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:
Jul. 02, 1991
Filed:
Oct. 27, 1989
Layton A Wise, Washington, PA (US);
David G Aaron, Monroeville, PA (US);
Mine Safety Appliances Company, Pittsburgh, PA (US);
Abstract
A protective garment or suit made of fluid impermeable material for use by workers in toxic and hostile environments having an air cooling deivce that divides air from a single airline supply into two separate fractions, one to provide respiratory air at the proper volume and pressure to a breathing mask and the other to provide cooling air at the proper volume and pressure to the inside of the suit to cool the body of the worker. The cooling device permits the delivery of different volumes of cooling air and respiratory air at the appropriate pressure. Further, the volumetric flow of respiratory air to the breathing mask can be adjusted by the worker while preventing it from being reduced below a predetermined safe minimum volumetric flow.