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Title: Two speed axle assembly

Abstract

This patent describes a two speed axle assembly comprising an input sun gear, an output sun gear, a plant carrier mounted for rotation about the input and output sun gears, at least one compound planetary gear rotatably mounted on the planet carrier and drivingly connected to the input sun gear and the output sun gear, first clutch means for selectively locking the planet carrier relative to the input sun gear for rotation therewith including means normally loading the first clutch means whereby the planet carrier rotates the input sun gear, second clutch means for alternatively locking the planet carrier against rotation whereby the compound planet gear rotates on the planet carrier in response to rotation of the input sun gear, and inflatable bladder means adapted when selectively inflated to load the second clutch means and simultaneously unload the normally loaded first clutch means whereby the planet carrier is unlocked relative to the input sun gear and locked against rotation, including means selectively supplying hydraulic fluid under pressure to the bladder means, means supplying hydraulic fluid comprising accumulator means, pump means remote from the axle assembly for pressurizing the hydraulic fluid and maintaining a supply of the fluid under at leastmore » a minimum pressure in the accumulator means, and valve means for selectively admitting the pressurized fluid from the accumulator means to the bladder means to inflate the bladder means and relieving the pressure to deflate the bladder means.« less

Inventors:
; ;
Publication Date:
OSTI Identifier:
6672358
Patent Number(s):
US 4774857
Assignee:
Dana Corp., Toledo, OH NOV; NOV-89-033492; EDB-89-008081
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 5 Feb 1987
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; GEARS; DESIGN; VEHICLES; ANGULAR VELOCITY; HYDRAULIC ACCUMULATORS; HYDRAULICS; PRESSURIZING; PUMPS; SHAFTS; VALVES; WHEELS; ACCUMULATORS; CONTAINERS; CONTROL EQUIPMENT; EQUIPMENT; FLOW REGULATORS; FLUID MECHANICS; MACHINE PARTS; MECHANICAL ENERGY STORAGE EQUIPMENT; MECHANICS; TANKS; VELOCITY 330600* -- Advanced Propulsion Systems-- Vehicle Design Factors

Citation Formats

Heine, C.F., Krisher, J.A., and Pifer, R.L.. Two speed axle assembly. United States: N. p., 1988. Web.
Heine, C.F., Krisher, J.A., & Pifer, R.L.. Two speed axle assembly. United States.
Heine, C.F., Krisher, J.A., and Pifer, R.L.. 1988. "Two speed axle assembly". United States. doi:.
@article{osti_6672358,
title = {Two speed axle assembly},
author = {Heine, C.F. and Krisher, J.A. and Pifer, R.L.},
abstractNote = {This patent describes a two speed axle assembly comprising an input sun gear, an output sun gear, a plant carrier mounted for rotation about the input and output sun gears, at least one compound planetary gear rotatably mounted on the planet carrier and drivingly connected to the input sun gear and the output sun gear, first clutch means for selectively locking the planet carrier relative to the input sun gear for rotation therewith including means normally loading the first clutch means whereby the planet carrier rotates the input sun gear, second clutch means for alternatively locking the planet carrier against rotation whereby the compound planet gear rotates on the planet carrier in response to rotation of the input sun gear, and inflatable bladder means adapted when selectively inflated to load the second clutch means and simultaneously unload the normally loaded first clutch means whereby the planet carrier is unlocked relative to the input sun gear and locked against rotation, including means selectively supplying hydraulic fluid under pressure to the bladder means, means supplying hydraulic fluid comprising accumulator means, pump means remote from the axle assembly for pressurizing the hydraulic fluid and maintaining a supply of the fluid under at least a minimum pressure in the accumulator means, and valve means for selectively admitting the pressurized fluid from the accumulator means to the bladder means to inflate the bladder means and relieving the pressure to deflate the bladder means.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1988,
month =
}
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