Resources Contact Us Home
Hydraulically actuated tool for mechanically splitting rock-like material

Image Number 3 for United States Patent #4114951.

A rock splitter tool is hydraulically actuated by a piston which moves a tapered wedge between feathers mounted at one end in a retaining means. The feathers and wedge, as an assembly, are inserted into a predrilled hole and the wedge is driven forward by the hydraulic piston to move the feathers outwardly to split the rock. The present invention is directed toward providing a hydraulically moved wedge in which the feathers and wear plate portions are retained by a clam shell clamp and retainer which are readily separated and removed to enable an inspection and/or replacement of any damaged apparatus. This clam shell clamp enables existing apparatus to be converted. Auxiliary apparatus utilizing a jack hammer device is also shown as is a hydraulic pulsation developing rotary valve which is adapted to cycle the wedge as it is moved forwardly.

  Recently Added Patents
Calcium carbonate granulation
Matching a usage history to a new cloud
Method and system for weighted fair queuing
Soybean cultivar CL1013663
Method and a channel estimating arrangement for performing channel estimation
Data driver and liquid crystal display device using the same
Non-volatile memory cell containing a nano-rail electrode
  Randomly Featured Patents
Narrow band radiation filter films
Information system, data transfer method and data protection method
Removable needle attachment having a detachable needle
Recombinant plant expressing non-competitively binding BT insecticidal crystal proteins
Sewage ventilating basin
Heating plate with planar heater zones for semiconductor processing
Image-wide matting
Drive unit and manufacturing method thereof
Opthalmological apparatus
Driving circuit for display device and liquid crystal display device