Patent US3814090A successfully refreshed from Google Patents.
US3814090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mouthpiece for a snorkel
Assignee: IMP Manufacturing and Engineering Co
•
Filing: 1972-07-25
•
Granted: 1974-06-04
•
Expires: 1992-07-25
Abstract
Abstract An improved mouthpiece for a snorkel wherein the mouthpiece comprises a curved flap of flexible material having an arc length of 3 1/2 to 4 1/4 inches and has a smooth concave surface so that the same may be retained in the mouth of a diver without necessity of the diver exerting a gripping force on the mouthpiece with his teeth.
Inventors
- 👤 J Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:20
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B63C11/20; B63C11/205; B63C11/186
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
In a snorkel breathing tube including a tubular member having a relatively straight section terminating in an end adapted to be located above the surface of a body of water and a curved portion including a flexible mouthpiece opening in fluid communication with the interior of the tube, the improvement in said mouthpiece wherein said mouthpiece comprises a curved flap having a relatively smooth concave surface an arc length in the range of 3 1/2 to 4 1/4 inches, a radius of approximately 2 inches and extends to both sides of said tube at the point of connection thereto a distance in the range of 1 1/8 - 1 1/4 inches whereby said mouthpiece may be easily retained in the mouth of a diver without requiring the diver to grip the same with his teeth.
Claim 2
Dependent Claim
135 words
In a snorkel breathing tube including a tubular member having a relatively straight section terminating in an end adapted to be located above the surface of a body of water and a curved portion including a flexible mouthpiece opening in fluid communication with the interior of the tube, the improvement in said mouthpiece wherein said mouthpiece comprises a curved flap having a relatively smooth concave surface an arc length in the range of 3 1/2 to 4 1/4 inches, a radius of approximately 2 inches and extends to both sides of said tube at the point of connection thereto a distance in the range of 1 1/8 - 1 1/4 inches whereby said mouthpiece may be easily retained in the mouth of a diver without requiring the diver to grip the same with his teeth.
Claim 3
Dependent Claim
15 words
A snorkel according to claim 1 wherein said arc length is approximately 3 7/8 inches.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |