Resources Contact Us Home
Lifting device with counterweight

Image Number 3 for United States Patent #6109463.

A lifting device which includes a frame and an elongated boom having a lower end pivotally connected to the frame along a pivot axis. The lower end of the boom has a counterweight connected thereto offset from the pivot axis. The counterweight has a center of gravity which is movable with respect to the pivot axis of the boom. The counterweight can be freely pivotal, fixed, or partially fixed with respect to the boom. When linkage is provided between the counterweight and the boom, the counterweight can be rolled or tilted so as to move the counterweight center of gravity with respect to the pivot axis of the boom.

  Recently Added Patents
Bus controller for handling split transactions
Encryption using alternate authentication key
Fusion of road geometry model information gathered from disparate sources
Architecture for accelerated computer processing
Antibody recognizing turn structure in amyloid .beta.
Micromachined devices and fabricating the same
  Randomly Featured Patents
Multiple concurrent display system
Gel composition and adhesive stick
Camera device and method for taking photos
Loop current monitor circuitry and method for a communication system
Skin abrasion system and method
CVD reactor with RF-heated process chamber
Storm window bubble cover
Programmable fuse with silicon germanium
Multi-purpose pet utility vest