US3580213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming paddles
Assignee: Individual
•
Filing: 1969-10-06
•
Granted: 1971-05-25
•
Expires: 1989-10-06
Abstract
Abstract A shaft has oppositely extending offset portions at opposite ends, each portion being connected to a corresponding flotation paddle. Straps secure the shaft rotatably to a user in water. The user, using hands or feet, rotates the shaft to move the paddles and propel himself in the water. The paddles are lighter than water and act as floats as well as assisting in propulsion.
Inventors
- 👤 Melville J G Yuen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:24
CPC Classifications
A; A63; A63B; A63B35/00; A63B35/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
56 words
Apparatus used in swimming comprising: A HORIZONTAL SHAFT; FIRST AND SECOND EXTENSION ARMS EXTENDING INCLINEDLY OUTWARDS FROM OPPOSITE ENDS OF SAID SHAFT IN OPPOSITE DIRECTIONS; HAND- OR FOOT-OPERATED MEANS SECURED TO SAID ARMS TO ROTATE SAID SHAFT ABOUT ITS AXIS; AND FIRST AND SECOND LIGHTER-THAN-WATER PADDLE WHEELS SECURED TO CORRESPONDING ARMS AND ROTATED WITH SAID SHAFT.
Claim 2
Dependent Claim
56 words
Apparatus used in swimming comprising: A HORIZONTAL SHAFT; FIRST AND SECOND EXTENSION ARMS EXTENDING INCLINEDLY OUTWARDS FROM OPPOSITE ENDS OF SAID SHAFT IN OPPOSITE DIRECTIONS; HAND- OR FOOT-OPERATED MEANS SECURED TO SAID ARMS TO ROTATE SAID SHAFT ABOUT ITS AXIS; AND FIRST AND SECOND LIGHTER-THAN-WATER PADDLE WHEELS SECURED TO CORRESPONDING ARMS AND ROTATED WITH SAID SHAFT.
Claim 3
Dependent Claim
33 words
Apparatus as set forth in claim 1 wherein each arm has at an end remote from said shaft a horizontal extension with a vertical tip, each wheel being secured to a corresponding tip.
Claim 4
Dependent Claim
35 words
Apparatus as set forth in claim 2 wherein said means includes a first sleeve rotatable about the horizontal extension of one arm and a second sleeve rotatable about the horizontal extension of the other arm.
Claim 5
Dependent Claim
24 words
Apparatus as set forth in claim 3 further including a pair of hand- or foot-operated straps, each strap being secured to a corresponding sleeve.
References Cited (Backward Citations)
US1777749A
Cited
US2416471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |