Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Autonomous downlink code selection for femto cells
Family of pain producing substances and methods to produce novel analgesic drugs
System and method for oscillator frequency control
Methods and apparatus for monitoring communication through identification of priority-ranked keywords
Display device substrate, method for manufacturing the same, display device, method for forming multi-layer wiring, and multi-layer wiring substrate
Image forming device
Defect inspection method and device therefor
  Randomly Featured Patents
Selectively usable roller striper for lawn mower
Tray for plants
Individually matched set of club shafts and a method for manufacturing an individually matched set of club shafts
Broom holder
Synchronous circuit controller for controlling data transmission between asynchrous circuit
Projection exposure mask acceptance decision system, projection exposure mask acceptance decision method, method for manufacturing semiconductor device, and computer program project
Sonic method and apparatus for augmenting fluid flow from fluid-bearing strata employing sonic fracturing of such strata
Method to remove residue of metal etch
Remote storage disk control device with function to transfer commands to remote storage devices
Disc apparatus