David E. Smith
25Patents
12h-index
26Co-inventors
81Inventor score
Filing activity: Jul 6, 1976 → Feb 19, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4589327A | Firing lock with safety system for self loading fire arms | Mechanical Engineering; Lighting; Heating | 75 | Expired |
| US4453825A | Distance transducer | Physics | 69 | Expired |
| US4594935A | Breech locking system for self loading fire arms | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US6543948B2 | Printer with vacuum platen having selectable active area | Performing Operations; Transporting | 29 | Expired |
| US4915011A | Breech locking system for self loading firearms | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US4615132A | Self loading pistol having a rear sight which secures a detachable breech block insert | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US5024016A | Self-loading pistols | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US5850961A | Quick exhaust remote trigger valve for fastener driving tool | Performing Operations; Transporting | 23 | Expired |
| US4742407A | Tape threading device | Physics | 22 | Expired |
| US4747224A | Firearm magazine catch | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US7913764B2 | Return line mounted pump for riserless mud return system | Fixed Constructions | 15 | Active |
| US8973417B2 | Electronically-controlled removable core lock | Emerging Cross-Sectional Technologies | 15 | Active |
| US4574509A | Ambidextrous cartridge magazine retaining catch for self loading fire arms | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US6079605A | Quick exhaust remote trigger valve for fastener driving tool | Performing Operations; Transporting | 12 | Expired |
| US4717090A | Device for restoring and removing a tape leader block to and from a tape cassette | Physics | 12 | Expired |
| US4593601A | Recoil spring system for self loading fire arms | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4709873A | Device for positioning a tape threader pin in a take-up reel | Physics | 9 | Expired |
| US4390052A | Motorcycle tire | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7296870B2 | Managing consumable wear in printers | Physics | 7 | Expired |
| US4681278A | Guide for restoring and removing a tape leader block to and from a tape cassette | Physics | 7 | Expired |
| USD275387S | Tire | General | 7 | Expired |
| US4554846A | Two-piece retainer for epicyclic transmissions | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| USD247634S | Body attached tethered ball game goal | General | 4 | Expired |
| US6428161B1 | Drying apparatus | Performing Operations; Transporting | 3 | Expired |
| US11584544B2 | Cockpit access security system | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.