Unit Rig & Equipment
34Patents
0Active
34Granted
36Portfolio score
Filing activity: Jun 18, 1975 → Oct 19, 1987
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4798398A | Dual rate equalizer suspension | Performing Operations; Transporting | 20 | Expired |
| US4063375A | Conveyor folding and moldboard operation for excavating and loading systems | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4706723A | Rim for heavy, off-road vehicles | Performing Operations; Transporting | 17 | Expired |
| US4006832A | Bucket door snubber | Fixed Constructions | 15 | Expired |
| US4698561A | Use of SCR's in extended retarding | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4183158A | Conveyor folding and deflector operation for excavating and loading systems | Fixed Constructions | 14 | Expired |
| US4190130A | Dual steering system for off-highway vehicles | Performing Operations; Transporting | 12 | Expired |
| US4744132A | Lock ring assembly and disassembly method | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4157623A | Conveyor folding and moldboard operation for excavating and loading systems | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4069605A | Conveyor folding and moldboard operation for excavating and loading systems | Fixed Constructions | 10 | Expired |
| US4116014A | Excavating and pipeline installation system | Fixed Constructions | 10 | Expired |
| US4162584A | Excavating wheel with cam assisted bucket wall ejector | Emerging Cross-Sectional Technologies | 9 | Expired |
| US3982340A | Two wheel excavating and loading system | Fixed Constructions | 8 | Expired |
| US3974580A | All electric excavating and loading system | Fixed Constructions | 8 | Expired |
| US4843910A | Pinion gear speed disc brake | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4517839A | Off-highway vehicle systems simulator and control panel testing | Physics | 7 | Expired |
| US4749065A | Disc brake retainer | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4003148A | Wheel excavator with pivotally mounted side cutting teeth | Fixed Constructions | 6 | Expired |
| US4197662A | Means for driving the back walls of a bucket excavator | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4030217A | Two wheel excavating and loading system | Fixed Constructions | 5 | Expired |
| US4155181A | Conveyor folding and moldboard operation for excavating and loading systems | Emerging Cross-Sectional Technologies | 4 | Expired |
| US3997990A | Angularly disposed single wheel excavator | Fixed Constructions | 4 | Expired |
| US4156977A | Conveyor folding and moldboard operation for excavating and loading systems | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4180927A | Digging bucket cylinder powered ejector system | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4629211A | Frame and axle for heavy duty trucks | Emerging Cross-Sectional Technologies | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.