Patent US3228392A successfully refreshed from Google Patents.
US3228392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abdominal exerciser
Assignee: Individual
•
Filing: 1963-07-15
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Granted: 1966-01-11
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Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Walter L Speyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:58
CPC Classifications
A; A61; A61H; A61H23/00; A61H23/06; A61H23/02; A61H23/0218; A63; A63B; A63B23/00; A63B23/02; A63B23/0205; A63B23/0211; A63B21/00; A63B21/02; A63B21/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
AN ABDOMINAL EXERCISER, COMPRISING A RESILIENT DISHED PLATE HAVING OPPOSING CONCAVE AND CONVEX SIDES, SAID CONVEX SIDE BEING SMOOTH FOR APPLYING TO THE ABDOMEN, A HOLLOW STEM EXTENDING AXIALLY UPWARD FROM THE CONCAVE SIDE OF SAID PLATE, A SLEEVE CONCENTRIC WITH SAID STEM AND AXIALLY SLIDABLE WITH RESPECT TO THE STEM, MEANS RETAINING THE SLEEVE ON THE STEM, SAID SLEEVE HAVING AN AXIAL BORE, A COIL SPRING AXIALLY DISPOSED IN SAID BORE AND EXTENDING THROUGH THE STEM, MEANS FOR ANCHORING ONE END OF THE SPRING IN SAID SLEEVE AND THE OTHER END OF THE SPRING BEARING DOWN ON SAID PLATE, AND A HANDLE ATTACHED TO SAID ONE END OF THE SLEEVE AND EXTENDING LONGITUDINALLY PERPENDICULAR TO THE AXIS OF SAID SLEEVE FOR MANUALLY RECIPROCATING THE SLEEVE ON THE STEM, WHEREBY VARYING PRESSURE IS APPLIED TO ABDOMEN VIA SAID SPRING AND SAID PLATE.
Claim 2
Dependent Claim
142 words
AN ABDOMINAL EXERCISER, COMPRISING A RESILIENT DISHED PLATE HAVING OPPOSING CONCAVE AND CONVEX SIDES, SAID CONVEX SIDE BEING SMOOTH FOR APPLYING TO THE ABDOMEN, A HOLLOW STEM EXTENDING AXIALLY UPWARD FROM THE CONCAVE SIDE OF SAID PLATE, A SLEEVE CONCENTRIC WITH SAID STEM AND AXIALLY SLIDABLE WITH RESPECT TO THE STEM, MEANS RETAINING THE SLEEVE ON THE STEM, SAID SLEEVE HAVING AN AXIAL BORE, A COIL SPRING AXIALLY DISPOSED IN SAID BORE AND EXTENDING THROUGH THE STEM, MEANS FOR ANCHORING ONE END OF THE SPRING IN SAID SLEEVE AND THE OTHER END OF THE SPRING BEARING DOWN ON SAID PLATE, AND A HANDLE ATTACHED TO SAID ONE END OF THE SLEEVE AND EXTENDING LONGITUDINALLY PERPENDICULAR TO THE AXIS OF SAID SLEEVE FOR MANUALLY RECIPROCATING THE SLEEVE ON THE STEM, WHEREBY VARYING PRESSURE IS APPLIED TO ABDOMEN VIA SAID SPRING AND SAID PLATE.
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |