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
Multi-band dipole antenna
Diazeniumdiolated phosphorylcholine polymers for nitric oxide release
Image correction method
Consistent retention and disposition of managed content and associated metadata
Social network user data advertising
Laser processing a multi-device panel
Methods and systems for automated backups and recovery on multi-os platforms using controller-based snapshots
  Randomly Featured Patents
Quinolone derivatives and their use in a method of controlling an immediate hypersensitivity disease
Apparatus and method for detecting multiple hits in CAM arrays
Method and device for synchronous mapping of the total refraction non-homogeneity of the eye and its refractive components
Apparatus and method for acceleratively activating fuel cell
Driver side air bag with particulate diverter
Method of manufacturing vitreous carbon
Methods for combined PCR amplification and hybridization probing using doubly labeled fluorescent probes
Container for laser-readable discs with closure means
Chemical solutions methods for processing semiconductor materials
Method for manufacturing a heat insulating shaped bar