DAVID JAMES ANDREWS IV
Pilots at Dodd Blvd, Lakeville, MN
License number
Minnesota A4628380
Issued Date
Apr 2015
Expiration Date
Apr 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
12055 Dodd Blvd, Lakeville, MN 55068
Professional information
Hard Disk Drive Filter
US Patent:
6270609, Aug 7, 2001
Filed:
Jan 11, 1999
Appl. No.:
9/228430
Inventors:
Craig G. Markell - White Bear Twp. MN
David J. Andrews - Rosemount MN
David J. Andrews - Rosemount MN
Assignee:
3M Innovative Properties Company - St. Paul MN
International Classification:
B29C 5336
US Classification:
156218
Abstract:
There is provided a method of forming a shaped sorbent filter preferably having a three dimensional shape.
The method generally entails:
a) providing porous flexible tubular web structure having two open ends;
b) sealing a first end of the tubular web structure;
c) filling the sealed tubular web structure with flowable filter material of sorbent material and binder;
d) sealing the opposite open end of the tubular web material; and
e) heating the tubular web structure to active the binder and form a shaped sorbent filter. The tubular web structure preferably is deformed while it is heated so that there is provided at least one permanently deformed bending portion. The invention method provides a simple effective process for forming complex overwrapped shaped small sorbent filters for use in the electronics industry.