US4645230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible trailer
Assignee: Individual
•
Filing: 1983-12-13
•
Granted: 1987-02-24
•
Expires: 2003-12-13
Abstract
Abstract The collapsible trailer described herein has a top adapted to mate with the upper edges of removable end and side wall panels. When the trailer is collapsed, the top mates directly with the bed of the trailer, thus forming a storage container for the wall panels. In addition, a readily removable wheel assembly is provided. The wheel normally is pivotable, but can be locked against pivoting when desired.
Inventors
- 👤 Robert E. Hammons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:22
CPC Classifications
B; B62; B62D; B62D63/00; B62D63/06; B62D63/062; B62D63/065; B62D63/061
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
149 words
A collapsible utility trailer comprising a trailer frame, a bed affixed to said frame, a plurality of wall panels removably attachable to said bed, a top removably connectable either to said panels when attached to said bed, or to the bed itself when said panels are removed thereby forming a storage container for said panels, a pivotable wheel assembly connectable to said frame, said wheel assembly being readily removable from said trailer frame, wherein said assembly comprises a kingpin assembly including a mounting bracket and a kingpin attached thereto, a trunnion journaled on said kingpin, a suspension fork pivotally connected to said trunnion, means for biasing said fork with respect to said trunnion, and a wheel rotatably attached to a lower end of said fork, said bracket having a carrying handle attached thereto and at least one dowel pin means extending therefrom for locating said bracket upon said frame.
Claim 2
Dependent Claim
149 words
A collapsible utility trailer comprising a trailer frame, a bed affixed to said frame, a plurality of wall panels removably attachable to said bed, a top removably connectable either to said panels when attached to said bed, or to the bed itself when said panels are removed thereby forming a storage container for said panels, a pivotable wheel assembly connectable to said frame, said wheel assembly being readily removable from said trailer frame, wherein said assembly comprises a kingpin assembly including a mounting bracket and a kingpin attached thereto, a trunnion journaled on said kingpin, a suspension fork pivotally connected to said trunnion, means for biasing said fork with respect to said trunnion, and a wheel rotatably attached to a lower end of said fork, said bracket having a carrying handle attached thereto and at least one dowel pin means extending therefrom for locating said bracket upon said frame.
Claim 3
Dependent Claim
59 words
A trailer as recited in claim 1 wherein said frame includes a laterally extending bolster, and said kingpin bracket generally conforms in shape to said bolster, said bolster having a hole for receiving said dowel pin means, said bolster and said bracket further having holes adapted to receive at least one means for securing said bracket to said frame.
Claim 4
Dependent Claim
44 words
A trailer as recited in claim 1 wherein said frame includes at least one bumper at the rear thereof to protect the trailer, said bumper having a planar vertical rear surface to provide a stable rest when the collapsed trailer is stored on end.
Claim 5
Dependent Claim
28 words
A trailer as recited in claim 1 further comprising a wheel pivot locking mechanism for locking the trunnion and aligning the trailer wheel in a straight trailing position.
Claim 6
Dependent Claim
97 words
A trailer as recited in claim 4 wherein the wheel pivot locking mechanism includes a locking pin means movable toward and away from said trunnion, means for biasing said locking pin means away from the trunnion, a lever mounted with said frame for rotation about an axis parallel to the kingpin, and a toggle link interconnecting said lever and said locking pin means, said trunnion having a hole for receiving the locking pin means, said hole being in such a position that when the trunnion is locked, the trailer wheel is aligned in a straight trailing position.
Claim 7
Dependent Claim
93 words
A trailer as recited in claim 1 further comprising a hitch assembly comprising a pair of tubes attached at the forward end of said trailer frame, a pair of tongues telescopically contained within said tubes and extending forward from the trailer, a lateral rod means interconnecting said tongues, a pair of hitch links attached to the forward end of each tongue, said links being capable of pivoting a full 180° backward from their operational position to a stowed position, and means for securing said links in either said operational or said stowed position.
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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) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |