Patent US5435172A successfully refreshed from Google Patents.
Patent US3213964A successfully refreshed from Google Patents.
US3213964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platforms
Assignee: BP PLC
•
Filing: 1962-12-28
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Granted: 1965-10-26
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Expires: 1982-12-28
Abstract
No abstract record available.
Inventors
- 👤 Tucker Maurice John
- 👤 Williams Victor Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:08
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/15; E04G1/152; E04G5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
208 words
A PLATFORM FOR USE IN SPANNING TWO SUBSTANTIALLY PARALLEL MEMBERS SPACED APART A PREDETERMINED VARIABLE DISTANCE, COMPRISING: FIRST, SECOND AND THIRD PLANK MEMBERS; SAID SECOND PLANK MEMBER BEING HINGEDLY ATTACHED TO SAID FIRST PLANK MEMBER AND SAID THIRD PLANK MEMBER BEING HINGEDLY ATTACHED TO SAID SECOND PLANK MEMBER, ALL IN SUCH MANNER THA TTHE PLATFORM CAN BE FOLDED CONCERTINALIKE WHEREBY SAID PLANK MEMBERS ARE SUPER-IMPOSED UPON EACH OTHER; MEANS ADAPTED TO SLIDABLY SECURE SAID FIRST PLANK MEMBER IN RELEASABLE LOCKED POSITION TRANSVERSELY OF SAID TWO SPACED APART MEMBERS, SSAID MEANS COMPRISING AT LEAST ONE OPEN-ENDED BRACKET MEMBER AND A LATCH MEMBER; SAID BRACKET MEMBER BEING FIXED NEAR ONE END OF SAID FIRST PLANK MEMBER AND FORMING THEREWITH AN OPEN-ENDED SLOT FOR RECEIVING AND TRANSVERSELY SLIDABLY ACCOMMODATING ONE OF SAID TWO SPACED APART MEMBERS; SAID LATCH MEMBER BEING FIXED NEAR THE OTHER END OF SAID FIRST PLANK MEMBER AND HAVING A HANDLE ELEMENT MOUNTED IN SPACED RELATIONSHIP TO SAID FIRST PLANK MEMBER, SAID HANDLE ELEMENT PIVOTALLY MOVABLE RELATIVE TO SAID FIRST PLANK MEMBER FOR FORMING THEREWITH AN OPEN-ENDED SLOT ADAPTED TO RECEIVE AND TRANSVERSELY SLIDABLY RELEASABLY LATCH THE OTHER OF SAID TWO SPACED APART MEMBERS, WHEREBY SAID PLATFORM IS RELEASABLY LOCKED IN POSITION SPANNING SAID TWO SPACED APART MEMBERS.
Claim 2
Dependent Claim
208 words
A PLATFORM FOR USE IN SPANNING TWO SUBSTANTIALLY PARALLEL MEMBERS SPACED APART A PREDETERMINED VARIABLE DISTANCE, COMPRISING: FIRST, SECOND AND THIRD PLANK MEMBERS; SAID SECOND PLANK MEMBER BEING HINGEDLY ATTACHED TO SAID FIRST PLANK MEMBER AND SAID THIRD PLANK MEMBER BEING HINGEDLY ATTACHED TO SAID SECOND PLANK MEMBER, ALL IN SUCH MANNER THA TTHE PLATFORM CAN BE FOLDED CONCERTINALIKE WHEREBY SAID PLANK MEMBERS ARE SUPER-IMPOSED UPON EACH OTHER; MEANS ADAPTED TO SLIDABLY SECURE SAID FIRST PLANK MEMBER IN RELEASABLE LOCKED POSITION TRANSVERSELY OF SAID TWO SPACED APART MEMBERS, SSAID MEANS COMPRISING AT LEAST ONE OPEN-ENDED BRACKET MEMBER AND A LATCH MEMBER; SAID BRACKET MEMBER BEING FIXED NEAR ONE END OF SAID FIRST PLANK MEMBER AND FORMING THEREWITH AN OPEN-ENDED SLOT FOR RECEIVING AND TRANSVERSELY SLIDABLY ACCOMMODATING ONE OF SAID TWO SPACED APART MEMBERS; SAID LATCH MEMBER BEING FIXED NEAR THE OTHER END OF SAID FIRST PLANK MEMBER AND HAVING A HANDLE ELEMENT MOUNTED IN SPACED RELATIONSHIP TO SAID FIRST PLANK MEMBER, SAID HANDLE ELEMENT PIVOTALLY MOVABLE RELATIVE TO SAID FIRST PLANK MEMBER FOR FORMING THEREWITH AN OPEN-ENDED SLOT ADAPTED TO RECEIVE AND TRANSVERSELY SLIDABLY RELEASABLY LATCH THE OTHER OF SAID TWO SPACED APART MEMBERS, WHEREBY SAID PLATFORM IS RELEASABLY LOCKED IN POSITION SPANNING SAID TWO SPACED APART MEMBERS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |