All Patents of Type: electrical discharge machining |
Patents 1 -
15
of 19
|
Number | Date | Patentee | Title | Type |
416,873 | Dec. 10, 1889 | B.C. Tilghman | Cutting Metals by Electricity | electrical discharge machining |
455,186 | Jun. 30, 1891 | A.S. Elmore | Apparatus for Loosening Tubes From Mandrels | electrical discharge machining |
501,547 | Jul. 18, 1893 | E. Thomson | Shaping and Spinning Metals by Electricity | electrical discharge machining |
2,773,968 | Dec. 11, 1956 | J.W. Evans, M.E. Martellotti | Electro Discharge Machine | electrical discharge machining |
2,778,925 | Jan. 22, 1957 | H. Gill, J.G. Gross | Electrical Discharge Cutting Machine | electrical discharge machining |
2,807,706 | Sep. 24, 1957 | J.J. Oezer | Apparatus for Automatic Control of Electrical Discharge Machine | electrical discharge machining |
3,168,638 | Feb. 02, 1965 | M.J. Riddles | Method of Electro-Discharge Machining and Fluids for Use Therin | electrical discharge machining |
3,170,735 | Feb. 23, 1965 | H.H. Coffin | Insulated die set | tool and die maker |
3,195,374 | Jul. 20, 1965 | H.H. Coffin | Method of making an electrically insulated joint | tool and die maker |
3,206,639 | Sep. 14, 1965 | R.L. Henry | Electrical Discharge Machining Apparatus | electrical discharge machining |
3,286,127 | Nov. 15, 1966 | R.L. Henry | Electric Discharge Machining Apparatus with Current Control Means | electrical discharge machining |
3,334,210 | Aug. 01, 1967 | J.L. Williams, M.J. Riddles | Electro-Discharge Machining Fluid and Method | electrical discharge machining |
3,443,153 | May 06, 1969 | P.E. Berghausen | E. D. M. Power Supply with Current Adjusting Circuitry Responsive to Gap Condition | electrical discharge machining |
3,463,896 | Aug. 26, 1969 | R.L. Henry | Electro-Discharge Machining Apparatus | electrical discharge machining |
3,474,216 | Oct. 21, 1969 | J.M. Morgan, Jr. | Process Efficiency Detecting Circuit for Electrical Discharge Machining Apparatus | electrical discharge machining |