4. Traversing hoists
  5. Having random condition sensor combined with an indicator or...
  6. Means determining overloading produced by load

Edwin L. Vollmer

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Hydraulic boom compensation system for aerial devices

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Leveling system for aerial platforms

Fire escape – ladder – or scaffold – Means maintaining platform level on angularly movable support – Swingable support
Patent

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Load measuring apparatus for aerial booms and jibs

Traversing hoists – Having random condition sensor combined with an indicator or... – Means determining overloading produced by load
Patent

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Profile ID: LFUS-PAI-P-574448

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