GEARBOX ISOLATOR

摘要

A gearbox isolator (10) is provided to allow the gas within a gearbox cavity (50) to expand and contract in a manner that prevents the ingestion of airborne contaminants such as moisture and particulate matter. The gearbox isolator utilizes a breather bladder (22), a check valve (36) for venting gas to the atmosphere when the breather bladder is filled to capacity, and a desiccant filter (32) to provide make-up air to the gearbox when the breather bladder is empty. The desiccant filter is provided in a sealed canister (34) having a check valve (38) allowing atmospheric gas into the sealed canister when needed.

主权项

1. A gearbox isolator device adapted to be used with a gearbox, the gearbox isolator device comprising:
a breather bladder fluidly connected to a gearbox and adapted to store and return gas from the gearbox; a reservoir assembly fluidly connected to the gearbox comprising a desiccant filter positioned in a reservoir gas canister, the reservoir gas canister including vacuum check valve, the reservoir assembly adapted to provide make-up air to the gearbox filtered by the desiccant filter from atmosphere; a pressure check valve fluidly connected to the gearbox and adapted to allow gas from the gearbox to vent to atmosphere when the breather bladder cannot take in additional air; and a connector tee which defines (a) a first fluid passageway between the gearbox and the bladder, (b) a second fluid passageway between the gearbox and the reservoir assembly, and (c) a third fluid passageway between the gearbox and the pressure check valve, in which the third fluid passageway does not include the reservoir assembly.