Patent JPS6449072A successfully refreshed from Google Patents.
Patent JPS496455A successfully refreshed from Google Patents.
← Back to Patent Explorer
US4089425A Expired / Lapsed US ⏱️ 0.0 years remaining

Self-loading trailer

Assignee: Individual
•
Filing: 1975-07-01
•
Granted: 1978-05-16
•
Expires: 1995-07-01
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A self-loading trailer for handling heavy or large loads wherein the trailer includes a load cradle supported on wheels for tilting movement. An arm including a load engaging means is carried by the cradle for free pivotal movement with respect thereto when the cradle is tilted.

Inventors

  • 👤 Harold D. Baltz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 06:24
CPC Classifications
B; B62; B62D; B62D63/00; B62D63/06; B62D63/062; Y; Y10; Y10S; Y10S414/00; Y10S414/124

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 125 words
A self-loading trailer for handling a load, which trailer comprises, in combination: a. a load cradle having a front portion, a rear portion and a cross bar carried by the front portion; b. wheel means supporting the cradle through a first pivotal axis for tilting the cradle in both the forward and rearward directions; c. a load engaging arm carried by the cross bar for free pivotal movement with respect to the front portion of the cradle; d. a hitch frame having a first end pivotally connected to the front portion of the cradle through a second pivotal axis and a second end for connecting to a tow vehicle through a third pivotal axis wherein, when the trailer is being pulled in a forward direction;
Claim 2
Dependent Claim 125 words
A self-loading trailer for handling a load, which trailer comprises, in combination: a. a load cradle having a front portion, a rear portion and a cross bar carried by the front portion; b. wheel means supporting the cradle through a first pivotal axis for tilting the cradle in both the forward and rearward directions; c. a load engaging arm carried by the cross bar for free pivotal movement with respect to the front portion of the cradle; d. a hitch frame having a first end pivotally connected to the front portion of the cradle through a second pivotal axis and a second end for connecting to a tow vehicle through a third pivotal axis wherein, when the trailer is being pulled in a forward direction;
Claim 3
Dependent Claim 146 words
the horizontal plane within which the second pivotal axis is located is disposed above the cross bar, and 2. the horizontal plane within which the third pivotal axis is located is disposed above the horizontal plane within which the first pivotal axis is located; e. the hitch frame including at least one leg portion extending substantially rearwardly of the second pivotal axis for bearing downwardly against the cross bar and stopping the forward tilting movement of the cradle, with the second pivotal axis being disposed intermediate the leg portion and the second end of the hitch frame; and f. a cross brace for supporting the pivotal arm in a substantially upwardly extending position, which cross brace is carried by the first end of the hitch frame and is disposed forwardly of and above the cross bar when the trailer is being pulled in a forward direction.
Claim 4
Dependent Claim 146 words
the horizontal plane within which the second pivotal axis is located is disposed above the cross bar, and 2. the horizontal plane within which the third pivotal axis is located is disposed above the horizontal plane within which the first pivotal axis is located; e. the hitch frame including at least one leg portion extending substantially rearwardly of the second pivotal axis for bearing downwardly against the cross bar and stopping the forward tilting movement of the cradle, with the second pivotal axis being disposed intermediate the leg portion and the second end of the hitch frame; and f. a cross brace for supporting the pivotal arm in a substantially upwardly extending position, which cross brace is carried by the first end of the hitch frame and is disposed forwardly of and above the cross bar when the trailer is being pulled in a forward direction.
Claim 5
Dependent Claim 28 words
The trailer of claim 1 wherein the load engaging arm includes: a. a free terminal end, and b. a load engaging means carried by the free terminal end.
Claim 6
Dependent Claim 15 words
The trailer of claim 2 wherein the load engaging means includes a plurality of tines.
Claim 7
Dependent Claim 19 words
The trailer of claim 1 wherein the rear portion of the cradle includes means for engaging the ground surface.
Claim 8
Dependent Claim 14 words
The trailer of claim 4 wherein the ground engaging means includes a cylindrical-shaped roller.
Claim 9
Dependent Claim 39 words
The trailer of claim 1 wherein the wheel means includes: a. an axle, b. a wheel rotatably carried adjacent each end of the axle, and c. brake means for locking the wheels against rotation during tilting of the cradle.
Claim 10
Dependent Claim 14 words
The trailer of claim 1 wherein the cradle is of a substantially arcuate configuration.
Claim 11
Dependent Claim 25 words
The trailer of claim 1 wherein the second end of the hitch frame includes means for detachably connecting the hitch frame to the tow vehicle.
Claim 12
Dependent Claim 13 words
The trailer of claim 1 wherein the hitch frame includes two leg portions.
Claim 13
Dependent Claim 23 words
The trailer of claim 9 wherein the two leg portions are each of a substantially elongate configuration and have substantially parallel longitudinal axes.

References Cited (Backward Citations)

US1057787A Cited
US2418522A Cited
US2534868A Cited
US3450281A Cited
US3662900A Cited
US3985253A Cited
US3938682A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-05-15 1981-11-14 1982-05-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-05-15 1985-11-14 1986-05-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-05-15 1989-11-14 1990-05-16 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag