Powered locomotive parking brake
OwnerRichard H. Fox, David M. Steinbacher +3inventors
InventorsRichard H. Fox, David M. Steinbacher, Wesley L. Olin, Vernon O. Meyers, William J. Zimmerle
Life of this patent
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Abstract
A power-actuated parking brake is provided that produces sufficient force to set a parking brake for a locomotive. A powered drive train rotates a sheave over which a brake chain is positioned. Rotation of the sheave draws up the brake chain that is connected at one end to the parking brake. The parking brake is set when sufficient tension is applied to the brake chain by the powered drive. The drive train includes a drive shaft driven by an electric motor and connected to the sheave through a planetary reduction drive and a clutch.
Claims13
A safety brake for a locomotive, comprising:
- a force transmitting device connected to a brake mechanism associated with at least one wheel of a locomotive, an actuating mechanism operably connected to the force transmitting member and a powered drive for driving the actuating mechanism to apply a force to the brake mechanism, wherein the powered drive includes a motor, a planetary reduction drive for providing sufficient force to set the brake, and a clutch, the powered drive being constructed and arranged so that the motor operably drives the actuating mechanism through the planetary reduction drive and the clutch such that the clutch slips when sufficient force has been applied to the brake through the force transmitting member to set the brake, further comprising a manual drive for driving the actuating mechanism, the manual drive being located between the powered drive and the actuating mechanism, the manual drive having a first condition in which the manual drive operates the actuating mechanism and a second condition in which the manual drive does not operate the actuating mechanism, wherein only the powered drive operates the actuating mechanism when the manual drive is in the second condition.
A brake mechanism for a locomotive having both a powered drive and a manual drive, comprising;
- a motor that rotates a drive shaft through a clutch, the drive shaft being in operative engagement with a rotatable actuating mechanism that supports a force transmitting device to set and release a brake mechanism associated with at least one wheel of the locomotive, a ratchet handle coupled to the drive shaft, wherein the drive shaft can by rotated either by the motor through the clutch or by the ratchet handle to cause the force transmitting device to apply and release the brake.
Dependencies are inferred from the claim text.