Assignee
PIERBURG GMBH & CO KG
DE·42 granted patents·421 citations·filing 1976–1986
Top patents by PatentIndex Score
42 records- 0195US4437386APneumatically operated servo-motor and control method thereforPIERBURG GMBH & CO KG·Filed 1982·Granted Mar 20, 1984·49 cites·11 claims
- 0289US4458228ARotary positioning apparatus and associated methods, such as for a carburetor choke valvePIERBURG GMBH & CO KG·Filed 1981·Granted Jul 3, 1984·35 cites·28 claims
- 0388US4627825AApparatus for the angular adjustment of a shaft, such as a camshaft, with respect to a drive wheelPIERBURG GMBH & CO KG·Filed 1985·Granted Dec 9, 1986·42 cites·25 claims
- 0480US4455987AMethod of and an arrangement for controlling return quantities of exhaustPIERBURG GMBH & CO KG·Filed 1982·Granted Jun 26, 1984·24 cites·21 claims
- 0576US4221204AThermal timer valvePIERBURG GMBH & CO KG·Filed 1979·Granted Sep 9, 1980·32 cites·1 claims
- 0674US4508089AMethod of regulating the charge of combustion gas delivered to an internal combustion enginePIERBURG GMBH & CO KG·Filed 1982·Granted Apr 2, 1985·19 cites·3 claims
- 0761US4511082AFuel-injection systems and associated methodsPIERBURG GMBH & CO KG·Filed 1983·Granted Apr 16, 1985·15 cites·9 claims
- 0858US4543939AFuel supply assembly for mixture-compressing internal combustion engines and associated methods of operationPIERBURG GMBH & CO KG·Filed 1984·Granted Oct 1, 1985·12 cites·16 claims
- 0954US4531899APositive displacement rotary gas compressor pumpPIERBURG GMBH & CO KG·Filed 1983·Granted Jul 30, 1985·14 cites·2 claims
- 1054US4216175ACarburetor for combustion enginesPIERBURG GMBH & CO KG·Filed 1979·Granted Aug 5, 1980·9 cites·3 claims
- 1153US4615482AMulti-way fluid flow control valvePIERBURG GMBH & CO KG·Filed 1985·Granted Oct 7, 1986·13 cites·13 claims
- 1250US4463554AMethod of generating gas pressure in an internal combustion engine, and apparatus for carrying out this methodPIERBURG GMBH & CO KG·Filed 1981·Granted Aug 7, 1984·11 cites·33 claims
- 1350US4318070ASpring biased actuator for a thermal delay valve or switchPIERBURG GMBH & CO KG·Filed 1980·Granted Mar 2, 1982·8 cites·11 claims
- 1448US4246880AArrangement for heating the intake pipe of a spark-ignited internal combustion enginePIERBURG GMBH & CO KG·Filed 1979·Granted Jan 27, 1981·12 cites·1 claims
- 1547US4486688AMethod and arrangement for regulting a path length in dependence upon a variable control valuePIERBURG GMBH & CO KG·Filed 1982·Granted Dec 4, 1984·13 cites·12 claims
- 1647US4251471ACarburetor for internal combustion engines with an acceleration pumpPIERBURG GMBH & CO KG·Filed 1979·Granted Feb 17, 1981·8 cites·3 claims
- 1746US4445475AEngine idling speed control systemsPIERBURG GMBH & CO KG·Filed 1981·Granted May 1, 1984·6 cites·17 claims
- 1845US4722482AElectro-magnetic injection valve having enhanced valve-opening forcesPIERBURG GMBH & CO KG·Filed 1986·Granted Feb 2, 1988·9 cites·10 claims
- 1944US4526521ARotary spiral wall pump with pivotably connected guide means and associated methodPIERBURG GMBH & CO KG·Filed 1983·Granted Jul 2, 1985·10 cites·9 claims
