Combined respirator face piece and strap units

Description

FIG. 1 is a front view of a combined respirator face piece and strap units showing our new design with a pair of detachable filter units being shown in broken lines spaced apart from each side of the face piece for illustrative environmental purposes only;

FIG. 2 is a side elevation view in the direction of lines 2--2 of FIG. 1 which symmetrical to the other side of the face piece;

FIG. 3 shows a sectional view through lines 3--3 of FIG. 1;

FIG. 4 shows a rear view opposite from the showing of FIG. 1;

FIG. 5 shows a sectional view through lines 5--5 of FIG. 1;

FIG. 6 shows a bottom view looking upwardly in the direction of lines 6--6 of FIG. 1; and,

FIG. 7 shows a view looking downwardly in the direction of lines 7--7 of FIG. 1

Portions of the straps are shown fragmentally in FIGS. 1 and 2, and display of the straps as omitted altogether in FIGS. 3-7, for ease of illustration .

Claims

The ornamental design for a combined respirator face piece and strap units, as shown and described.

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Inventors:	Matheson; James N. (Mission Viejo, CA), Lowry; Philip L. (Costa Mesa, CA)
Assignee:	U.S.D. Corp. (Santa Ana, CA)
Appl. No.:	06/239,693
Filed:	March 2, 1981

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Current U.S. Class:	D24/110.1; D24/110.4
Current International Class:	D2902
Field of Search:	;D29/7,8,9 ;128/206.28,207.12,206.15,206.24,206.17,206.21 ;D2/234

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References Cited [Referenced By]

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U.S. Patent Documents

D190705	June 1961	Gongoll
2166164	July 1939	Lehmbon g
2327995	August 1943	Bulbulian
2341566	February 1944	Monro
2344669	March 1944	Barken et al.
2652828	September 1953	Matheson
2744525	May 1956	Whipple
2823671	February 1958	Ganelick
2858828	November 1958	Matheson
2939458	June 1960	Lundquist
2999498	September 1961	Matheson

Primary Examiner: Burke; Wallace R.
Assistant Examiner: Fay, Jr.; Horace B.
Attorney, Agent or Firm: Bethel; George F. Bethel; Patience K.