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Valve with non-binding spool
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Patent number 4,270,731
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Issue date Jun 2, 1981
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Caterpillar Tractor Co.
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George J. Jackson
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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Nested bearing crank mechanism
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Patent number 4,183,267
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Issue date Jan 15, 1980
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Caterpillar Tractor Co.
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George J. Jackson
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Apparatus for deaerating fluids
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Patent number 3,972,342
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Issue date Aug 3, 1976
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Caterpillar Tractor Co.
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George James Jackson
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Apparatus for deaerating fluids
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Patent number 3,967,637
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Issue date Jul 6, 1976
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Caterpillar Tractor Co.
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George James Jackson
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL