Assignee
HEMSCHEIDT MASCHF HERMANN
DE·48 granted patents·730 citations·filing 1974–1993
Top patents by PatentIndex Score
48 records- 0193US4973854AHydraulic shock-absorber and vibration damper with adjustable dampingHEMSCHEIDT MASCHF HERMANN·Filed 1988·Granted Nov 27, 1990·68 cites·15 claims
- 0293US4899853AHydraulic shock-absorber and vibration damper with an inner tubeHEMSCHEIDT MASCHF HERMANN·Filed 1988·Granted Feb 13, 1990·69 cites·3 claims
- 0390US5246247AHydropneumatic suspension systemHEMSCHEIDT MASCHF HERMANN·Filed 1990·Granted Sep 21, 1993·81 cites·18 claims
- 0486US4076279APlug-in couplingHEMSCHEIDT MASCHF HERMANN·Filed 1976·Granted Feb 28, 1978·97 cites·4 claims
- 0578US4552172APressure-limiting hydraulic valveHEMSCHEIDT MASCHF HERMANN·Filed 1983·Granted Nov 12, 1985·33 cites·1 claims
- 0674US4660595APressure-limiting valveHEMSCHEIDT MASCHF HERMANN·Filed 1985·Granted Apr 28, 1987·33 cites·1 claims
- 0769US4189258AWalking mine-roof supportHEMSCHEIDT MASCHF HERMANN·Filed 1978·Granted Feb 19, 1980·15 cites·9 claims
- 0868US4465408AMine-roof support control mechanismHEMSCHEIDT MASCHF HERMANN·Filed 1983·Granted Aug 14, 1984·17 cites·14 claims
- 0960US5146948ADamping valve with improved damping adjustmentHEMSCHEIDT MASCHF HERMANN·Filed 1990·Granted Sep 15, 1992·22 cites·8 claims
- 1059US5050060AIntrinsically safe power supply unitHEMSCHEIDT MASCHF HERMANN·Filed 1990·Granted Sep 17, 1991·22 cites·3 claims
- 1158US3985328AProp-and-shoe assemblies of self-advancing mine roof-supportsHEMSCHEIDT MASCHF HERMANN·Filed 1975·Granted Oct 12, 1976·10 cites·6 claims
- 1257US4155675AHydraulic walking roof-support frameHEMSCHEIDT MASCHF HERMANN·Filed 1978·Granted May 22, 1979·10 cites·7 claims
- 1356US4474510AHydraulic mine-roof supportHEMSCHEIDT MASCHF HERMANN·Filed 1982·Granted Oct 2, 1984·11 cites·2 claims
- 1452US4694730AProp control valveHEMSCHEIDT MASCHF HERMANN·Filed 1986·Granted Sep 22, 1987·18 cites·1 claims
- 1552US4266892AHydraulic roof-support frameHEMSCHEIDT MASCHF HERMANN·Filed 1979·Granted May 12, 1981·9 cites·6 claims
- 1651US4597557AHydraulically-controlled non-return valveHEMSCHEIDT MASCHF HERMANN·Filed 1985·Granted Jul 1, 1986·20 cites·3 claims
- 1751US4313698AHydraulic shield-type supportHEMSCHEIDT MASCHF HERMANN·Filed 1980·Granted Feb 2, 1982·12 cites·4 claims
- 1851US3961682ASound-absorbing wall elementHEMSCHEIDT MASCHF HERMANN·Filed 1974·Granted Jun 8, 1976·19 cites·4 claims
- 1950US5275469AMethod of working coal seams to a defined preset depth of cutting during ploughing with a cutterHEMSCHEIDT MASCHF HERMANN·Filed 1992·Granted Jan 4, 1994·19 cites·8 claims
- 2048US4557293AArrangement for controlling an electro-hydraulic valveHEMSCHEIDT MASCHF HERMANN·Filed 1983·Granted Dec 10, 1985·10 cites·4 claims
- 2145US4737051AMobile mine-roof supportHEMSCHEIDT MASCHF HERMANN·Filed 1986·Granted Apr 12, 1988·15 cites·7 claims
- 2245US4158326AControl deviceHEMSCHEIDT MASCHF HERMANN·Filed 1977·Granted Jun 19, 1979·5 cites·9 claims
- 2342US4520712AAxial piston machine having a sealed bearing boxHEMSCHEIDT MASCHF HERMANN·Filed 1983·Granted Jun 4, 1985·10 cites·6 claims
- 2441US4716996AHydraulic rotation damperHEMSCHEIDT MASCHF HERMANN·Filed 1986·Granted Jan 5, 1988·13 cites·8 claims
