Filter to be attached around user's waist for purifying air in a supplied air breathing system for use in otherwise hazardous environments

Description

FIG. 1 is a front elevation view of a filter to be attached around user's waist for purifying air in a supplied air breathing system for use in otherwise hazardous environment showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D212064 August 1968 Campbell et al.
1176711 March 1916 Gibbs
2400180 May 1946 Venable
4403587 September 13, 1983 Mizuno et al.
4446869 May 8, 1984 Fnodle
4506667 March 26, 1985 Ansite
5038768 August 13, 1991 McGoff et al.
Foreign Patent Documents
149445 December 1936 ATX
331364 January 1921 DE2
385500 December 1932 GBX
Patent History
Patent number: D330587
Type: Grant
Filed: Oct 29, 1990
Date of Patent: Oct 27, 1992
Inventor: Larry E. Seeley (Port Richey, FL)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lisa Lichtenstein
Law Firm: Nixon & Vanderhye
Application Number: 7/604,909
Classifications