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
Method and system for blocking hazardous information
Lighting fixture
High frequency vertical spring probe
Maize variety hybrid X03A157
Fuel-based injection control
Systems and methods for computer-aided fold detection
Collaborative system for capture and reuse of software application knowledge and a method of realizing same
  Randomly Featured Patents
Substrate processing apparatus
Substrate, in particular glass substrate, supporting a photocatalytic layer coated with a protective thin layer
Harbor sign for boat berth
Method for analyzing skin surface and apparatus therefor
Instant-win lottery game and ticket
Antenna device comprising feeding means and a hand-held radio communication device for such antenna device
Double impatiens plant named `Cameo Scarlet`
Folding stroller actuating system
Buffer circuit
Low voltage single poly deep sub-micron flash eeprom