Original patent in English and French

1982 Maillard freewheel brochure

Sachs Maillard New Succes hubs datasheet

Sachs Maillard Diabolo hubs datasheet

Sachs Maillard ARIS freewheels datasheet

News article (source unknown)

Helicomatic fact sheet that came with a 1984 Peugeot

Officially named spoke protector, unofficially: 'pie plate' and to those who detest them: 'dorc disc'. But whatever you call them an essential must-have to really flaunt your Helicomatic affiliation.