US 5,325,558 AGranted

Wheelchair ramp apparatus

OwnerBrent J. Labrecheinventor

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Abstract

A wheelchair ramp structure is arranged to include first and second U-shaped tracks hingedly mounted relative to one another cooperative and parallel to third and fourth U-shaped tracks, wherein the first and third U-shaped tracks include an adjusting connector link directed therebetween to provide for adjustment and maintaining such adjustment in a spatial relationship of the first and second tracks relative to the third and fourth tracks. The first and second tracks are arranged for hinged mounting relative to one another, as well as the third and fourth tracks permitting ease of storage of the organization during periods of non-use.

Claims3

Dependent claims

A wheel chair ramp apparatus, comprising,

a first ramp member spaced from a second ramp member, the first ramp member including a first U-shaped track and a second U-shaped track, wherein the first U-shaped track includes a first track first end plate projecting beyond the first U-shaped track, and a first U-shaped track second end hinge hingedly mounting the first U-shaped track to the second U-shaped track,
and
the second ramp member includes a third U-shaped track, with a third U-shaped first end plate extending beyond the third U-shaped track, and a third U-shaped track second end hinge hingedly securing the third U-shaped track to a fourth U-shaped track, with the first U-shaped track having a first floor, the second track having a second floor, with the first floor and the second floor in a coplanar relationship in a first position and arranged in a parallel spaced relationship in a second position, with the third track having a third floor, the fourth track having a fourth floor, with the third floor and the fourth floor arranged in a coplanar relationship in the first position, and the third floor and the fourth floor arranged in a parallel spaced relationship in the second position,
and
the first U-shaped track having first track side walls, the third track having third track side walls, wherein one of said first track side walls is arranged in a facing relationship to a further one of said third track side walls, with a connector link adjustably directed between the first U-shaped track and the third U-shaped track and mounted to one of said first U-shaped track side walls and to a facing one of said third U-shaped track side walls,
wherein the connecting link includes a first L-shaped link fixedly mounted to said one of said first track side walls, and a second L-shaped link mounted fixedly to one of said third track side walls, and with a first adjuster rod directed into the first L-shaped link and a second adjuster rod directed into the second L-shaped link, wherein the first adjuster rod and the second adjuster rod are arranged in a coaxially aligned relationship relative to one another, with the first adjuster rod having a right hand thread, the second adjuster rod having a left hand thread, and an internally threaded adjuster sleeve having a sleeve right hand threaded portion threadedly receiving the first adjuster rod, and a sleeve left hand threaded portion threadedly receiving the second adjuster rod.

3 more elements

Dependencies are inferred from the claim text.

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Abstract

A wheel chair ramp apparatus, comprising,

a first ramp member spaced from a second ramp member, the first ramp member including a first U-shaped track and a second U-shaped track, wherein the first U-shaped track includes a first track first end plate projecting beyond the first U-shaped track, and a first U-shaped track second end hinge hingedly mounting the first U-shaped track to the second U-shaped track,
and
the second ramp member includes a third U-shaped track, with a third U-shaped first end plate extending beyond the third U-shaped track, and a third U-shaped track second end hinge hingedly securing the third U-shaped track to a fourth U-shaped track, with the first U-shaped track having a first floor, the second track having a second floor, with the first floor and the second floor in a coplanar relationship in a first position and arranged in a parallel spaced relationship in a second position, with the third track having a third floor, the fourth track having a fourth floor, with the third floor and the fourth floor arranged in a coplanar relationship in the first position, and the third floor and the fourth floor arranged in a parallel spaced relationship in the second position,
and
the first U-shaped track having first track side walls, the third track having third track side walls, wherein one of said first track side walls is arranged in a facing relationship to a further one of said third track side walls, with a connector link adjustably directed between the first U-shaped track and the third U-shaped track and mounted to one of said first U-shaped track side walls and to a facing one of said third U-shaped track side walls,
wherein the connecting link includes a first L-shaped link fixedly mounted to said one of said first track side walls, and a second L-shaped link mounted fixedly to one of said third track side walls, and with a first adjuster rod directed into the first L-shaped link and a second adjuster rod directed into the second L-shaped link, wherein the first adjuster rod and the second adjuster rod are arranged in a coaxially aligned relationship relative to one another, with the first adjuster rod having a right hand thread, the second adjuster rod having a left hand thread, and an internally threaded adjuster sleeve having a sleeve right hand threaded portion threadedly receiving the first adjuster rod, and a sleeve left hand threaded portion threadedly receiving the second adjuster rod.

3 more elements