Lloyd A. Pfaff
Engineering in Auburndale, FL
License number
Louisiana PE.0012865
Issued Date
Aug 3, 1971
Expiration Date
Sep 30, 2012
Category
Civil Engineer
Address
Address
16 Fish Hvn Rd, Auburndale, FL 33823
Professional information
Process For Making Laminated Roofing Shingles
US Patent:
4198257, Apr 15, 1980
Filed:
Feb 8, 1979
Appl. No.:
6/010369
Inventors:
Lloyd A. Pfaff - Auburndale FL
International Classification:
B32B 3100
US Classification:
156260
Abstract:
An apparatus cuts a continuous length of saturated felt into wide and narrow sheets and laterally shifts both the first and second sheets in opposite directions into a spaced apart overlying relationship where the center lines of both shifted sheets are aligned with the center line of the uncut felt sheet. Various materials are applied to the exposed surfaces of the upper and lower sheets which are finally laminated together into a single layered sheet. The laminated sheet is then cooled, cut into predetermined lengths and packaged.