US3570808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling assembly for underwater face mask
Assignee: Individual
•
Filing: 1969-03-20
•
Granted: 1971-03-16
•
Expires: 1989-03-20
Abstract
Abstract An improved coupling assembly is provided for releasably attaching an air hose, or the like, to a second stage regulator of the type used in conjunction with the face mask or mouthpiece of underwater diving equipment. The coupling is readily detachable, and a double valve mechanism is provided, so that when the air hose is decoupled from the regulator underwater, valves in both the regulator air inlet and in the end of the air hose are immediately biased to a closed condition.
Inventors
- 👤 Jack Louis Wrenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:56
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B63C11/22; B63C11/2227; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87965
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
155 words
A coupling assembly for coupling an air hose to a face mask of underwater diving equipment, said coupling assembly including: a first tubular housing coupled to said air hose and having an open end; a normally closed spring loaded valve mounted in said tubular housing; a second tubular housing mounted on said face mask and having a plug-shaped end received in said open end of said first tubular housing and engaging said spring-loaded valve therein to hold said valve in an open condition; a spring-loaded demand valve mounted in said second tubular housing, said demand valve including means for normally biasing said demand valve to a closed condition, and further including an actuator for said demand valve; and means mounted on said first tubular housing for releasably retaining said second tubular housing in coupled relationship therewith with said plug-shaped end of said second tubular housing received in said open end of said first tubular housing.
Claim 2
Dependent Claim
155 words
A coupling assembly for coupling an air hose to a face mask of underwater diving equipment, said coupling assembly including: a first tubular housing coupled to said air hose and having an open end; a normally closed spring loaded valve mounted in said tubular housing; a second tubular housing mounted on said face mask and having a plug-shaped end received in said open end of said first tubular housing and engaging said spring-loaded valve therein to hold said valve in an open condition; a spring-loaded demand valve mounted in said second tubular housing, said demand valve including means for normally biasing said demand valve to a closed condition, and further including an actuator for said demand valve; and means mounted on said first tubular housing for releasably retaining said second tubular housing in coupled relationship therewith with said plug-shaped end of said second tubular housing received in said open end of said first tubular housing.
Claim 3
Dependent Claim
92 words
The coupling assembly defined in claim 1 in which said retaining means includes a spring-loaded sleeve slidable on the external surface of said first tubular housing, and retaining balls mounted in holes in said first tubular housing to be forced radially inwardly when said sleeve is released, said plug-shaped end of said second tubular housing having a shoulder thereon which is engaged by said balls when said sleeve is released so as to retain said plug-shaped end of said second tubular member releasably in said open end of said first tubular housing.
References Cited (Backward Citations)
US2322877A
Cited
US2419503A
Cited
US2503495A
Cited
US2744770A
Cited
US3138155A
Cited
US3292618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |