DIESEL ENGINE RETARDERS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F01L CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES 2236
 
  
 
F02D CONTROLLING COMBUSTION ENGINES 1954
 
  
 
F02M SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF 380
 
  
 
B60K ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS; AUXILIARY DRIVES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST, OR FUEL SUPPLY, OF PROPULSION UNITS, IN VEHICLES 192
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 171
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING172

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6868824 System and method of gas recirculation in an internal combustion engineJun 11, 03Mar 22, 05[F02D]
6866017 Method and system for engine braking in an internal combustion engine using a stroke limited high pressure engine brakeMar 21, 02Mar 15, 05[F02D]
6732686 Valve opening mechanismAug 31, 01May 11, 04[F01L]
6718940 Hydraulic lash adjuster with compression release brakeSep 12, 01Apr 13, 04[F01L]
6594996 Method and system for engine braking in an internal combustion engine with exhaust pressure regulation and turbocharger controlSep 24, 01Jul 22, 03[F02D]
6591795 Captive volume accumulator for a lost motion systemMay 15, 02Jul 15, 03[F01L]
6450144 Method and apparatus for hydraulic clip and reset of engine brake systems utilizing lost motionDec 20, 00Sep 17, 02[F01L, F02D]
6422186 Lost motion rocker arm system with integrated compression brakeSep 08, 00Jul 23, 02[F01L]
6415752 Captive volume accumulator for a lost motion systemSep 15, 00Jul 09, 02[F01L]
6394050 Actuator piston assembly for a rocker arm systemSep 15, 00May 28, 02[F01L]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6691674 Latched reset mechanism for engine brakeExpiredJun 13, 02Feb 17, 04[F02D]
6647954 Method and system of improving engine braking by variable valve actuationExpiredNov 09, 01Nov 18, 03[F02D]
2003/0140,876 Engine valve actuation system and method using reduced pressure common rail and dedicated engine valveAbandonedJan 30, 03Jul 31, 03[F01L]
6550433 Engine valve actuator with valve seating controlExpiredJun 24, 02Apr 22, 03[F01L]
6412457 Engine valve actuator with valve seating controlExpiredAug 28, 98Jul 02, 02[F01L]
6394067 Apparatus and method to supply oil, and activate rocker brake for multi-cylinder retardingExpiredSep 18, 00May 28, 02[F02D]
6334429 Integrated lost motion rocker brake with control valve for lost motion clip/resetExpiredSep 18, 00Jan 01, 02[F02D]
6273057 Hydraulically-actuated fail-safe stroke-limiting pistonExpiredAug 19, 99Aug 14, 01[F02D]
6267098 Valve operating system having full authority lost motionExpiredNov 24, 98Jul 31, 01[F01L, F02D]
6257183 Lost motion full authority valve actuation systemExpiredNov 04, 98Jul 10, 01[F01L]
6179096 Exhaust brake variable bypass circuitExpiredNov 12, 97Jan 30, 01[B60T]
6142330 Locking ring for containersExpiredAug 24, 99Nov 07, 00[B65D]
6112710 Method and system start-up apparatus for removing air and debris from a valve actuation systemExpiredNov 20, 98Sep 05, 00[F01L]
6109027 Exhaust restriction deviceExpiredFeb 17, 99Aug 29, 00[F01N]
6095115 Self-clipping slave piston device with lash adjustment for a compression release engine retarderExpiredFeb 02, 99Aug 01, 00[F02D]
6085721 Bar engine brakeExpiredSep 02, 98Jul 11, 00[F02D]
6039022 Co-axial master piston assemblyExpiredSep 29, 98Mar 21, 00[F01L, F02D]
5947235 System and method of exhaust brake controlExpiredDec 04, 96Sep 07, 99[B60T]
5845748 Low restriction exhaust brakeExpiredDec 04, 96Dec 08, 98[F02D]
5746175 Four-cycle internal combustion engines with two-cycle compression release brakingExpiredJul 22, 96May 05, 98[F01L]

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