 1941-07-14 Improvements in and relating to gear pumps

Country Status (1)

Country Link
GB (1) GB550622A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2669913A1 (en) * 1990-11-30 1992-06-05 Aeroquip Ag DEVICE FOR DISPENSING A DOSED QUANTITY OF A LIQUID.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2669913A1 (en) * 1990-11-30 1992-06-05 Aeroquip Ag DEVICE FOR DISPENSING A DOSED QUANTITY OF A LIQUID.
NL9101998A (en) * 1990-11-30 1992-06-16 Aeroquip Ag SYSTEM FOR DOSED LIQUID DELIVERY.
GB2251236A (en) * 1990-11-30 1992-07-01 Aeroquip Ag "improvements in and relating to metered liquid dispensing systems"
GB2251236B (en) * 1990-11-30 1994-07-27 Aeroquip Ag Improvements in and relating to metered liquid dispensing systems

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