Folding frame for a vehicle or trailer
OwnerRobert Bellinventor
Life of this patent
Estimating the term…
Abstract
A foldable frame and body for a vehicle or trailer provides a chassis, at least one frame member pivotally mounted to the chassis at a first pivot point, a hinge arm pivotally mounted to the chassis at a second pivot point and a release arm for closing the frame which is pivotally connected to the frame member at a third pivot point and to the hinge arm at a fourth pivot point such that the fourth pivot point moves toward a line between the second and third pivot points as the frame is unfolded, leveraging the frame to an open position. The foldable vehicle or trailer is lightweight and may be motorized or human-powered.
Claims20
A foldable frame for a vehicle comprising:
- a) a chassis,
- b) at least one frame member pivotally mounted to said chassis at a first pivot point adjacent to its rear end,
- c) a hinge arm pivotally mounted to said chassis at a second pivot point spaced from said first pivot along said chassis, and
- d) a release arm pivotally mounted to said at least one frame member at a third pivot point and pivotally mounted to said hinge arm at a fourth pivot point, wherein as the frame is unfolded the fourth pivot point moves toward a line defined between said second pivot point and said third pivot point to increase a leverage provided by said release arm as the frame approaches a fully open condition.
Dependencies are inferred from the claim text.