US3315973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer construction
Assignee: Individual
•
Filing: 1965-04-09
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Granted: 1967-04-25
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Expires: 1985-04-09
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Marple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:07
CPC Classifications
B; B60; B60S; B60S9/00; B60S9/02; B60S9/10; B60S9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
213 words
AN EXTENSIBLE TRAILER OF THE CHARACTER REFERRED TO INCLUDING, AN OUTER ELONGATED PRIMARY BOX SECTION WITH BOTTOM, SIDE, REAR END AND TOP WALLS, AN INNER SECONDARY BOX SECTION WITH BOTTOM, SIDE, FRONT END AND TOP WALLS AND TELESCOPICALLY ENGAGED IN THE FRONT END PORTION OF THE PRIMARY SECTION, GUIDE MEANS BETWEEN THE SECTIONS TO SUPPORT THE SECONDARY SECTION WITHIN THE PRIMARY SECTION FOR FREE LONGITUDINAL SHIFTING RELATIVE THERETO, SAID PRIMARY SECTION HAVING SUPPORTING WHEELS AT ITS OPPOSITE SIDES AND INTERMEDIATE ITS ENDS, SAID SECONDARY SECTION HAVING AN ELONGATE TUBULAR TONGUE WITH A REAR PORTION FIXED TO THE LOWER SURFACE OF THE BOTTOM WALL AND INTERMEDIATE THE SIDES OF THE SECONDARY SECTION AND COEXTENSIVE WITH THE LONGITUDINAL EXTENT THEREOF AND A FORWARD PORTION PROJECTING LONGITUDINALLY FORWARDLY FROM THE SECONDARY SECTION AND CARRYING A PORTION OF A TRAILER HITCH AT ITS FORWARD TERMINAL END, SAID TONGUE OPENING REARWARDLY AND HAVING A DOWNWARDLY OPENING LONGITUDINAL SLOT COEXTENSIVE THEREWITH, AN ELONGATE CORE SLIDABLY ENGAGED IN THE TONGUE AND COEXTENSIVE THEREWITH WHEN THE SECONDARY SECTION IS FULLY ENGAGED WITHIN THE PRIMARY SECTION, SAID CORE HAVING A DOWNWARDLY PROJECTING LONGITUDINAL MOUNTING RIB PROJECTING THROUGH THE SLOT IN THE TONGUE, THE REAR PORTION OF SAID RIB BEING FIXED TO THE UPPER SURFACE OF THE BOTTOM WALL OF THE PRIMARY SECTION.
Claim 2
Dependent Claim
213 words
AN EXTENSIBLE TRAILER OF THE CHARACTER REFERRED TO INCLUDING, AN OUTER ELONGATED PRIMARY BOX SECTION WITH BOTTOM, SIDE, REAR END AND TOP WALLS, AN INNER SECONDARY BOX SECTION WITH BOTTOM, SIDE, FRONT END AND TOP WALLS AND TELESCOPICALLY ENGAGED IN THE FRONT END PORTION OF THE PRIMARY SECTION, GUIDE MEANS BETWEEN THE SECTIONS TO SUPPORT THE SECONDARY SECTION WITHIN THE PRIMARY SECTION FOR FREE LONGITUDINAL SHIFTING RELATIVE THERETO, SAID PRIMARY SECTION HAVING SUPPORTING WHEELS AT ITS OPPOSITE SIDES AND INTERMEDIATE ITS ENDS, SAID SECONDARY SECTION HAVING AN ELONGATE TUBULAR TONGUE WITH A REAR PORTION FIXED TO THE LOWER SURFACE OF THE BOTTOM WALL AND INTERMEDIATE THE SIDES OF THE SECONDARY SECTION AND COEXTENSIVE WITH THE LONGITUDINAL EXTENT THEREOF AND A FORWARD PORTION PROJECTING LONGITUDINALLY FORWARDLY FROM THE SECONDARY SECTION AND CARRYING A PORTION OF A TRAILER HITCH AT ITS FORWARD TERMINAL END, SAID TONGUE OPENING REARWARDLY AND HAVING A DOWNWARDLY OPENING LONGITUDINAL SLOT COEXTENSIVE THEREWITH, AN ELONGATE CORE SLIDABLY ENGAGED IN THE TONGUE AND COEXTENSIVE THEREWITH WHEN THE SECONDARY SECTION IS FULLY ENGAGED WITHIN THE PRIMARY SECTION, SAID CORE HAVING A DOWNWARDLY PROJECTING LONGITUDINAL MOUNTING RIB PROJECTING THROUGH THE SLOT IN THE TONGUE, THE REAR PORTION OF SAID RIB BEING FIXED TO THE UPPER SURFACE OF THE BOTTOM WALL OF THE PRIMARY SECTION.
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |