Moisture and heat exchanger for respiratory apparatus

- Louis Gibeck AB
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Description

FIG. 1 is a perspective view of a moisture and heat exchanger for respiratory apparatus showing my new design; and

FIG. 2 is a side elevation thereof.

Referenced Cited
U.S. Patent Documents
D235035 April 1975 Rosenberg
3236236 February 1966 Hudson
3345047 October 1967 Gooden
3922525 November 1975 Kozak et al.
3941573 March 2, 1976 Chapel
Other references
  • Anchor Coupling Co. Inc., catalog No. 404, .RTM.1963, p. 48, "O" Ring Weld Fitting.
Patent History
Patent number: D253721
Type: Grant
Filed: Jul 25, 1977
Date of Patent: Dec 18, 1979
Assignee: Louis Gibeck AB
Inventor: Sten G. Gibeck (Upplands Vasby)
Primary Examiner: Bernard Ansher
Attorney: Eric H. Waters
Application Number: 5/818,729
Classifications
Current U.S. Class: D24/52; D24/21; D23/4; D23/149
International Classification: D2402;