US3135398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevating trailers
Assignee: Northrop Grumman Corp
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Filing: 1961-05-31
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Granted: 1964-06-02
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Expires: 1981-05-31
Abstract
No abstract record available.
Inventors
- 👤 Frank R Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:01
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/02; B60P1/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
IN MATERIAL HANDLING EQUIPMENT INCLUDING AN ELONGATED FRAME ASSEMBLY, CRADLE AND CARRIAGE ASSEMBLIES AND IN WHICH SAID FRAME ASSEMBLY EMBODIES A PAIR OF SPACED PARALLEL SIDE MEMBERS, MEANS FOR MOUNTING SAID CRADLE AND CARRIAGE ASSEMBLIES ON SAID FRAME ASSEMBLY FOR LATERAL AND ANGULAR MOVEMENT THEREON, COMPRISING: INDIVIDUAL CONTACT MEMBERS EACH DEFINING A PLANE SURFACE; SAID CONTACT MEMBERS BEING FIXEDLY SECURED TO THE SIDE MEMBERS OF SAID FRAME ASSEMBLY AT EACH CORNER OF THE LATTER; U-SHAPED MEMBERS FIXEDLY SECURED TO SAID CRADLE ASSEMBLY, THE LEG PORTIONS OF SAID U-SHAPED MEMBERS BEING RECTANGULAR IN CROSS-SECTION; SAID CRADLE AND CARRIAGE ASSEMBLIES BEING MOUNTED ON SAID FRAME ASSEMBLY WITH THE LEGS OF SAID U-SHAPED MEMBERS EMBRACING SAID CONTACT MEMBERS WHEREBY THE PLANE SURFACES OF SAID CONTACT MEMBERS HAVE A FIRM CONTACTING RELATION WITH RESPECT TO THE INNER SURFACES OF THE LEGS OF SAID U-SHAPED MEMBERS ASSOCIATED WITH EACH CONTACT MEMBER; AND THE INNER SURFACES OF SAID LEGS EXCEEDING SAID PLANE SURFACES THEREBY ALLOWING ANGULAR MOVEMENT OF AT LEAST 6* TO BE IMPARTED TO SAID CRADLE AND CARRIAGE ASSEMBLIES WITH RESPECT TO SAID FRAME ASSEMBLY WHILE FULL CONTACTING RELATION IS MAINTAINED BETWEEN SAID PLANE SURFACES AND THE INNER SURFACES OF THE LEGS OF SAID U-SHAPED MEMBERS.
Claim 2
Dependent Claim
201 words
IN MATERIAL HANDLING EQUIPMENT INCLUDING AN ELONGATED FRAME ASSEMBLY, CRADLE AND CARRIAGE ASSEMBLIES AND IN WHICH SAID FRAME ASSEMBLY EMBODIES A PAIR OF SPACED PARALLEL SIDE MEMBERS, MEANS FOR MOUNTING SAID CRADLE AND CARRIAGE ASSEMBLIES ON SAID FRAME ASSEMBLY FOR LATERAL AND ANGULAR MOVEMENT THEREON, COMPRISING: INDIVIDUAL CONTACT MEMBERS EACH DEFINING A PLANE SURFACE; SAID CONTACT MEMBERS BEING FIXEDLY SECURED TO THE SIDE MEMBERS OF SAID FRAME ASSEMBLY AT EACH CORNER OF THE LATTER; U-SHAPED MEMBERS FIXEDLY SECURED TO SAID CRADLE ASSEMBLY, THE LEG PORTIONS OF SAID U-SHAPED MEMBERS BEING RECTANGULAR IN CROSS-SECTION; SAID CRADLE AND CARRIAGE ASSEMBLIES BEING MOUNTED ON SAID FRAME ASSEMBLY WITH THE LEGS OF SAID U-SHAPED MEMBERS EMBRACING SAID CONTACT MEMBERS WHEREBY THE PLANE SURFACES OF SAID CONTACT MEMBERS HAVE A FIRM CONTACTING RELATION WITH RESPECT TO THE INNER SURFACES OF THE LEGS OF SAID U-SHAPED MEMBERS ASSOCIATED WITH EACH CONTACT MEMBER; AND THE INNER SURFACES OF SAID LEGS EXCEEDING SAID PLANE SURFACES THEREBY ALLOWING ANGULAR MOVEMENT OF AT LEAST 6* TO BE IMPARTED TO SAID CRADLE AND CARRIAGE ASSEMBLIES WITH RESPECT TO SAID FRAME ASSEMBLY WHILE FULL CONTACTING RELATION IS MAINTAINED BETWEEN SAID PLANE SURFACES AND THE INNER SURFACES OF THE LEGS OF SAID U-SHAPED MEMBERS.
References Cited (Backward Citations)
US2867334A
Cited
US2920773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |