Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
124 words
An elevator platform for a bus, including a reinforced frame providing an outwardly presenting U-shaped well at the bus entrance, a platform for raising and lowering movement within said well, guide means between said platform and frame, rams connected between said frame and platform for moving the platform upwardly and downwardly while guided by said guide means, a pair of spaced links pivoted at each side near the front of the platform, step plates pivoted between said links to form steps to the platform at said entrance, a torsion bar pivoted to the front portion of said platform and secured to the ends of the top links of the pairs, and cam means positioning said links when the platform is moved to different positions.
Claim 2
Dependent Claim
124 words
An elevator platform for a bus, including a reinforced frame providing an outwardly presenting U-shaped well at the bus entrance, a platform for raising and lowering movement within said well, guide means between said platform and frame, rams connected between said frame and platform for moving the platform upwardly and downwardly while guided by said guide means, a pair of spaced links pivoted at each side near the front of the platform, step plates pivoted between said links to form steps to the platform at said entrance, a torsion bar pivoted to the front portion of said platform and secured to the ends of the top links of the pairs, and cam means positioning said links when the platform is moved to different positions.
Claim 3
Dependent Claim
45 words
An elevator platform for a bus as recited in claim 1, wherein a roller is secured by a pivot to one of said top links, and a cam plate having a cam slot in which said roller moves as the platform is raised and lowered.
Claim 4
Dependent Claim
46 words
An elevator platform for a bus as recited in claim 1, wherein risers are pivotally supported at the front end of the platform and to the step plates therebelow which closes the areas between the platform and the step plates and pivots therewith into "ramp" position.
Claim 5
Dependent Claim
62 words
An elevator platform for a bus as recited in claim 2, wherein a cross bar is provided at the bottom of said cam plate, ram means supporting said cross bar, guide means for said cross bar, said roller engaging said cross bar when leaving the cam slot for retaining the step plates and links in flattened "ramp" position as the platform lowers.
Claim 6
Dependent Claim
39 words
An elevator platform for a bus as recited in claim 1, wherein table means is movable over the area above the steps to permit the wheelchair to back thereover into the storage area after being raised with the platform.
Claim 7
Dependent Claim
68 words
An elevator platform for a bus as recited in claim 5, wherein said table is carried below the floor area above the wheels, means for moving said table to bridge the gap above the step plates after the platform has raised the wheelchair and occupant to the plane of said floor area to permit the wheelchair to be rolled onto the table and thereafter onto said floor area.
Claim 8
Dependent Claim
41 words
An elevator platform for a bus as recited in claim 5, wherein said table is carried beneath the platform, and means to advance the table forwardly to cover the area above the steps to permit the wheelchair to be rolled thereonto.
Claim 9
Dependent Claim
25 words
An elevator platform for a bus as recited in claim 5, wherein ram means is provided for moving said table to advanced and retracted positions.
Claim 10
Dependent Claim
53 words
An elevator platform for a bus as recited in claim 1, wherein a safety panel is slidable transversely from a position across the floor aisle to a position across said floor area above the wheel in rear of the steps, and means for shifting the safety panel from one position to the other.
Claim 11
Dependent Claim
54 words
An elevator platform for a bus as recited in claim 1, wherein plates are pivoted at the forward end to the platform for pivotally supporting the pair of spaced links, and ram means for tilting said plates for moving the bottom step plate into engagement with the bottom of a recess in the street.
Claim 12
Dependent Claim
46 words
An elevator platform for a bus as recited in claim 1, wherein a recess is provided in the platform inwardly from the front edge in which the torsion bar is pivotedly supported, said recess indicating to the occupant that the wheelchair is completely on the platform.
Claim 13
Dependent Claim
30 words
An elevator platform for a bus as recited in claim 5, wherein the platform area above the wheel is elongated to permit a plurality of wheelchairs to be stored thereon.
Claim 14
Dependent Claim
38 words
An elevator platform for a bus as recited in claim 5, wherein forwardly facing passenger seats in the rear of the floor area above the wheels are removed to provide storage area for the wheelchairs at aisle level.
Claim 15
Dependent Claim
105 words
An elevator platform for a bus having elements forming a U-shaped well at the door opening permitting the doors to open in the usual manner, a platform in said well, ram means secured to the platform and elements extending thereabove, steps supported at the front of the platform, means moving said steps to substantially horizontal position to form a ramp to said platform when lowered, said steps in ramp position being attached to both sides of the platform on pivoted plates, and ram means for tilting said steps when in ramp position relative to said platform to have the ramp end accessible to a wheelchair.
Claim 16
Dependent Claim
105 words
An elevator platform for a bus having elements forming a U-shaped well at the door opening permitting the doors to open in the usual manner, a platform in said well, ram means secured to the platform and elements extending thereabove, steps supported at the front of the platform, means moving said steps to substantially horizontal position to form a ramp to said platform when lowered, said steps in ramp position being attached to both sides of the platform on pivoted plates, and ram means for tilting said steps when in ramp position relative to said platform to have the ramp end accessible to a wheelchair.
Claim 17
Dependent Claim
100 words
An elevator platform for a bus as recited in claim 1, wherein control means is provided for positioning the links during the further downward movement of the platform to have them extend substantially in horizontal position forwardly of the platform to permit the step plates to be used as a ramp, a plate pivoted near to the rear edge of the bottom step plate, means for retaining said pivoted plate horizontally when disposed in the step position, and means for lowering the front edge of the pivoted plate to have it slope to the ground when disposed in "ramp" position.