Two speed engine accessory drive with plastic planet gears

Details Two speed engine accessory drive with plastic planet gears Two speed engine accessory drive with plastic planet gears

1991-11-08

1992-08-18

Bonck, Rodney H.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Carrier braked

475311, 475312, 475323, F16H 344

Patent

active

051394685

ABSTRACT:
A two speed engine accessory drive including a gear case 12 and an input shaft 26 rotatable about an axis that is concentric with the central gear case axis 54. The input shaft 26 carries a drive sun gear 38. A driven sun gear 78 is positioned adjacent to the drive sun gear and is attached to an accessory drive shaft 91 that is rotatable about an axis that is concentric with the central gear case axis 54. A compound planet gear 66 is supported by a planet gear carrier 52 that is rotatable about the central gear case axis 54. The compound planet gear 66 includes a rigid insert 70, a first plastic planet gear 76 secured to the insert and in mesh with the drive sun gear 38, and a second plastic planet gear 76 secured to the insert and in mesh with the driven sun gear 78. A brake band 98 is operable to allow or prevent rotation of the planet gear carrier 52. A one way clutch is mounted in the planet gear carrier 52 and is operable to limit rotation between the planet gear carrier 52 and an accessory drive shaft 91 when the planet carrier is allowed to rotate relative to the gear case.

REFERENCES:
patent: 1494503 (1924-05-01), Rackham
patent: 2360711 (1944-10-01), Orr
patent: 2751788 (1956-06-01), Forrest
patent: 4862770 (1989-09-01), Smith
patent: 5011464 (1991-04-01), White

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