4. Machine element or mechanism
  5. Gearing
  6. Toothed gear and recirculated unconnected elements

Wilhelm E. Altrogge

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Door mounted operating mechanism for an overhead door

Movable or removable closures – Up-and-over type; e.g. – moves from vertical to withdrawn... – With operator
Patent

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Friction gear

Machine element or mechanism – Gearing – Toothed gear and recirculated unconnected elements
Patent

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Profile ID: LFUS-PAI-P-1575684

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