Valve assembly for a respirator

- Siebe North, Inc.
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Description

FIG. 1 is an exploded perspective view of a valve assembly of respirator showing my new design;

FIG. 2 is a rear perspective view of the respirator shown in assembled condition;

FIG. 3 is a front perspective view of FIG. 2.

Referenced Cited
U.S. Patent Documents
537678 April 1895 Detourbe
2067822 January 1937 Biederman
3014479 December 1961 Matheson
3072119 January 1963 Matheson
3307543 March 1967 Silverman
4454881 June 19, 1984 Huber et al.
4501272 February 26, 1985 Shigematsu et al.
4549543 October 29, 1985 Moon
Other references
  • Direct Safety Company 1983-K Catalog, p. 15 Mask/Respirator, Multi-Purpose Organic Vapor, Acid Gas.
Patent History
Patent number: D294410
Type: Grant
Filed: Apr 9, 1985
Date of Patent: Feb 23, 1988
Assignee: Siebe North, Inc. (Charleston, SC)
Inventor: Edward N. Montesi (Barrington, RI)
Primary Examiner: James M. Gandy
Assistant Examiner: Kay H. Chin
Law Firm: Abelman Frayne Rezac & Schwab
Application Number: 6/721,288
Classifications
Current U.S. Class: D29/7