Patent US3304031A successfully refreshed from Google Patents.
US3304031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catapult delayed release element
Assignee: Individual
•
Filing: 1965-04-30
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Granted: 1967-02-14
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Expires: 1985-04-30
Abstract
No abstract record available.
Inventors
- 👤 James J Mulquin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:47
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/04; B64F1/06; F; F16; F16B; F16B2200/00; F16B2200/63
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A FRANGIBLE TENSION BAR COMPRISING: A FIRST CONNECTING PORTION; A SECOND CONNECTING PORTION; A SHANK PORTION EXTENDING AXIALLY BETWEEN SAID FIRST AND SECOND CONNECTING PORTIONS; AND AT LEAST TWO AXIALLY DISPLACED NOTCHES IN SUBSTANTIALLY OPPOSITE SURFACES OF SAID SHANK, SAID NOTCHES EXTENDING RADIALLY INTO SAID SHANK TO A DEPTH GREATER THAN HALF THE SHANK THICKNESS TO DEFINE AN OFFSET LOAD AXIS WHEREBY THE APPLICATION OF A TENSILE LOAD TO THE BAR CREATES A COUPLE TENDING TO STRAIGHTEN SAID EFFECTIVE LOAD AXIS AND ELONGATE SAID TENSION BAR, PRIOR TO FAILURE.
Claim 2
Dependent Claim
89 words
A FRANGIBLE TENSION BAR COMPRISING: A FIRST CONNECTING PORTION; A SECOND CONNECTING PORTION; A SHANK PORTION EXTENDING AXIALLY BETWEEN SAID FIRST AND SECOND CONNECTING PORTIONS; AND AT LEAST TWO AXIALLY DISPLACED NOTCHES IN SUBSTANTIALLY OPPOSITE SURFACES OF SAID SHANK, SAID NOTCHES EXTENDING RADIALLY INTO SAID SHANK TO A DEPTH GREATER THAN HALF THE SHANK THICKNESS TO DEFINE AN OFFSET LOAD AXIS WHEREBY THE APPLICATION OF A TENSILE LOAD TO THE BAR CREATES A COUPLE TENDING TO STRAIGHTEN SAID EFFECTIVE LOAD AXIS AND ELONGATE SAID TENSION BAR, PRIOR TO FAILURE.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |