Hardhat respirator hood


FIG. 1 is a perspective view of the hardhat respirator hood showing my new design being worn, the dotted line portions of the drawing being for illustrative purposes only;

FIG. 2 is a left side elevational view thereof, the right side being a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and

FIG. 5 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
D249168 August 29, 1978 Sweet
Other references
  • Jackson Quality Products Catalog, Nov. 1965, p. 4, item #2, "Hardtop Fiberglass Cap", type SC-10.
Patent History
Patent number: D261942
Type: Grant
Filed: Apr 9, 1979
Date of Patent: Nov 17, 1981
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Inventor: Lawrence A. Sweet (Lakeland, MN)
Primary Examiner: Joel Stearman
Assistant Examiner: Carmen H. Vales
Attorneys: Cruzan Alexander, Donald M. Sell, Edward T. Okubo
Application Number: 6/28,073
Current U.S. Class: D29/7; D/2232
International Classification: D2902; D0203;