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US3872931A Expired / Lapsed US ⏱️ 0.0 years remaining

Combination trail grader and carrier

Assignee: Individual
•
Filing: 1973-05-11
•
Granted: 1975-03-25
•
Expires: 1993-05-11
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Abstract

Abstract The trail grader comprises a runner assembly, including upstandingly disposed cornerposts and a crossbar slidably mounted at each of its terminal ends to the posts and a pair of runners each disposed at the lowermost terminal ends of the respective cornerposts, a moldboard assembly including upstandingly disposed cornerposts, a crossbar slidably mounted at each of its terminal ends to the moldboard cornerposts and a moldboard having an upstandingly horizontally disposed blade suitably mounted to the lowermost terminal ends of the moldboard cornerposts; and a tongue including a centrally substantially perpendicularly disposed bar suitably mounted to the respective crossbars of the runner assembly and moldboard assembly. The carrier includes a pair of runner assemblies each including upstandingly disposed posts, a crossbar slidably mounted at each of its terminal ends to the cornerposts, and runners suitably fastened to the lowermost terminal ends of the cornerposts; and a platform including a plurality of rails suitably fastened to a platform frame operable to be mounted to the uppermost terminal ends of the cornerposts of the runner assemblies.

Inventors

  • 👤 Richard H Camp

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 07:54
CPC Classifications
B; B62; B62B; B62B13/00; E; E01; E01H; E01H4/00; E01H4/02

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 150 words
A trail grader, comprising: a runner assembly including a first pair of upstandingly disposed cornerposts, a first crossbar slidably mounted at each of its terminal ends to one of said posts and a runner mounted substantially perpendicularly to said crossbar at the lowermost terminal end of each of the first pair of cornerposts; a moldboard assembly including a second pair of upstandingly disposed cornerposts, a second crossbar slidably mounted at each of its terminal ends to said moldboard assembly cornerposts and a moldboard having an upstandingly, horizontally disposed surface mounted at the lowermost terminal ends of said moldboard cornerposts; a tongue including a bar mounted centrally and substantially perpendicularly relative to said crossbars, said tongue being mounted to said first crossbar and slidably mounted to said second crossbar, each of said slidable mountings serving as an adjustment means, and means to lock said slidable mountings in a desired adjusted position.
Claim 2
Dependent Claim 150 words
A trail grader, comprising: a runner assembly including a first pair of upstandingly disposed cornerposts, a first crossbar slidably mounted at each of its terminal ends to one of said posts and a runner mounted substantially perpendicularly to said crossbar at the lowermost terminal end of each of the first pair of cornerposts; a moldboard assembly including a second pair of upstandingly disposed cornerposts, a second crossbar slidably mounted at each of its terminal ends to said moldboard assembly cornerposts and a moldboard having an upstandingly, horizontally disposed surface mounted at the lowermost terminal ends of said moldboard cornerposts; a tongue including a bar mounted centrally and substantially perpendicularly relative to said crossbars, said tongue being mounted to said first crossbar and slidably mounted to said second crossbar, each of said slidable mountings serving as an adjustment means, and means to lock said slidable mountings in a desired adjusted position.
Claim 3
Dependent Claim 36 words
The apparatus of claim 1 wherein said tongue includes hitching means at its end opposite the runner assembly engaging end and said means mounting said runner assembly crossbar to said tongue including slidable, detachable mounting means.
Claim 4
Dependent Claim 34 words
The apparatus of claim 1 wherein said tongue includes a main tubular tongue member and an extension member operable to telescope into said main tubular tongue member and means to selectively lock said members.
Claim 5
Dependent Claim 45 words
The apparatus of claim 1 wherein said means mounting said first crossbar to said cornerposts of the runner assembly includes slidably detachable brackets having selectively locking set pins, wherein said tongue includes detachable locking means, and wherein said moldboard is detachably mounted to said cornerposts.

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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) 1978-03-24 1978-09-23 1979-03-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-03-24 1982-09-23 1983-03-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-03-24 1986-09-23 1987-03-25 $7700.00 Window Closed / Lapsed

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