Resources Contact Us Home
Derrick crane

Image Number 3 for United States Patent #7441670.

The invention relates to a derrick crane having a main boom and having a derrick boom which are connected to one another by a stay cable to guy the main boom, having an auxiliary tip adjoining the main boom and a stay cable for its guying. In accordance with the invention, the stay cable of the auxiliary tip engages at the auxiliary tip at the one end and at the stay cable of the main boom at the other end.

  Recently Added Patents
Passive charge cord release system for an electric vehicle
Control of protein activity using a conducting polymer
Liquid crystal shutter glasses
Drinking glass with ball embedded in base
Communication system including a switching section for switching a network route, controlling method and storage medium
Method for production of fermentable sugars from biomass
Cancer vaccines containing epitopes of oncofetal antigen
  Randomly Featured Patents
Fibrous protein materials
Process for making remote payments for the purchase of goods and/or a service through a mobile radiotelephone, and the corresponding system and mobile radiotelephone
Method of producing positive active material for non-aqueous electrolyte secondary batteries
Optical transmission system with group velocity dispersion compensation
Fluid separation and delivery apparatus and method
Method of refueling reactor
Method and apparatus for producing tires
Mixing head for machines for producing multicomponent plastics
Multi-function paper toweling dispenser
Process for the manufacture of a hollow turbomachine blade and apparatus for use in said process