- 2539US4505299A3-Port, 2-position directional control valveHEMSCHEIDT MASCHF HERMANN·Filed 1983·Granted Mar 19, 1985·4 cites·4 claims
- 2639US4095616AHydraulic controllerHEMSCHEIDT MASCHF HERMANN·Filed 1976·Granted Jun 20, 1978·5 cites·17 claims
- 2737US4662797AAdaptable housing for a video terminalHEMSCHEIDT MASCHF HERMANN·Filed 1985·Granted May 5, 1987·6 cites·19 claims
- 2837US4155375AMultiple valve control deviceHEMSCHEIDT MASCHF HERMANN·Filed 1977·Granted May 22, 1979·3 cites·3 claims
- 2936US4330226ARoof-support distancing apparatusHEMSCHEIDT MASCHF HERMANN·Filed 1980·Granted May 18, 1982·4 cites·8 claims
- 3036US4155676AHydraulic walking roof-support frameHEMSCHEIDT MASCHF HERMANN·Filed 1978·Granted May 22, 1979·4 cites·12 claims
- 3135US4757835AChange-over valve for hydraulic walking mine-roof supportsHEMSCHEIDT MASCHF HERMANN·Filed 1986·Granted Jul 19, 1988·7 cites·3 claims
- 3234US4676698AHydraulic valve control apparatusHEMSCHEIDT MASCHF HERMANN·Filed 1985·Granted Jun 30, 1987·6 cites·14 claims
- 3334US4182585ADouble-plate control deviceHEMSCHEIDT MASCHF HERMANN·Filed 1978·Granted Jan 8, 1980·2 cites·8 claims
- 3433US4064701AHydraulic shield assemblyHEMSCHEIDT MASCHF HERMANN·Filed 1976·Granted Dec 27, 1977·3 cites·4 claims
- 3532US5362133AMethod of mining coal seams at a defined preset depth of cutting during ploughing with a cutterHEMSCHEIDT MASCHF HERMANN·Filed 1993·Granted Nov 8, 1994·7 cites·8 claims
- 3631US3987634ARoof-supporting arrangementHEMSCHEIDT MASCHF HERMANN·Filed 1976·Granted Oct 26, 1976·2 cites·6 claims
- 3730US5181451AControl system for longwall face support framesHEMSCHEIDT MASCHF HERMANN·Filed 1991·Granted Jan 26, 1993·5 cites·7 claims
- 3830US4964675AMethod of electro-hydraulic control of longwall mine unitsHEMSCHEIDT MASCHF HERMANN·Filed 1989·Granted Oct 23, 1990·5 cites·4 claims
- 3930US4782736APressure-control valveHEMSCHEIDT MASCHF HERMANN·Filed 1986·Granted Nov 8, 1988·2 cites·6 claims
- 4030US4769538APiston stroke digital determination meansHEMSCHEIDT MASCHF HERMANN·Filed 1986·Granted Sep 6, 1988·1 cites·8 claims
- 4129US5401123AControl device for mine-roof supportHEMSCHEIDT MASCHF HERMANN·Filed 1993·Granted Mar 28, 1995·2 cites·6 claims
- 4229US5017051AElectrohydraulic control means for hydraulic self-advancing support unitsHEMSCHEIDT MASCHF HERMANN·Filed 1989·Granted May 21, 1991·10 cites·36 claims
- 4329US4476898AMine-roof support control meansHEMSCHEIDT MASCHF HERMANN·Filed 1982·Granted Oct 16, 1984·2 cites·4 claims
- 4428US4380410AMine-roof supportHEMSCHEIDT MASCHF HERMANN·Filed 1981·Granted Apr 19, 1983·3 cites·7 claims
- 4527US5011433AMultipole connector for control devices in underground workingHEMSCHEIDT MASCHF HERMANN·Filed 1989·Granted Apr 30, 1991·4 cites·12 claims
- 4626US4073150ASuspended valve control deviceHEMSCHEIDT MASCHF HERMANN·Filed 1977·Granted Feb 14, 1978·0 cites·4 claims
- 4721US5217733ADevice for an injection mouldHEMSCHEIDT MASCHF HERMANN·Filed 1992·Granted Jun 8, 1993·3 cites·4 claims
- 4813US4892446AGroup control means for hydraulic mine-roof supportsHEMSCHEIDT MASCHF HERMANN·Filed 1989·Granted Jan 9, 1990·2 cites·4 claims
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