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Patent Searching and Data


Title:
HYBRID DRIVE TRAIN FOR SELF PROPELLED POWER TROWEL
Document Type and Number:
WIPO Patent Application WO/2018/231881
Kind Code:
A3
Abstract:
A hybrid drive train for a self propelled power trowel includes a frame having a centerline from front to rear, an engine-generator set, a pair of rotors with trowel blades tiltably connected to the frame and positioned to support the frame above a concrete surface being finished, electric motors for driving the rotors, means for tilting each rotor toward and away from the centerline, and means for tilting a rotor fore and aft, parallel to the centerline. A rectifier and inverter in series at the engine-generator output allows engine speed to be regulated by a capacitor bank, and usage of highly efficient brushless AC synchronous motors to drive the rotors. A rechargeable battery may be connected in parallel with the capacitor bank.

Inventors:
DEL REAL, Erick M. (6010 N. Peppard Avenue, Meridian, Idaho, 83646, US)
CHAPPLE, Larry Jake (3026 E. Shadowwolf Drive, Eagle, Idaho, 83616, US)
BATEMAN, Nathaniel Cody (4359 S. Choctaw, Boise, Idaho, 83709, US)
DAVIS, Jeffrey Kevin (3383 W. Whitman Drive, Boise, Idaho, 83716, US)
Application Number:
US2018/037173
Publication Date:
January 24, 2019
Filing Date:
June 12, 2018
Export Citation:
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Assignee:
MULTIQUIP, INC. (P.O. Box 6254, Carson City, California, 90749, US)
International Classes:
E01C19/22; B60L50/13; E04F21/24; E04G21/10
Foreign References:
US7232277B22007-06-19
US6320350B12001-11-20
US20030068200A12003-04-10
US6846127B12005-01-25
US20140239921A12014-08-28
US5334899A1994-08-02
US20130129419A12013-05-23
US20040022581A12004-02-05
US3367250A1968-02-06
Attorney, Agent or Firm:
BURDICK, Sean D. (2526 W. State Street, Boise, Idaho, 83702, US)
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