Commercial Shearing, Inc.
42Patents
0Active
42Granted
34Portfolio score
Filing activity: Apr 22, 1974 → Feb 18, 1988
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4682939A | Gear pump or motor with tooth tips of dissimilar metal | Mechanical Engineering; Lighting; Heating | 32 | Expired |
| USD273586S | Convertable pump and motor | General | 28 | Expired |
| US4879501A | Constant speed hydrostatic drive system | Electricity | 28 | Expired |
| US4777981A | Magnetic detent joy stick and stack remote control valves | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4830536A | Method and apparatus for tunnel lining | Fixed Constructions | 21 | Expired |
| US4470776A | Methods and apparatus for gear pump lubrication | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4835359A | Method of manufacturing hemispherical tank heads | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4187877A | Compensated work port fluid valves | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4497597A | Cribbing | Fixed Constructions | 13 | Expired |
| US4825752A | End-of-stroke bypass valve in piston for impact relief in hydraulic tilt and trim cylinder | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4086767A | Track drive circuits with synchronization and steering systems | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4565469A | Cribbing | Fixed Constructions | 12 | Expired |
| US4361169A | Pressure compensated control valves | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4352375A | Control valves | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4803415A | Stepper motor control circuit and apparatus | Electricity | 10 | Expired |
| US4262915A | Low friction drag seals | Emerging Cross-Sectional Technologies | 10 | Expired |
| USD273587S | Convertable pump and motor | General | 9 | Expired |
| US4585024A | Air shift conversion apparatus for manual valves | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4095617A | Control valves | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4358724A | Solid state servo amplifier for a D.C. motor position control system | Electricity | 8 | Expired |
| US4242066A | Rotary pumps and motors and thrust plates therefor | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4709724A | Fluid valve structures | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4337018A | Rotary impeller pump or motor with counterbalancing chamber in thrust plate bearing counterbore | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4349319A | Pressure and flow compensated control system with constant torque and viscosity sensing over-ride | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4839935A | Mini arched bridge | Fixed Constructions | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.