Peter Herkel
38Patents
9h-index
65Co-inventors
78Inventor score
Filing activity: Sep 28, 1990 → Nov 20, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6173814A | Electronic safety system for elevators having a dual redundant safety bus | Electricity | 96 | Expired |
| US5076399A | Elevator start control technique for reduced start jerk and acceleration overshoot | Performing Operations; Transporting | 20 | Expired |
| US5157228A | Adjusting technique for a digital elevator drive system | Performing Operations; Transporting | 18 | Expired |
| US5677519A | Elevator leveling adjustment | Performing Operations; Transporting | 17 | Expired |
| US6170614A | Electronic overspeed governor for elevators | Performing Operations; Transporting | 16 | Expired |
| US8162108B2 | Elevator having a limit switch for controlling power to the drive system as an elevator car approaches a shallow pit or a low overhead | Performing Operations; Transporting | 13 | Active |
| US8365870B2 | Foldable handrail and safety switch arrangement on top of an elevator car | Performing Operations; Transporting | 13 | Active |
| US7523809B2 | Elevator top of car safety | Performing Operations; Transporting | 10 | Expired |
| US6079521A | Measuring elevator position with scanning laser beam | Performing Operations; Transporting | 9 | Expired |
| US8997968B2 | Automatic adjustment of parameters for safety device | Performing Operations; Transporting | 9 | Active |
| US5831227A | Differential magnetic alignment of an elevator and a landing | Performing Operations; Transporting | 9 | Expired |
| US5549179A | Cost effective control of the main switches of an elevator drive motor | Performing Operations; Transporting | 9 | Expired |
| US5765664A | Elevator drive fault detector | Electricity | 7 | Expired |
| US6591947B2 | Use of multi-state sensors | Performing Operations; Transporting | 7 | Expired |
| US9422133B2 | Elevator car control in a landing zone using a machine brake in response to undesired car movement | Performing Operations; Transporting | 6 | Active |
| US9051155B2 | Elevator rescue system including communications over a rescue operation signal transmission path | Performing Operations; Transporting | 5 | Active |
| US9120646B2 | Systems and methods for determining functionality of an automatic door system | Performing Operations; Transporting | 5 | Active |
| US9938115B2 | System and method for limiting over-voltage in power supply system | Performing Operations; Transporting | 5 | Active |
| US9376289B2 | Elevator control system with sleep monitor | Emerging Cross-Sectional Technologies | 4 | Active |
| US9371210B2 | Elevator safety system having multiple buses | Performing Operations; Transporting | 4 | Active |
| US8960407B2 | Signal correlation for missing step detection in conveyors | Performing Operations; Transporting | 3 | Active |
| US5260863A | Control of a discontinuous current by a thyristor rectifier with inductive load | Electricity | 3 | Expired |
| US5889238A | Deceleration time for an elevator car | Performing Operations; Transporting | 2 | Expired |
| US11485608B2 | Elevator safety system | Performing Operations; Transporting | 2 | Active |
| US7204347B2 | Arrhythmic pulse sequence for sonic distance measurement | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.