Inventor

PETERSEN CHRISTIAN C

US44 patents

⚠️ This page may combine multiple inventors who share the name “PETERSEN CHRISTIAN C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PETERSEN CHRISTIAN C

POLAROID CORP

Apparatus for automatically controlling transmission of light through a lens system

Method and apparatus for precisely moving a motor armature

Apparatus for orienting magnetic particles in recording media

Linear motor

Magnetic position indicator using multiple probes

Electric motor having improved operating characteristics

Shutter blade drive system

Magnetic position indicator and actuator using same

Method of comminuting rare earth powder for producing rare earth magnet

Electromagnetic actuators

Method and apparatus which change magnetic forces of a linear motor

Electromagnetic blade mechanism

Twin rotatable electromagnetically driven blade mechanism

Electromagnetic actuator generating equal and opposing force vectors

Electromagnetic shutter mechanism

Camera motor belt drive system

Camera shutter having bobbin driven blades

Efficient electromagnetic actuator usable as photographic shutter

Apparatus for continuously incrementing an output member

Film advancing and processing apparatus

Flip flash having final flash signal

Method and apparatus for controlling transducer

Magnetic positioning and contouring of a blade mechanism

Galvano-magnetic effect control system for photographic apparatus

PETERSEN TECHNOLOGY CORP

PM motor and generator with a vertical stator core assembly formed of pressure shaped processed ferromagnetic particles

Multiphase motors with single point sensing based commutation

Multiphase motors with single point sensing based commutation

PM motor and generator with a vertical stator core assembly formed of pressure shaped processed ferromagnetic particles

Apparatus and method for dissipating a portion of the commutation derived collapsing field energy in a multi-phase unipolar electric motor

Apparatus and method for dissipating a portion of the commutation derived collapsing field energy in a multi-phase unipolar electric motor

Electrodynamic apparatus and method of manufacture

Plastic encapsulated electrodynamic apparatus

D.C. PM motor with a stator core assembly formed of pressure shaped processed ferromagnetic particles

D.C. PM motor and generator with a stator core assembly formed of pressure shaped processed ferromagnetic particles

Vertical stator double gas D.C. PM motors

(unassigned)

Permanent magnet d.c. motor having a radially-disposed working flux gap

Permanent magnet D.C. motor having a radially-disposed working flux gap

CAMATEC CORP

D.C. motor with axially disposed working flux gap

D.C. motor

MUELLER & SMITH LPA

D.C. motor

PETERSEN CHRISTIAN C

Intrusion alarm control system

CEGG INC

Intrusion alarm control system

CEGA INC

Inertia switch for anti-intrusion sensing systems

PETERSEN TECH CORPORATION

Double/twin radial air gap permanent magnet brushless motor