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
Lacrosse head
Servo write assembly
Two dimensional magnetic sensor immune to skew angle misalignment
Image forming apparatus and information processing apparatus
Method and apparatus for decoding/encoding a video signal with inter-view reference picture list construction
Buckle (tube)
Lipoprotein analysis by differential charged-particle mobility
  Randomly Featured Patents
Process for metals recovery from spent catalyst
Benzazecine derivatives for cognitive and memory functions
Persistent current switch for high energy superconductive solenoids
Electronic musical instrument including at least two tone-generation assigners
Opened model 5000 thermostat
Bagel slicer
Mirror or the like
Gum treating method and device
Transducer system for acoustic instruments
Office furniture