Issued Patents All Time
Showing 51–75 of 79 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5582069 | Engine accessory torque and engine deceleration rate determination method/system | — | 1996-12-10 |
| 5528950 | Transmission inertia brake with ball ramp actuator | Gregory J. Organek, Ronald K. Markyvech | 1996-06-25 |
| 5517876 | Transmission spring loaded shift device | Ronald K. Markyvech | 1996-05-21 |
| 5517411 | Neutral attainment control system/method for controlling shifting in vehicular automated mechanical transmission systems | Ronald K. Markyvech | 1996-05-14 |
| 5509867 | Engine flywheel torque determination method/system | — | 1996-04-23 |
| 5508916 | Control for engagement of positive clutches in automated mechanical transmission systems | Ronald K. Markyvech | 1996-04-16 |
| 5491630 | Method/system for resetting the value of a control parameter indicative of gross combined weight of vehicles to a default value thereof | Ronald K. Markyvech | 1996-02-13 |
| 5490063 | Control method/system including determination of an updated value indicative of gross combination weight of vehicles | — | 1996-02-06 |
| 5487005 | Method/system for determination of gross combined weight of vehicles equipped with electronic data links | — | 1996-01-23 |
| 5444623 | Reengagement control/method for mechanical transmission system with automatic shift implementation | — | 1995-08-22 |
| 5425689 | Engine brake enhanced upshift control method/system | — | 1995-06-20 |
| 5335566 | Shift control method/system | Ronald K. Markyvech | 1994-08-09 |
| 5279172 | Four position fluid-actuated piston arrangement | — | 1994-01-18 |
| 5272939 | Shift enable control method/system | Ronald K. Markyvech | 1993-12-28 |
| 5221401 | Method for bonding friction material onto a frustoconical surface | — | 1993-06-22 |
| RE34260 | Dual pressure pressurized fluid actuated shifting mechanism | Ronald K. Markyvech | 1993-05-25 |
| 5191804 | Dual force fluid actuated shift device | — | 1993-03-09 |
| 5186066 | Dual pressure pressure regulator | William R. Pankratz, John Dresden, III, Ronald K. Markyvech | 1993-02-16 |
| 5091041 | Bonding apparatus for bonding friction material | — | 1992-02-25 |
| 5081588 | Start from stop control method | Russell C. Holmes, Ronald K. Markyvech, William J. Mack | 1992-01-14 |
| 5053962 | Automatic shift preselection mode for mechanical transmission system with semi-automatic shift implementation | — | 1991-10-01 |
| 5053959 | Control system and method for sensing and indicating neutral in a semi-automatic mechanical transmission system | — | 1991-10-01 |
| 5053961 | Semi-automatic shift implementation for mechanical transmission system | — | 1991-10-01 |
| 5033596 | Resilient friction material | — | 1991-07-23 |
| 4991099 | Control system/method for controlling shifting of a range type compound transmission using input shaft and mainshaft speed sensors | Ronald K. Markyvech | 1991-02-05 |