US3658326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-bulb, fluid filled hand exercising device
Assignee: Individual
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Filing: 1968-03-11
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Granted: 1972-04-25
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Expires: 1988-03-11
Abstract
Abstract The present hand exercising device has a pair of air-filled rubber bulbs, one for each hand, and an unobstructed small diameter passageway connecting the bulbs. Preferably, this passageway is provided by a rubber tube which may be longitudinally stretchable. One bulb carries a normally-closed check valve which opens if the air pressure in the device drops below atmospheric pressure.
Inventors
- 👤 Thomas L Fawick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:16
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/12; A63B23/16; A63B21/00; A63B21/008; A63B21/0085
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
60 words
A hand exercising device comprising a pair of fluid-filled bulbs of deformable material and each shaped to be gripped in a respective hand of the user, means providing an unobstructed small diameter passageway between said bulbs, and a normally closed check valve on one bulb which opens if the internal fluid pressure in the device drops significantly below atmospheric pressure.
Claim 2
Dependent Claim
60 words
A hand exercising device comprising a pair of fluid-filled bulbs of deformable material and each shaped to be gripped in a respective hand of the user, means providing an unobstructed small diameter passageway between said bulbs, and a normally closed check valve on one bulb which opens if the internal fluid pressure in the device drops significantly below atmospheric pressure.
Claim 3
Dependent Claim
96 words
A hand-exercising device comprising a pair of air-filled bulbs and a connecting tube extending between them, each of said bulbs being of flexible and resilient rubber-like material and being shaped and dimensioned to fit in a respective hand of the user, said connecting tube being sealed to each bulb and presenting an obstructed small diameter air passageway connected at its opposite ends to the interior of said bulbs, and a normally closed check valve on one bulb which is constructed and arranged to open if the air pressure in the device drops significantly below atmospheric pressure.
Claim 4
Dependent Claim
96 words
A hand-exercising device comprising a pair of air-filled bulbs and a connecting tube extending between them, each of said bulbs being of flexible and resilient rubber-like material and being shaped and dimensioned to fit in a respective hand of the user, said connecting tube being sealed to each bulb and presenting an obstructed small diameter air passageway connected at its opposite ends to the interior of said bulbs, and a normally closed check valve on one bulb which is constructed and arranged to open if the air pressure in the device drops significantly below atmospheric pressure.
Claim 5
Dependent Claim
17 words
A hand-exercising device according to claim 2, wherein said tube is flexible and is longitudinally stretchable manually.
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |