F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
F15B 13/044 (2006.01) A01C 7/10 (2006.01) A01C 19/02 (2006.01) F15B 9/12 (2006.01) F15B 9/14 (2006.01) G01F 11/24 (2006.01)
Patent
CA 2221403
The invention relates to a hydraulically operated variable rate rotational drive. A rotational drive rate is provided to a hydraulic motor by rotational input from an electric motor at a controlled rate. The electric motor rotates a rotary valve which opens the hydraulic connection to the hydraulic power source. Hydraulic fluid rotates the motor closing the hydraulic connection until the next rotation from the electric motor. This drive incorporates a torque generator, commonly available as used for incremental rotational drive such as power steering. Continuous hydraulic rotational drive from the motor accordingly matches the continuous input rate from the electric motor. The drive is particularly suited for controlling metering rates of rotational meters without the need for gearing. The rate is advantageously variable while in operation, saving significant time in metered seeding or fertilizing operations.
Memory Russell James
Wilson Cameron A.
Flexi-Coil Limited
Gowling Lafleur Henderson Llp
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