Assignee
HOERBIGER VENTILWERKE AG
AT·33 granted patents·790 citations·filing 1974–1997
Top patents by PatentIndex Score
33 records- 0194US5343894APiezo valveHOERBIGER VENTILWERKE AG·Filed 1992·Granted Sep 6, 1994·95 cites·2 claims
- 0293US4700610ACylinder tube strain measurement feedback for piston position controlHOERBIGER VENTILWERKE AG·Filed 1985·Granted Oct 20, 1987·63 cites·3 claims
- 0380US5533873AInduction regulator valve for rotary compressorsHOERBIGER VENTILWERKE AG·Filed 1995·Granted Jul 9, 1996·55 cites·12 claims
- 0480US5513674ASealing arrangementHOERBIGER VENTILWERKE AG·Filed 1994·Granted May 7, 1996·43 cites·7 claims
- 0580US5335926AHydraulic actuating apparatus for opening and closing a vehicle cover with auxiliary manual hydraulic pumpHOERBIGER VENTILWERKE AG·Filed 1992·Granted Aug 9, 1994·29 cites·3 claims
- 0680US5052434AValve, especially for compressorsHOERBIGER VENTILWERKE AG·Filed 1990·Granted Oct 1, 1991·41 cites·17 claims
- 0777US5634492ACompressor valve lifterHOERBIGER VENTILWERKE AG·Filed 1995·Granted Jun 3, 1997·42 cites·10 claims
- 0877US4924906ARing valveHOERBIGER VENTILWERKE AG·Filed 1989·Granted May 15, 1990·33 cites·18 claims
- 0976US4869289AAdjustable compressor valve which can accommodate changing operating conditions in the compressor to which it is attachedHOERBIGER VENTILWERKE AG·Filed 1988·Granted Sep 26, 1989·32 cites·6 claims
- 1075US4098487ADevice for controlling oil injection to a screw compressorHOERBIGER VENTILWERKE AG·Filed 1977·Granted Jul 4, 1978·21 cites·3 claims
- 1173US5411375AIntake control valveHOERBIGER VENTILWERKE AG·Filed 1993·Granted May 2, 1995·32 cites·5 claims
- 1271US5833209ADevice and method for influencing the periodic stroke movement of the closing element of a valveHOERBIGER VENTILWERKE AG·Filed 1995·Granted Nov 10, 1998·31 cites·4 claims
- 1366US5404961APower steering system including piston damping mechanismHOERBIGER VENTILWERKE AG·Filed 1994·Granted Apr 11, 1995·15 cites·7 claims
- 1466US4869291ACompressor plate valveHOERBIGER VENTILWERKE AG·Filed 1988·Granted Sep 26, 1989·23 cites·10 claims
- 1565US4569636ADevice for regulating the delivery of rotary compressorsHOERBIGER VENTILWERKE AG·Filed 1985·Granted Feb 11, 1986·22 cites·5 claims
- 1662US5584673ADevice for reducing the pressure of a compressor in the idling and shutdown modeHOERBIGER VENTILWERKE AG·Filed 1995·Granted Dec 17, 1996·23 cites·6 claims
- 1761US5678603APlate valve, particularly for piston compressorsHOERBIGER VENTILWERKE AG·Filed 1995·Granted Oct 21, 1997·31 cites·8 claims
- 1861US4632145ALifting device for the closure plate of compressor valvesHOERBIGER VENTILWERKE AG·Filed 1984·Granted Dec 30, 1986·25 cites·13 claims
- 1953US5988985AMethod and apparatus for controlling compressor valves in a piston compressorHOERBIGER VENTILWERKE AG·Filed 1997·Granted Nov 23, 1999·16 cites·16 claims
- 2052US5244357AMethod for continuous control of delivery rate of reciprocating compressors and device for carrying out the methodHOERBIGER VENTILWERKE AG·Filed 1992·Granted Sep 14, 1993·15 cites·10 claims
- 2152US4871299AScrew compressor unit including a centrifugal clutchHOERBIGER VENTILWERKE AG·Filed 1988·Granted Oct 3, 1989·11 cites·6 claims
- 2247US4799507AAdjustable compressor valve which can accommodate changing operating conditions in the compressor to which it is attachedHOERBIGER VENTILWERKE AG·Filed 1987·Granted Jan 24, 1989·13 cites·9 claims
- 2346US3971409APressure regulator for pneumatic systemsHOERBIGER VENTILWERKE AG·Filed 1974·Granted Jul 27, 1976·7 cites·2 claims
- 2444US5375507AHydraulic cylinderHOERBIGER VENTILWERKE AG·Filed 1993·Granted Dec 27, 1994·9 cites·13 claims
- 2544US4282766AAdjusting mechanism for regulating devicesHOERBIGER VENTILWERKE AG·Filed 1979·Granted Aug 11, 1981·10 cites·6 claims
- 2644US3945397APlate valveHOERBIGER VENTILWERKE AG·Filed 1974·Granted Mar 23, 1976·10 cites·6 claims
- 2743US4755110APiston-type compressorHOERBIGER VENTILWERKE AG·Filed 1987·Granted Jul 5, 1988·12 cites·7 claims
- 2842US5318271APiezo valveHOERBIGER VENTILWERKE AG·Filed 1992·Granted Jun 7, 1994·8 cites·4 claims
- 2937US5409076APower steering system for motor vehiclesHOERBIGER VENTILWERKE AG·Filed 1994·Granted Apr 25, 1995·4 cites·4 claims
- 3037US5390700AAutomatic valveHOERBIGER VENTILWERKE AG·Filed 1993·Granted Feb 21, 1995·12 cites·5 claims
- 3126US5222516AValve seat plate for piston compressorHOERBIGER VENTILWERKE AG·Filed 1991·Granted Jun 29, 1993·5 cites·6 claims
- 3222US5249595AValve, in particular for a piston-type compressorHOERBIGER VENTILWERKE AG·Filed 1991·Granted Oct 5, 1993·2 cites·11 claims
- 3319US5287883AValve, in particular for compressorsHOERBIGER VENTILWERKE AG·Filed 1992·Granted Feb 22, 1994·0 cites·7 claims
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