Assignee
FRICK CO
29 granted patents·1,018 citations·filing 1975–1991
Top patents by PatentIndex Score
29 records- 0194US4548549AMicro-processor control of compression ratio at full load in a helical screw rotary compressor responsive to compressor drive motor currentFRICK CO·Filed 1985·Granted Oct 22, 1985·75 cites·2 claims
- 0293US4227862ASolid state compressor control systemFRICK CO·Filed 1978·Granted Oct 14, 1980·145 cites·18 claims
- 0392US4609329AMicro-processor control of a movable slide stop and a movable slide valve in a helical screw rotary compressor with an enconomizer inlet portFRICK CO·Filed 1985·Granted Sep 2, 1986·108 cites·12 claims
- 0491US4336001ASolid state compressor control systemFRICK CO·Filed 1980·Granted Jun 22, 1982·107 cites·4 claims
- 0589US4516914AMicro-processor control of moveable slide stop and a moveable slide valve in a helical screw rotary compressorFRICK CO·Filed 1984·Granted May 14, 1985·51 cites·10 claims
- 0686US4519748AMicro-processor control of compression ratio at full load in a helical screw rotary compressor responsive to compressor drive motor currentFRICK CO·Filed 1984·Granted May 28, 1985·43 cites·8 claims
- 0785US4678406AVariable volume ratio screw compressor with step controlFRICK CO·Filed 1986·Granted Jul 7, 1987·39 cites·12 claims
- 0885US4434112AHeat transfer surface with increased liquid to air evaporative heat exchangeFRICK CO·Filed 1982·Granted Feb 28, 1984·76 cites·6 claims
- 0982US4690759ACentrifugal and impingement oil separatorFRICK CO·Filed 1986·Granted Sep 1, 1987·58 cites·9 claims
- 1082US4465446ARadial and thrust bearing mountings providing independent loadingFRICK CO·Filed 1983·Granted Aug 14, 1984·34 cites·4 claims
- 1179US4378680AShell and tube ice-maker with hot gas defrostFRICK CO·Filed 1981·Granted Apr 5, 1983·31 cites·7 claims
- 1279US3994638AOscillating rotary compressorFRICK CO·Filed 1975·Granted Nov 30, 1976·30 cites·4 claims
- 1377US3986801AScrew compressorFRICK CO·Filed 1975·Granted Oct 19, 1976·23 cites·6 claims
- 1475US4515540AVariable liquid refrigerant injection port locator for screw compressor equipped with automatic variable volume ratioFRICK CO·Filed 1983·Granted May 7, 1985·26 cites·5 claims
- 1572US5134856AOil pressure maintenance for screw compressorFRICK CO·Filed 1991·Granted Aug 4, 1992·26 cites·13 claims
- 1664US4324109AIce-making apparatus with hot gas defrostFRICK CO·Filed 1981·Granted Apr 13, 1982·19 cites·6 claims
- 1757US4457681AVolume ratio control means for axial flow helical screw type compressorFRICK CO·Filed 1981·Granted Jul 3, 1984·15 cites·4 claims
- 1853US4437813AGas receiving and transmitting systemFRICK CO·Filed 1982·Granted Mar 20, 1984·22 cites·17 claims
- 1950US4068981ABlade-type rotary compressor with full unloading and oil sealed interfacesFRICK CO·Filed 1976·Granted Jan 17, 1978·11 cites·2 claims
- 2043US4840033AIce builder and control system thereforFRICK CO·Filed 1988·Granted Jun 20, 1989·16 cites·15 claims
- 2141US4404810AMethod of making ice using hot gas defrostFRICK CO·Filed 1981·Granted Sep 20, 1983·7 cites·2 claims
- 2240US4553911AMethod of coding the oil in screw compressors equipped with automatic variable volume ratioFRICK CO·Filed 1985·Granted Nov 19, 1985·7 cites·2 claims
- 2339US4227380ASingle casing, multiple duty valveFRICK CO·Filed 1979·Granted Oct 14, 1980·12 cites·4 claims
- 2436US4027496ADual liquid delivery and separation apparatus and processFRICK CO·Filed 1976·Granted Jun 7, 1977·6 cites·9 claims
- 2533US4100757AClosed circuit ammonia system for liquid heating from waterFRICK CO·Filed 1977·Granted Jul 18, 1978·3 cites·4 claims
- 2632US4646526AMethod and apparatus for making fragmentary iceFRICK CO·Filed 1986·Granted Mar 3, 1987·3 cites·17 claims
- 2732US4325226ARefrigeration system condenser heat recovery at higher temperature than normal condensing temperatureFRICK CO·Filed 1981·Granted Apr 20, 1982·9 cites·4 claims
- 2830US4685310AMulti-purpose valve assemblyFRICK CO·Filed 1986·Granted Aug 11, 1987·9 cites·8 claims
- 2928US4402189ARefrigeration system condenser heat recovery at higher temperature than normal condensing temperatureFRICK CO·Filed 1981·Granted Sep 6, 1983·7 cites·2 claims
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