Patent · US Active

Fold out ramp

US8122553B1 · kind B1 · utility

25Cited by

43References

14Claims

0Family size

Assignee

Lift-U, Division of Hogan Mfg., Inc. · US

Inventors

David Johnson · Modesto, US
Donald Morris · Littleton, US

Key dates

Filing date	Feb 10, 2011
Grant date	Feb 28, 2012
Priority date	—
Expiry date	Feb 10, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S414/134
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A ramp assembly includes ramp portion coupled for rotational movement between a stowed position and a deployed position. A panel is rotatably coupled at a curbside end to the ramp portion about a first axis. The ramp assembly further includes an elongate drive arm that extends radially from a second axis. The drive arm is operably coupled to the ramp portion and to an actuator. The actuator rotates the drive arm about the second axis to drive the ramp portion through a deployment motion. The deployment motion has a first phase, during which the drive arm rotates the ramp portion about the first axis, and a second phase, during which the drive arm moves the first axis from a raised position to a lowered position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.