Patent US3233758A successfully refreshed from Google Patents.
US3233758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lift gate
Assignee: PENNTRUCK CO Inc
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Filing: 1964-05-04
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Granted: 1966-02-08
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Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 John M Darfus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:14
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/44; B60P1/4485; B60P1/4414; B60P1/4442
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A LIFT GATE FOR A CARGO-CARRYING VEHICLE COMPRISING A BASE FRAME STRUCTURE DETACHABLY MOUNTABLE ON THE VEHICLE, SAID BASE FRAME STRUCTURE INCLUDING A BASE MEMBER RELEASABLY ENGAGEABLE WITH THE FLOOR OF THE VEHICLE''S CARGOCARRYING SPACE AND A PAIR OF UPSTANDING STRUTS SECURED TO SAID BASE MEMBER IN RELATIVELY SPACED RELATIONSHIP, EACH OF SAID STRUTS HAVING MEANS RELEASABLY ENGAGEABLE WITH SAID VEHICLE TO MAINTAIN SAID STRUTS IN AN UPRIGHT POSITION, A CARGO-SUPPORTING PLATFORM, A MECHANICAL LINKAGE INTERCONNECTING SAID BASE FRAME STRUCTURE WITH SAID CARGO SUPPORTING PLATFORM AND BEING OPERABLE TO EFFECT VERTICAL DISPLACEMENT OF SAID PLATFORM RELATIVE TO SAID FRAME STRUCTURE BETWEEN A LOAD-TRANSFERRING POSITION RELATIVE TO THE VEHICLE AND A SECOND LOAD-TRANSFERRING POSITION AND ALTERNATIVELY TO POSITION SAID PLATFORM WITHIN THE SPACE DEFINED BY SAID BASE FRAME STRUCTURE, AND ACTUATING MEANS OPERATIVELY CONNECTED BETWEEN SAID LINKAGE MECHANISM AND SAID BASE FRAME STRUCTURE AND BEING SELECTIVELY OPERABLE TO ACTUATE SAID LINKAGE.
Claim 2
Dependent Claim
150 words
A LIFT GATE FOR A CARGO-CARRYING VEHICLE COMPRISING A BASE FRAME STRUCTURE DETACHABLY MOUNTABLE ON THE VEHICLE, SAID BASE FRAME STRUCTURE INCLUDING A BASE MEMBER RELEASABLY ENGAGEABLE WITH THE FLOOR OF THE VEHICLE''S CARGOCARRYING SPACE AND A PAIR OF UPSTANDING STRUTS SECURED TO SAID BASE MEMBER IN RELATIVELY SPACED RELATIONSHIP, EACH OF SAID STRUTS HAVING MEANS RELEASABLY ENGAGEABLE WITH SAID VEHICLE TO MAINTAIN SAID STRUTS IN AN UPRIGHT POSITION, A CARGO-SUPPORTING PLATFORM, A MECHANICAL LINKAGE INTERCONNECTING SAID BASE FRAME STRUCTURE WITH SAID CARGO SUPPORTING PLATFORM AND BEING OPERABLE TO EFFECT VERTICAL DISPLACEMENT OF SAID PLATFORM RELATIVE TO SAID FRAME STRUCTURE BETWEEN A LOAD-TRANSFERRING POSITION RELATIVE TO THE VEHICLE AND A SECOND LOAD-TRANSFERRING POSITION AND ALTERNATIVELY TO POSITION SAID PLATFORM WITHIN THE SPACE DEFINED BY SAID BASE FRAME STRUCTURE, AND ACTUATING MEANS OPERATIVELY CONNECTED BETWEEN SAID LINKAGE MECHANISM AND SAID BASE FRAME STRUCTURE AND BEING SELECTIVELY OPERABLE TO ACTUATE SAID LINKAGE.
References Cited (Backward Citations)
US2761571A
Cited
US2889059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |