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:
May. 09, 1995
Filed:
Sep. 09, 1993
Joel T Aragon, Everett, WA (US);
Intermec Corporation, Everett, WA (US);
Abstract
A multi-compartment outer housing, positioned in an ambient fluid having an ambient pressure P, has a compressor developed fluid flow through the outer housing compartments. A multi-chamber inner housing is positioned in a housing compartment having a fluid pressure greater than the ambient pressure P. This inner housing has a sealed equipment chamber, a still-fluid chamber, and an optically transparent wall between the equipment and still-fluid chambers. The still-fluid chamber has a restricted port at its distal or lee end which places the still-fluid chamber in fluid communication with the housing compartment. The inner housing is oriented relative to a fluid egress port in this housing compartment so that the optically transparent wall, the equipment chamber and the fluid egress port are placed in a line-of-sight alignment through the restricted port of the still-fluid chamber. This orientation of the inner housing further minimizes solid particle build up within the still-fluid chamber, and an electrostatic charge build up on the optically transparent wall.