Patent US3352440A successfully refreshed from Google Patents.
US3352440A
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Assignee: Earl Industries LLC
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Filing: 1966-03-07
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Granted: 1967-11-14
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Expires: 1986-03-07
Abstract
No abstract record available.
Inventors
- 👤 Wilson Merton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:34
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/43; B60P1/435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A FOLDABLE RAMP ADAPTED TO BE ATTACHED TO THE TAIL GATE OF A TRUCK, SAID RAMP COMPRISING: UPPER AND LOWER, GENERALLY RECTANGULAR RAMP PORTIONS, EACH OF SAID RAMP PORTIONS INCLUDING A RIGID FRAME AND A RAMP LOAD SUPPORTING SURFACE AFFIXED TO SAID FRAME; MEANS FOR ATTACHING SAID UPPER RAMP PORTION TO A TAILLOWER RAMP PORTIONS TO PERMIT POSITIONING SAID RAMP PORTIONS IN EDGE ABUTTING AND CO-PLANAR RELATION AND TO PERMIT FOLDING SAID RAMP PORTIONS INTO GENERALLY OPPOSED, SPACED RELATION ADAPTED TO SANDWICH THE TAILGATE OF A TRUCK THEREBETWEEN.
Claim 2
Dependent Claim
88 words
A FOLDABLE RAMP ADAPTED TO BE ATTACHED TO THE TAIL GATE OF A TRUCK, SAID RAMP COMPRISING: UPPER AND LOWER, GENERALLY RECTANGULAR RAMP PORTIONS, EACH OF SAID RAMP PORTIONS INCLUDING A RIGID FRAME AND A RAMP LOAD SUPPORTING SURFACE AFFIXED TO SAID FRAME; MEANS FOR ATTACHING SAID UPPER RAMP PORTION TO A TAILLOWER RAMP PORTIONS TO PERMIT POSITIONING SAID RAMP PORTIONS IN EDGE ABUTTING AND CO-PLANAR RELATION AND TO PERMIT FOLDING SAID RAMP PORTIONS INTO GENERALLY OPPOSED, SPACED RELATION ADAPTED TO SANDWICH THE TAILGATE OF A TRUCK THEREBETWEEN.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |