Inventor · disambiguated record
Bernard Zimmern
Also filed as: ZIMMERN BERNARD
36 granted patents·547 citations·filing 1974–2002
98Inventor score
Top patents by PatentIndex Score
36 records- 0188US4261691ARotary screw machine with two intermeshing gate rotors and two independently controlled gate regulating valvesHALL THERMOTANK PROD LTD·Filed 1979·Granted Apr 14, 1981·29 cites·3 claims
- 0287US4968231AOil-free rotary compressor with injected water and dissolved borateZIMMERN BERNARD·Filed 1989·Granted Nov 6, 1990·43 cites·10 claims
- 0386US4903497AMethods and devices for cooling a motor of a refrigerating machine with liquid and economizer gasZIMMERN BERNARD·Filed 1988·Granted Feb 27, 1990·69 cites·23 claims
- 0486US4074957AScrew compressorsMONOVIS BV·Filed 1976·Granted Feb 21, 1978·30 cites·1 claims
- 0581US4509341AEconomizer device for a refrigerating machine, a heat-pump or the likeZIMMERN BERNARD·Filed 1984·Granted Apr 9, 1985·43 cites·23 claims
- 0677US5195331AMethod of using a thermal expansion valve device, evaporator and flow control means assembly and refrigerating machineZIMMERN BERNARD·Filed 1991·Granted Mar 23, 1993·45 cites·5 claims
- 0775US4861246AInjected compressor with liquid switchZIMMERN BERNARD·Filed 1988·Granted Aug 29, 1989·24 cites·1 claims
- 0873US3945778ACompressors and expansion machines of the single worm typeZIMMERN BERNARD·Filed 1974·Granted Mar 23, 1976·21 cites·1 claims
- 0965US4364714AProcess to supercharge and control a single screw compressorUNISCREW LTD·Filed 1980·Granted Dec 21, 1982·18 cites·2 claims
- 1062US4534719AVolumetric screw-and-pinion machine and a method for using the sameZIMMERN BERNARD·Filed 1983·Granted Aug 13, 1985·17 cites·11 claims
- 1161US4470777AVolumetric machine with screw and pinion-wheelsZIMMERN BERNARD·Filed 1982·Granted Sep 11, 1984·16 cites·9 claims
- 1257US4342548AScrew having a V-shaped groove profile for cooperating with a pinion in a compression or expansion machineUNISCREW LTD·Filed 1979·Granted Aug 3, 1982·10 cites·2 claims
- 1357US4261169AMethod for converting thermal energy into mechanical energy and a machine for carrying out said methodUNISCREW LTD·Filed 1978·Granted Apr 14, 1981·13 cites·7 claims
- 1456US4579513APositive displacement screw machine with separation wall attached to slide valveZIMMERN BERNARD·Filed 1985·Granted Apr 1, 1986·14 cites·6 claims
- 1556US3932077ARotary interengaging worm and worm wheel with specific tooth shapeZIMMERN BERNARD·Filed 1974·Granted Jan 13, 1976·12 cites·7 claims
- 1654US4900239AMethod and a screw machine for processing fluid under high pressures, with liquid injection between a sealing portion and a support portion of the gate-rotorZIMMERN BERNARD·Filed 1988·Granted Feb 13, 1990·12 cites·8 claims
- 1753US4691533ARefrigeration system with a centrifugal economizerZIMMERN BERNARD·Filed 1986·Granted Sep 8, 1987·19 cites·1 claims
- 1852US4890989APositive displacement machine with a plastic gate pintonZIMMERN BERNARD·Filed 1988·Granted Jan 2, 1990·13 cites·10 claims
- 1952US4321022AInter-engaging threaded rotor and pinion machine with multi-edged pinion tooth flanksUNISCREW LTD·Filed 1979·Granted Mar 23, 1982·10 cites·4 claims
- 2050US6767524B2Process to produce nearly oil free compressed ammonia and system to implement itFiled 2002·Granted Jul 27, 2004·2 cites·13 claims
- 2145US5087182ACasing construction for screw compression/expansion machinesZIMMERN BERNARD·Filed 1990·Granted Feb 11, 1992·10 cites·2 claims
- 2244US4470781APositive displacement meshing screw machineZIMMERN BERNARD·Filed 1982·Granted Sep 11, 1984·8 cites·12 claims
- 2341US6106241ASingle screw compressor with liquid lock preventing slideFiled 1998·Granted Aug 22, 2000·6 cites·12 claims
- 2440US4492542AGlobal worm machine with seizure-preventing cellsZIMMERN BERNARD·Filed 1982·Granted Jan 8, 1985·6 cites·3 claims
- 2539US4589826AMethod of lubricating bearings of a machine handling liquefiable gasZIMMERN BERNARD·Filed 1985·Granted May 20, 1986·12 cites·17 claims
- 2639US4569640ADevice for high pressure compressionZIMMERN BERNARD·Filed 1983·Granted Feb 11, 1986·6 cites·8 claims
- 2739US4222691AMethod for machining the screw of a compression or expansion machine and a device for the application of said methodUNISCREW LTD·Filed 1978·Granted Sep 16, 1980·4 cites·9 claims
- 2838US5084965AProcess to cut hour glass screwsZIMMERN BERNARD·Filed 1991·Granted Feb 4, 1992·6 cites·4 claims
- 2938US4043704ADouble-acting rotary expansible chamber pump adaptable to series or parallel operationUNISCREW LTD·Filed 1975·Granted Aug 23, 1977·5 cites·8 claims
- 3037US4373866AProcess to control the delivery of a single screw compressorUNISCREW LTD·Filed 1980·Granted Feb 15, 1983·5 cites·3 claims
- 3136US5080568APositive displacement rotary machineZIMMERN BERNARD·Filed 1990·Granted Jan 14, 1992·5 cites·4 claims
- 3234US5890884AScrew-type compressor with liquid lock protectionFiled 1996·Granted Apr 6, 1999·3 cites·7 claims
- 3334US4553399AMethod of lubricating bearings of a refrigeration or the like compressorZIMMERN BERNARD·Filed 1984·Granted Nov 19, 1985·6 cites·11 claims
- 3434US4475877AGloboid worm machine with metal ring in bearing housingZIMMERN BERNARD·Filed 1983·Granted Oct 9, 1984·3 cites·8 claims
- 3530US4890461AHermetic or semi-hermetic refrigeration motor-compressor unitZIMMERN BERNARD·Filed 1988·Granted Jan 2, 1990·2 cites·8 claims
- 3630US4571166AControl slide for a screw volumetric machine and a machine equipped therewithZIMMERN BERNARD·Filed 1983·Granted Feb 18, 1986·0 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →