US4089528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Raft with removable weighted members that provide buoyancy
Assignee: Individual
•
Filing: 1976-12-20
•
Granted: 1978-05-16
•
Expires: 1996-12-20
Abstract
Abstract A weight lifting device or apparatus specially adapted for use in water, such as pools, or at the beach, the weight of which may be varied to fit the needs of the user. Special filling and draining arrangement facilitates adding or removing water equally and simultaneously from both ends of the device to insure balance between the two ends.
Inventors
- 👤 William J. Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:27
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/06; A63B21/0601; A63B21/0602; A63B21/072; A63B21/0728
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
220 words
A device comprising: a first shaft, a pair of hollow containers, one mounted at each end of said shaft, each of said containers being provided with an inlet-outlet port and means for opening and closing said port, said containers each comprising a cylindrical bearing means extending axially thereof for receiving an end of said shaft, said cylindrical bearing means and the associated end of said shaft being provided with interlocking means for orienting each of said containers and its port in similar positions on said shaft, said means for opening and closing the port of each container comprising a resilient tab fixedly mounted at one end on said container and provided with a resilient plug at its other end for insertion into said port for sealing it, whereby said port may be opened by lifting the plug end of said tab away from said port and the containers partially or completely filled with water to vary the weight of the containers at each end of the shaft, second shaft and containers in combination identical in structure to the first shaft and containers and spacedly positioned in a parallel coplanar arrangement with the first shaft and its containers, and platform means extending over the shafts of the device and removably interlocking therewith for providing a raft for use on the water.
Claim 2
Independent Claim
220 words
A device comprising: a first shaft, a pair of hollow containers, one mounted at each end of said shaft, each of said containers being provided with an inlet-outlet port and means for opening and closing said port, said containers each comprising a cylindrical bearing means extending axially thereof for receiving an end of said shaft, said cylindrical bearing means and the associated end of said shaft being provided with interlocking means for orienting each of said containers and its port in similar positions on said shaft, said means for opening and closing the port of each container comprising a resilient tab fixedly mounted at one end on said container and provided with a resilient plug at its other end for insertion into said port for sealing it, whereby said port may be opened by lifting the plug end of said tab away from said port and the containers partially or completely filled with water to vary the weight of the containers at each end of the shaft, second shaft and containers in combination identical in structure to the first shaft and containers and spacedly positioned in a parallel coplanar arrangement with the first shaft and its containers, and platform means extending over the shafts of the device and removably interlocking therewith for providing a raft for use on the water.
Claim 3
Dependent Claim
108 words
The device set forth in claim 1 wherein: said bearing means on each of said containers comprises a pair of nipples extending outwardly of the outside periphery of the container on opposite sides thereof along its longitudinal axis, and cap means for fitting over and engaging with each of said nipples of each container, one of said cap means covering the end of said shaft extending into each container, and the other of said cap means being provided with an aperture for receiving therein said shaft and being moveable therealong and over the other of said nipples of each container, said cap means sealing water within the container.
Claim 4
Dependent Claim
28 words
The device set forth in claim 2 wherein: said nipples are threaded along their outer periphery for engaging with matching threads provided within each of said cap means.
Claim 5
Dependent Claim
40 words
The device set forth in claim 1 wherein: at least one of the containers on each shaft being provided with a scale on its periphery for indicating the fluid content therein when is used separately as a weight lifting device.
Claim 6
Dependent Claim
22 words
The device set forth in claim 4 wherein: said hollow containers are transparent configurations axially mounted on the ends of said shafts.
Claim 7
Dependent Claim
15 words
The device set forth in claim 1 wherein: said containers are generally spherical in shape.
Claim 8
Dependent Claim
33 words
The device set forth in claim 1 wherein: said platform means is positioned between the containers on each shafts and interlocking releasably said shafts for providing a raft for use on the water.
References Cited (Backward Citations)
GB191228047A
Cited
US808706A
Cited
US984721A
Cited
US1019584A
Cited
US2676802A
Cited
US3106311A
Cited
GB999033A
Cited
CA966866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |