Inventor · Farmington, CT, US

Daryl J. Marvin

61Patents
7h-index
83Co-inventors
75Inventor score

Filing activity: Mar 18, 1996 → Jul 31, 2020

Most-cited inventions

PatentTitleAreaCited byStatus
US5646496A Apparatus and method for generating digital position signals for a rotatable shaft Physics 45 Expired
US5760562A Apparatus and method for generating digital position signals for a rotatable shaft Physics 29 Expired
US8939262B2 Elevator over-acceleration and over-speed protection system Performing Operations; Transporting 28 Active
US5808880A Power factor controller for active converter Performing Operations; Transporting 22 Expired
US8631909B2 Electromagnetic safety trigger Performing Operations; Transporting 16 Active
US8333265B2 Elevator system with regulated input power Electricity 16 Active
US6401875B1 Absolute position sensing method and apparatus for synchronous elevator machines by detection stator iron saturation Electricity 12 Expired
US8820483B2 Elevator machine support Performing Operations; Transporting 6 Active
US9688512B2 Elevator brake Mechanical Engineering; Lighting; Heating 5 Active
US9296589B2 Elevator regenerative drive control referenced to DC bus Electricity 5 Active
US9422135B2 Elevator drive power supply control Performing Operations; Transporting 5 Active
US10781075B2 Emergency safety actuator for an elevator Performing Operations; Transporting 4 Active
US6483271B1 Motor drive parameters Electricity 4 Expired
US9372083B2 Device and method for determining position information using accelerometers on a rotating component Performing Operations; Transporting 3 Active
US8459415B2 Elevator motion profile control including non-instantaneous transition between jerk values Performing Operations; Transporting 3 Active
US8827044B2 Over-acceleration and over-speed detection and processing system Performing Operations; Transporting 3 Active
US9975729B2 Elevator system using dynamic braking Electricity 3 Active
US9915307B2 Brake Mechanical Engineering; Lighting; Heating 2 Active
US9511976B2 Position feedback for elevator system Physics 2 Active
US10494227B2 Braking system resetting mechanism for a hoisted structure Performing Operations; Transporting 2 Active
US9935494B2 Elevator power supply for inverter controller Electricity 2 Active
US9815665B2 Battery mounting in elevator hoistway Performing Operations; Transporting 2 Active
US10000366B2 Brake torque control Mechanical Engineering; Lighting; Heating 1 Active
US11078045B2 Electronic safety actuator for lifting a safety wedge of an elevator Performing Operations; Transporting 1 Active
US11053097B2 Magnet assembly for an electronic safety brake actuator (ESBA) Performing Operations; Transporting 1 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.