Inventor

HERR JOHN A

US25 patents

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

HERR JOHN A

SINGER CO

Brush board assembly for dynamoelectric machine

Brush board assembly for dynamoelectric machine with flat end commutator

Method of and apparatus for cooling electric motors and totally enclosed electric motors incorporating same

Latching relay using Hall effect device

Multi-level armature winding for single air gap motor

Brushless direct current motor and control therefor

Electro-magnetic thread tension control for sewing machines

Annular segment permanent magnet single air gap electric motor

Multiple armature permanent magnet motor/actuator for sewing machine drive and stitch control

Hall generator position sensing device

Sewing machine motor speed limiting by pattern selection

Integrated motor controller for sewing machines

Direct drive feed system for sewing machines

Bight stop mechanism for sewing machines

Sewing machine bobbin thread run-out alarm using reflected light

High density programming means for programmable sewing machine

Balanced armature winding for motors

Position sensing device for electronic sewing machine

Diaphragm pump for needle threading

Diaphragm pump for needle threading

Magnetic actuated sewing machine zigzag mechanism

APPLIED BOLTING TECHNOLOGY PRO

Direct multi-tension indicating washer having bumps of a first and second height

Direct tension indicating washers

Direct tension indicating washers

Direct tension indicating washers