Coupler for respiratory apparatus

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Description

FIG. 1 is an isometric view of a side and the upper end of my new coupler for respiratory apparatus;

FIG. 2 is an isometric view thereof, showing the other side and lower end thereof;

FIG. 3 is a view in side elevation thereof, with a portion of the wall broken away and an interior stem portion shown in central cross-section;

FIG. 4 is a view in front elevation of the device;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
2071780 February 1937 Aghnides
3122139 February 1964 Jones, Jr.
3910283 October 1975 Leveen
3926458 December 1975 Dryden
D237552 November 1975 Willmott
D238876 February 1976 Andersson
Patent History
Patent number: D245921
Type: Grant
Filed: Dec 15, 1975
Date of Patent: Sep 27, 1977
Inventor: Anthony V. Beran (Santa Ana, CA)
Primary Examiner: Bernard Ansher
Attorney: Harvey C. Nienow
Application Number: 5/640,399
Classifications
Current U.S. Class: D24/53
International Classification: D2499; D2301;