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 apparatus for managing backup channel in multi-channel environment
Vending machine
Data processing system, data processing method, and image forming apparatus
Methods and systems to reduce a number of simulations in a timing analysis
Rechargeable battery
Display apparatus having a semi-penetration layer and a sealing unit
Therapeutic compositions and methods
  Randomly Featured Patents
Float adapted to track an interface between two liquids of differing density
Device for injecting preheated air into a shaft furnace
Golf card protective visual aid
Method for separating suspended solids from a waste fluid
Solid electrolytic capacitor
Integral bump technology sense resistor
Method of making conformal fluid data sensor
Self-extruded bushing assembly and method of making the same
Isocyanurate ring-containing crosslinked polyurethane polyurea particulate polymer and process for producing the same
Sifting screens