GB620901A - Improvements in or relating to cylindrical objects manufactured by an extrusion process - Google Patents

Improvements in or relating to cylindrical objects manufactured by an extrusion process

Info

Publication number
GB620901A
GB620901A GB2894/47A GB289447A GB620901A GB 620901 A GB620901 A GB 620901A GB 2894/47 A GB2894/47 A GB 2894/47A GB 289447 A GB289447 A GB 289447A GB 620901 A GB620901 A GB 620901A
Authority
GB
United Kingdom
Prior art keywords
parts
axis
extrusion
relating
extrusion process
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
GB2894/47A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB620901A publication Critical patent/GB620901A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/085—Making tubes
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/084—Toothed wheels
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/24—Manufacture essentially without removing material by extrusion

Abstract

620,901. Extruding. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Jan. 30, 1947, No. 2894. Convention date, Feb. 16, 1944. [Class 83 (iv)] In making by backward extrusion a cylindrical object having some parts at a greater distance from the axis than others, those parts nearer the axis are made thicker in order to counteract the tendency of such parts to rise to a higher level than other parts during the extrusion. The invention may be applied to the extrusion of an object such as a cylindrical pump blade having a cross-section as shown in the Figure. The parts 2 nearer the axis X are made thicker than the more distant parts and include ribs 3 by which the blade may be keyed to a shaft 5.
GB2894/47A 1944-02-16 1947-01-30 Improvements in or relating to cylindrical objects manufactured by an extrusion process Expired GB620901A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL620901X 1944-02-16

Publications (1)

Publication Number Publication Date
GB620901A true GB620901A (en) 1949-03-31

Family

ID=19788427

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2894/47A Expired GB620901A (en) 1944-02-16 1947-01-30 Improvements in or relating to cylindrical objects manufactured by an extrusion process

Country Status (1)

Country Link
GB (1) GB620901A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782805A (en) * 1952-11-24 1957-02-26 Gilbert E Leadbetter Conduit and method of making same
WO1997037106A1 (en) * 1996-04-02 1997-10-09 Festo Kg Rotary piston engine
WO2000029750A1 (en) * 1998-11-13 2000-05-25 Wilhelm Kächele GmbH Elastomertechnik Worm for an eccentric screw pump or a subsurface drilling motor
EP1361365A2 (en) * 1998-09-30 2003-11-12 Luk Automobiltechnik GmbH & Co. KG Vacuum pump and plastic rotor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782805A (en) * 1952-11-24 1957-02-26 Gilbert E Leadbetter Conduit and method of making same
WO1997037106A1 (en) * 1996-04-02 1997-10-09 Festo Kg Rotary piston engine
EP1361365A2 (en) * 1998-09-30 2003-11-12 Luk Automobiltechnik GmbH & Co. KG Vacuum pump and plastic rotor
EP1361365A3 (en) * 1998-09-30 2003-12-03 Luk Automobiltechnik GmbH & Co. KG Vacuum pump and plastic rotor
US6743004B2 (en) 1998-09-30 2004-06-01 Luk. Automobiltechnik Gmbh & Co. Kg. Vacuum pump
US6923628B1 (en) 1998-09-30 2005-08-02 Luk, Automobitechnik Gmbh Vacuum pump
WO2000029750A1 (en) * 1998-11-13 2000-05-25 Wilhelm Kächele GmbH Elastomertechnik Worm for an eccentric screw pump or a subsurface drilling motor
US6544015B1 (en) 1998-11-13 2003-04-08 Wilhelm Kaechele Gmbh Elastomertechnik Worm for an eccentric screw pump or a subsurface drilling motor

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