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
RFID device using single antenna for multiple resonant frequency ranges
Information storage medium, reproducing method, and recording method
Lens system
Fixing apparatus
Process for the production of an acylation catalyst
Systems and methods for providing a video playlist
  Randomly Featured Patents
Method and system for personalized digital game creation
Artificial bone and method for producing the same
Folded beam structure utilization methods and apparatus
Job auditing systems and methods for direct imaging of documents
Paper pulp beater
Manually controlled, gas-operated tool having a real-time clock
Paper packer and file
Engine welder with shielding gas generation
Faucet assembly
Shoe outsole