Patent EP0318866A2 successfully refreshed from Google Patents.
Patent US3635188A successfully refreshed from Google Patents.
US3635188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater propulsion device
Assignee: Individual
•
Filing: 1969-08-08
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Granted: 1972-01-18
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Expires: 1989-08-08
Abstract
Abstract An underwater propulsion device having a separate housing carrying a propulsion motor and a propeller adapted to be attached to a swimmer''s foot as by a shoe with power units, such as batteries or compressed gas carried by the swimmer and carrying a plurality of annular flotation rings around the periphery of the housing; the housing being hingedly attached to the swimmer''s shoe for allowing the swimmer to walk on the ocean bottom or other surfaces.
Inventors
- 👤 Joseph Rutkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:00
CPC Classifications
A; A63; A63B; A63B35/00; A63B35/08; A63B35/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
85 words
An underwater propulsion device for propelling a swimmer in an aqueous medium comprising, a single housing having a closed end and a substantially open end with sides having openings therethrough, means for securing said closed end of said housing to the bottom of a swimmer''s foot, a propeller positioned in said housing adjacent said open end, and motor means mounted in said housing for supporting and rotating said propeller and moving the aqueous medium through said openings in said sides and out said open end.
Claim 2
Dependent Claim
85 words
An underwater propulsion device for propelling a swimmer in an aqueous medium comprising, a single housing having a closed end and a substantially open end with sides having openings therethrough, means for securing said closed end of said housing to the bottom of a swimmer''s foot, a propeller positioned in said housing adjacent said open end, and motor means mounted in said housing for supporting and rotating said propeller and moving the aqueous medium through said openings in said sides and out said open end.
Claim 3
Dependent Claim
42 words
An underwater propulsion device as claimed in claim 1 in which, said open end has an enlarged edge surface that is substantially larger than the thickness of said sides for contacting a supporting surface and supporting said propulsion device and the swimmer.
Claim 4
Dependent Claim
32 words
An underwater propulsion device as claimed in claim 2 including, flotation means positioned on said housing adjacent said enlarged edge surface for supporting said propulsion device when not secured to the swimmer.
Claim 5
Dependent Claim
47 words
An underwater propulsion device as claimed in claim 1 in which, said securing means includes hinge means positioned adjacent an intersection of said closed end and said sides, on which said housing and motor and propeller can be pivoted away from a position below the swimmer''s foot.
Claim 6
Dependent Claim
33 words
An underwater propulsion device as claimed in claim 4 including, a plate for being secured to the bottom of the foot of the swimmer, and said closed end is hinged to said plate.
Claim 7
Dependent Claim
27 words
An underwater propulsion device as claimed in claim 5 including, means secured to the leg of the swimmer for holding said housing in said pivoted way position.
References Cited (Backward Citations)
FR826629A
Cited
US3422787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |