4. Metal working
  5. Method of mechanical manufacture
  6. Impeller making

David John Grubish

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Collapsible and relatively rotatable drive shaft

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Coupling facilitates relative axial motion between coupled...
Patent

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Method of aligning electrode in multiple-axis EDM drilling

Electric heating – Metal heating – Cutting or disintegrating
Reexamination Certificate

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Method of drilling dovetail pins

Electric heating – Metal heating – Cutting or disintegrating
Reexamination Certificate

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Single position turbine rotor repair method

Metal working – Method of mechanical manufacture – Impeller making
Patent

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Profile ID: LFUS-PAI-P-186762

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