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
Shot scent dispenser
Stable pharmaceutical composition and methods of using same
Method for treating rheumatoid arthritis by administering an anti-IL-6 antibody and methotrexate
Biometric data display system and method
Devices including composite thermal capacitors
Method and apparatus for determining the altitude of a mobile device
Image heating apparatus
  Randomly Featured Patents
Process for fabricating silica article involving joining of discrete bodies
Container, particularly for receiving foods
Vertical trench LDMOS transistor
Vehicle speed responsive variable torque transmitting assembly
Semiconductor device and manufacturing method thereof
Film metering apparatus and method with drive speed reduction
Compositions and methods for detection of Ehrlichia canis and Ehrlichia chaffeensis antibodies
Apparatus for calibrating the alignment of a wafer cassette holder to a robot blade
Automotive mounting bracket
Water decomposition method and device using ionization by collision