Abrading – Machine – Sandblast
Patent
1993-01-11
1995-05-02
Rose, Robert A.
Abrading
Machine
Sandblast
451 3, 74 25, 74567, B24C 306
Patent
active
054114322
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND
This invention relates to liquid jet cutting systems. More particularly it relates to high pressure water jet cutting systems adapted for cutting granite stones on-site at quarries.
TECHNICAL CHARACTER
The technical character of this invention resides in a balanced oscillator with rise and fall and means for adjusting the balance, a computer interface and a nozzle with sapphire, diamond or like substance on the orifice thereof.
PRIOR ART
A prior art search was conducted and the following pertinent U.S. prior art patents were uncovered arranged in reverse chronological order.
a) U.S. Pat. No. 4,872,293 issued to Yasukawa et al on Oct. 10, 1989 for "Abrasive Water Jet Cutting System"
b) U.S. Pat. No. 4,870,336 issued to Ellery Nickerson on Sep. 26, 1989 for "Water Jet Trim Head Simulator"
c) U.S. Pat. No. 4,836,613 issued to Roger Adam on Jun. 6, 1989 for "Cutterhead for Water Jet Assisted Cutting"
d) U.S. Pat. No. 4,698,939 issued to Mohammed Hashish on Oct. 13, 1987 for "Two Stage Waterjet Abrasive Jet Catcher"
e) U.S. Pat. No. 4,624,326 issued to Charles Loegel Jr. on Nov. 25, 1986 for "Process and Apparatus for cutting Rock"
f) U.S. Pat. No. 4,573,382 issued to Kloehn et al on Mar. 4, 1986 for "Apparatus and Method for Cutting a Web"
g) U.S. Pat. No. 4,435,902 issued to Mercer et al on Mar. 13, 1984 for "Articulated Boom Water Jet Cutting Apparatus"
h) U.S. Pat. No. 4,369,850 issued to Clark Barker on Jan. 25, 1983 for "High Pressure Fluid Jet Cutting and Drilling Apparatus"
i) U.S. Pat. No. 4,367,902 issued to Schwartling et al on Jan. 11, 1983 for "Tool for Hydromechanical or Hydraulic Mining or for Cutting Mineral or Bituminous Materials"
j) U.S. Pat. No. 4,176,883 issued to Daniel Liesveld on Dec. 4, 1979 for "Oscillating Liquid Jet System and Method for Cutting Granite and the Like"
k) U.S. Pat. No. 4,111,490 also issued to Daniel Liesveld on Sep. 5, 1978 for "Method and Apparatus for Channel Cutting of Hard Materials Using High Velocity Fluid Jets"
l) U.S. Pat. No. 4,018,623 issued to John Walker on Apr. 19, 1977 for "Method of Cutting Using A High Pressure Water Jet"
Prior art fluid jet cutting systems with an oscillator have either an unequal dwell time at each end there by rendering an uneven cut on each side or an equal dwell time at very slow speeds. Some prior art systems compensate for unequal dwell time with spring tension in a small diameter tubing which limits their application to low horse power (Q*P*N) systems where Q=Flow P=Pressure and N=a constant or a factor. Accordingly low horse power prior art systems have limited production per square feet.
Prior art systems are also limited in the length of the tubing feeding the nozzle such that they are unable to accommodate cuts of several feet in depth. Furthermore none of the prior art patents achieve the objectives neither individually nor collectively.
OBJECTIVES
1) It is an objective of this invention to provide an oscillator which has equal travel and dwell time at each end of the center, thereby providing and even cut on both faces of the item being cut.
2) Another objective of this invention is to provide a programmable interface such that the system can be reprogrammed for varied applications readily.
3) Another objective of this invention is to include a diamond sapphire or the like substance at the orifice of the nozzle.
4) Another objective of this invention is to provide multiple water jet Cutting nozzles driven and powered by the same power unit on the same crawler to increase the cut rate efficiency and cost effectiveness on-site at a quarry.
5) Another objective of this invention is to provide an environmentally friendly system.
6) Another objective of this invention is to provide a safer, quicker method of cutting stone on site at a quarry.
7) Another objective of this invention is to provide a system that is reliable and easy to maintain. intuitive and easy to use such that it requires little training or retraining. the high pressure tubing without breaking any fittings. the pitch, the rise and fall spe
REFERENCES:
patent: 2476716 (1949-07-01), Fields
patent: 2998787 (1961-09-01), Pollmeier
patent: 4036437 (1977-07-01), Dreher
patent: 4309850 (1982-01-01), Benson
patent: 4367902 (1983-01-01), Schwarting et al.
Peterson Matthew
Wyatt Peter
Asija S. Pal
Rose Robert A.
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