Inventor · disambiguated record
Karl Hehl
Also filed as: HEHL KARL · HEHL KARL-HEINZ
173 granted patents·4 pending applications·2,641 citations·filing 1974–2010
99Inventor score
Top patents by PatentIndex Score
177 records- 0190US5539650AKnowledge based method of controlling an injection molding machineFiled 1993·Granted Jul 23, 1996·84 cites·19 claims
- 0289US4565116AHydraulic speed controls for die closing unit of injection molding machineHEHL KARL·Filed 1983·Granted Jan 21, 1986·59 cites·12 claims
- 0388US4473346AMechanism for the attachment of interchangeable molds in an injection molding machineHEHL KARL·Filed 1982·Granted Sep 25, 1984·54 cites·17 claims
- 0487US4380427ACompact hydraulic drive for die closing unit of injection molding machineHEHL KARL·Filed 1981·Granted Apr 19, 1983·53 cites·12 claims
- 0586US6026696ADevice for converting a rotary motion into an axial motionFiled 1996·Granted Feb 22, 2000·40 cites·9 claims
- 0685US6769892B1Injection molding machine for processing plasticsFiled 2000·Granted Aug 3, 2004·23 cites·14 claims
- 0785US5052910AClamping unit for injection molding machineHEHL KARL·Filed 1989·Granted Oct 1, 1991·49 cites·18 claims
- 0884US5578329AInjection molding machine for processing synthetic materialsFiled 1994·Granted Nov 26, 1996·26 cites·9 claims
- 0984US4995801AInjection molding machine provided with a conveyor for delivering molding from the machineHEHL KARL·Filed 1989·Granted Feb 26, 1991·46 cites·17 claims
- 1083US8292610B2Device for manufacturing a three-dimensional objectHEHL KARL·Filed 2010·Granted Oct 23, 2012·10 cites·13 claims
- 1183US5634334AHydraulic device for use in a production machineFiled 1995·Granted Jun 3, 1997·32 cites·10 claims
- 1282US5129806AHydraulic system in an injection molding machineHEHL KARL·Filed 1991·Granted Jul 14, 1992·48 cites·6 claims
- 1382US4558916AMulti-pin plug connection system for electronic control unitHEHL KARL·Filed 1983·Granted Dec 17, 1985·40 cites·23 claims
- 1482US4544340AAttachment mechanism for interchangeable injection molding diesHEHL KARL·Filed 1984·Granted Oct 1, 1985·42 cites·20 claims
- 1581US4846664AHydraulic system for the mold clamping unit of a plastics injection molding machineHEHL KARL·Filed 1987·Granted Jul 11, 1989·44 cites·11 claims
- 1680US4386626AProportional valve for hydraulic systemsHEHL KARL·Filed 1980·Granted Jun 7, 1983·35 cites·11 claims
- 1779US5486106AHydraulic device for supplying a hydraulic driving unitFiled 1994·Granted Jan 23, 1996·38 cites·5 claims
- 1878US3974857ADevice for monitoring and adjusting the temperature of multiple cooling circuitsHEHL KARL·Filed 1974·Granted Aug 17, 1976·31 cites·12 claims
- 1978US3973888ADie closing unit for injection molding machine with molding die having multiple transfer sectionsHEHL KARL·Filed 1975·Granted Aug 10, 1976·33 cites·16 claims
- 2078US3936262AMulti-orifice injector nozzle for injection molding machineHEHL KARL·Filed 1974·Granted Feb 3, 1976·32 cites·11 claims
- 2177US6719553B1Mold-closing unit for an injection molding machineFiled 2000·Granted Apr 13, 2004·13 cites·20 claims
- 2277US4737095AComponent changing apparatus serving a group of injection molding machinesHEHL KARL·Filed 1987·Granted Apr 12, 1988·37 cites·23 claims
- 2377US4094621ADie closing unit with oversize injection molding dieHEHL KARL·Filed 1977·Granted Jun 13, 1978·31 cites·6 claims
- 2476US4645446AInjection molding machine with self-connecting ejection deviceHEHL KARL·Filed 1985·Granted Feb 24, 1987·34 cites·10 claims
