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1. (WO2013156789) SCREW MACHINE WITH VARIABLE DIAMETER ROTORS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2013/156789 International Application No.: PCT/GB2013/050996
Publication Date: 24.10.2013 International Filing Date: 19.04.2013
IPC:
F01C 1/08 (2006.01) ,F01C 1/16 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
C
ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
1
Rotary-piston machines or engines
08
of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
C
ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
1
Rotary-piston machines or engines
08
of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12
of other than internal-axis type
14
with toothed rotary pistons
16
with helical teeth, e.g. chevron-shaped, screw type
Applicants:
THE CITY UNIVERSITY [GB/GB]; Northampton Square London EC1V 0HB, GB
Inventors:
KOVACEVIC, Ahmed; GB
Agent:
KENT, Peter; Fleet Place House 2 Fleet Place London EC4M 7ET, GB
Priority Data:
1206905.019.04.2012GB
Title (EN) SCREW MACHINE WITH VARIABLE DIAMETER ROTORS
(FR) MACHINE À VIS COMPRENANT DES ROTORS À DIAMÈTRE VARIABLE
Abstract:
(EN) A positive displacement screw machine is described, which has a casing with a low-pressure port and a high-pressure port that are axially spaced apart. The casing defines a first bore and a second bore that extend along respective first and second axes from the low pressure port to the high pressure port. First and second meshing helical lobed rotors are arranged to contra-rotate within the respective first and second bores. The first rotor has an outside diameter that tapers in a direction substantially parallel to the first axis moving from the low pressure port to the high pressure port, and the second rotor has a root diameter that tapers in a direction substantially parallel to the second axis moving from the high pressure port to the low pressure port.
(FR) La présente invention concerne une machine à vis à déplacement positif qui comprend un corps comportant un orifice à faible pression et un orifice à forte pression qui sont axialement espacés. Le corps définit un premier trou et un second trou qui s'étendent le long de premier et second axes respectifs allant de l'orifice à faible pression à l'orifice à forte pression. Des premier et second rotors engrenants à lobes hélicoïdaux sont agencés pour effectuer une contrarotation à l'intérieur des premier et second trous respectifs. Le premier rotor présente un diamètre externe qui va en s'effilant dans une direction sensiblement parallèle au premier axe allant de l'orifice à faible pression à l'orifice à forte pression, et le second rotor comporte un diamètre de pied qui va en s'effilant dans une direction sensiblement parallèle au second axe allant de l'orifice à forte pression à l'orifice à faible pression.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)