Resources Contact Us Home
Crane backstay spreader

Image Number 4 for United States Patent #8127949.

A backstay spreader attachable between a pair of backstay sections on a crane includes first and second members each having a backstay section connector at a first end and a pivoting joint connector at a second end, the pivoting joint connectors being used to hold the first and second members together with a pivotal connection and each having an extending portion extending away from the pivotal connection, with an angle between the extending portions. The backstay spreader also includes an actuator mounted between the pivoting joint connectors. The actuator controls the angle between the extending portions of the two pivoting joint connectors, which defines an angle between the first and second members. When the actuator forces the two extending portions towards each other, the first and second members pivot around the pivotal connection to force the first and second backstay sections further apart from one another, and when the actuator allows the two extending portions to pivot away from each other, the first and second members pivot towards each other, allowing the backstay sections to come closer together.

  Recently Added Patents
Apparatus and method of preventing signal delay in display device
Semiconductor power amplifier
Light receiving element with offset absorbing layer
Semiconductor apparatus
Supplier capability methods, systems, and apparatuses for extended commerce
Anti-slip strip for vehicle running boards
Progressively discovering and integrating services
  Randomly Featured Patents
Methods of forming electrically insulative materials, methods of forming low k dielectric regions, and methods of forming semiconductor constructions
Joint design for welding plastic assemblies
Receiver having a frequency synthesizing circuit
Electrophotographic elements containing polyamide interlayers
Microemulsion cleaning compositions
Weighted absolute difference based deinterlace method and apparatus
Process for preparing 6-chloro-2-chloromethyl-4-phenylquinazoline-3-oxide and intermediates therefor
Combined pressure wave suppressor air/vapor purge and check valve
Boom box-shaped on-premises electronic pager
Zeolite L preparation