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US3588167A Expired / Lapsed US ⏱️ 0.0 years remaining

Frame construction for a telescopic trailer

Assignee: Ratcliff Industries Inc
•
Filing: 1969-03-24
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Granted: 1971-06-28
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Expires: 1989-03-24
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Abstract

Abstract A FRAME CONSTRUCTION FOR A TELESCOPIC TRAILER. THE TRAILER INCLUDES A LOWER TRAILER SECTION AND AN UPPER TRAILER SECTION IS MOUNTED FOR TELESCOPIC MOVEMENT BETWEEN AN UPPER DWELLING POSITION AND A LOWER TRANSPORTING POSITION. THE LOWER TRAILER SECTION INCLUDES A FRAME MEMBER AND A VERTICAL WALL IS SUPPORTED ON THE FRAME MEMBER AND SPACED FROM BOTH THE INNER AND OUTER EDGES OF THE FRAME MEMBER. A FLOOR EXTENDS ACROSS THE LOWER TRAILER SECTION AND IS SUPPORTED ON THE INNER EDGE PORTION OF THE FRAME MEMBER. THE UPPER TRAILER SECTION INCLUDES A VERTICAL WALL AND WHEN THE UPPER TRAILER SECTION IS IN THE TRANSPORTING POSITION, THE LOWER EDGE OF THE VERTICAL WALL OF THE UPPER TRAILER SECTION IS ADAPTED TO REST ON THE OUTER EDGE PORTION OF THE FRAME MEMBER.

Inventors

  • 👤 John W Ratcliff
  • 👤 Rudy J Ratcliff

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 15:28
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/32; B60P3/34

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1974-06-27 1974-12-27 1975-06-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-06-27 1978-12-27 1979-06-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-06-27 1982-12-27 1983-06-28 $7700.00 Window Closed / Lapsed

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