Patent US4490089A successfully refreshed from Google Patents.
US4490089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer
Assignee: Individual
•
Filing: 1982-08-26
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Granted: 1984-12-25
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Expires: 2002-08-26
Abstract
Abstract An improved trailer for motorcycles and the like having two principal assemblies connected together in a hinge arrangement at the rear ends thereof; and which through a cooperative levering action therebetween provides for loading essentially parallel to and in contact with the ground while facilitating the raising of the load into position for trailering.
Inventors
- 👤 T. L. Welker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:28
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/07
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
287 words
An improved trailer comprising a main structural assembly having A. An offset axle with two ends, B. A first wheel mounted directly on one end of said offset axle and another wheel mounted directly on the remaining end of said offset axle, C. A frame assembly having a tongue portion, rearward extensions of said tongue portion and a rear member connecting said tongue portion and rearward extensions into a semi-rigid frame, said rear member having a portion adapted to form one portion of a hinge, and D. A pair of springs, one of said pair providing a pivotable connection between one of said rearward extensions and a non-offset portion of said offset axle immediately adjacent one of said wheels and the other of said pair of springs providing a pivotable connection between the other of said rearward extensions and a non-offset portion of said offset axle immediately adjacent the other of said wheels, the locations of said pivotable connections being a predetermined distance forward of said rear member to form a lever, the fulcrum of said lever being located at said pivotable connections with said axle; a main load supporting assembly having A. A main load-supporting member, B. A transverse support member, and C. A rear portion adapted to form another portion of said hinge, said hinge pivotably connecting said rear portion with said rear member; and means including said axle when acting as a fulcrum effective when the forward end of said main structural assembly is in its lowered position to position said main load supporting assembly in a raised condition and when in its raised position to position said main load supporting assembly in a lowered position parallel to and in contact with the ground.
Claim 2
Dependent Claim
287 words
An improved trailer comprising a main structural assembly having A. An offset axle with two ends, B. A first wheel mounted directly on one end of said offset axle and another wheel mounted directly on the remaining end of said offset axle, C. A frame assembly having a tongue portion, rearward extensions of said tongue portion and a rear member connecting said tongue portion and rearward extensions into a semi-rigid frame, said rear member having a portion adapted to form one portion of a hinge, and D. A pair of springs, one of said pair providing a pivotable connection between one of said rearward extensions and a non-offset portion of said offset axle immediately adjacent one of said wheels and the other of said pair of springs providing a pivotable connection between the other of said rearward extensions and a non-offset portion of said offset axle immediately adjacent the other of said wheels, the locations of said pivotable connections being a predetermined distance forward of said rear member to form a lever, the fulcrum of said lever being located at said pivotable connections with said axle; a main load supporting assembly having A. A main load-supporting member, B. A transverse support member, and C. A rear portion adapted to form another portion of said hinge, said hinge pivotably connecting said rear portion with said rear member; and means including said axle when acting as a fulcrum effective when the forward end of said main structural assembly is in its lowered position to position said main load supporting assembly in a raised condition and when in its raised position to position said main load supporting assembly in a lowered position parallel to and in contact with the ground.
Claim 3
Dependent Claim
24 words
An improved trailer according to claim 1 in which said rear portion is located at the rear terminus of said main load supporting assembly.
Claim 4
Dependent Claim
26 words
An improved trailer according to claim 1 in which said axle is offset by an amount equal to at least half the radius of said wheels.
Claim 5
Dependent Claim
21 words
An improved trailer according to claim 1 in which said axle is shaped substantially in the form of a truncated V.
Claim 6
Dependent Claim
41 words
An improved trailer in accordance with claim 2 in which said main structural assembly and said main load supporting assembly both contain matching unthreaded apertures which are positioned in axial alignment when said main structural assembly is in said lowered position.
Claim 7
Dependent Claim
37 words
An improved trailer in accordance with claim 5 further including non-threaded locking pins adapted to be inserted through said apertures when in said axial alignment, thereby to lock said main load supporting assembly in said raised condition.
Claim 8
Dependent Claim
36 words
An improved trailer in accordance with claim 6 further including connectors fitted to said main load supporting assembly for attaching removable supports to retain at least one load in position upon said main load supporting assembly.
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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) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |