Patent US3319951A successfully refreshed from Google Patents.
US3319951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexural pivot device and method of making same
Assignee: Bendix Corp
•
Filing: 1965-03-15
•
Granted: 1967-05-16
•
Expires: 1985-03-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Seelig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:15
CPC Classifications
B; B21; B21D; B21D53/00; F; F16; F16C; F16C11/00; F16C11/04; F16C11/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A FLEXURAL PIVOT DEVICE COMPRISING: A TUBULAR CORE MEANS HAVING TWO AXIALLY-EXTENDING ARCUATE MEMBERS OF UNIFORM THICKNESS THROUGHOUT; FLAT LONGITUDINALLY-SPACED CROSSED SPRING MEANS INTERCONNECTING SAID AXIALLY-EXTENDING ARCUATE MEMBERS ON A SUBSTANTIALLY COMMON CIRCLE, SAID SPRING MEANS HAVING A DIAMETER SUBSTANTIALLY EQUAL TO THE DIAMETER OF SAID TUBULAR CORE; SAID AXIALLY-EXTENDING ARCUATE MEMBERS HAVING A TOTAL ARC LENGTH LESS THAN 360*, THEREBY PROVIDING A CIRCUMFERENTIAL GAP BETWEEN SAID AXIALLY-EXTENDING ARCUATE MEMBERS; A PLURALITY OF CYLINDRICAL OUTER SLEEVE MEANS HAVING AN AXIALLY-EXTENDING, RADIALLY-INWARDLY-PROJECTING INNER SURFACE OVER A PORTION OF SAID OUTER SLEEVE CIRCUMFERENCE; AND SAID RADIALLY-INWARDLY-EXTENDING INNER CIRCUMFERENTIAL SURFACES CONNECTED TO SAID AXIALLY-EXTENDING ARCUATE MEMBERS SO TO PERMIT RELATIVE ANGULAR DISPLACEMENT THEREBETWEEN.
Claim 2
Dependent Claim
110 words
A FLEXURAL PIVOT DEVICE COMPRISING: A TUBULAR CORE MEANS HAVING TWO AXIALLY-EXTENDING ARCUATE MEMBERS OF UNIFORM THICKNESS THROUGHOUT; FLAT LONGITUDINALLY-SPACED CROSSED SPRING MEANS INTERCONNECTING SAID AXIALLY-EXTENDING ARCUATE MEMBERS ON A SUBSTANTIALLY COMMON CIRCLE, SAID SPRING MEANS HAVING A DIAMETER SUBSTANTIALLY EQUAL TO THE DIAMETER OF SAID TUBULAR CORE; SAID AXIALLY-EXTENDING ARCUATE MEMBERS HAVING A TOTAL ARC LENGTH LESS THAN 360*, THEREBY PROVIDING A CIRCUMFERENTIAL GAP BETWEEN SAID AXIALLY-EXTENDING ARCUATE MEMBERS; A PLURALITY OF CYLINDRICAL OUTER SLEEVE MEANS HAVING AN AXIALLY-EXTENDING, RADIALLY-INWARDLY-PROJECTING INNER SURFACE OVER A PORTION OF SAID OUTER SLEEVE CIRCUMFERENCE; AND SAID RADIALLY-INWARDLY-EXTENDING INNER CIRCUMFERENTIAL SURFACES CONNECTED TO SAID AXIALLY-EXTENDING ARCUATE MEMBERS SO TO PERMIT RELATIVE ANGULAR DISPLACEMENT THEREBETWEEN.
References Cited (Backward Citations)
US3073584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |