US3269561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latching mechanism for telescoping members
Assignee: Dresser Industries Inc
•
Filing: 1964-11-27
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Granted: 1966-08-30
•
Expires: 1984-11-27
Abstract
No abstract record available.
Inventors
- 👤 Ligt John De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:56
CPC Classifications
B; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/0407; B66; B66C; B66C23/00; B66C23/62; B66C23/64; B66C23/70; B66C23/701; B66C23/708; B66F; B66F9/00; B66F9/06; B66F9/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN LOAD LIFTING APPARATUS HAVING THREE ADJACENT MEMBERS, TWO OF WHICH MEMBERS ARE MOVABLE RELATIVELY TO EACH OTHER AND TO THE THIRD MEMBER, SUPPORTING MEANS COMPRISING MOVABLE HOLDING MEANS CARRIED BY THE INTERMEDIATE OF THE THREE MEMBERS ENGAGEABLE WITH A SECOND OF SAID MEMBERS ON ONE SIDE THEREOF TO BE SUPPORTED THEREBY, AND CAM MEANS CARRIED BY SAID SECOND MEMBER TO AUTOMATICALLY MOVE SAID HOLDING MEANS INTO ENGAGEMENT WITH THE THIRD OF SAID MEMBERS TO BE SUPPORTED THEREBY WHEN SAID SECOND MEMBER HAS MOVED A PREDETERMINED DISTANCE RELATIVELY TO THE THIRD MEMBER IN ONE DIRECTION.
Claim 2
Dependent Claim
95 words
IN LOAD LIFTING APPARATUS HAVING THREE ADJACENT MEMBERS, TWO OF WHICH MEMBERS ARE MOVABLE RELATIVELY TO EACH OTHER AND TO THE THIRD MEMBER, SUPPORTING MEANS COMPRISING MOVABLE HOLDING MEANS CARRIED BY THE INTERMEDIATE OF THE THREE MEMBERS ENGAGEABLE WITH A SECOND OF SAID MEMBERS ON ONE SIDE THEREOF TO BE SUPPORTED THEREBY, AND CAM MEANS CARRIED BY SAID SECOND MEMBER TO AUTOMATICALLY MOVE SAID HOLDING MEANS INTO ENGAGEMENT WITH THE THIRD OF SAID MEMBERS TO BE SUPPORTED THEREBY WHEN SAID SECOND MEMBER HAS MOVED A PREDETERMINED DISTANCE RELATIVELY TO THE THIRD MEMBER IN ONE DIRECTION.
References Cited (Backward Citations)
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Cited
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Cited
US3051265A
Cited
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Cited
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Cited
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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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |