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Sealed-air-dryer-with-turbosaver-valve

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Sealed air dryer with turbosaver valve

Details

Inventors: Sloka, Alan;
Assignee: Midland Brake, Inc. (Kansas City, MO)
Primary Examiner: Miles; Tim
Assistant Examiner:
Attorney, Agent or Firm: Leydig, Voit & Mayer, Ltd.

An air dryer is provided which permits the purge air to bypass the coalescing filter during the unloading cycle in order to minimize the back pressure in the desiccant filter, decrease the purge time of the dryer, and increase the efficiency of the air dryer. In one embodiment, the air dryer may have a passage disposed between the coalescing filter and the desiccant filter so as to permit purge air to bypass the coalescing filter during the unloading cycle. A turbosaver valve may also be disposed so that it controls not only the flow of air through the coalescing filter but also the discharge of the purge air and the contaminants. Disposing the turbosaver valve intermediate the upstream and downstream sides of the coalescing filter insures that the turbosaver valve passes the compressed air through the coalescing filter in the loading mode while permitting the purge air to by-pass the coalescing filter in the unloading mode. In another aspect of the invention, the air dryer is provided which has a tamper resistant connecting member for sealably connecting the upper and lower housings so that the dryer cannot be improvidently disassembled.

DETAILED DESCRIPTION It is an object of this invention to provide an air dryer which prevents the loss of power and efficiency of the vehicle engine due to the operation of the braking system.
It is another object of this invention to provide an air dryer which prevents the loss of turbocharged boost through the air dryer during the unloading cycle.
It is another object of this invention to provide an air dryer having an internal turbosaver valve which directly seals the air intake port of the air dryer.
It is another object of this invention is to provide an air dryer having a turbosaver valve which is separate from the purge valve.
It is another object of this invention to provide an air valve dryer having a turbosaver which permits draining of the sump while preventing the loss of turbocharged boost.
It is another object of this invention to provide an air dryer having a turbosaver valve which controls the passage of air through the coalescing filter.
It is another object of this invention is to provide an air dryer having a turbosaver valve which prevents the intake air from passing downstream of the coalescing filter, thereby decreasing the chance of contaminants fouling the desiccant filter.
It is a still another object of this invention to provide an air dryer having a turbosaver valve which permits the purge air to bypass the coalescing filter in the unloading mode, thereby decreasing the back pressure in the desiccant filter.
It is a further object of the present invention to provide a tamper-resistant air dryer.
It is a still further object of the present invention to provide an air dryer which is relatively difficult to disassemble in the field but which is readily assembled in the manufacturing process.
In accordance with one of these objects, a novel and unique sealed air dryer and turbosaver valve is provided which prevents the supercharged air from the engine from being discharged through the air dryer.
The novel and unique air dryer has an upper housing and lower housing

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