- 2576US4518338AInjection molding machine with mold changing and mold preconditioning deviceHEHL KARL·Filed 1983·Granted May 21, 1985·34 cites·23 claims
- 2675US5916501AProcess for regulating or controlling an injection molding machineFiled 1996·Granted Jun 29, 1999·35 cites·12 claims
- 2775US4690436APipe couplingHEHL KARL·Filed 1985·Granted Sep 1, 1987·40 cites·10 claims
- 2874US4462783AMechanism for exchanging molding dies in an injection molding machineHEHL KARL·Filed 1983·Granted Jul 31, 1984·30 cites·17 claims
- 2973US6835061B1Device and method for carrying out a two-stage linear movementFiled 2000·Granted Dec 28, 2004·10 cites·24 claims
- 3073US6655947B1Injection molding machine with a protective coverFiled 2000·Granted Dec 2, 2003·10 cites·12 claims
- 3173US4678572AVented cover assembly with filter insert for fluid reservoirHEHL KARL·Filed 1986·Granted Jul 7, 1987·34 cites·15 claims
- 3273US4021181ATie rod connection for die closing unit of injection molding machineHEHL KARL·Filed 1976·Granted May 3, 1977·25 cites·5 claims
- 3372US4629410ADual-hopper injection unit for injection molding machineHEHL KARL·Filed 1983·Granted Dec 16, 1986·29 cites·9 claims
- 3471US4671764ALatching device for injection molding diesHEHL KARL·Filed 1985·Granted Jun 9, 1987·32 cites·13 claims
- 3571US4315728AAdjustable slide shoe for die carrier plate of injection molding machineHEHL KARL·Filed 1980·Granted Feb 16, 1982·23 cites·12 claims
- 3671US3982856ABase and power unit for injection molding machineHEHL KARL·Filed 1975·Granted Sep 28, 1976·20 cites·12 claims
- 3770US7890880B2Method and device for interactive control of a machineHEHL KARL·Filed 2004·Granted Feb 15, 2011·8 cites·25 claims
- 3870US4669533ACooling and filtering unit for hydraulic drive fluidHEHL KARL·Filed 1985·Granted Jun 2, 1987·25 cites·17 claims
- 3969US4712991AHydraulic control system for injection unit of injection molding machineHEHL KARL·Filed 1985·Granted Dec 15, 1987·28 cites·17 claims
- 4068US6386859B1Injection molding machine with an extractorFiled 2000·Granted May 14, 2002·7 cites·11 claims
- 4167US6394780B1Injection molding unit for an injection molding machineFiled 1999·Granted May 28, 2002·24 cites·14 claims
- 4267US5945046AProcess for regulating the tool inner pressure curve of a cyclically working machineARBURG GMBH & CO·Filed 1996·Granted Aug 31, 1999·39 cites·18 claims
- 4367US4768559ACooling apparatus on a plastics injection molding machineHEHL KARL·Filed 1987·Granted Sep 6, 1988·22 cites·12 claims
- 4467US4196634AValve device for selectively connecting a pressure gauge to a plurality of pressure linesHEHL KARL·Filed 1978·Granted Apr 8, 1980·18 cites·16 claims
- 4566US8221107B2Electrically driven mold clamping unit on an injection molding machineHEHL KARL·Filed 2009·Granted Jul 17, 2012·2 cites·10 claims
- 4665US4823551AHydraulic control circuit for an injection molding with two loads driven by a pumpHEHL KARL·Filed 1985·Granted Apr 25, 1989·24 cites·7 claims
- 4765US4680002AInjection molding machineHEHL KARL·Filed 1986·Granted Jul 14, 1987·24 cites·19 claims
- 4865US4382241AValve adjustment unit for hydraulic proportional-response valveHEHL KARL·Filed 1980·Granted May 3, 1983·14 cites·18 claims
- 4965US4105385ACompact die closing unit for injection molding machinesHEHL KARL·Filed 1977·Granted Aug 8, 1978·25 cites·13 claims
- 5064US4863368AInjection molding machine for a selective linear or central charging of mold assembliesHEHL KARL·Filed 1988·Granted Sep 5, 1989·23 cites·11 claims
Showing the top 50 of 177 patent records by PatentIndex Score.
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