Heat-recuperating mask

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Description

FIG. 1 is a perspective view of a heat-recuperating mask showing our new design in working position, the broken line showing of the head is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a perspective view of a heat-recuperating mask while in folded position;

FIG. 3 is a top plan view thereof in open position;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view of thereof, the right side elevational view being identical thereto;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a rear elevational view thereof while in working position; and,

FIG. 8 is a rear elevational view thereof while in folded position.

Referenced Cited
U.S. Patent Documents
RE24549 October 1958 Haliczer
D195612 July 1963 Lioia
2915060 December 1959 Miner
2964038 December 1960 Silverman
4245631 January 20, 1981 Wilkinson et al.
4248220 February 3, 1981 White
4793343 December 27, 1988 Cummins, Jr. et al.
4905686 March 6, 1990 Adams
Patent History
Patent number: D344608
Type: Grant
Filed: Jun 28, 1991
Date of Patent: Feb 22, 1994
Inventors: Alexandr F. Goryachy (127349 Moskva), Ljudmila N. Rastorgueva (677001 Jakutsk), Vitaly V. Golikov (119435, Moskva), Yevgeny S. Petrashkin (140007, Moskovskava), Alexandr A. Semkov (617540, Permskaya), Mikhail N. Dementiev (617540 Permskaya), Gennady V. Panfilov (617540 Permskaya)
Primary Examiner: A. Hugo Word
Assistant Examiner: I. Simmons
Law Firm: Ladas & Parry
Application Number: 7/724,343
Classifications
Current U.S. Class: D29/8; Pulmonary (38) (D24/164)