Mouthpiece block for underwater breathing apparatus
Description
FIG. 1 is a perspective view of a mouthpiece block for underwater breathing apparatus showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is an elevation as seen from the right of FIG. 2;
FIG. 4 is an end elevation thereof;
FIG. 5 is a cross section taken on line 5--5 of FIG. 3;
FIG. 6 is a cross section taken on line 6--6 of FIG. 3; and,
FIG. 7 is a cross section taken on line 7--7 of FIG. 5.
The broken lines are shown for illustrative purposes only.
Referenced Cited
U.S. Patent Documents
D203640 | February 1966 | Shugarman |
3107667 | October 1963 | Moore |
3123680 | March 1964 | Minton, Jr. et al. |
3124129 | March 1964 | Grossberg |
3207154 | September 1965 | Rubilotta et al. |
3224444 | December 1965 | Dempster |
3669109 | June 1972 | Cheffers et al. |
3747598 | July 1973 | Cowans |
3844281 | October 1974 | Shamilian |
Patent History
Patent number: D246671
Type: Grant
Filed: Dec 15, 1975
Date of Patent: Dec 13, 1977
Inventor: Leon A. Cerniway (Mission Viejo, CA)
Primary Examiner: Bernard Ansher
Attorney: George F. Bethel
Application Number: 5/640,438
Type: Grant
Filed: Dec 15, 1975
Date of Patent: Dec 13, 1977
Inventor: Leon A. Cerniway (Mission Viejo, CA)
Primary Examiner: Bernard Ansher
Attorney: George F. Bethel
Application Number: 5/640,438
Classifications
Current U.S. Class:
D29/7
International Classification: D2902;
International Classification: D2902;