| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Apparatus for handling and cooling foundry sand | US3627024D | 1969-07-07 | US3627024A | 1971-12-14 | SCHUMACHER JOSEPH S |
| Apparatus for handling and cooling foundry sand. No apparatus that uses air or water to cool the sand is used. Instead, conventional equipment including a muller, conveyors, storage tanks, a molding machine, a shakeout machine, a new sand dividing device, and a new sand-metering device, are employed.
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| 82 | Method and means for changing the temperature of granular material by gas jets | US42831565 | 1965-01-27 | US3304619A | 1967-02-21 | FUTER RUDOLPH E |
| 83 | Base and trim water proportioning system and method | US28161463 | 1963-05-20 | US3230589A | 1966-01-25 | MCILVAINE ROBERT L |
| 84 | Apparatus for heating foundry sand or similar granular material | US25545563 | 1963-02-01 | US3144244A | 1964-08-11 | HUNTER WILLIAM A |
| 85 | Moldability controller | US13290161 | 1961-08-21 | US3143777A | 1964-08-11 | DIETERT HARRY W |
| 86 | Moisture control apparatus for use with a two-stage continuous mixer | US2543860 | 1960-04-28 | US3109210A | 1963-11-05 | JAMESON HOWARD L |
| 87 | Apparatus for electrical moisture measurement | US4806560 | 1960-08-08 | US3090091A | 1963-05-21 | DIETERT HARRY W; DIETERT RANDOLPH L; GRAHAM ALEXANDER L; KABEL MILTON R |
| 88 | Moisture probe | US83861559 | 1959-09-08 | US3047801A | 1962-07-31 | DIETERT RANDOLPH L |
| 89 | Method and apparatus for weather responsive moisture compensation | US86074959 | 1959-12-21 | US3046624A | 1962-07-31 | DIETERT HARRY W; DIETERT RANDOLPH L |
| 90 | Apparatus for cooling granular material | US68434357 | 1957-09-16 | US2990624A | 1961-07-04 | GRANATH AXEL G; MCILVAINE ROBERT L |
| 91 | Sand controller | US30129452 | 1952-07-28 | US2791120A | 1957-05-07 | DIETERT HARRY W; DIETERT RANDOLPH L; STEINMUELLER RALPH E |
| 92 | Device for cooling casting sand | US32802952 | 1952-12-26 | US2683938A | 1954-07-20 | GORAN GUSTAVSSON KARL AXEL |
| 93 | Method of cooling and conveying material | US76730347 | 1947-08-07 | US2607199A | 1952-08-19 | CHRISTENSEN ALFRED C |
| 94 | Foundry sand cooler | US12853949 | 1949-11-21 | US2602242A | 1952-07-08 | HARRY DOK |
| 95 | Method of reclaiming sand | US9447249 | 1949-05-20 | US2553318A | 1951-05-15 | WALTER HORTH |
| 96 | Sand recovery apparatus | US66675646 | 1946-05-02 | US2530651A | 1950-11-21 | CHRISTENSEN ALFRED C |
| 97 | Temper control for molding sand | US77011847 | 1947-08-22 | US2508540A | 1950-05-23 | RIGGEN THEODORE K |
| 98 | Combined sand elevator and drier | US46217042 | 1942-10-15 | US2388399A | 1945-11-06 | GEORGE FORSTER JOHN; PLANT LELAND G |
| 99 | Apparatus for cooling sand mullers | US45830242 | 1942-09-14 | US2314486A | 1943-03-23 | DVORAK JAMES J |
| 100 | Washing of sand, gravel, and the like | US39945541 | 1941-06-24 | US2286979A | 1942-06-16 | OSWALD SAMUEL JOHN |
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