The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 1994
Filed:
May. 04, 1993
Applicant:
Inventors:
David J Goodell, Lorain, OH (US);
James P Koenig, Olmsted Twp., Lorain County, OH (US);
Assignee:
Allied-Signal Inc., Morristown, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
96113 ; 96144 ; 96147 ; 96152 ;
Abstract
An air dryer for compressed air braking systems includes a desiccant canister which is provided with a double helix insert which cooperates with the walls of the canister to define a pair of intertwined, serpentine, pneumatically isolated flow paths. The flow paths extend through the canister between the end walls and are filled with a desiccant material. A single center line valve mechanism is provided to switch between the flow paths so that one of the flow paths is purged at the same time that the other flow path is pressurized.