- 2043US4417857APiston pumpPIERBURG GMBH & CO KG·Filed 1982·Granted Nov 29, 1983·8 cites·7 claims
- 2143US4199535ADiaphragm pumpPIERBURG GMBH & CO KG·Filed 1979·Granted Apr 22, 1980·5 cites·1 claims
- 2241US4409944AFuel supply systemPIERBURG GMBH & CO KG·Filed 1981·Granted Oct 18, 1983·5 cites·1 claims
- 2338US4729397AElectromagnetic control valve for a pressure fluid and associated methodPIERBURG GMBH & CO KG·Filed 1986·Granted Mar 8, 1988·7 cites·3 claims
- 2438US4672928AIgnition device for internal combustion enginesPIERBURG GMBH & CO KG·Filed 1984·Granted Jun 16, 1987·4 cites·9 claims
- 2538US4514153ARotary vane pump with clutchPIERBURG GMBH & CO KG·Filed 1982·Granted Apr 30, 1985·6 cites·13 claims
- 2637US4105001AControl mechanism for operation of an internal combustion enginePIERBURG GMBH & CO KG·Filed 1976·Granted Aug 8, 1978·3 cites·6 claims
- 2735US4266520AFuel-air mixture arrangement with an air-compressing super-charger for a combustion enginePIERBURG GMBH & CO KG·Filed 1979·Granted May 12, 1981·2 cites·2 claims
- 2834US4282746ARate-of-use fuel consumption indicator for combustion enginesPIERBURG GMBH & CO KG·Filed 1979·Granted Aug 11, 1981·3 cites·9 claims
- 2934US4152375AFuel supply apparatus for externally ignited combustion engines with continuous fuel addition to the suction pipePIERBURG GMBH & CO KG·Filed 1978·Granted May 1, 1979·4 cites·8 claims
- 3033US4483428AClutch for work arrangements, particularly on internal combustion machines, and method for its operationPIERBURG GMBH & CO KG·Filed 1981·Granted Nov 20, 1984·3 cites·15 claims
- 3133US4433662AFuel supply systemPIERBURG GMBH & CO KG·Filed 1982·Granted Feb 28, 1984·4 cites·11 claims
- 3231US4236376AArrangement for regulating supercharger air pressurePIERBURG GMBH & CO KG·Filed 1979·Granted Dec 2, 1980·3 cites·2 claims
- 3330US4362673AMounting a piston in an accelerator pump of a carburetor and associated methodPIERBURG GMBH & CO KG·Filed 1981·Granted Dec 7, 1982·2 cites·13 claims
- 3430US4251472ACarburetor for combustion enginesPIERBURG GMBH & CO KG·Filed 1979·Granted Feb 17, 1981·1 cites·3 claims
- 3529US4657737AApparatus for determining the fuel-air ratio of Otto enginesPIERBURG GMBH & CO KG·Filed 1985·Granted Apr 14, 1987·10 cites·16 claims
- 3627US4604040ADisplacement machine having a housing and piston with spiral wallsPIERBURG GMBH & CO KG·Filed 1985·Granted Aug 5, 1986·0 cites·3 claims
- 3727US4283354ACarburetor for internal-combustion enginesPIERBURG GMBH & CO KG·Filed 1979·Granted Aug 11, 1981·3 cites·5 claims
- 3827US4281586APneumatically operated adjusting devicePIERBURG GMBH & CO KG·Filed 1979·Granted Aug 4, 1981·2 cites·7 claims
- 3925US4457278AFuel supply systemPIERBURG GMBH & CO KG·Filed 1983·Granted Jul 3, 1984·2 cites·6 claims
- 4023US4403925ADiaphragm fuel pump and associated methodPIERBURG GMBH & CO KG·Filed 1981·Granted Sep 13, 1983·2 cites·12 claims
- 4123US4259265ACarburetor for internal combustion enginesPIERBURG GMBH & CO KG·Filed 1979·Granted Mar 31, 1981·1 cites·1 claims
- 4220US4154202AFuel quantity distributorPIERBURG GMBH & CO KG·Filed 1977·Granted May 15, 1979·0 cites·1 claims
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