METHOD FOR DRYING ARTICLES HAVING A LOW HEAT TOLERANCE

• US 3,698,098 A
• Filed: 03/29/1971
• Issued: 10/17/1972
• Est. Priority Date: 03/29/1971
• Status: Expired due to Term

• Current Assignee: James M. Ramsay
• Original Assignee: James M. Ramsay
• Inventors: Ramsay, James M.
• Primary Examiner(s): Matteson, Frederick L.
• Assistant Examiner(s): Anderson, W. C.
• Application Number:
  US05/129,062
• Time in Patent Office: 568 Days
• Field of Search: 34/15,92,103,104
• US Class Current: 34/403
• CPC Class Codes: D06C 2700/09 Various apparatus for drying textiles
• CPC Class Codes: D06C 7/00 Heating or cooling textile fabrics

Abstract

A method for drying articles having a low heat tolerance, such as parachutes fabricated of synthetic fibers, comprising the steps of first heating a hermetically sealable chamber to a predetermined temperature which the article can tolerate, then evacuating the chamber to create a vacuum therein for substantially reducing the boiling-point of any moisture in the article, and exhausting the boiled-off moisture to complete the drying cycle.

Claims

1. A method of drying a parachute fabricated of synthetic fibers having a low heat tolerance comprising the steps of:

inserting the parachute in a chamber;

first heating the chamber to a predetermined temperature between 60* to 140* F. below which the article can tolerate;

evacuating said chamber to create a vacuum of between 27 inches Hg to 29.5 inches Hg therein for substantially reducing the boiling-point of any moisture in said article;

exhausting the boiled-off vapor from said chamber until the article is dry;

relieving the vacuum within the chamber to complete the drying cycle.

2. The method of claim 1 wherein the heating is achieved by external and internal means, the latter by folding the article within a flexible electric blanket positioned within the chamber.