US3552347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas powered swimming aid
Assignee: Individual
•
Filing: 1969-03-20
•
Granted: 1971-01-05
•
Expires: 1989-03-20
Abstract
Abstract A marine propulsion device which operates by transfer of electrical energy to the intermittent discharge of a nontoxic gas into the confines of a nonporous tubing and the subsequent driving of a propeller by the gas discharge. The device includes a frame having cam means reciprocally operating a spring tensioned rod which controls the discharge of compressed gas from a container.
Inventors
- 👤 Caryl C B Hastings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:03
CPC Classifications
A; A63; A63B; A63B35/00; A63B35/08; A63B35/12; A63B35/125
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
112 words
A marine propulsion device comprising a frame having an opening extending therethrough, propeller means rotatably mounted in said opening and including a plurality of spaced members radiating from its center, container means for compressed gas mounted on said frame, tubing means connected to said container means and having a portion thereof mounted around the inner periphery of said opening, means for intermittently discharging compressed gas from said container means into said tubing means, and roller means mounted on said members and abutting and slightly compressing said tubing along the inner periphery of said opening for moving said rollers and rotating said propeller means as gas is intermittently discharged from said container means.
Claim 2
Dependent Claim
112 words
A marine propulsion device comprising a frame having an opening extending therethrough, propeller means rotatably mounted in said opening and including a plurality of spaced members radiating from its center, container means for compressed gas mounted on said frame, tubing means connected to said container means and having a portion thereof mounted around the inner periphery of said opening, means for intermittently discharging compressed gas from said container means into said tubing means, and roller means mounted on said members and abutting and slightly compressing said tubing along the inner periphery of said opening for moving said rollers and rotating said propeller means as gas is intermittently discharged from said container means.
Claim 3
Dependent Claim
63 words
A device according to claim 1, wherein said means for intermittently discharging compressed gas from said container includes cam means, a rod secured to the upper portion of said container and abutting the periphery of said cam means, and spring means about said rod for controlling the intermittent discharge of gas from said container by reciprocating upward and downward movement of said rod.
Claim 4
Dependent Claim
35 words
A device according to claim 1, including a motor in said frame driving said cam means, a source of electrical power in said frame, and electrical connection means electrically connecting said source to said motor.
Claim 5
Dependent Claim
16 words
A device according to claim 1, including means on said frame for removing said container means.
Claim 6
Dependent Claim
38 words
A device according to claim 1, including a pair of complementary hand grips, each of said hand grips being parallel to one another and being attached to opposite sides of said frame for facilitating control of said device.
Claim 7
Dependent Claim
28 words
A device according to claim 1, wherein the free end of said tubing means is secuRed to the outside of said frame for discharging gas from said device.
Claim 8
Dependent Claim
17 words
A device according to claim 1, wherein said tubing means is fabricated from a nonporous elastic material.
Claim 9
Dependent Claim
12 words
A device according to claim 1, wherein said compressed gas is Freon.
References Cited (Backward Citations)
US910125A
Cited
US2722021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |